本申请要求在2023年01月13日提交中国国家知识产权局、申请号为202310084670.5的中国专利申请的优先权，发明名称为“通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China on January 13, 2023, with application number 202310084670.5, and the priority of the Chinese patent application with the invention name “Communication Method and Communication Device”, all contents of which are incorporated by reference in this application.
本申请涉及通信领域，并且更具体地，涉及一种通信方法和通信装置。The present application relates to the field of communications, and more specifically, to a communication method and a communication device.
在通信过程中，网络设备向终端设备发送测量信号，终端根据测量信号获得信道状态信息(channel state information，CSI)，并将该CSI上报给网络设备，网络设备根据该CSI确定与终端设通信的参数，例如，根据CSI确定与终端设备通信所使用的调制编码方式。During the communication process, the network device sends a measurement signal to the terminal device. The terminal obtains channel state information (CSI) based on the measurement signal and reports the CSI to the network device. The network device determines the communication parameters with the terminal device based on the CSI. For example, it determines the modulation and coding method used to communicate with the terminal device based on the CSI.
随着通信技术的发展，基站使用的频谱越来越宽，基站配置的发送天线数目越来越多，基站整体消耗功率越来越高。基站节能也成为研究的重点。例如，基站可以通过回退传输功率的方式实现节能。然而，在实现基站节能时中，若基站的发射功率动态变化，信道状态也可能动态变化，使得终端设备需要上报的多个CSI，导致CSI的上报开销较大，系统传输性能下降。With the development of communication technology, the spectrum used by base stations is getting wider and wider, the number of transmitting antennas configured in base stations is increasing, and the overall power consumption of base stations is increasing. Energy saving of base stations has also become a research focus. For example, base stations can achieve energy saving by backing off transmission power. However, when implementing base station energy saving, if the transmission power of the base station changes dynamically, the channel state may also change dynamically, so that the terminal device needs to report multiple CSIs, resulting in a large CSI reporting overhead and a decrease in system transmission performance.
发明内容Summary of the invention
本申请提供一种通信方法和通信装置，能够降低CSI的上报开销，提升系统传输性能。The present application provides a communication method and a communication device, which can reduce the reporting overhead of CSI and improve the system transmission performance.
第一方面，提供了一种通信方法，该方法可以由终端设备执行，或者，也可以由用于终端设备的芯片或电路执行，本申请对此不作限定。为了便于描述，下面以由终端设备执行为例进行说明。In a first aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit used for the terminal device, which is not limited in this application. For ease of description, the following description is taken as an example of execution by a terminal device.
该方法包括：终端设备接收M个信道状态信息参考信号CSI-RS，M为正整数；根据M个CSI-RS确定第一CSI，第一CSI包括N个秩指示RI，N为正整数；根据第一CSI生成第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一PMI指示第一预编码矩阵，第一指示信息用于从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应K个第二RI，K个第二RI均小于第一RI，第一RI与第一PMI对应，第一RI和K个第二RI属于N个RI，K为正整数；发送第一上报信息。The method includes: a terminal device receives M channel state information reference signals CSI-RS, where M is a positive integer; determines a first CSI according to the M CSI-RS, where the first CSI includes N rank indications RI, where N is a positive integer; generates first reporting information according to the first CSI, where the first reporting information includes a first PMI, N RIs and first indication information, wherein the first PMI indicates a first precoding matrix, and the first indication information is used to indicate K second precoding matrices from the first precoding matrix, the K second precoding matrices correspond to K second RIs respectively, the K second RIs are all smaller than the first RI, the first RI corresponds to the first PMI, the first RI and the K second RIs belong to N RIs, and K is a positive integer; and sends the first reporting information.
在第一方面的某些实现方式中，N大于或者等于K+1。In certain implementations of the first aspect, N is greater than or equal to K+1.
在第一方面的某些实现方式中，N大于或等于M。In certain implementations of the first aspect, N is greater than or equal to M.
在第一方面的某些实现方式中，根据第一CSI生成第一上报信息，包括：根据第一预编码矩阵生成第一指示信息。In certain implementations of the first aspect, generating first reporting information according to the first CSI includes: generating first indication information according to a first precoding matrix.
可选地，M个CSI-RS的端口数相同。Optionally, the number of ports of the M CSI-RSs is the same.
在第一方面的某些实现方式中，第一指示信息用于从第一预编码矩阵中指示K个第二预编码矩阵，包括：第一指示信息指示第一预编码矩阵中的X个列向量，X个列向量为预编码矩阵中信道质量指示CQI最大的X个列向量，X为小于或等于第一RI的正整数。In certain implementations of the first aspect, the first indication information is used to indicate K second precoding matrices from the first precoding matrix, including: the first indication information indicates X column vectors in the first precoding matrix, the X column vectors are the X column vectors with the largest channel quality indication CQI in the precoding matrix, and X is a positive integer less than or equal to the first RI.
在第一方面的某些实现方式中，X为K个第二RI中的最大值。In certain implementations of the first aspect, X is a maximum value among the K second RIs.
基于该实现方式，通过定义第一指示信息指示第一预编码矩阵中的X个列向量，建立第二预编码矩阵与第一预编码矩阵之间的关联，使得网络设备根据接收到的第一PMI和第一指示信息确定K个第二预编码矩阵，相比较终端设备上报K个完整的PMI，能够减少上报信令的开销。Based on this implementation method, by defining the first indication information to indicate X column vectors in the first precoding matrix, an association is established between the second precoding matrix and the first precoding matrix, so that the network device determines K second precoding matrices based on the received first PMI and the first indication information. Compared with the terminal device reporting K complete PMIs, the overhead of reporting signaling can be reduced.
在第一方面的某些实现方式中，第一指示信息指示第一预编码矩阵中的X个列向量，包括：第一指示信息包括X个列向量的索引值。In certain implementations of the first aspect, the first indication information indicates X column vectors in the first precoding matrix, including: the first indication information includes index values of the X column vectors.
在第一方面的某些实现方式中，第一指示信息指示第一预编码矩阵中的X个列向量，包括：第一指示信息包括X个列向量在A(第一RI，X)中的排序索引，A(第一RI，X)为排列公式。In certain implementations of the first aspect, the first indication information indicates X column vectors in the first precoding matrix, including: the first indication information includes the sorting index of the X column vectors in A(first RI, X), and A(first RI, X) is an arrangement formula.
在第一方面的某些实现方式中，第一预编码矩阵为第一宽带预编码矩阵，第一宽带预编码矩阵为第一PMI中第一宽带PMI对应的预编码矩阵；和/或，第一预编码矩阵为L个第一子带预编码矩阵，L个第一子带预编码矩阵为第一PMI中L个第一子带PMI对应的预编码矩阵。第一宽带PMI关联L个第一子带PMI，第一宽带预编码矩阵关联L个第一子带预编码矩阵。In some implementations of the first aspect, the first precoding matrix is a first broadband precoding matrix, and the first broadband precoding matrix is a first The first broadband PMI is associated with L first subband PMIs, and the first broadband precoding matrix is associated with L first subband precoding matrices.
在第一方面的某些实现方式中，第一预编码矩阵包括第一宽带预编码矩阵，K个第二预编码矩阵为K个第二宽带预编码矩阵；或者，第一预编码矩阵包括第一宽带预编码矩阵和L个第一子带预编码矩阵，K个第二预编码矩阵为K个第二宽带预编码矩阵和K*L个第二子带预编码矩阵；其中，K个第二宽带预编码矩阵中每个第二宽带预编码矩阵关联L个第二子带预编码矩阵，L为正整数。In certain implementations of the first aspect, the first precoding matrix includes a first wideband precoding matrix, and the K second precoding matrices are K second wideband precoding matrices; or, the first precoding matrix includes a first wideband precoding matrix and L first subband precoding matrices, and the K second precoding matrices are K second wideband precoding matrices and K*L second subband precoding matrices; wherein each second wideband precoding matrix in the K second wideband precoding matrices is associated with L second subband precoding matrices, and L is a positive integer.
在第一方面的某些实现方式中，第一预编码矩阵包括第一宽带预编码矩阵和L个第一子带预编码矩阵，第一指示信息用于从第一宽带预编码矩阵中指示K个第二宽带预编码矩阵，第一指示信息还包括K个第二宽带预编码矩阵对应的K*L个第二子带PMI。In certain implementations of the first aspect, the first precoding matrix includes a first wideband precoding matrix and L first subband precoding matrices, the first indication information is used to indicate K second wideband precoding matrices from the first wideband precoding matrix, and the first indication information also includes K*L second subband PMIs corresponding to the K second wideband precoding matrices.
该方式下，对于第二宽带预编码矩阵，第一指示信息通过压缩的方式从第一预编码矩阵中指示，对于第二子带预编码矩阵，第一指示信息可以直接携带第二子带PMI。In this manner, for the second wideband precoding matrix, the first indication information is indicated from the first precoding matrix in a compressed manner, and for the second subband precoding matrix, the first indication information can directly carry the second subband PMI.
在一些实现方式中，终端设备直接上报第二子带PMI的传输开销约为1比特或2比特，相比而言，上报第二子带预编码矩阵的指示信息通常需要大于2比特，因此第一指示信息可以直接携带第二子带PMI来减少上报信令的开销。In some implementations, the transmission overhead of the terminal device directly reporting the second subband PMI is approximately 1 bit or 2 bits. In comparison, the indication information for reporting the second subband precoding matrix usually requires more than 2 bits. Therefore, the first indication information can directly carry the second subband PMI to reduce the overhead of reporting signaling.
在第一方面的某些实现方式中，第一PMI与M个CSI-RS中的第一CSI-RS对应；其中，第一CSI-RS为M个CSI-RS中发射功率最大的信号；或者，第一CSI-RS为M个CSI-RS中端口数最多的信号；或者，第一CSI-RS为M个CSI-RS中索引值最小的信号；或者，第一CSI-RS是根据网络设备发送的配置信息确定的。In certain implementations of the first aspect, the first PMI corresponds to a first CSI-RS among M CSI-RSs; wherein the first CSI-RS is a signal with the largest transmission power among the M CSI-RSs; or, the first CSI-RS is a signal with the largest number of ports among the M CSI-RSs; or, the first CSI-RS is a signal with the smallest index value among the M CSI-RSs; or, the first CSI-RS is determined based on configuration information sent by a network device.
可选地，第一CSI-RS也可以是预定义的或者网络设备预配置的。Optionally, the first CSI-RS may also be predefined or preconfigured by the network device.
在第一方面的某些实现方式中，M个CSI-RS满足以下至少一项：M个CSI-RS的PDSCH的功率偏移量不完全相同；M个CSI-RS的同步信号的功率偏移量不完全相同；或者，M个CSI-RS的端口数相同。In certain implementations of the first aspect, the M CSI-RSs satisfy at least one of the following: the power offsets of the PDSCHs of the M CSI-RSs are not exactly the same; the power offsets of the synchronization signals of the M CSI-RSs are not exactly the same; or, the number of ports of the M CSI-RSs is the same.
基于该实现方式，在终端设备需要上报多个CSI的应用场景中，例如发射功率回退场景或者天线关断场景中，终端设备可以通过上报压缩后预编码矩阵的信息，能够降低开销，提升传输性能。Based on this implementation method, in application scenarios where the terminal device needs to report multiple CSIs, such as a transmit power fallback scenario or an antenna shutdown scenario, the terminal device can reduce overhead and improve transmission performance by reporting the compressed precoding matrix information.
在第一方面的某些实现方式中，M个CSI-RS与M个CSI-RS资源一一对应，M个CSI-RS资源分别属于M个CSI-RS资源集合。In certain implementations of the first aspect, the M CSI-RSs correspond one-to-one to the M CSI-RS resources, and the M CSI-RS resources respectively belong to M CSI-RS resource sets.
在第一方面的某些实现方式中，接收第一上报配置信息，第一上报配置信息关联M个CSI-RS的资源；其中，发送第一上报信息，包括：根据第一上报配置信息，发送第一上报信息。In certain implementations of the first aspect, first reporting configuration information is received, and the first reporting configuration information is associated with M CSI-RS resources; wherein sending the first reporting information includes: sending the first reporting information according to the first reporting configuration information.
可选地，第一上报配置信息关联M个CSI-RS资源。Optionally, the first reporting configuration information is associated with M CSI-RS resources.
可选地，终端设备确定P个CSI-RS资源组合，P个CSI-RS资源组合中的每个CSI-RS资源组合中的Q个CSI-RS资源分别位于Q个CSI-RS资源集合中，Q个CSI-RS资源集合包括M个CSI-RS资源集合，M个CSI-RS资源包含于P个CSI-RS资源组合中的第一CSI-RS资源组合，M个CSI-RS资源分别属于M个CSI-RS资源集合，P和Q均为正整数。Optionally, the terminal device determines P CSI-RS resource combinations, the Q CSI-RS resources in each CSI-RS resource combination in the P CSI-RS resource combinations are respectively located in Q CSI-RS resource sets, the Q CSI-RS resource sets include M CSI-RS resource sets, the M CSI-RS resources are included in the first CSI-RS resource combination in the P CSI-RS resource combinations, the M CSI-RS resources belong to the M CSI-RS resource sets respectively, and P and Q are both positive integers.
可选地，P个CSI-RS资源组合中的每个CSI-RS资源组合中的Q个CSI-RS资源之间的准共址(quasico-location，QCL)关系满足typeD。Optionally, a quasi-co-location (QCL) relationship between the Q CSI-RS resources in each CSI-RS resource combination in the P CSI-RS resource combinations satisfies typeD.
可选地，P个CSI-RS资源组合中的每个CSI-RS资源组合中的Q个CSI-RS资源的空域滤波器相同。Optionally, the spatial domain filters of the Q CSI-RS resources in each CSI-RS resource combination in the P CSI-RS resource combinations are the same.
可选地，该P个CSI-RS资源组合可以是网络设备通过信令指示的，或者，该P个CSI-RS资源组合可以是预配置的，例如网络设备为终端设备预配置了某一规则，终端设备可以根据该规则确定P个CSI-RS资源组合。Optionally, the P CSI-RS resource combinations may be indicated by the network device through signaling, or the P CSI-RS resource combinations may be preconfigured, for example, the network device preconfigures a certain rule for the terminal device, and the terminal device may determine the P CSI-RS resource combinations according to the rule.
基于该实现方式，终端设备在接收到一个第一上报配置信息(例如一个CSI report-config)之后，能够确定M个CSI-RS的资源，进而在M个CSI-RS的资源上发送第一上报信息，能够节省配置资源。Based on this implementation method, after receiving a first reporting configuration information (for example, a CSI report-config), the terminal device can determine the resources of M CSI-RSs, and then send the first reporting information on the resources of M CSI-RSs, which can save configuration resources.
在第一方面的某些实现方式中，第一上报信息还包括第一索引，其中，第一索引为第一CSI-RS资源组合的索引；或者，第一索引为M个CSI-RS资源中的第一CSI-RS资源。In certain implementations of the first aspect, the first reporting information also includes a first index, wherein the first index is an index of a first CSI-RS resource combination; or, the first index is a first CSI-RS resource among M CSI-RS resources.
可选地，第一CSI-RS资源为M个CSI-RS资源中索引最小的CSI-RS资源。Optionally, the first CSI-RS resource is a CSI-RS resource with the smallest index among the M CSI-RS resources.
在第一方面的某些实现方式中，第一上报配置信息还包括第一资源的配置，第一资源用于发送第一上报信息。In some implementations of the first aspect, the first reporting configuration information further includes configuration of a first resource, and the first resource is used to send the first reporting information.
可选地，第一资源可以理解为M个CSI-RS对应的一个资源。终端设备可以在该一个第一资源上发送第一上报信息，对应的，网络设备可以在该一个资源上接收第一上报信息。Optionally, the first resource may be understood as a resource corresponding to M CSI-RSs. The terminal device may send the first reporting information on the one first resource, and correspondingly, the network device may receive the first reporting information on the one resource.
在第一方面的某些实现方式中，接收M个第二上报配置信息，M个第二上报配置信息分别关联M个CSI-RS的资源；其中，发送第一上报信息，包括：根据M个第二上报配置，发送第一上报信息。In certain implementations of the first aspect, M second reporting configuration information are received, and the M second reporting configuration information are respectively associated with M CSI-RS resources; wherein sending the first reporting information includes: sending the first reporting information according to the M second reporting configurations.
在第一方面的某些实现方式中，第一上报配置信息还包括M个CSI-RS对应的M个第二资源的配置，第二资源用于发送第一上报信息。In certain implementations of the first aspect, the first reporting configuration information further includes configurations of M second resources corresponding to the M CSI-RSs, and the second resources are used to send the first reporting information.
应理解，当M等于N时，M个第二资源分别用于上报M个CSI-RS对应的信道状态信息。It should be understood that when M is equal to N, the M second resources are respectively used to report channel state information corresponding to the M CSI-RSs.
其中，第二资源可以理解为M个CSI-RS对应的M个资源，终端设备可以在该M个资源上发送第一上报信息，对应的，网络设备可以在该M个资源上接收第一上报信息。Among them, the second resources can be understood as M resources corresponding to M CSI-RSs, and the terminal device can send the first reporting information on the M resources. Correspondingly, the network device can receive the first reporting information on the M resources.
在第一方面的某些实现方式中，根据M个CSI-RS确定CSI处理单元CPU的个数；上报CPU的个数，CPU的个数小于M。In certain implementations of the first aspect, the number of CSI processing units CPUs is determined according to M CSI-RSs; the number of CPUs is reported, and the number of CPUs is less than M.
可选地，CPU的个数是预定义的。Optionally, the number of CPUs is predefined.
在第一方面的某些实现方式中，N个RI还包括R个第三RI，R个第三RI与第一RI相等，R个第三RI分别对应R个第三PMI，第三PMI与第一PMI相同，R为正整数。In certain implementations of the first aspect, the N RIs also include R third RIs, the R third RIs are equal to the first RIs, the R third RIs respectively correspond to R third PMIs, the third PMI is the same as the first PMI, and R is a positive integer.
可选地，N等于R+K+1。Optionally, N is equal to R+K+1.
也就是说，对于和第一RI相等的一个或者多个第三RI，则终端设备可以不上报第三RI对应的第三预编码矩阵，对应的，网络设备根据第三RI，获知第三RI对应的预编码矩阵与第一预编码矩阵相同。也即，网络设备可以将第一PMI指示的第一预编码矩阵作为该第三RI对应的预编码矩阵。基于该实现方式，终端设备可以不上报与第一RI相等的RI所对应的预编码矩阵，能够节约上报资源，节省信令开销，提升设备间传输性能。That is to say, for one or more third RIs that are equal to the first RI, the terminal device may not report the third precoding matrix corresponding to the third RI. Correspondingly, the network device learns, based on the third RI, that the precoding matrix corresponding to the third RI is the same as the first precoding matrix. In other words, the network device can use the first precoding matrix indicated by the first PMI as the precoding matrix corresponding to the third RI. Based on this implementation method, the terminal device may not report the precoding matrix corresponding to the RI that is equal to the first RI, which can save reporting resources, save signaling overhead, and improve transmission performance between devices.
在第一方面的某些实现方式中，第一上报信息还包括N个CQI，N个CQI与N个RI一一对应。In certain implementations of the first aspect, the first reporting information further includes N CQIs, and the N CQIs correspond one-to-one to the N RIs.
应理解，N个CQI与N个RI一一对应，是指N个CQI是分别根据N个RI及每个RI对应的预编码矩阵确定的。It should be understood that the one-to-one correspondence between the N CQIs and the N RIs means that the N CQIs are respectively determined according to the N RIs and the precoding matrix corresponding to each RI.
第二方面，提供了一种通信方法，该方法可以由网络设备执行，或者，也可以由用于网络设备的芯片或电路执行，本申请对此不作限定。为了便于描述，下面以由网络设备执行为例进行说明。In a second aspect, a communication method is provided, which can be executed by a network device, or can also be executed by a chip or circuit used for a network device, which is not limited in this application. For ease of description, the following description is given by taking the execution by a network device as an example.
该方法包括：网络设备发送M个CSI-RS，M为正整数；接收第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一指示信息指示第一预编码矩阵，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应的K个第二RI，K个第二RI均小于第一RI，第一RI和K个第二RI属于N个RI，第一RI与第一PMI对应，K和N为正整数；网络设备根据第一上报信息确定K个第二预编码矩阵。The method includes: a network device sends M CSI-RS, where M is a positive integer; receives first reporting information, where the first reporting information includes a first PMI, N RIs and first indication information, wherein the first indication information indicates a first precoding matrix, the first indication information indicates K second precoding matrices from the first precoding matrix, the K second precoding matrices respectively correspond to K second RIs, the K second RIs are all smaller than the first RI, the first RI and the K second RIs belong to N RIs, the first RI corresponds to the first PMI, and K and N are positive integers; the network device determines the K second precoding matrices according to the first reporting information.
在第二方面的某些实现方式中，N大于或者等于K+1。In certain implementations of the second aspect, N is greater than or equal to K+1.
在第二方面的某些实现方式中，N大于或等于M。In certain implementations of the second aspect, N is greater than or equal to M.
在第二方面的某些实现方式中，根据第一上报信息确定K个第二预编码矩阵，包括：根据第一PMI、第一指示信息和K个第二RI，确定K个第二预编码矩阵。In certain implementations of the second aspect, determining K second precoding matrices according to the first reported information includes: determining the K second precoding matrices according to the first PMI, the first indication information, and the K second RIs.
在第二方面的某些实现方式中，N个RI还包括R个第三RI，R个第三RI与第一RI相等，且R个第三RI分别对应的R个PMI，第三PMI与第一PMI相同，R为正整数。In certain implementations of the second aspect, the N RIs also include R third RIs, the R third RIs are equal to the first RIs, and the R third RIs respectively correspond to R PMIs, the third PMI is the same as the first PMI, and R is a positive integer.
可选地，N等于R+K+1。Optionally, N is equal to R+K+1.
在第二方面的某些实现方式中，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，包括：第一指示信息指示第一预编码矩阵中的X个列向量，X个列向量为预编码矩阵中CQI最大的X个列向量，X为小于或等于第一RI的正整数。In certain implementations of the second aspect, the first indication information indicates K second precoding matrices from the first precoding matrix, including: the first indication information indicates X column vectors in the first precoding matrix, the X column vectors are the X column vectors with the largest CQI in the precoding matrix, and X is a positive integer less than or equal to the first RI.
可选地，X为K个第二RI中的最大值。Optionally, X is the maximum value among K second RIs.
基于该实现方式，通过定义第一指示信息指示第一预编码矩阵中的X个列向量，建立第二预编码矩阵与第一预编码矩阵之间的关联，使得网络设备根据接收到的第一PMI和第一指示信息确定对应的K个第二预编码矩阵，能够减少PMI上报的信令的开销，节省了通信资源。Based on this implementation method, by defining the first indication information to indicate X column vectors in the first precoding matrix, an association is established between the second precoding matrix and the first precoding matrix, so that the network device determines the corresponding K second precoding matrices according to the received first PMI and the first indication information, which can reduce the signaling overhead of the PMI reporting and save communication resources.
在第二方面的某些实现方式中，第一指示信息指示第一预编码矩阵中的X个列向量，包括：第一指示信息包括X个列向量的索引值。In certain implementations of the second aspect, the first indication information indicates X column vectors in the first precoding matrix, including: the first indication information includes index values of the X column vectors.
基于该实现方式，通过定义第一指示信息包括X个列向量的索引值，建立第二预编码矩阵与第一预编码矩阵中的X个列向量的索引值之间的关联，使得网络设备通过X个列向量的索引值可以进一步确定对应的K个第二预编码矩阵，减少上报比特数，能够减少上报信令的开销。Based on this implementation method, by defining the first indication information to include index values of X column vectors, an association is established between the second precoding matrix and the index values of the X column vectors in the first precoding matrix, so that the network device can further determine the corresponding K second precoding matrices through the index values of the X column vectors, thereby reducing the number of reporting bits and reducing the overhead of reporting signaling.
在第二方面的某些实现方式中，第一指示信息指示第一预编码矩阵中的X个列向量，包括：第一指示信息包括X个列向量在A(第一RI，X)中的排序索引，A(第一RI，X)为排列公式。In some implementations of the second aspect, the first indication information indicates X column vectors in the first precoding matrix, including: The information includes the sorting indexes of the X column vectors in A(first RI, X), and A(first RI, X) is the arrangement formula.
基于该实现方式，通过定义第一指示信息包括X个列向量在A(第一RI，X)中的排序索引，建立第二预编码矩阵与第一预编码矩阵中的X个列向量在A(第一RI，X)中的排序索引之间的关联，使得网络设备通过X个列向量在A(第一RI，X)中的排序索引可以进一步确定对应的K个第二预编码矩阵，减少上报比特数，能够减少上报信令的开销。Based on this implementation method, by defining the first indication information to include the sorting indexes of X column vectors in A (first RI, X), an association is established between the second precoding matrix and the sorting indexes of X column vectors in the first precoding matrix in A (first RI, X), so that the network device can further determine the corresponding K second precoding matrices through the sorting indexes of the X column vectors in A (first RI, X), thereby reducing the number of reporting bits and reducing the overhead of reporting signaling.
在第一方面的某些实现方式中，第一预编码矩阵为第一宽带预编码矩阵，第一宽带预编码矩阵为第一PMI中第一宽带PMI对应的预编码矩阵；和/或，第一预编码矩阵为L个第一子带预编码矩阵，L个第一子带预编码矩阵为所述第一PMI中L个第一子带PMI对应的预编码矩阵。第一宽带PMI关联L个第一子带PMI，第一宽带预编码矩阵关联L个第一子带预编码矩阵。In certain implementations of the first aspect, the first precoding matrix is a first wideband precoding matrix, and the first wideband precoding matrix is a precoding matrix corresponding to a first wideband PMI in the first PMI; and/or the first precoding matrix is L first subband precoding matrices, and the L first subband precoding matrices are precoding matrices corresponding to L first subband PMIs in the first PMI. The first wideband PMI is associated with L first subband PMIs, and the first wideband precoding matrix is associated with L first subband precoding matrices.
在第一方面的某些实现方式中，第一预编码矩阵包括第一宽带预编码矩阵，K个第二预编码矩阵为K个第二宽带预编码矩阵；或者，第一预编码矩阵包括第一宽带预编码矩阵和L个第一子带预编码矩阵，K个第二预编码矩阵为K个第二宽带预编码矩阵和K*L个第二子带预编码矩阵；其中，K个第二宽带预编码矩阵中每个第二宽带预编码矩阵关联L个第二子带预编码矩阵，L为正整数在第一方面的某些实现方式中，第一预编码矩阵包括第一宽带预编码矩阵和L个第一子带预编码矩阵，第一指示信息用于从第一宽带预编码矩阵中指示K个第二宽带预编码矩阵，第一指示信息还包括K个第二宽带预编码矩阵对应的K*L个第二子带PMI。In certain implementations of the first aspect, the first precoding matrix includes a first wideband precoding matrix, and the K second precoding matrices are K second wideband precoding matrices; or, the first precoding matrix includes a first wideband precoding matrix and L first subband precoding matrices, and the K second precoding matrices are K second wideband precoding matrices and K*L second subband precoding matrices; wherein each second wideband precoding matrix in the K second wideband precoding matrices is associated with L second subband precoding matrices, and L is a positive integer. In certain implementations of the first aspect, the first precoding matrix includes a first wideband precoding matrix and L first subband precoding matrices, the first indication information is used to indicate K second wideband precoding matrices from the first wideband precoding matrix, and the first indication information also includes K*L second subband PMIs corresponding to the K second wideband precoding matrices.
该方式下，对于第二宽带预编码矩阵，第一指示信息通过压缩的方式指示，对于第二子带预编码矩阵，第一指示信息可以直接携带第二子带PMI。In this manner, for the second wideband precoding matrix, the first indication information is indicated in a compressed manner, and for the second subband precoding matrix, the first indication information can directly carry the second subband PMI.
在一些实现方式中，终端设备直接上报第二子带PMI的传输开销约为1比特或2比特，相比而言，上报第二子带预编码矩阵的指示信息通常需要大于2比特，因此第一指示信息可以直接携带第二子带PMI来减少上报信令的开销。In some implementations, the transmission overhead of the terminal device directly reporting the second subband PMI is approximately 1 bit or 2 bits. In comparison, the indication information for reporting the second subband precoding matrix usually requires more than 2 bits. Therefore, the first indication information can directly carry the second subband PMI to reduce the overhead of reporting signaling.
在第二方面的某些实现方式中，第一PMI与M个CSI-RS中的第一CSI-RS对应；其中，第一CSI-RS为M个CSI-RS中发射功率最大的信号；或者，第一CSI-RS为M个CSI-RS中端口数最多的信号；或者，第一CSI-RS为M个CSI-RS中索引值最小的信号；或者，第一CSI-RS是根据网络设备发送的配置信息确定的。In certain implementations of the second aspect, the first PMI corresponds to a first CSI-RS among M CSI-RSs; wherein the first CSI-RS is a signal with the largest transmission power among the M CSI-RSs; or, the first CSI-RS is a signal with the largest number of ports among the M CSI-RSs; or, the first CSI-RS is a signal with the smallest index value among the M CSI-RSs; or, the first CSI-RS is determined based on configuration information sent by a network device.
可选地，第一CSI-RS也可以是网络设备预配置的。Optionally, the first CSI-RS may also be preconfigured by the network device.
在第二方面的某些实现方式中，M个CSI-RS满足以下至少一项：M个CSI-RS的PDSCH的功率偏移量不完全相同；M个CSI-RS的同步信号的功率偏移量不完全相同；或者，M个CSI-RS的端口数相同。In certain implementations of the second aspect, the M CSI-RSs satisfy at least one of the following: the power offsets of the PDSCHs of the M CSI-RSs are not exactly the same; the power offsets of the synchronization signals of the M CSI-RSs are not exactly the same; or, the number of ports of the M CSI-RSs is the same.
在第二方面的某些实现方式中，M个CSI-RS信号与M个CSI-RS资源一一对应，M个CSI-RS资源分别属于M个CSI-RS资源集合。In certain implementations of the second aspect, the M CSI-RS signals correspond one-to-one to the M CSI-RS resources, and the M CSI-RS resources belong to M CSI-RS resource sets respectively.
在第二方面的某些实现方式中，发送第一上报配置信息，第一上报配置信息关联M个CSI-RS的资源。In certain implementations of the second aspect, first reporting configuration information is sent, where the first reporting configuration information is associated with M CSI-RS resources.
可选地，第一上报配置信息用于配置M个CSI-RS资源集合，M个CSI-RS资源分别属于M个CSI-RS资源集合。Optionally, the first reported configuration information is used to configure M CSI-RS resource sets, and the M CSI-RS resources belong to the M CSI-RS resource sets respectively.
在第二方面的某些实现方式中，第一信息还包括第一索引，第一索引为第一CSI-RS资源组合的索引；或者，第一索引为M个CSI-RS资源中的第一CSI-RS资源，第一CSI-RS资源为M个CSI-RS资源中索引最小的CSI-RS资源；其中，M个CSI-RS资源包含于P个CSI-RS资源组合中的第一CSI-RS资源组合，P个CSI-RS资源组合中的每个CSI-RS资源组合中的Q个CSI-RS资源分别位于Q个CSI-RS资源集合中，Q个CSI-RS资源集合包括M个CSI-RS资源集合，M个CSI-RS资源分别属于M个CSI-RS资源集合，P和Q均为正整数。In certain implementations of the second aspect, the first information also includes a first index, which is an index of a first CSI-RS resource combination; or, the first index is a first CSI-RS resource among M CSI-RS resources, and the first CSI-RS resource is a CSI-RS resource with the smallest index among the M CSI-RS resources; wherein the M CSI-RS resources are included in the first CSI-RS resource combination among P CSI-RS resource combinations, the Q CSI-RS resources in each CSI-RS resource combination among the P CSI-RS resource combinations are respectively located in Q CSI-RS resource sets, the Q CSI-RS resource sets include M CSI-RS resource sets, the M CSI-RS resources respectively belong to the M CSI-RS resource sets, and P and Q are both positive integers.
可选地，第一CSI-RS资源为M个CSI-RS资源中索引最小的CSI-RS资源。Optionally, the first CSI-RS resource is a CSI-RS resource with the smallest index among the M CSI-RS resources.
可选地，P个CSI-RS资源组合中的每个CSI-RS资源组合中的K个CSI-RS资源之间的QCL关系满足typeD，即空域滤波器相同。Optionally, the QCL relationship between the K CSI-RS resources in each CSI-RS resource combination in the P CSI-RS resource combinations satisfies type D, that is, the spatial domain filters are the same.
可选地，该P个CSI-RS资源组合也可以是预配置的，例如网络设备为终端设备预配置了某一规则，终端设备可以根据该规则确定P个CSI-RS资源组合。Optionally, the P CSI-RS resource combinations may also be preconfigured. For example, the network device preconfigures a certain rule for the terminal device, and the terminal device may determine the P CSI-RS resource combinations according to the rule.
在第二方面的某些实现方式中，第一上报配置信息还包括第一资源的配置，第一资源用于发送第一上报信息。In certain implementations of the second aspect, the first reporting configuration information further includes configuration of a first resource, and the first resource is used to send the first reporting information.
其中，第一资源可以理解为M个CSI-RS对应的一个资源，终端设备可以在该一个第一资源上发送第一上报信息，对应的，网络设备可以在该一个资源上发送第一上报信息。The first resource can be understood as a resource corresponding to M CSI-RSs, and the terminal device can send The first reporting information, correspondingly, the network device can send the first reporting information on the one resource.
在第二方面的某些实现方式中，发送M个第二上报配置信息，M个第二上报配置信息分别关联M个CSI-RS的资源。In certain implementations of the second aspect, M pieces of second reporting configuration information are sent, and the M pieces of second reporting configuration information are respectively associated with M CSI-RS resources.
在第二方面的某些实现方式中，第二上报配置信息还包括M个CSI-RS对应的M个第二资源的配置，第二资源用于发送第一上报信息。In certain implementations of the second aspect, the second reporting configuration information further includes configurations of M second resources corresponding to the M CSI-RSs, and the second resources are used to send the first reporting information.
其中，第二资源可以理解为M个CSI-RS对应的M个资源，终端设备可以在该M个资源上发送第一上报信息，对应的，网络设备可以在该M个资源上接收第一上报信息。Among them, the second resources can be understood as M resources corresponding to M CSI-RSs, and the terminal device can send the first reporting information on the M resources. Correspondingly, the network device can receive the first reporting information on the M resources.
在第二方面的某些实现方式中，接收CSI处理单元CPU的个数，是根据M个CSI-RS确定的，CPU的个数小于M。In certain implementations of the second aspect, the number of receiving CSI processing units CPUs is determined based on M CSI-RSs, and the number of CPUs is less than M.
在第二方面的某些实现方式中，第一上报信息包括N个CQI，N个CQI与N个RI一一对应。In certain implementations of the second aspect, the first reporting information includes N CQIs, and the N CQIs correspond one-to-one to the N RIs.
第二方面的一些实现方式的有益效果可以参考第一方面的描述，不再赘述。The beneficial effects of some implementation methods of the second aspect can be referred to the description of the first aspect and will not be repeated here.
第三方面，提供了一种终端设备。该设备包括：收发单元，用于接收M个CSI-RS，M为正整数；处理单元，用于根据M个CSI-RS确定第一CSI，第一CSI包括N个RI，N为正整数；处理单元，还用于根据第一CSI生成第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一指示信息指示第一预编码矩阵，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应K个第二RI，K个第二RI均小于第一RI，第一RI与第一PMI对应，第一RI和K个第二RI属于N个RI，K为正整数；收发单元，还用于发送第一上报信息。In the third aspect, a terminal device is provided. The device includes: a transceiver unit, which is used to receive M CSI-RS, where M is a positive integer; a processing unit, which is used to determine a first CSI according to the M CSI-RS, where the first CSI includes N RIs, where N is a positive integer; the processing unit is also used to generate first reporting information according to the first CSI, where the first reporting information includes a first PMI, N RIs, and first indication information, wherein the first indication information indicates a first precoding matrix, and the first indication information indicates K second precoding matrices from the first precoding matrix, the K second precoding matrices correspond to K second RIs respectively, the K second RIs are all smaller than the first RI, the first RI corresponds to the first PMI, the first RI and the K second RIs belong to N RIs, and K is a positive integer; the transceiver unit is also used to send the first reporting information.
该收发单元可以执行前述第一方面中的接收和发送的处理，处理单元可以执行前述第一方面中除了接收和发送之外的其他处理。The transceiver unit can perform the reception and transmission processing in the aforementioned first aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned first aspect.
第四方面，提供了一种网络设备。该设备包括：收发单元，用于发送M个CSI-RS，M为正整数；收发单元，还用于接收第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应K个第二RI，K个第二RI均小于第一RI，第一RI和K个第二RI属于N个RI，第一RI与第一PMI对应，K和N为正整数；处理单元，用于根据第一上报信息确定K个第二预编码矩阵。In a fourth aspect, a network device is provided. The device includes: a transceiver unit, configured to send M CSI-RS, where M is a positive integer; the transceiver unit, further configured to receive first reporting information, the first reporting information including a first PMI, N RIs, and first indication information, wherein the first indication information indicates K second precoding matrices from the first precoding matrix, the K second precoding matrices correspond to K second RIs respectively, the K second RIs are all smaller than the first RI, the first RI and the K second RIs belong to N RIs, the first RI corresponds to the first PMI, and K and N are positive integers; a processing unit, configured to determine the K second precoding matrices according to the first reporting information.
该收发单元可以执行前述第二方面中的接收和发送的处理，处理单元可以执行前述第二方面中除了接收和发送之外的其他处理。The transceiver unit can perform the reception and transmission processing in the aforementioned second aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned second aspect.
第五方面，提供了一种通信装置，包括收发器、处理器和存储器，该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信装置执行上述第一方面或第二方面及其任一种可能实现方式中的方法。In a fifth aspect, a communication device is provided, comprising a transceiver, a processor and a memory, wherein the processor is used to control the transceiver to receive and send signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes the method in the above-mentioned first aspect or second aspect and any possible implementation manner thereof.
可选地，所述处理器为一个或多个，所述存储器为一个或多个。Optionally, the number of the processors is one or more, and the number of the memories is one or more.
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.
可选地，该通信装置还包括发射机(发射器)和接收机(接收器)。Optionally, the communication device further includes a transmitter (transmitter) and a receiver (receiver).
第六方面，提供了一种通信系统，包括前述的终端设备和网络设备中的一个或多个。In a sixth aspect, a communication system is provided, comprising one or more of the aforementioned terminal devices and network devices.
第七方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序或代码，所述计算机程序或代码在计算机上运行时，使得所述计算机执行上述第一方面至或第二方面及其任一种可能实现方式中的方法。In the seventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program or code, and when the computer program or code is run on a computer, the computer executes the method in the above-mentioned first aspect to or second aspect and any possible implementation manner thereof.
第八方面，提供了一种芯片，包括至少一个处理器，所述至少一个处理器与存储器耦合，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得安装有该芯片系统的通信装置执行上述第一方面或第二方面及其任一种可能实现方式中的方法。In an eighth aspect, a chip is provided, comprising at least one processor, wherein the at least one processor is coupled to a memory, the memory being used to store a computer program, and the processor being used to call and run the computer program from the memory, so that a communication device equipped with the chip system executes the method in the above-mentioned first aspect or second aspect and any possible implementation thereof.
其中，该芯片可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。The chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被通信装置运行时，使得所述通信装置执行上述第一方面或第二方面及其任一种可能实现方式中的方法。In a ninth aspect, a computer program product is provided, the computer program product comprising: a computer program code, when the computer program code is executed by a communication device, the communication device executes the method in the above-mentioned first aspect or second aspect and any possible implementation manner thereof.
第十方面，提供一种通信方法，该方法包括：网络设备发送M个CSI-RS，终端根据M个CSI-RS确定第一CSI，并根据第一CSI生成第一上报信息，第一CSI包括N个RI，第一上报信息包括第一PMI，N个RI和第一指示信息，第一指示信息用于从第一预编码矩阵中指示K个第二预编码矩阵。In the tenth aspect, a communication method is provided, which includes: a network device sends M CSI-RSs, a terminal determines a first CSI based on the M CSI-RSs, and generates first reporting information based on the first CSI, the first CSI includes N RIs, the first reporting information includes a first PMI, N RIs and first indication information, and the first indication information is used to indicate K second precoding matrices from the first precoding matrix.
图1是本申请实施例适用的网络架构的示意图。FIG1 is a schematic diagram of a network architecture applicable to an embodiment of the present application.
图2是本申请实施例提供的通信方法的流程示意图。FIG2 is a flow chart of a communication method provided in an embodiment of the present application.
图3是本申请实施例提供的一种通信装置的结构示意图。FIG3 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
图4是本申请实施例提供的另一种通信装置的结构示意图。FIG4 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application.
下面将结合附图，对本申请中的技术方案进行描述。The technical solution in this application will be described below in conjunction with the accompanying drawings.
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、第五代(5th generation，5G)系统或新无线(new radio，NR)或者其他演进的通信系统等。The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), fifth generation (5G) system or new radio (NR) or other evolved communication systems.
本申请提供的技术方案还可以应用于机器类通信(machine type communication，MTC)、机器间通信长期演进技术(long term evolution-machine，LTE-M)、设备到设备(device-10to device，D2D)网络、机器到机器(machine to machine，M2M)网络、物联网(internet of things，IoT)网络或者其他网络。其中，IoT网络例如可以包括车联网。其中，车联网系统中的通信方式统称为车到其他设备(vehicle to X，V2X，X可以代表任何事物)，例如，该V2X可以包括：车辆到车辆(vehicle to vehicle，V2V)通信，车辆与基础设施(vehicle to infrastructure，V2I)通信、车辆与行人之间的通信(vehicle to pedestrian，V2P)或车辆与网络(vehicle to network，V2N)通信等。本申请提供的技术方案还可以应用于未来的通信系统，如第六代移动通信系统等。本申请对此不作限定。The technical solution provided in the present application can also be applied to machine type communication (MTC), long term evolution-machine (LTE-M), device-10to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, IoT network can include vehicle networking, for example. Among them, the communication mode in the vehicle networking system is collectively referred to as vehicle to other devices (vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (vehicle to vehicle, V2V) communication, vehicle to infrastructure (vehicle to infrastructure, V2I) communication, vehicle to pedestrian (vehicle to pedestrian, V2P) communication or vehicle to network (vehicle to network, V2N) communication, etc. The technical solution provided in the present application can also be applied to future communication systems, such as the sixth generation mobile communication system, etc. This application does not limit this.
图1是本申请的实施例应用的通信系统的架构示意图。如图1所示，该通信系统包括无线接入网100和核心网200，可选的，该通信系统还可以包括互联网300。其中，无线接入网100可以包括至少一个无线接入网设备(如图1中的110a和110b)，还可以包括至少一个终端(如图1中的120a-120j)。终端通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端和终端之间以及无线接入网设备和无线接入网设备之间可以通过有线或无线的方式相互连接。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图1中未画出。FIG1 is a schematic diagram of the architecture of a communication system used in an embodiment of the present application. As shown in FIG1 , the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system may also include the Internet 300. The wireless access network 100 may include at least one wireless access network device (such as 110a and 110b in FIG1 ), and may also include at least one terminal (such as 120a-120j in FIG1 ). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device may be integrated on the same physical device, or the functions of some core network devices and some wireless access network devices may be integrated on one physical device. Terminals and terminals and wireless access network devices may be connected to each other by wire or wireless means. FIG1 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG1 .
无线接入网设备可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、第五代(5th generation，5G)移动通信系统中的下一代基站(next generation NodeB，gNB)、第六代(6th generation，6G)移动通信系统中的下一代基站、未来移动通信系统中的基站或WiFi系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。这里的CU完成基站的无线资源控制协议和分组数据汇聚层协议(packet data convergence protocol，PDCP)的功能，还可以完成业务数据适配协议(service data adaptation protocol，SDAP)的功能；DU完成基站的无线链路控制层和介质访问控制(medium access control，MAC)层的功能，还可以完成部分物理层或全部物理层的功能，有关上述各个协议层的具体描述，可以参考第三代合作伙伴计划(3rd generation partnership project，3GPP)的相关技术规范。无线接入网设备可以是宏基站(如图1中的110a)，也可以是微基站或室内站(如图1中的110b)，还可以是中继节点或施主节点等。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。为了便于描述，下文以基站作为无线接入网设备的例子进行描述。The wireless access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), the next generation base station (next generation NodeB, gNB) in the fifth generation (5th generation, 5G) mobile communication system, the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, a base station in a future mobile communication system or an access node in a WiFi system, etc.; it can also be a module or unit that completes part of the functions of a base station, for example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). Here, the CU completes the functions of the radio resource control protocol and the packet data convergence layer protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of each of the above-mentioned protocol layers, reference can be made to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The wireless access network device can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For the convenience of description, the following description takes the base station as an example of the wireless access network device.
终端也可以称为终端设备、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.
基站和终端可以是固定位置的，也可以是可移动的。基站和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在飞机、气球和人造卫星上。本申请的实施例对基站和终端的应用场景不做限定。Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.
基站和终端的角色可以是相对的，例如，图1中的直升机或无人机120i可以被配置成移动基站，对于那些通过120i接入到无线接入网100的终端120j来说，终端120i是基站；但对于基站110a来说，120i是终端，即110a与120i之间是通过无线空口协议进行通信的。当然，110a与120i之间也可以是通过基站与基站之间的接口协议进行通信的，此时，相对于110a来说，120i也是基站。因此，基站和终端都可以统一称为通信装置，图1中的110a和110b可以称为具有基站功能的通信装置，图1中的120a-120j可以称为具有终端功能的通信装置。The roles of the base station and the terminal can be relative. For example, the helicopter or drone 120i in FIG. 1 can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in FIG. 1 can be referred to as communication devices with base station functions, and 120a-120j in FIG. 1 can be referred to as communication devices with terminal functions.
基站和终端之间、基站和基站之间、终端和终端之间可以通过授权频谱进行通信，也可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信；可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.
在本申请的实施例中，基站的功能也可以由基站中的模块(如芯片)来执行，也可以由包含有基站功能的控制子系统来执行。这里的包含有基站功能的控制子系统可以是智能电网、工业控制、智能交通、智慧城市等上述应用场景中的控制中心。终端的功能也可以由终端中的模块(如芯片或调制解调器)来执行，也可以由包含有终端功能的装置来执行。In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, smart city, etc. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.
本申请实施例提供的技术方案可以应用于通信设备间的无线通信。通信设备间的无线通信可以包括：基站和终端间的无线通信、基站和基站间的无线通信，以及终端和终端间的无线通信。可以理解的是，本申请的实施例中，物理上行共享信道(physical downlink share channel，PDSCH)、物理下行控制信道(physical downlink control channel，PDCCH)和物理上行共享信道(physical uplink share channel，PUSCH)只是分别作为下行数据信道、下行控制信道和上行数据信道一种举例，在不同的系统和不同的场景中，数据信道和控制信道可能有不同的名称，本申请的实施例对此并不做限定。The technical solution provided in the embodiment of the present application can be applied to wireless communication between communication devices. Wireless communication between communication devices may include: wireless communication between base stations and terminals, wireless communication between base stations, and wireless communication between terminals. It can be understood that in the embodiments of the present application, the physical downlink shared channel (physical downlink share channel, PDSCH), the physical downlink control channel (physical downlink control channel, PDCCH) and the physical uplink shared channel (physical uplink share channel, PUSCH) are only used as examples of downlink data channels, downlink control channels and uplink data channels respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of the present application do not limit this.
在本申请中，基站向终端发送下行信号或下行信息，下行信息承载在下行信道上；终端向基站发送上行信号或上行信息，上行信息承载在上行信道上。终端为了与基站进行通信，需要与基站控制的小区建立无线连接。与终端建立了无线连接的小区称为该终端的服务小区。当终端与该服务小区进行通信的时候，还会受到来自邻区的信号的干扰。In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.
为便于理解本申请实施例的方案，对相关概念进行说明。To facilitate understanding of the solutions of the embodiments of the present application, relevant concepts are explained.
1.发射通道(transmitter，TX)1. Transmitter (TX)
射频(radio frequency，RF)发射通道简称发射通道。一个发射通道对应一个物理天线端口。发射通道可接收来自基带芯片的基带信号，对基带信号进行射频处理(如上变频、放大和滤波)以得到射频信号，并最终通过天线将该射频信号辐射到空间中。具体地，发射通道可以包括天线开关，天线调谐器，功率放大器(power amplifier，PA)，混频器(mixer)，本地振荡器(local oscillator，LO)、滤波器(filter)等电子器件中的一个或多个，这些电子器件可以根据需要集成到一个或多个芯片中。天线有时也可以认为是发射通道的一部分。在本申请的实施例中，天线关断也可以称为发射通道关断。The radio frequency (RF) transmission channel is referred to as the transmission channel. One transmission channel corresponds to one physical antenna port. The transmission channel can receive the baseband signal from the baseband chip, perform RF processing (such as up-conversion, amplification and filtering) on the baseband signal to obtain the RF signal, and finally radiate the RF signal into space through the antenna. Specifically, the transmission channel may include one or more electronic devices such as an antenna switch, an antenna tuner, a power amplifier (PA), a mixer, a local oscillator (LO), and a filter. These electronic devices can be integrated into one or more chips as needed. The antenna can sometimes also be considered as part of the transmission channel. In the embodiments of the present application, antenna shutdown can also be referred to as transmission channel shutdown.
2.天线端口(port)2. Antenna port
天线端口简称端口。如果没有特别说明，在本申请的实施例中的天线端口均指的是逻辑天线端口，而不是物理天线端口。一个天线端口可以关联一个或多个发射通道。每个天线端口上的信号都是通过与之关联的一个或多个发射通道发射出去。当一个天线端口关联多个发射通道时，该天线端口上的信号通过加权系数加权后通过与之关联的多个发射通道发射出去。也可以理解为，多个物理天线经过加权系数加权后形成一个逻辑天线。这里的加权系数可以是复数也可以是实数，不同物理天线上的加权系数可能相同也可能不同。每一个天线端口有对应的时频资源和参考信号。不同天线端口对应的时频资源可以相同也可以不同。基站通过天线端口A发射的参考信号，可以被终端用于估计天线端口A到终端的无线信道的特征，该无线信道的特征可以被该终端用于估计通过天线端口A发射的物理信道，或者用于确定数据传输时的调制阶数、码率等信息。一个参考信号可以对应一个或多个天线端口，也可以理解为，一个参考信号可以通过一个或多个天线端口发射。Antenna port is referred to as port for short. Unless otherwise specified, the antenna ports in the embodiments of the present application refer to logical antenna ports, not physical antenna ports. An antenna port can be associated with one or more transmission channels. The signal on each antenna port is transmitted through one or more transmission channels associated with it. When an antenna port is associated with multiple transmission channels, the signal on the antenna port is weighted by a weighting coefficient and then transmitted through multiple transmission channels associated with it. It can also be understood that multiple physical antennas are weighted by weighting coefficients to form a logical antenna. The weighting coefficient here can be a complex number or a real number, and the weighting coefficients on different physical antennas may be the same or different. Each antenna port has corresponding time-frequency resources and reference signals. The time-frequency resources corresponding to different antenna ports may be the same or different. The reference signal transmitted by the base station through antenna port A can be used by the terminal to estimate the characteristics of the wireless channel from antenna port A to the terminal, and the characteristics of the wireless channel can be used by the terminal to estimate the physical channel transmitted through antenna port A, or to determine the modulation order, code rate and other information during data transmission. A reference signal can correspond to one or more antenna ports, and it can also be understood that a reference signal can be transmitted through one or more antenna ports.
3.信道状态信息CSI3. Channel State Information CSI
无线信号通过无线信道由发射端到达接收端的过程中，由于可能经历散射、反射以及能量随距离的衰减，从而产生衰落。另外，无线信号在接收端也可能受到其它信号的干扰，从而影响无线信号的接收。信号的衰减以及干扰等特征可以通过CSI来表征。具体地，CSI可以包括CSI-RS资源指示(CSI-RS resource indicator，CRI)，秩指示(rank indicator，RI)，预编码矩阵指示(precoding matrix indicator，PMI)，信道质量指示(channel quality indication，CQI)，同步信号和物理广播信道块(synchronization signal and physical broadcast channel block，SSB)资源指示(SSB resource indicator，SSBRI)，层指示(layer indicator，LI)，L1-参考信号接收功率(reference signal received power，RSRP)和L1-信号与干扰噪声比(signal to interference plus noise ratio，SINR)中的至少一种。CSI可由终端通过物理上行控制信道(physical uplink control channel，PUCCH)或物理上行共享信道(physical uplink share channel，PUSCH)发送给基站。In the process of wireless signals passing from the transmitter to the receiver through the wireless channel, they may experience scattering, reflection, and energy loss with distance. Attenuation, thereby causing fading. In addition, the wireless signal may also be interfered by other signals at the receiving end, thereby affecting the reception of the wireless signal. The attenuation and interference characteristics of the signal can be characterized by CSI. Specifically, CSI may include CSI-RS resource indicator (CSI-RS resource indicator, CRI), rank indicator (rank indicator, RI), precoding matrix indicator (precoding matrix indicator, PMI), channel quality indication (channel quality indication, CQI), synchronization signal and physical broadcast channel block (synchronization signal and physical broadcast channel block, SSB) resource indicator (SSB resource indicator, SSBRI), layer indicator (layer indicator, LI), L1-reference signal received power (reference signal received power, RSRP) and L1-signal to interference plus noise ratio (signal to interference plus noise ratio, SINR) at least one. CSI can be sent by the terminal to the base station through the physical uplink control channel (physical uplink control channel, PUCCH) or the physical uplink shared channel (physical uplink share channel, PUSCH).
4.CSI处理单元(CSI processing unit，CPU)4.CSI processing unit (CPU)
终端在进行CSI测量时，需要占用一定的计算/存储资源。3GPP协议中用CPU的个数来表征终端处理CSI所需要占用的资源。终端会向基站报告终端能够支持的CPU的数目。例如，终端1会告知基站，其支持的最大的CPU数目为10；终端2会告知基站，其支持的最大的CPU数目为15。这里所说的支持的最大的CPU数目是指同时支持的CPU数目，可以是一个载波同时支持的CPU数目，或者也可以是所有载波同时支持的CPU的数目。比如，终端只支持一个CPU，仅仅表明在同一个时刻，终端只会有一个CPU用于CSI的处理。When the terminal performs CSI measurement, it needs to occupy certain computing/storage resources. The 3GPP protocol uses the number of CPUs to characterize the resources required for the terminal to process CSI. The terminal will report to the base station the number of CPUs that the terminal can support. For example, terminal 1 will inform the base station that the maximum number of CPUs it supports is 10; terminal 2 will inform the base station that the maximum number of CPUs it supports is 15. The maximum number of CPUs supported here refers to the number of CPUs supported at the same time, which can be the number of CPUs supported by one carrier at the same time, or the number of CPUs supported by all carriers at the same time. For example, if the terminal only supports one CPU, it only means that at the same time, the terminal will only have one CPU for CSI processing.
5.CSI报告(CSI report)5.CSI report
CSI报告由终端发送给基站，用于基站获知其向终端发送下行信息时的信道状态。1个CSI report用于指示终端反馈1份CSI，不同CSI可以对应不同的频带，不同的传输假设或者不同的上报模式。The CSI report is sent by the terminal to the base station for the base station to know the channel status when it sends downlink information to the terminal. One CSI report is used to instruct the terminal to feedback one CSI. Different CSIs can correspond to different frequency bands, different transmission assumptions or different reporting modes.
一般来说，一个CSI report可以关联1个用于信道测量的参考信号资源，还可以关联1个或多个用于干扰测量的参考信号资源。一个CSI report对应一个传输资源，即终端用于发送该CSI的时频资源。Generally speaking, a CSI report can be associated with one reference signal resource for channel measurement and one or more reference signal resources for interference measurement. A CSI report corresponds to one transmission resource, that is, the time-frequency resource used by the terminal to send the CSI.
6.宽带6. Broadband
用于表征一段频域资源，宽带可以包括一个或者多个资源块(resource block，RB)。每个RB有多个资源单元(resource element，RE)组成。Used to represent a frequency domain resource, broadband can include one or more resource blocks (RBs). Each RB is composed of multiple resource elements (REs).
7.预编码矩阵指示PMI7. Precoding matrix indication PMI
PMI可用于指示预编码矩阵，确定用于基站向终端发送数据时的预编码。该预编码矩阵例如可以是终端基于各个频域单元的信道矩阵确定的预编码矩阵。该信道矩阵可以是终端通过信道估计等方式或者基于信道互易性确定。但应理解，终端确定预编码矩阵的具体方法并不限于上文所述，具体实现方式可参考现有技术，为了简洁，这里不再一一列举。PMI can be used to indicate the precoding matrix and determine the precoding used when the base station sends data to the terminal. The precoding matrix can be, for example, a precoding matrix determined by the terminal based on the channel matrix of each frequency domain unit. The channel matrix can be determined by the terminal through channel estimation or other methods or based on channel reciprocity. However, it should be understood that the specific method for the terminal to determine the precoding matrix is not limited to the above, and the specific implementation method can refer to the prior art. For the sake of brevity, it is not listed here one by one.
终端确定的预编码矩阵可以称为待反馈的预编码矩阵，或者说，待上报的预编码矩阵。终端可以通过PMI指示待反馈的预编码矩阵，以便于基站基于PMI恢复出该预编码矩阵。基站基于该PMI恢复出的预编码矩阵可以与上述待反馈的预编码矩阵相同或相近似。在下行信道测量中，基站根据PMI确定出的预编码矩阵与终端所确定的预编码矩阵的近似度越高，其确定出的用于数据传输的预编码矩阵下行信道的适配性越高，信号的传输质量越高。The precoding matrix determined by the terminal can be called the precoding matrix to be fed back, or the precoding matrix to be reported. The terminal can indicate the precoding matrix to be fed back through the PMI so that the base station can recover the precoding matrix based on the PMI. The precoding matrix recovered by the base station based on the PMI can be the same as or similar to the precoding matrix to be fed back. In the downlink channel measurement, the higher the approximation between the precoding matrix determined by the base station based on the PMI and the precoding matrix determined by the terminal, the higher the adaptability of the downlink channel of the precoding matrix determined by the base station for data transmission, and the higher the transmission quality of the signal.
预编码矩阵指示PMI也可用于指示信道矩阵(亦可称为信道信息等)，在多站协作场景下，PMI可用于指示多个基站的信道矩阵(也可以称为多站信道矩阵或多站信道信息)。终端可以通过PMI向基站指示信道矩阵，以便于基站基于PMI恢复出该信道矩阵，从而确定出用于数据传输的预编码矩阵。The precoding matrix indication PMI can also be used to indicate the channel matrix (also called channel information, etc.). In a multi-station collaboration scenario, the PMI can be used to indicate the channel matrix of multiple base stations (also called multi-station channel matrix or multi-station channel information). The terminal can indicate the channel matrix to the base station through the PMI, so that the base station can recover the channel matrix based on the PMI, thereby determining the precoding matrix for data transmission.
终端可以以宽带为粒度反馈PMI，也即宽带PMI。终端也可以在反馈宽带PMI的基础上，进一步以子带为粒度反馈PMI，也即子带PMI。宽带PMI可以用于指示一个宽带部分的预编码矩阵。一个子带PMI用于反馈一个子带的预编码矩阵。宽带PMI对应的宽带可以被划分为若干个子带，每个PMI子带可以反馈一个子带PMI。例如，在终端被指示进行子带PMI反馈时，若一个子带包括2个RB，则终端在频域上每2个RB上报一个PMI，即PMI用于指示2个RB对应的预编码矩阵或信道矩阵。应理解，PMI仅为一种命名，不应对本申请构成任何限定。本申请并不排除在未来的协议中定义其他名称的信令以用于相同或相似功能的可能。The terminal can feedback PMI with broadband as the granularity, that is, broadband PMI. The terminal can also further feedback PMI with subband as the granularity on the basis of feedback broadband PMI, that is, subband PMI. Broadband PMI can be used to indicate the precoding matrix of a broadband part. A subband PMI is used to feedback the precoding matrix of a subband. The broadband corresponding to the broadband PMI can be divided into several subbands, and each PMI subband can feedback a subband PMI. For example, when the terminal is instructed to perform subband PMI feedback, if a subband includes 2 RBs, the terminal reports a PMI for every 2 RBs in the frequency domain, that is, PMI is used to indicate the precoding matrix or channel matrix corresponding to the 2 RBs. It should be understood that PMI is only a name and should not constitute any limitation to this application. This application does not exclude the possibility of defining signaling with other names in future protocols for the same or similar functions.
8.码本结构和预编码矩阵8. Codebook structure and precoding matrix
反映了PMI上报量与所反馈的预编码矩阵或信道信息之间的关系。终端可以根据参考信号测量得到信道矩阵，并基于信道矩阵和预定义的码本结构确定预编码矩阵，进而确定PMI。基站可以根据终端反馈的PMI和码本结构恢复出该预编码矩阵。该预编码矩阵也可以被称为码本。It reflects the relationship between the PMI reporting amount and the precoding matrix or channel information fed back. The terminal can obtain the channel matrix based on the reference signal measurement, and determine the precoding matrix based on the channel matrix and the predefined codebook structure, and then determine the PMI. The base station can restore the precoding matrix based on the PMI and codebook structure fed back by the terminal. The precoding matrix can also be called a codebook.
在通信过程中，基站和终端通过测量信号获知CSI，然后根据获得的CSI进行数据收发。NR中信道的测量和干扰的测量思路主要是通过发送已知序列的参考信号(reference signal，RS)来测量信道或者测量干扰。NR中通常通过CSI-RS测量下行信道，信道探测参考信号(sounding reference signal，SRS)测量上行信道。当然，对于TDD系统，也可以利用上下行信道的互异性，获取信道状态。本申请主要针对下行信道/干扰测量。During the communication process, the base station and the terminal obtain CSI through the measurement signal, and then send and receive data based on the obtained CSI. The idea of measuring channels and interference in NR is mainly to measure channels or interference by sending a reference signal (RS) of a known sequence. In NR, the downlink channel is usually measured by CSI-RS, and the uplink channel is measured by the sounding reference signal (SRS). Of course, for TDD systems, the reciprocity of the uplink and downlink channels can also be used to obtain the channel status. This application is mainly for downlink channel/interference measurement.
下面以类型1单面板码本模式1(type 1single panel codebookmode 1)为例，对PMI的上报进行简单说明。应理解，终端上报的PMI通常包括2部分。第一部分为i1，即宽带PMI的上报。第二部分为i2，即子带PMI的上报。示例性的，在终端上报宽带PMI时，终端可以上报宽带PMI的i1和i2。在终端上报宽带PMI和子带PMI时，终端可以上报宽带PMI的i1，以及子带PMI的i2，子带PMI的i1可以认为和宽带PMI的i1相同。The following takes type 1 single panel codebook mode 1 (type 1 single panel codebookmode 1) as an example to briefly explain the reporting of PMI. It should be understood that the PMI reported by the terminal usually includes 2 parts. The first part is i1, which is the reporting of broadband PMI. The second part is i2, which is the reporting of subband PMI. Exemplarily, when the terminal reports broadband PMI, the terminal can report i1 and i2 of broadband PMI. When the terminal reports broadband PMI and subband PMI, the terminal can report i1 of broadband PMI and i2 of subband PMI. i1 of subband PMI can be considered to be the same as i1 of broadband PMI.
在一种示例中，在rank＝1的情况下，PMI对应的预编码矩阵中包括一个列向量，该列向量对应一个v向量，如表1所示。其中，v向量也可以被称为基向量。基向量或者称波束向量，空域波束基向量或空域向量。空域基向量中的各个元素可以表示各个天线端口的权重。基于空域基向量中各个元素所表示的各个天线端口的权重，将各个天线端口的信号做线性叠加，可以在空间某一方向上形成信号较强的区域。可选地，空域基向量取自离散傅里叶变换(discrete fourier transform，DFT)矩阵。该DFT矩阵中的每个列向量可以称为一个DFT向量。换句话说，空域基向量可以为DFT向量。该空域基向量例如可以是NR协议TS 38.214中类型I(type I)码本中定义的DFT向量。In one example, when rank=1, the precoding matrix corresponding to the PMI is It includes a column vector, which corresponds to a v vector, as shown in Table 1. Among them, the v vector can also be called a basis vector. Basis vector is also called beam vector, spatial beam basis vector or spatial vector. Each element in the spatial basis vector can represent the weight of each antenna port. Based on the weights of each antenna port represented by each element in the spatial basis vector, the signals of each antenna port are linearly superimposed to form an area with strong signals in a certain direction in space. Optionally, the spatial basis vector is taken from a discrete Fourier transform (DFT) matrix. Each column vector in the DFT matrix can be called a DFT vector. In other words, the spatial basis vector can be a DFT vector. The spatial basis vector can be, for example, a DFT vector defined in the type I codebook in NR protocol TS 38.214.
表1
Table 1
其中，i1包括i1,1和i1,2，i1,1用于确定v向量的第一维度的索引，i1,2用于确定v向量的第二维度的索引。可以理解为，i1用于从v向量集合中选择一个v向量，选择第一维度索引为i1,1和第二维度索引为i1,2的v向量。v向量集合中的每一v向量对应一个波束，因而，也可以将v向量集合理解为一个波束集合。该波束集合包括2个维度，第一维度即水平维度，第二维度即垂直维度，第一维度对应N1*O1个波束，第二维度对应N2*O2个波束，该波束集合包括N1*O1*N2*O2个波束，通过i1选择波束集合中水平维度为i1,1和垂直维度为i1,2的波束。N1、N2，O1和O2为基站通过RRC参数配置的。示例的，v向量中的l为第一维度的索引，m为第二维度的索引。i2可以用来选择PMI对应的预编码矩阵中列向量的相位调整值，i2包括列向量的相位调整值的索引n，索引n可以确定列向量的相位调整值，即：
Among them, i1 includes i1,1 and i1,2 , i1,1 is used to determine the index of the first dimension of the v vector, and i1,2 is used to determine the index of the second dimension of the v vector. It can be understood that i1 is used to select a v vector from the v vector set, and selects the v vector whose first dimension index is i1,1 and whose second dimension index is i1,2 . Each v vector in the v vector set corresponds to a beam, so the v vector set can also be understood as a beam set. The beam set includes 2 dimensions, the first dimension is the horizontal dimension, and the second dimension is the vertical dimension. The first dimension corresponds to N1 *O1 beams, and the second dimension corresponds to N2 *O2 beams. The beam set includes N1 *O1 *N2 *O2 beams, and the beam whose horizontal dimension is i1,1 and the vertical dimension is i1,2 in the beam set is selected by i1. N1 , N2 , O1 and O2 are configured by the base station through RRC parameters. For example, l in the v vector is the index of the first dimension, and m is the index of the second dimension. i2 can be used to select the phase adjustment value of the column vector in the precoding matrix corresponding to the PMI, and i2 includes the index n of the phase adjustment value of the column vector, and the index n can determine the phase adjustment value of the column vector, that is:
在另一种示例中，在rank>1的情况下，PMI对应的码本包括多个列向量，每个向量对应一个数据层，rank的取值即为数据层的个数，每个列向量对应一个v向量。该多个列向量对应的v向量可以相同，也可以不同。In another example, when rank>1, the codebook corresponding to the PMI includes multiple column vectors, each vector corresponds to a data layer, the value of rank is the number of data layers, and each column vector corresponds to a v vector. The v vectors corresponding to the multiple column vectors can be the same or different.
例如，以rank＝2的PMI为例，PMI对应的预编码矩阵中包括两个列向量，该两个列向量分别对应两个v向量，如表2所示。For example, taking the PMI of rank = 2 as an example, the precoding matrix corresponding to the PMI is includes two column vectors, which correspond to two v vectors respectively, as shown in Table 2.
表2
Table 2
其中，i1包括i1,1、i1,2和i1,3，i1,1和i1,2的作用与上述rank＝1的情况类似，i1,3指示2个数据层的v向量的第一维度和第二维度的索引之间的偏差量。i2的作用与上述rank＝1的情况类似。i1,3包括k1和k2，k1表示2个数据层的v向量的第一维度的索引的偏差量，k2表示2个数据层的v向量的第二维度的索引的偏差量。示例性的，在rank＝2的情况下，i1,3与第一维度的索引的偏差量、第二维度的索引的偏差量的关系如表3所示。Among them, i1 includes i1,1 , i1,2 and i1,3 . The functions of i1,1 and i1,2 are similar to those of the above rank=1 case. i1,3 indicates the deviation between the indexes of the first dimension and the second dimension of the v vector of the two data layers. The function of i2 is similar to that of the above rank=1 case.i 1,3 includes k1 and k2 . k1 represents the deviation of the index of the first dimension of the v vector of the two data layers, and k2 represents the deviation of the index of the second dimension of the v vector of the two data layers. Exemplarily, in the case of rank=2, the relationship between i1,3 and the deviation of the index of the first dimension and the deviation of the index of the second dimension is shown in Table 3.
表3
table 3
随着蜂窝通信技术的发展，通信系统使用的频谱越来越宽，基站配置的发送天线数目越来越多，基站的整体消耗功率越来越高。为此，如何节省基站的功耗称为通信技术研究的重点。例如，基站可以通过发射功率回退的方式来达到节省功耗。在发射功率动态回退的场景中，终端需要分别针对不同的发射功率，上报CSI测量结果。当前，基站需要配置多个CSI-ReportConfig，才能针对多种不同回退功率分别上报CSI。即每个CSI-RS-ReportConfig对应不同回退功率下的参考信号，例如，基站一共配置四个CSI-RS-ReportConfig，其中CSI-RS-ReportConfig 1的CSI-RS相较于SSB发射功率不回退，CSI-RS-ReportConfig 2的CSI-RS较SSB发射功率回退3dB，CSI-RS-ReportConfig 3的CSI-RS相较于SSB发射功率回退6dB，CSI-RS-ReportConfig 4的CSI-RS相较于SSB发射功率回退9dB。在这种情况下，终端需要针对每个CSI-RS-ReportConfig分别上报一个CSI测量结果。又例如，基站可以通过动态关断部分发送天线的方式节省功耗，类似的，当配置了4个对应不同天线关断情况的CSI-RS-ReportConfig，则终端需要上报4个CSI，其中每个CSI中包括1个PMI。PMI的上报开销较大，以8port CSI-RS，N1＝2，N2＝2，O1＝4，O2＝4，codebook-type＝2的配置方式为例，终端上报rank＝1的宽带PMI开销为8比特，包括i1,1为2比特，i1,2为2比特，i2为4比特；对于子带，若一共划分有9个子带，则子带PMI开销共计36比特，考虑到子带PMI需要复用宽带PMI中的i1,1，i1,2和i2，则子带累计上报的总比特数为36+8＝44比特。如此一来，上报4个完整PMI的开销较大。因此，在终端需要上报多中CSI的场景下，例如发射功率回退的场景下，如何降低多个CSI上报情况下PMI的上报开销，是亟待解决的问题。With the development of cellular communication technology, the spectrum used by communication systems is getting wider and wider, the number of transmitting antennas configured in base stations is increasing, and the overall power consumption of base stations is getting higher and higher. Therefore, how to save the power consumption of base stations has become the focus of communication technology research. For example, base stations can save power consumption by backing off the transmit power. In the scenario of dynamic backoff of transmit power, the terminal needs to report CSI measurement results for different transmit powers. Currently, the base station needs to configure multiple CSI-ReportConfigs to report CSI for different backoff powers. That is, each CSI-RS-ReportConfig corresponds to a reference signal under different backoff powers. For example, the base station is configured with a total of four CSI-RS-ReportConfigs, among which the CSI-RS of CSI-RS-ReportConfig 1 does not back off compared to the SSB transmit power, the CSI-RS of CSI-RS-ReportConfig 2 backs off 3dB compared to the SSB transmit power, the CSI-RS of CSI-RS-ReportConfig 3 backs off 6dB compared to the SSB transmit power, and the CSI-RS of CSI-RS-ReportConfig 4 backs off 9dB compared to the SSB transmit power. In this case, the terminal needs to report a CSI measurement result for each CSI-RS-ReportConfig. For another example, the base station can save power consumption by dynamically shutting down some transmitting antennas. Similarly, when 4 CSI-RS-ReportConfigs corresponding to different antenna shutdown conditions are configured, the terminal needs to report 4 CSIs, each of which includes 1 PMI. The reporting overhead of PMI is relatively large. Taking the configuration of 8port CSI-RS, N1=2, N2=2, O1=4, O2=4, and codebook-type=2 as an example, the terminal reports the broadband PMI overhead of rank=1 as 8 bits, including 2 bits for i1,1, 2 bits for i1,2, and 4 bits for i2. For subbands, if there are 9 subbands in total, the subband PMI overhead is 36 bits in total. Considering that the subband PMI needs to reuse i1,1, i1,2, and i2 in the broadband PMI, the total number of bits reported by the subband is 36+8=44 bits. As a result, the overhead of reporting 4 complete PMIs is relatively large. Therefore, in scenarios where the terminal needs to report multiple CSIs, such as in the scenario of transmit power fallback, how to reduce the PMI reporting overhead in the case of multiple CSI reports is an urgent problem to be solved.
有鉴于此，本申请提供了一种通信方法和装置，可以降低终端上报CSI的开销，尤其是降低上报PMI的开销。In view of this, the present application provides a communication method and apparatus, which can reduce the overhead of a terminal reporting CSI, especially reduce the overhead of reporting PMI.
为了便于理解本申请实施例，做出以下几点说明：In order to facilitate understanding of the embodiments of the present application, the following points are explained:
第一、在本申请中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。First, in this application, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.
第二、在本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。在本申请的文字描述中，字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b和c中的至少一项(个)，可以表示：a，或，b，或，c，或，a和b，或，a和c，或，b和c，或，a、b和c。其中a、b和c分别可以是单个，也可以是多个。Second, in this application, "at least one" means one or more, and "more than one" means two or more. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Where a, b and c can be single or multiple, respectively.
第三、在本申请中，“第一”、“第二”以及各种数字编号指示为了描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的消息等，而不是用于描述特定的顺序或先后次序。应理解，这样描述的对象在适当情况下可以互换，以便能够描述本申请的实施例以外的方案。Third, in the present application, "first", "second" and various numerical references are used to distinguish for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, different messages are distinguished, rather than used to describe a specific order or sequence. It should be understood that the objects described in this way can be interchanged where appropriate so as to be able to describe solutions other than the embodiments of the present application.
第四、在本申请中，“当……时”、“在……的情况下”以及“如果”等描述均指在某种客观情况下设备会做出相应的处理，并非是限定时间，且也不要求设备在实现时一定要有判断的动作，也不意味着存在其它限定。Fourth, in this application, descriptions such as "when...", "in the case of..." and "if" all mean that the device will make corresponding processing under certain objective circumstances, but do not limit the time, nor do they require the device to have a judgment action when implementing it, nor do they mean the existence of other limitations.
第五、在本申请中，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。Fifth, in this application, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed. Rather, the process, method, product, or apparatus may include other steps or elements not expressly listed or inherent to such processes, methods, products, or apparatus.
第六、在本申请中，“用于指示”可以包括用于直接指示和用于间接指示。当描述某一指示信息用于指示A时，可以包括该指示信息直接指示A或间接指示A，而并不代表该指示信息中一定携带有A。Sixth, in this application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used for indicating A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.
本申请实施例涉及的指示方式应理解为涵盖可以使得待指示方获知待指示信息的各种方法。待指示信息可以作为整体一起发送，也可以分成多个子信息分开发送，而且这些子信息的发送周期和/或发送时机可以相同，也可以不同，本申请对具体的发送方法不作限定。The indication method involved in the embodiments of the present application should be understood to include various methods that can enable the party to be indicated to know the information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and/or sending time of these sub-information can be the same or different. The present application does not limit the specific sending method.
本申请实施例中的“指示信息”可以是显式指示，即通过信令直接指示，或者根据信令指示的参数，结合其他规则或结合其他参数或通过推导获得。也可以是隐式指示，即根据规则或关系，或根据其他参数，或推导获得。本申请对此不作具体限定。The "indication information" in the embodiments of the present application may be an explicit indication, i.e., directly indicated by signaling, or obtained by combining other rules or other parameters or by deduction according to the parameters indicated by the signaling. It may also be an implicit indication, i.e., obtained according to a rule or relationship, or according to other parameters, or by deduction. The present application does not make specific restrictions on this.
第七、在本申请中，“协议”可以是指通信领域的标准协议，例如可以包括5G协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。“预定义”可以包括预先定义。例如，协议定义。“预配置”可以通过在设备中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。Seventh, in this application, "protocol" may refer to a standard protocol in the field of communications, such as 5G protocol, NR protocol, and related protocols used in future communication systems, which are not limited in this application. "Predefined" may include pre-definition. For example, protocol definition. "Preconfiguration" can be implemented by pre-saving corresponding codes, tables, or other methods that can be used to indicate relevant information in the device, and this application does not limit its specific implementation method.
第八、在本申请中，“存储”可以是指保存在一个或者多个存储器中。所述一个或者多个存储器可以是单独的设置，也可以是集成在编码器或者译码器、处理器、或通信装置中。所述一个或者多个存储器，也可以是一部分单独设置，一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质，本申请并不对此限定。Eighth, in this application, "storage" may refer to storage in one or more memories. The one or more memories may be separately set or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories may also be partially separately set and partially integrated in a decoder, a processor, or a communication device. The type of memory may be any form of storage medium, which is not limited in this application.
第九、在本申请中，如果没有逻辑冲突，“无线通信”还可以简称为“通信”，“通信”还可以描述为“数据传输”、“信息传输”、“数据处理”等。“上报”、“反馈”和“发送”可以互换。Ninth, in this application, if there is no logical conflict, "wireless communication" can also be referred to as "communication", and "communication" can also be described as "data transmission", "information transmission", "data processing", etc. "Report", "feedback" and "send" can be interchangeable.
下文将结合附图详细说明本申请实施例提供的通信方法，如可以应用于上述图1所示的通信系统中。The communication method provided in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings, such as being applicable to the communication system shown in FIG. 1 above.
图2是本申请实施例提供的通信方法的流程示例图。下面以网络设备和终端设备交互为例，对本申请的通信方法进行说明。如图2所示，该方法包括如下多个步骤。Fig. 2 is a flowchart of a communication method provided by an embodiment of the present application. The communication method of the present application is described below by taking the interaction between a network device and a terminal device as an example. As shown in Fig. 2, the method includes the following steps.
S210，网络设备向终端设备发送M个CSI-RS；S210, the network device sends M CSI-RSs to the terminal device;
对应的，终端设备接收来自网络设备的M个CSI-RS，M为正整数。Correspondingly, the terminal device receives M CSI-RS from the network device, where M is a positive integer.
其中，该M个CSI-RS用于信道估计或信道探测，如测量RSRQ，SINR，CQI，和/或PMI等参数。具体地，终端设备可以根据该M个CSI-RS测量该网络设备的信道，并得到终端设备到该网络设备的信道状态信息。The M CSI-RS are used for channel estimation or channel detection, such as measuring parameters such as RSRQ, SINR, CQI, and/or PMI. Specifically, the terminal device can measure the channel of the network device according to the M CSI-RS and obtain channel state information from the terminal device to the network device.
可选地，M个CSI-RS的功率偏移量不完全相同。Optionally, the power offsets of the M CSI-RSs are not completely the same.
示例的，CSI-RS可以对应参数powerControlOffset，powerControlOffset是指假定的PDSCH的每个资源元素的能量(energy per resource element，EPRE)相对于CSI-RS的EPRE的功率偏移量。CSI-RS的功率偏移量可以用于计算M个CSI-RS对应的CQI。该实现方式适用于发射功率回退场景和天线关断。For example, CSI-RS can correspond to the parameter powerControlOffset, which refers to the power offset of the energy per resource element (EPRE) of each resource element of the assumed PDSCH relative to the EPRE of the CSI-RS. The power offset of the CSI-RS can be used to calculate the CQI corresponding to the M CSI-RS. This implementation is suitable for transmit power backoff scenarios and antenna shutdown.
可选地，M个CSI-RS的PDSCH的功率偏移量不完全相同。Optionally, the power offsets of the PDSCHs of the M CSI-RSs are not completely the same.
可选地，M个CSI-RS的同步信号(synchronization signal，SS)的功率偏移量不完全相同。Optionally, the power offsets of the synchronization signals (SS) of the M CSI-RSs are not exactly the same.
示例的，CSI-RS可以对应参数powerControlOffsetSS，powerControlOffsetSS是指CSI-RS的EPRE相对于同步信号的EPRE的功率偏移。即同步信号功率控制偏移量可以是相对于同步信号的功率偏移量，该实现方式适用于发射功率回退场景和天线关断。For example, CSI-RS may correspond to the parameter powerControlOffsetSS, where powerControlOffsetSS refers to the power offset of the EPRE of the CSI-RS relative to the EPRE of the synchronization signal. That is, the synchronization signal power control offset may be the power offset relative to the synchronization signal, and this implementation is suitable for transmit power fallback scenarios and antenna shutdown.
可选地，M个CSI-RS的端口数相同。可选地，一个CSI-RS的端口数可以理解为该CSI-RS传输所使用的端口数，或者说，一个CSI-RS的端口数可以理解为该CSI-RS资源被配置的端口数。Optionally, the number of ports of the M CSI-RSs is the same. Optionally, the number of ports of a CSI-RS can be understood as the number of ports used for the CSI-RS transmission, or in other words, the number of ports of a CSI-RS can be understood as the number of ports configured for the CSI-RS resource.
因此，在不同的应用场景中，当信道的测量环境发生变化，或者说终端需要上报多中配置下的信道状态信息时，例如发射功率回退场景或者天线关断场景中，终端设备可以通过上报第一PMI和第一指示信息，替代上报多个完整PMI，实现终端上报的预编码矩阵的信息的压缩，从而降低信令开销，提升传输性能。Therefore, in different application scenarios, when the channel measurement environment changes, or the terminal needs to report channel status information under multiple configurations, such as in a transmit power fallback scenario or an antenna shutdown scenario, the terminal device can report the first PMI and the first indication information instead of reporting multiple complete PMIs, thereby compressing the precoding matrix information reported by the terminal, thereby reducing signaling overhead and improving transmission performance.
可选地，在执行步骤S210之前，网络设备还可以向终端设备发送上报配置信息，即用于传输M个CSI-RS的资源配置，对应的，终端设备接收来自网络设备的上报配置信息。Optionally, before executing step S210, the network device may also send reporting configuration information to the terminal device, that is, resource configuration for transmitting M CSI-RSs, and correspondingly, the terminal device receives the reporting configuration information from the network device.
下面对M个CSI-RS的资源配置方式进行具体说明。The resource configuration method of M CSI-RS is described in detail below.
在一种可能的实现方式中，在终端设备接收M个CSI-RS之前，网络设备还可以向终端设备发送第一上报配置信息，对应的，终端设备接收来自网络设备的第一上报配置信息。其中，第一上报配置信息关联M个CSI-RS的资源。In a possible implementation, before the terminal device receives the M CSI-RS, the network device may also send first reporting configuration information to the terminal device, and correspondingly, the terminal device receives the first reporting configuration information from the network device, wherein the first reporting configuration information is associated with the resources of the M CSI-RS.
示例性的，第一上报配置信息用于配置M个CSI-RS资源集合，M个CSI-RS资源分别属于M个CSI-RS资源集合。进一步地，终端设备可以在M个CSI-RS资源上分别接收M个CSI-RS。Exemplarily, the first reported configuration information is used to configure M CSI-RS resource sets, and the M CSI-RS resources belong to the M CSI-RS resource sets respectively. Further, the terminal device can receive M CSI-RSs on the M CSI-RS resources respectively.
应理解，该M个CSI-RS资源与M个CSI-RS一一对应，也就是说，根据第一上报配置信息，网络设备可以在M个CSI-RS资源上分别发送M个CSI-RS，对应的。终端设备可以在M个CSI-RS资源上分别接收M个CSI-RS。It should be understood that the M CSI-RS resources correspond to the M CSI-RSs one-to-one, that is, according to the first reported configuration information, the network device can send M CSI-RSs on the M CSI-RS resources respectively, and correspondingly, the terminal device can receive M CSI-RSs on the M CSI-RS resources respectively.
可选地，终端设备接收一个第一上报配置信息(例如CSI-reportconfig)，该一个第一上报配置信息包括一个CSI资源配置(例如CSI-resourceconfig)，该一个CSI资源配置包括M个CSI-RS资源集合(例如CSI-resource set)，每个CSI-RS资源集合包括一个CSI-RS资源(例如CSI-resource)，即终端设备根据该一个第一上报配置信息可以确定M个CSI-RS资源。Optionally, the terminal device receives a first reporting configuration information (e.g., CSI-reportconfig), the first reporting configuration information includes a CSI resource configuration (e.g., CSI-resourceconfig), the CSI resource configuration includes M CSI-RS resource sets (e.g., CSI-resource set), each CSI-RS resource set includes a CSI-RS resource (e.g., CSI-resource), that is, the terminal device can determine the M CSI-RS resources according to the first reporting configuration information.
可选地，终端设备接收一个第一上报配置信息(例如CSI-reportconfig)，该一个第一上报配置信息包括一个CSI资源配置(例如CSI-resourceconfig)，该一个CSI资源配置包括一个CSI-RS资源集合(例如CSI-resource set)，该一个CSI-RS资源集合包括M个CSI-RS资源(例如CSI-resource)，即终端设备根据该一个第一上报配置信息可以确定M个CSI-RS资源。Optionally, the terminal device receives a first reporting configuration information (e.g., CSI-reportconfig), the first reporting configuration information includes a CSI resource configuration (e.g., CSI-resourceconfig), the CSI resource configuration includes a CSI-RS resource set (e.g., CSI-resource set), the CSI-RS resource set includes M CSI-RS resources (e.g., CSI-resource), that is, the terminal device can determine the M CSI-RS resources according to the first reporting configuration information.
可选地，终端设备接收一个第一上报配置信息(例如CSI-reportconfig)，该一个第一上报配置信息包括M个CSI资源配置(例如CSI-resourceconfig)，每个CSI资源配置包括一个CSI-RS资源集合(例如CSI-resource set)，每个CSI-RS资源集合包括一个CSI-RS资源(例如CSI-resource)，即终端设备根据该一个第一上报配置信息可以确定M个CSI-RS资源。Optionally, the terminal device receives a first reporting configuration information (e.g., CSI-reportconfig), the first reporting configuration information includes M CSI resource configurations (e.g., CSI-resourceconfig), each CSI resource configuration includes a CSI-RS resource set (e.g., CSI-resource set), each CSI-RS resource set includes a CSI-RS resource (e.g., CSI-resource), that is, the terminal device can determine the M CSI-RS resources according to the first reporting configuration information.
在另一种可能的实现方式中，在终端设备接收M个CSI-RS之前，网络设备还可以向终端设备发送M个第二上报配置信息，对应的，终端设备接收来自网络设备的M个第二上报配置信息。其中，M个第二上报配置信息分别关联M个CSI-RS的资源。In another possible implementation, before the terminal device receives the M CSI-RS, the network device may also send M second reporting configuration information to the terminal device, and correspondingly, the terminal device receives the M second reporting configuration information from the network device. The M second reporting configuration information are respectively associated with the resources of the M CSI-RS.
示例性的，M个第二上报配置信息分别关联M个CSI-RS资源集合，M个CSI-RS资源分别属于M个CSI-RS资源集合。进一步地，终端设备可以在M个CSI-RS资源上分别接收M个CSI-RS。Exemplarily, the M second reporting configuration information are respectively associated with M CSI-RS resource sets, and the M CSI-RS resources respectively belong to the M CSI-RS resource sets. Further, the terminal device can receive M CSI-RSs on the M CSI-RS resources respectively.
应理解，该M个CSI-RS资源与M个CSI-RS一一对应，也就是说，根据M个第二上报配置信息中每个第二上报配置，关联M个CSI-RS资源中的一个CSI-RS资源，网络设备可以在M个CSI-RS资源上分别发送M个CSI-RS，对应的。终端设备可以在M个CSI-RS资源上分别接收M个CSI-RS。It should be understood that the M CSI-RS resources correspond to the M CSI-RSs one-to-one, that is, according to each second reporting configuration in the M second reporting configuration information, one CSI-RS resource among the M CSI-RS resources is associated, and the network device can send M CSI-RSs on the M CSI-RS resources respectively, and correspondingly, the terminal device can receive M CSI-RSs on the M CSI-RS resources respectively.
可选地，终端设备接收一个配置信息组，该配置信息组包括M个第二上报配置信息(例如CSI-reportconfig)，每个第二上报配置信息包括一个CSI资源配置(例如CSI-resourceconfig)，每个CSI资源配置包括一个CSI-RS资源集合(例如CSI-resource set)，每个CSI-RS资源集合包括一个CSI-RS资源(例如CSI-resource)，即终端设备根据该多个第一上报配置信息可以确定M个CSI-RS资源。Optionally, the terminal device receives a configuration information group, which includes M second reporting configuration information (e.g., CSI-reportconfig), each second reporting configuration information includes a CSI resource configuration (e.g., CSI-resourceconfig), each CSI resource configuration includes a CSI-RS resource set (e.g., CSI-resource set), and each CSI-RS resource set includes a CSI-RS resource (e.g., CSI-resource), that is, the terminal device can determine the M CSI-RS resources based on the multiple first reporting configuration information.
基于上述M个CSI-RS的资源配置方式，终端设备可以根据第一上报配置信息或者第二上报配置信息，执行上述步骤S210，即接收来自网络设备的M个CSI-RS。Based on the resource configuration method of the M CSI-RSs, the terminal device may perform the step S210 according to the first reporting configuration information or the second reporting configuration information, that is, receive the M CSI-RSs from the network device.
在一种示例中，网络设备向终端设备发送指示信息，对应的，终端设备接收来自网络设备的指示信息。其中，该指示信息指示M个CSI-RS资源集合。其中，M个CSI-RS资源集合与M个CSI-RS一一对应。进一步地，终端设备可以在M个CSI-RS资源集合中分别接收M个CSI-RS。In one example, a network device sends indication information to a terminal device, and correspondingly, the terminal device receives the indication information from the network device. The indication information indicates M CSI-RS resource sets. The M CSI-RS resource sets correspond one-to-one to the M CSI-RSs. Further, the terminal device can receive M CSI-RSs in the M CSI-RS resource sets respectively.
在另一种示例中，终端设备确定P个CSI-RS资源组合，P个CSI-RS资源组合中的每个CSI-RS资源组合中的Q个CSI-RS资源分别位于Q个CSI-RS资源集合中，Q个CSI-RS资源集合包括M个CSI-RS资源集合；或者说，P个CSI-RS资源组合中的每个CSI-RS资源组合中的Q个CSI-RS资源之间的QCL关系满足typeD，即空域滤波器相同。其中，M个CSI-RS资源包含于P个CSI-RS资源组合中的第一CSI-RS资源组合，M个CSI-RS资源分别属于M个CSI-RS资源集合，P和Q均为正整数。In another example, the terminal device determines P CSI-RS resource combinations, and the Q CSI-RS resources in each of the P CSI-RS resource combinations are respectively located in Q CSI-RS resource sets, and the Q CSI-RS resource sets include M CSI-RS resource sets; or, in other words, the QCL relationship between the Q CSI-RS resources in each of the P CSI-RS resource combinations satisfies typeD, that is, the spatial domain filters are the same. Among them, the M CSI-RS resources are included in the first CSI-RS resource combination in the P CSI-RS resource combinations, and the M CSI-RS resources belong to the M CSI-RS resource sets, respectively, and P and Q are both positive integers.
具体地，终端设备确定P个CSI-RS资源组合，可以包括但不限于以下两种实现方式。Specifically, the terminal device determines P CSI-RS resource combinations, which may include but are not limited to the following two implementations.
方式一：网络设备向终端设备发送配置信息，指示P个CSI-RS资源组合。示例性的，网络设备可以通过RRC或DCI向终端设备发送配置信息，用于配置P个CSI-RS资源组合，即可以理解为网络设备向终端设备指示了P个CSI-RS资源组合。Method 1: The network device sends configuration information to the terminal device to indicate P CSI-RS resource combinations. Exemplarily, the network device may send configuration information to the terminal device via RRC or DCI to configure P CSI-RS resource combinations, which can be understood as the network device indicating P CSI-RS resource combinations to the terminal device.
方式二：该P个CSI-RS资源组合也可以是预配置的，例如网络设备为终端设备预配置了某一规则，终端设备可以根据该规则自主确定P个CSI-RS资源组合。Method 2: The P CSI-RS resource combinations may also be preconfigured. For example, the network device preconfigures a certain rule for the terminal device, and the terminal device may autonomously determine the P CSI-RS resource combinations according to the rule.
S220，终端设备根据M个CSI-RS确定第一CSI。S220, the terminal device determines the first CSI according to M CSI-RSs.
具体的，终端设备通过对M个CSI-RS进行测量或计算可以确定第一CSI，具体实现方式可参考现有协议中的相关描述，为了简洁，此处不再过多赘述。Specifically, the terminal device can determine the first CSI by measuring or calculating M CSI-RSs. The specific implementation method can refer to the relevant description in the existing protocol. For the sake of brevity, it will not be described in detail here.
其中，第一CSI包括N个RI，N为正整数。其中，N个RI对应N个CSI，或者说，N个RI中每个RI都对应一个CSI。每个CSI中包括一个RI。The first CSI includes N RIs, where N is a positive integer. The N RIs correspond to N CSIs, or in other words, each of the N RIs corresponds to one CSI. Each CSI includes one RI.
可选地，N大于M。示例性的，在发射功率回退场景中，网络设备可以配置1个CSI-RS资源，终端设备基于该一个CSI-RS资源可以测量或计算得到多个CSI信息。例如，当M等于1，N等于3时，终端设备可以根据CSI-RS#1测量或计算得到CSI#1、CSI#2和CSI#3，也即终端设备根据CSI-RS#1得到三个CSI；又例如，当M等于2时，N等于5，则终端设备可以根据CSI-RS#1和CSI-RS#2测量或计算得到CSI#1、CSI#2、CSI#3、CSI#4和CSI#5。Optionally, N is greater than M. Exemplarily, in a transmit power fallback scenario, the network device may configure one CSI-RS resource, and the terminal device may measure or calculate multiple CSI information based on the one CSI-RS resource. For example, when M is equal to 1 and N is equal to 3, the terminal device may measure or calculate CSI#1, CSI#2, and CSI#3 based on CSI-RS#1, that is, the terminal device may obtain three CSIs based on CSI-RS#1; for another example, when M is equal to 2 and N is equal to 5, the terminal device may measure or calculate CSI#1, CSI#2, CSI#3, CSI#4, and CSI#5 based on CSI-RS#1 and CSI-RS#2.
可选地，N等于M。例如，当M等于2，N等于2时，终端设备可以根据CSI-RS#1和CSI-RS#2分别测量或计算得到CSI#1和CSI#2。S230，终端设备根据第一CSI生成第一上报信息。Optionally, N is equal to M. For example, when M is equal to 2 and N is equal to 2, the terminal device may measure or calculate CSI#1 and CSI#2 according to CSI-RS#1 and CSI-RS#2, respectively. S230: The terminal device generates first reporting information according to the first CSI.
其中，第一上报信息包括第一PMI、N个RI和第一指示信息。The first reporting information includes the first PMI, N RIs and first indication information.
具体地，N个RI包括第一RI和K个第二RI，第一RI对应第一预编码矩阵，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应K个第二RI，K个第二RI均小于第一RI，K为正整数。Specifically, the N RIs include a first RI and K second RIs, the first RI corresponds to a first precoding matrix, the first indication information indicates K second precoding matrices from the first precoding matrix, the K second precoding matrices correspond to K second RIs respectively, the K second RIs are all smaller than the first RI, and K is a positive integer.
以下对第一CSI包括的参数分别描述。The parameters included in the first CSI are described below.
第一PMI为M个CSI-RS中第一CSI-RS对应的PMI，或者说，第一PMI是终端设备根据M个CSI-RS中的第一CSI-RS测量或计算得到的。The first PMI is the PMI corresponding to the first CSI-RS among the M CSI-RSs, or in other words, the first PMI is obtained by the terminal device by measuring or calculating the first CSI-RS among the M CSI-RSs.
可选地，第一CSI-RS为M个CSI-RS中发射功率最大的信号；或者，第一CSI-RS为M个CSI-RS中端口数最多的信号；或者，第一CSI-RS为M个CSI-RS中索引值最小的信号；或者，第一CSI-RS是根据网络设备的指示确定的。Optionally, the first CSI-RS is the signal with the largest transmission power among the M CSI-RSs; or, the first CSI-RS is the signal with the largest number of ports among the M CSI-RSs; or, the first CSI-RS is the signal with the smallest index value among the M CSI-RSs; or, the first CSI-RS is determined based on an instruction from a network device.
在本申请实施例中，第一PMI可以包括第一宽带PMI，也即，第一预编码矩阵为第一PMI的第一宽带PMI对应的第一宽带预编码矩阵；或者，第一PMI可以包括第一宽带PMI和L个第一子带PMI，也即，第一预编码矩阵包括第一宽带PMI对应的第一宽带预编码矩阵和L个第一子带PMI对应的L个第一子带预编码矩阵。其中，第一宽带PMI关联L个第一子带PMI，第一宽带预编码矩阵关联L个第一子带预编码矩阵。In the embodiment of the present application, the first PMI may include the first wideband PMI, that is, the first precoding matrix is the first wideband precoding matrix corresponding to the first wideband PMI of the first PMI; or, the first PMI may include the first wideband PMI and L first subband PMIs, that is, the first precoding matrix includes the first wideband precoding matrix corresponding to the first wideband PMI and L first subband precoding matrices corresponding to the L first subband PMIs. The first wideband PMI is associated with the L first subband PMIs, and the first wideband precoding matrix is associated with the L first subband precoding matrices.
可选地，N大于或者等于K+1。Optionally, N is greater than or equal to K+1.
示例性的，N个RI包括一个第一RI和K个第二RI。第一RI与第一PMI对应，或者说，第一RI和第一PMI都是基于第一CSI-RS测量得到的。Exemplarily, the N RIs include a first RI and K second RIs. The first RI corresponds to the first PMI, or in other words, the first RI and the first PMI are both obtained based on the first CSI-RS measurement.
可选地，第一CSI还包括N个CQI，N个RI一一对应N个CQI，或者说，N个RI中的每个RI均对应一个CQI，或者说，终端设备根据每个RI，得到一个CQI。进一步，可选地，N个CQI中包括一个第一CQI以及K个第二CQI。所述第一RI和第一CQI可以是终端设备根据第一CSI-RS测量或计算得到的。Optionally, the first CSI also includes N CQIs, and the N RIs correspond to the N CQIs one by one, or in other words, each of the N RIs corresponds to a CQI, or in other words, the terminal device obtains a CQI according to each RI. Further, optionally, the N CQIs include a first CQI and K second CQIs. The first RI and the first CQI can be obtained by the terminal device according to the first CSI-RS measurement or calculation.
可选地，N个RI中还可以包括R个第三RI，第三RI与第一RI相等，且第三RI对应的第三PMI与第一PMI相同，所述R为正整数。也就是说，第三RI对应的场景为功率不回退的场景，则终端设备可以不上报该第三RI对应的第三预编码矩阵，对应的，网络设备可以将第一PMI对应的第一预编码矩阵作为该第三RI对应的预编码矩阵。第一指示信息仅从第一预编码矩阵中指示上报取值小于第一RI的第二RI对应的预编码矩阵，能够减少上报比特数，该实现方式可以节省信令开销，提升设备间传输性能。Optionally, the N RIs may also include R third RIs, the third RI is equal to the first RI, and the third PMI corresponding to the third RI is the same as the first PMI, and R is a positive integer. In other words, if the scenario corresponding to the third RI is a scenario in which power is not backed off, the terminal device may not report the third precoding matrix corresponding to the third RI, and correspondingly, the network device may use the first precoding matrix corresponding to the first PMI as the precoding matrix corresponding to the third RI. The first indication information only indicates the precoding matrix corresponding to the second RI whose value is less than the first RI from the first precoding matrix, which can reduce the number of reported bits. This implementation method can save signaling overhead and improve transmission performance between devices.
可选地，N等于R+K+1。例如，N等于4，则4个CSI包括4个RI，此时4个CSI中包括的4个RI分别为4，4，4，2，此时K为1，R等于2；再例如，4个CSI中包括的4个RI分别为4，4，3，2，此时K为2，R等于1；又例如，4个CSI中包括的4个RI分别为4，3，3，2，或者4，3，2，1等，此时K为3，R等于0。Optionally, N is equal to R+K+1. For example, if N is equal to 4, then the 4 CSIs include 4 RIs, and the 4 RIs included in the 4 CSIs are 4, 4, 4, and 2, respectively. In this case, K is 1, and R is equal to 2. For another example, the 4 RIs included in the 4 CSIs are 4, 4, 3, and 2, respectively. In this case, K is 2, and R is equal to 1. For another example, the 4 RIs included in the 4 CSIs are 4, 3, 3, and 2, or 4, 3, 2, and 1, respectively. In this case, K is 3, and R is equal to 0.
可选地，基于上述步骤S210，在M个CSI-RS资源包括在一个CSI-RS资源组合的情况下，第一上报信息还包括第一索引，第一索引为第一CSI-RS资源组合的索引；或者，第一索引为M个CSI-RS资源中的第一CSI-RS资源。Optionally, based on the above step S210, when M CSI-RS resources are included in a CSI-RS resource combination, the first reporting information also includes a first index, and the first index is the index of the first CSI-RS resource combination; or, the first index is the first CSI-RS resource among the M CSI-RS resources.
可选地，第一CSI-RS资源为M个CSI-RS资源中索引最小的CSI-RS资源。Optionally, the first CSI-RS resource is a CSI-RS resource with the smallest index among the M CSI-RS resources.
在一种示例中，终端设备根据第一预编码矩阵生成第一指示信息。In one example, the terminal device generates first indication information according to the first precoding matrix.
也就是说，终端设备可以根据接收到的M个CSI-RS进行测量或计算得到的第一预编码矩阵。进一步地，可以根据第一预编码矩阵生成第一指示信息，并上报第一指示信息。相比上报K个完整的PMI，第一指示信息能够压缩上报预编码的比特数，节省信令开提高传输性能。That is to say, the terminal device can measure or calculate the first precoding matrix based on the received M CSI-RS. Furthermore, the first indication information can be generated based on the first precoding matrix and reported. Compared with reporting K complete PMIs, the first indication information can compress the number of reported precoding bits, save signaling and improve transmission performance.
下面对第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵的具体实现方式进行简单说明。The specific implementation manner in which the first indication information indicates K second precoding matrices from the first precoding matrix is briefly described below. bright.
在一种可能的实现方式中，第一指示信息指示第一预编码矩阵中的X个列向量，X个列向量为预编码矩阵中CQI最大的X个列向量，X为小于或等于第一RI的正整数。In a possible implementation manner, the first indication information indicates X column vectors in the first precoding matrix, where the X column vectors are X column vectors with maximum CQI in the precoding matrix, and X is a positive integer less than or equal to the first RI.
在一种示例中，第一预编码矩阵包括第一宽带预编码矩阵，K个第二预编码矩阵为K个第二宽带预编码矩阵，或者，第一预编码矩阵包括第一宽带预编码矩阵和L个第一子带预编码矩阵，K个第二预编码矩阵为K个第二宽带预编码矩阵和K*L个第二子带预编码矩阵；其中，K个第二宽带预编码矩阵中每个第二宽带预编码矩阵关联L个第二子带预编码矩阵，L为正整数。In one example, the first precoding matrix includes a first wideband precoding matrix, and the K second precoding matrices are K second wideband precoding matrices, or the first precoding matrix includes a first wideband precoding matrix and L first subband precoding matrices, and the K second precoding matrices are K second wideband precoding matrices and K*L second subband precoding matrices; wherein each second wideband precoding matrix in the K second wideband precoding matrices is associated with L second subband precoding matrices, and L is a positive integer.
在另一种示例中，第一预编码矩阵包括第一宽带预编码矩阵和L个第一子带预编码矩阵，所述第一指示信息用于从第一宽带预编码矩阵中指示K个第二宽带预编码矩阵，第一指示信息还包括K个第二宽带预编码矩阵对应的K*L个第二子带PMI。In another example, the first precoding matrix includes a first wideband precoding matrix and L first subband precoding matrices, the first indication information is used to indicate K second wideband precoding matrices from the first wideband precoding matrix, and the first indication information also includes K*L second subband PMIs corresponding to the K second wideband precoding matrices.
该方式下，对于第二宽带预编码矩阵，第一指示信息通过压缩的方式从第一预编码矩阵中指示第二宽带预编码矩阵，对于第二子带预编码矩阵，第一指示信息可以直接携带第二子带PMI。In this manner, for the second wideband precoding matrix, the first indication information indicates the second wideband precoding matrix from the first precoding matrix in a compressed manner, and for the second subband precoding matrix, the first indication information may directly carry the second subband PMI.
可选地，X为K个第二RI中的最大值。Optionally, X is the maximum value among K second RIs.
具体地，针对第一指示信息指示第一宽带预编码矩阵中的X个列向量，可以包括但不限于以下实现方式。Specifically, the first indication information indicates X column vectors in the first wideband precoding matrix, which may include but is not limited to the following implementations.
方式一：第一指示信息包括X个列向量的索引值。Mode 1: The first indication information includes index values of X column vectors.
示例性的，第一指示信息包括第一PMI的第一宽带PMI对应的第一宽带预编码矩阵的X个列向量的索引值以及L个第一子带PMI对应的L个第一子带预编码矩阵；或者，第一指示信息包括第一PMI中第一宽带PMI对应的第一宽带预编码矩阵的X个列向量的索引值以及L个第一子带PMI对应的L个第一子带预编码矩阵的X个列向量的索引值。Exemplarily, the first indication information includes the index values of X column vectors of the first broadband precoding matrix corresponding to the first broadband PMI of the first PMI and the L first subband precoding matrices corresponding to the L first subband PMIs; or, the first indication information includes the index values of X column vectors of the first broadband precoding matrix corresponding to the first broadband PMI in the first PMI and the index values of X column vectors of the L first subband precoding matrices corresponding to the L first subband PMIs.
其中，X个列向量为预编码矩阵中CQI最大的X个列向量，可以理解为：第一宽带预编码矩阵的X个列向量的索引值为第一宽带预编码矩阵中信道质量最好的X个列向量的索引值，或者是第一宽带预编码矩阵中CQI最强的X个列向量的索引值。第一子带预编码矩阵的X个列向量的索引值为第一子带预编码矩阵中信道质量最好的X个列向量的索引值，或者是第一子带预编码矩阵中CQI最强的X个列向量的索引值。Among them, the X column vectors are the X column vectors with the largest CQI in the precoding matrix, which can be understood as: the index values of the X column vectors of the first wideband precoding matrix are the index values of the X column vectors with the best channel quality in the first wideband precoding matrix, or the index values of the X column vectors with the strongest CQI in the first wideband precoding matrix. The index values of the X column vectors of the first subband precoding matrix are the index values of the X column vectors with the best channel quality in the first subband precoding matrix, or the index values of the X column vectors with the strongest CQI in the first subband precoding matrix.
可选地，第一宽带预编码矩阵的X个列向量的索引值与每个第一子带预编码矩阵的X个列向量的索引值中的每个索引值通过比特表示，即传输每个索引值的比特数为第一RI取以2为底的对数，再做上取整。Optionally, the index values of the X column vectors of the first wideband precoding matrix and each index value of the index values of the X column vectors of each first subband precoding matrix are connected by The bit representation is that the number of bits for transmitting each index value is the logarithm of the first RI with base 2, and then rounded up.
示例性的，假设第一PMI的第一宽带PMI对应的第一宽带预编码矩阵满足：
Exemplarily, it is assumed that the first wideband precoding matrix corresponding to the first wideband PMI of the first PMI satisfies:
网络设备向终端设备发送了4个CSI-RS，终端设备通过测量4个CSI-RS获取4个RI，分别为4，4，2，1，即第一RI等于4，则终端设备可以确定N个RI包括一个第一RI(第一RI＝4)，两个第二RI(两个第二RI分别为RI＝2和RI＝1)，一个第三RI(第三RI＝4)，即第一指示信息指示2(即K＝2)个第二宽带预编码矩阵。其中，第一CSI-RS对应的第一PMI的第一宽带PMI对应的第一宽带预编码矩阵有4列，从左至右分别为第1，2，3和4列。每一列的索引需要至少2比特进行量化。如表4所示，假设第一指示信息中与列向量对应的传输比特以及第一宽带预编码矩阵的列向量(或者说，第一宽带预编码矩阵的列向量的索引值)之间的关联关系满足：The network device sends 4 CSI-RS to the terminal device. The terminal device obtains 4 RIs by measuring the 4 CSI-RS, which are 4, 4, 2, and 1, respectively. That is, the first RI is equal to 4. Then the terminal device can determine that the N RIs include a first RI (first RI=4), two second RIs (the two second RIs are RI=2 and RI=1, respectively), and a third RI (third RI=4), that is, the first indication information indicates 2 (i.e., K=2) second broadband precoding matrices. Among them, the first broadband precoding matrix corresponding to the first broadband PMI of the first PMI corresponding to the first CSI-RS has 4 columns, which are the 1st, 2nd, 3rd and 4th columns from left to right. The index of each column requires at least 2 bits for quantization. As shown in Table 4, it is assumed that the correlation between the transmission bit corresponding to the column vector in the first indication information and the column vector of the first broadband precoding matrix (or the index value of the column vector of the first broadband precoding matrix) satisfies:
表4
Table 4
例如，第一宽带预编码矩阵中信道质量(或者CQI强度)由高到低排序为第1，2，4，3列，则第一指示信息包括2个(即X＝2)列向量的索引值，分别为00和01，共4比特，指示RI＝2和RI＝1对应的第二宽带预编码矩阵。对应的，网络设备在接收到第一PMI和第一指示信息后，基于上述表4可以确定有两个RI小于第一RI。进一步地，网络设备可以从第一宽带预编码矩阵的列向量中获取第1和2列，合并生成第二RI(RI＝2)对应的第二宽带预编码矩阵；以及，从第一宽带预编码矩阵的列向量中获取第1列，生成第二RI(RI＝1)对应的第二宽带预编码矩阵。For example, the channel qualities (or CQI strengths) in the first broadband precoding matrix are sorted from high to low as columns 1, 2, 4, and 3. The indication information includes the index values of 2 (i.e., X=2) column vectors, which are 00 and 01, respectively, for a total of 4 bits, indicating the second broadband precoding matrix corresponding to RI=2 and RI=1. Correspondingly, after receiving the first PMI and the first indication information, the network device can determine that there are two RIs less than the first RI based on the above Table 4. Furthermore, the network device can obtain the 1st and 2nd columns from the column vector of the first broadband precoding matrix, and combine them to generate the second broadband precoding matrix corresponding to the second RI (RI=2); and obtain the 1st column from the column vector of the first broadband precoding matrix to generate the second broadband precoding matrix corresponding to the second RI (RI=1).
又例如，第一宽带预编码矩阵中信道质量(或者CQI强度)由高到低排序为第2，3，4，1列，则第一指示信息为01和10，可以指示RI＝2和RI＝1对应的第二宽带预编码矩阵。对应的，网络设备在接收到第一PMI和第一指示信息后，基于上述表4可以确定有两个RI小于第一RI。进一步地，网络设备可以从第一宽带预编码矩阵的列向量中获取第2和3列，合并生成第二RI(RI＝2)对应的第二宽带预编码矩阵；以及，从第一宽带预编码矩阵的列向量中获取第2列，生成第二RI(RI＝1)对应的第二宽带预编码矩阵。For another example, the channel quality (or CQI strength) in the first broadband precoding matrix is sorted from high to low as the 2nd, 3rd, 4th, and 1st columns, and the first indication information is 01 and 10, which can indicate the second broadband precoding matrix corresponding to RI=2 and RI=1. Correspondingly, after receiving the first PMI and the first indication information, the network device can determine that there are two RIs less than the first RI based on the above Table 4. Furthermore, the network device can obtain the 2nd and 3rd columns from the column vector of the first broadband precoding matrix, and merge them to generate the second broadband precoding matrix corresponding to the second RI (RI=2); and obtain the 2nd column from the column vector of the first broadband precoding matrix to generate the second broadband precoding matrix corresponding to the second RI (RI=1).
可选地，第二子带PMI可以基于对应的第二宽带预编码矩阵测量或计算得到，因此终端设备可以按照现有协议上报第二子带PMI，即i2。Optionally, the second subband PMI may be measured or calculated based on the corresponding second broadband precoding matrix, so the terminal device may report the second subband PMI, ie, i2, according to the existing protocol.
针对上述示例(即，终端设备通过测量4个CSI-RS获取4个RI，分别为4，4，2，1)，下面以8port CSI-RS，N1＝2，N2＝2，O1＝4，O2＝4，codebook-type＝1的配置方式为例，对现有技术的上报开销进行说明。其中，在Rank＝4时，终端设备的宽带上报信息可以包括：i1,1、i1,2、i1,3和i2，对应的比特数分别为3bit、3bit、2bit和1bit，共计9比特；在Rank＝3时，终端设备的宽带上报信息可以包括：i1,1、i1,2、i1,3和i2，对应的比特数分别为3bit、3bit、2bit和1bit，共计9比特；在Rank＝2时，终端设备的宽带上报信息可以包括：i1,1、i1,2、i1,3和i2，对应的比特数分别为3bit、3bit、2bit和1bit，共计9比特；在Rank＝1时，终端设备的宽带上报信息可以包括：i1,1、i1,2、i1,3和i2，对应的比特数分别为3bit、3bit、0bit和2bit，共计8比特。那么，现有技术中的终端设备上报2个完整宽带PMI(对应的两个第二RI分别是RI＝2和RI＝1)的开销为9+8＝17bit。由此可见，方式一提供的技术方案(共4比特)能够降低上报开销，进而可以提升设备之间的传输性能。For the above example (i.e., the terminal device obtains 4 RIs by measuring 4 CSI-RS, which are 4, 4, 2, and 1 respectively), the following takes the configuration of 8port CSI-RS, N1=2, N2=2, O1=4, O2=4, and codebook-type=1 as an example to illustrate the reporting overhead of the prior art. Among them, when Rank=4, the broadband reporting information of the terminal device may include: i1,1, i1,2, i1,3 and i2, and the corresponding number of bits are 3bit, 3bit, 2bit and 1bit respectively, totaling 9 bits; when Rank=3, the broadband reporting information of the terminal device may include: i1,1, i1,2, i1,3 and i2, and the corresponding number of bits are 3bit, 3bit, 2bit and 1bit respectively, totaling 9 bits; when Rank=2, the broadband reporting information of the terminal device may include: i1,1, i1,2, i1,3 and i2, and the corresponding number of bits are 3bit, 3bit, 2bit and 1bit respectively, totaling 9 bits; when Rank=1, the broadband reporting information of the terminal device may include: i1,1, i1,2, i1,3 and i2, and the corresponding number of bits are 3bit, 3bit, 0bit and 2bit respectively, totaling 8 bits. Then, the overhead of the terminal device in the prior art reporting two complete broadband PMIs (the corresponding two second RIs are RI=2 and RI=1) is 9+8=17 bits. It can be seen that the technical solution provided by method 1 (4 bits in total) can reduce the reporting overhead, thereby improving the transmission performance between devices.
表示，m小于或等于n，A(n，m)＝n(n-1)(n-2)……(n-m+1)＝n！/(n-m)！。例如，第一宽带PMI包括4个列向量，从中选择2个列向量，共有A(4，2)＝12种可能，可以对应0～11的排列值索引。 It means that m is less than or equal to n, and A(n,m)=n(n-1)(n-2)...(n-m+1)=n!/(nm)!. For example, the first broadband PMI includes 4 column vectors, and 2 column vectors are selected from them. There are A(4,2)=12 possibilities, which can correspond to the permutation value indexes of 0 to 11.
在一种示例中，第一指示信息包括第一PMI的第一宽带PMI对应的第一宽带预编码矩阵的全部排序以及L个第一子带PMI对应的L个第一子带预编码矩阵的全部排序；或者，第一指示信息包括第一PMI的第一宽带PMI对应的第一宽带预编码矩阵的全部排序以及L个第一子带PMI对应的L个第一子带预编码矩阵。In one example, the first indication information includes all orderings of first broadband precoding matrices corresponding to the first broadband PMI of the first PMI and all orderings of L first subband precoding matrices corresponding to L first subband PMIs; or, the first indication information includes all orderings of first broadband precoding matrices corresponding to the first broadband PMI of the first PMI and all orderings of L first subband precoding matrices corresponding to L first subband PMIs.
可选地，第二子带PMI可以基于对应的第二宽带预编码矩阵测量或计算得到，因此终端设备可以按照现有协议上报第二子带PMI，即i2。Optionally, the second subband PMI may be measured or calculated based on the corresponding second broadband precoding matrix, so the terminal device may report the second subband PMI, ie, i2, according to the existing protocol.
其中，第一宽带PMI对应的第一宽带预编码矩阵的全部排序为第一宽带预编码矩阵中所有列向量的信道质量的排序，或者是第一宽带预编码矩阵中每一列向量的CQI强度的排序。第一子带PMI对应的第一子带预编码矩阵的全部排序为第一子带预编码矩阵中所有列向量的信道质量的排序，或者是第一子带预编码矩阵中每一列向量的CQI强度的排序。The entire ranking of the first wideband precoding matrix corresponding to the first wideband PMI is the ranking of the channel quality of all column vectors in the first wideband precoding matrix, or the ranking of the CQI strength of each column vector in the first wideband precoding matrix. The entire ranking of the first subband precoding matrix corresponding to the first subband PMI is the ranking of the channel quality of all column vectors in the first subband precoding matrix, or the ranking of the CQI strength of each column vector in the first subband precoding matrix.
可选地，第一宽带预编码矩阵的全部排序与每个第一子带预编码矩阵的全部排序通过比特表示，即排序信息的比特数为第一RI的阶乘取以2为底的对数，再做上取整。Optionally, the entire order of the first broadband precoding matrix and the entire order of each first subband precoding matrix are The bit representation is that the number of bits of the sorting information is the logarithm with base 2 of the factorial of the first RI, and then rounded up.
示例性的，假设第一PMI的第一宽带PMI对应的第一宽带预编码矩阵满足：
Exemplarily, it is assumed that the first wideband precoding matrix corresponding to the first wideband PMI of the first PMI satisfies:
网络设备向终端设备发送了4个CSI-RS，终端设备通过测量CSI-RS获取4个RI，分别为4，4，3，1，则终端设备可以确定N个RI包括一个第一RI(即RI＝4)，两个第二RI(即RI＝3和RI＝1)，一个第三RI(即RI＝4)，即第一指示信息指示2(即K＝2)个第二预编码矩阵。其中，第一CSI-RS对应的第一PMI的第一宽带PMI对应的第一宽带预编码矩阵有4列，从左至右分别为第1，2，3和4列，则第一宽带预编码矩阵中所有列向量的信道质量的排序共有A(4，4)＝4！＝24种可能的排序，需要至少5比特进行量化。如表5所示，假设第一指示信息中与列向量对应的传输比特以及第一宽带预编码矩阵的列向量(或者说，第一宽带预编码矩阵的排序索引)之间的关联关系满足：The network device sends 4 CSI-RS to the terminal device. The terminal device obtains 4 RIs by measuring CSI-RS, which are 4, 4, 3, and 1. Then the terminal device can determine that the N RIs include a first RI (i.e., RI=4), two second RIs (i.e., RI=3 and RI=1), and a third RI (i.e., RI=4). That is, the first indication information indicates 2 (i.e., K=2) second precoding matrices. Among them, the first broadband precoding matrix corresponding to the first broadband PMI of the first CSI-RS has 4 columns, which are the 1st, 2nd, 3rd, and 4th columns from left to right. Then the first There are A(4, 4) = 4! = 24 possible sortings of the channel quality of all column vectors in the broadband precoding matrix, which require at least 5 bits for quantization. As shown in Table 5, it is assumed that the association relationship between the transmission bit corresponding to the column vector in the first indication information and the column vector of the first broadband precoding matrix (or the sorting index of the first broadband precoding matrix) satisfies:
表5
table 5
例如，第一宽带预编码矩阵中信道质量(或者CQI强度)由高到低排序为第1，2，4，3列，则第一指示信息为00001可以指示RI＝3和RI＝1对应的第二宽带预编码矩阵。对应的，网络设备在接收到第一PMI和第一指示信息后，基于上述表5可以确定有两个RI小于第一RI。进一步地，网络设备可以从第一宽带预编码矩阵的列向量中获取第1、2和4列，合并生成第二RI(RI＝3)对应的第二宽带预编码矩阵；以及，从第一宽带预编码矩阵的列向量中获取第1列，生成第二RI(RI＝1)对应的第二宽带预编码矩阵。For example, the channel quality (or CQI strength) in the first broadband precoding matrix is sorted from high to low as the 1st, 2nd, 4th, and 3rd columns, and the first indication information of 00001 can indicate the second broadband precoding matrix corresponding to RI=3 and RI=1. Correspondingly, after receiving the first PMI and the first indication information, the network device can determine that there are two RIs less than the first RI based on the above Table 5. Further, the network device can obtain the 1st, 2nd, and 4th columns from the column vector of the first broadband precoding matrix, and merge them to generate the second broadband precoding matrix corresponding to the second RI (RI=3); and obtain the 1st column from the column vector of the first broadband precoding matrix to generate the second broadband precoding matrix corresponding to the second RI (RI=1).
又例如，第一宽带预编码矩阵中信道质量(或者CQI强度)由高到低排序为第2，4，3，1列，则第一指示信息为01011可以指示RI＝3和RI＝1对应的第二宽带预编码矩阵。对应的，网络设备在接收到第一PMI和第一指示信息后，基于上述表5可以确定有两个RI小于第一RI。进一步地，网络设备可以从第一宽带预编码矩阵的列向量中获取第2、3和4列，合并生成第二RI(RI＝3)对应的第二宽带预编码矩阵；以及，从第一宽带预编码矩阵的列向量中获取第2列，生成第二RI(RI＝1)对应的第二宽带预编码矩阵。For another example, the channel quality (or CQI strength) in the first broadband precoding matrix is sorted from high to low as the 2nd, 4th, 3rd, and 1st columns, then the first indication information of 01011 can indicate the second broadband precoding matrix corresponding to RI=3 and RI=1. Correspondingly, after receiving the first PMI and the first indication information, the network device can determine that there are two RIs less than the first RI based on the above Table 5. Further, the network device can obtain the 2nd, 3rd, and 4th columns from the column vector of the first broadband precoding matrix, and merge them to generate the second broadband precoding matrix corresponding to the second RI (RI=3); and obtain the 2nd column from the column vector of the first broadband precoding matrix to generate the second broadband precoding matrix corresponding to the second RI (RI=1).
针对上述示例(即，终端设备通过测量4个CSI-RS获取4个RI，分别为4，4，3，1)，以8port CSI-RS，N1＝2，N2＝2，O1＝4，O2＝4，codebook-type＝1的配置方式为例，现有技术中上报2个宽带PMI(对应的两个第二RI分别是RI＝3和RI＝1)的开销是9+8＝17bit，具体实现方式可参见上述方式一的相关描述，上述方式二的第一种示例提供的技术方案(共5比特)可以减少上报比特数，压缩上报开销，进而可以提升设备之间的传输性能。For the above example (i.e., the terminal device obtains 4 RIs by measuring 4 CSI-RSs, which are 4, 4, 3, and 1 respectively), taking the configuration of 8port CSI-RS, N1=2, N2=2, O1=4, O2=4, and codebook-type=1 as an example, the overhead of reporting 2 broadband PMIs (the corresponding two second RIs are RI=3 and RI=1 respectively) in the prior art is 9+8=17 bits. For the specific implementation method, please refer to the relevant description of the above method one. The technical solution provided by the first example of the above method two (5 bits in total) can reduce the number of reporting bits, compress the reporting overhead, and thus improve the transmission performance between devices.
在另一种示例中，第一指示信息包括第一PMI的第一宽带PMI对应的第一宽带预编码矩阵的排列索引以及第一子带PMI对应的L个第一子带预编码矩阵；或者，第一指示信息包括第一PMI的第一宽带PMI对应的第一宽带预编码矩阵的排列索引，以及第一子带PMI对应的L个第一子带预编码矩阵的排列索引。In another example, the first indication information includes the permutation index of the first broadband precoding matrix corresponding to the first broadband PMI of the first PMI and the L first subband precoding matrices corresponding to the first subband PMI; or, the first indication information includes the permutation index of the first broadband precoding matrix corresponding to the first broadband PMI of the first PMI and the permutation index of the L first subband precoding matrices corresponding to the first subband PMI.
可选地，第二子带PMI可以基于对应的第二宽带预编码矩阵测量或计算得到，因此终端设备可以按照现有协议上报第二子带PMI，即i2。Optionally, the second subband PMI may be measured or calculated based on the corresponding second broadband precoding matrix, so the terminal device may report the second subband PMI, ie, i2, according to the existing protocol.
其中，第一宽带PMI对应的第一宽带预编码矩阵的排序索引为第一宽带预编码矩阵中信道质量最好的X个列向量对应的排列值索引，或者是第一宽带预编码矩阵中CQI强度最强的X个列向量对应的排列值索引。第一子带PMI对应的第一子带预编码矩阵的排序索引为第一子带预编码矩阵中信道质量最好的X个列向量对应的排列值索引，或者是第一子带预编码矩阵中CQI强度最强的X个列向量对应的排列值索引。The sorting index of the first wideband precoding matrix corresponding to the first wideband PMI is the permutation value index corresponding to the X column vectors with the best channel quality in the first wideband precoding matrix, or the permutation value index corresponding to the X column vectors with the strongest CQI strength in the first wideband precoding matrix. The sorting index of the first subband precoding matrix corresponding to the first subband PMI is the permutation value index corresponding to the X column vectors with the best channel quality in the first subband precoding matrix, or the permutation value index corresponding to the X column vectors with the strongest CQI strength in the first subband precoding matrix.
可选地，第一宽带预编码矩阵的排序索引与每个第一子带预编码矩阵的排序索引通过比特表示，即排列索引为A(第一RI，M)的排列值取以2为底的对数，再做上取整。Optionally, the sorting index of the first broadband precoding matrix and the sorting index of each first subband precoding matrix are The bit representation is that the permutation value of the permutation index A (first RI, M) is taken as the logarithm with base 2 and then rounded up.
示例性的，假设第一PMI的第一宽带PMI对应的第一宽带预编码矩阵满足：
Exemplarily, it is assumed that the first wideband precoding matrix corresponding to the first wideband PMI of the first PMI satisfies:
网络设备向终端设备发送了4个CSI-RS，终端设备通过测量CSI-RS获取4个RI，分别为4，4，2，1，则终端设备可以确定N个RI包括一个第一RI(即RI＝4)，两个第二RI(即RI＝2和RI＝1)，一个第三RI(即RI＝4)，即第一指示信息指示2(即K＝2)个第二预编码矩阵。其中，第一CSI-RS对应的第一PMI的第一宽带PMI对应的第一宽带预编码矩阵有4列，从左至右分别为第1，2，3和4列，则第一宽带预编码矩阵中信道质量最好的前2列向量对应的排序共有A(4，2)＝12种可能的排序，需要至少4比特进行量化。如表6所示，假设第一指示信息中与列向量对应的传输比特以及第一宽带预编码矩阵的列向量(或者说，第一宽带预编码矩阵的排序索引)之间的关联关系满足：The network device sends 4 CSI-RS to the terminal device. The terminal device obtains 4 RIs by measuring the CSI-RS, which are 4, 4, 2, and 1 respectively. Then the terminal device can determine that the N RIs include a first RI (i.e., RI=4), two second RIs (i.e., RI=2 and RI=1), and a third RI (i.e., RI=4), that is, the first indication information indicates 2 (i.e., K=2) second precoding matrices. Among them, the first broadband precoding matrix corresponding to the first broadband PMI of the first PMI corresponding to the first CSI-RS has 4 columns, which are the 1st, 2nd, 3rd, and 4th columns from left to right. There are A(4, 2)=12 possible sortings corresponding to the first 2 column vectors with the best channel quality in the first broadband precoding matrix, which require at least 4 bits for quantization. As shown in Table 6, it is assumed that the correlation between the transmission bits corresponding to the column vectors in the first indication information and the column vectors of the first broadband precoding matrix (or the sorting index of the first broadband precoding matrix) satisfies:
表6
Table 6
例如，第一宽带预编码矩阵中信道质量(或者CQI强度)由高到低排序为第1，2，4，3列，则第一指示信息为0000可以指示RI＝2和RI＝1对应的第二宽带预编码矩阵。对应的，网络设备在接收到第一PMI和第一指示信息后，基于上述表6可以确定有两个RI小于第一RI。进一步地，网络设备可以从第一宽带预编码矩阵的列向量中获取第1和2列，合并生成第二RI(RI＝2)对应的第二宽带预编码矩阵；以及，从第一宽带预编码矩阵的列向量中获取第1列，生成第二RI(RI＝1)对应的第二宽带预编码矩阵。For example, the channel quality (or CQI strength) in the first broadband precoding matrix is sorted from high to low as the 1st, 2nd, 4th, and 3rd columns, and the first indication information of 0000 can indicate the second broadband precoding matrix corresponding to RI=2 and RI=1. Correspondingly, after receiving the first PMI and the first indication information, the network device can determine that there are two RIs less than the first RI based on the above Table 6. Further, the network device can obtain the 1st and 2nd columns from the column vector of the first broadband precoding matrix, and combine them to generate the second broadband precoding matrix corresponding to the second RI (RI=2); and obtain the 1st column from the column vector of the first broadband precoding matrix to generate the second broadband precoding matrix corresponding to the second RI (RI=1).
又例如，第一宽带预编码矩阵中信道质量(或者CQI强度)由高到低排序为第2，3，4，1列，则第一指示信息为0100可以指示RI＝2和RI＝1对应的第二宽带预编码矩阵。对应的，网络设备在接收到第一PMI和第一指示信息后，基于上述表6可以确定有两个RI小于第一RI。进一步地，网络设备可以从第一宽带预编码矩阵的列向量中获取第2和3列，合并生成第二RI(RI＝2)对应的第二宽带预编码矩阵；以及，从第一宽带预编码矩阵的列向量中获取第2列，生成第二RI(RI＝1)对应的第二宽带预编码矩阵。For another example, the channel quality (or CQI strength) in the first broadband precoding matrix is sorted from high to low as the 2nd, 3rd, 4th, and 1st columns, then the first indication information of 0100 can indicate the second broadband precoding matrix corresponding to RI=2 and RI=1. Correspondingly, after receiving the first PMI and the first indication information, the network device can determine that there are two RIs less than the first RI based on the above Table 6. Further, the network device can obtain the 2nd and 3rd columns from the column vector of the first broadband precoding matrix, and merge them to generate the second broadband precoding matrix corresponding to the second RI (RI=2); and obtain the 2nd column from the column vector of the first broadband precoding matrix to generate the second broadband precoding matrix corresponding to the second RI (RI=1).
针对上述示例(即，终端设备通过测量4个CSI-RS获取4个RI，分别为4，4，2，1)，以8port CSI-RS，N1＝2，N2＝2，O1＝4，O2＝4，codebook-type＝1的配置方式为例，现有技术中上报2个宽带PMI(对应的两个第二RI分别是RI＝2和RI＝1)的开销是9+8＝17bit，具体实现方式可参见上述方式一的相关描述，上述方式二的第二种示例提供的技术方案(共4比特)可以减少上报比特数，压缩上报开销，进而可以提升设备之间的传输性能。For the above example (i.e., the terminal device obtains 4 RIs by measuring 4 CSI-RSs, which are 4, 4, 2, and 1 respectively), taking the configuration of 8port CSI-RS, N1=2, N2=2, O1=4, O2=4, and codebook-type=1 as an example, the overhead of reporting 2 broadband PMIs (the corresponding two second RIs are RI=2 and RI=1 respectively) in the prior art is 9+8=17 bits. For the specific implementation method, please refer to the relevant description of the above method one. The technical solution provided by the second example of the above method two (4 bits in total) can reduce the number of reporting bits, compress the reporting overhead, and thus improve the transmission performance between devices.
一种可选的方式中，每一个第二预编码矩阵中各元素的模平方和为1。若第二预编码矩阵中各元素的模平方和不满足为1，则通过上述方法获得第二预编码矩阵后，第二预编码矩阵后的每个元素需要乘一个系数，该系数为其中a为第一RI，b为第二RI。In an optional manner, the sum of the squares of the modules of each element in each second precoding matrix is 1. If the sum of the squares of the modules of each element in the second precoding matrix does not satisfy 1, after the second precoding matrix is obtained by the above method, each element after the second precoding matrix needs to be multiplied by a coefficient, which is Where a is the first RI and b is the second RI.
一种可选的方式中，每个第二预编码矩阵可以包括一个第二宽带预编码矩阵，或者每个第二预编码矩阵可以包括一个第二宽带预编码矩阵和L个第二子带预编码矩阵。In an optional manner, each second precoding matrix may include a second wideband precoding matrix, or each second precoding matrix may include a second wideband precoding matrix and L second subband precoding matrices.
应理解，以上表4至表6仅是为便于理解给出的示例，不用构成对本申请技术方案的任何限定。It should be understood that the above Tables 4 to 6 are merely examples given for ease of understanding and do not constitute any limitation on the technical solution of the present application.
S240，终端设备向网络设备发送第一上报信息；S240, the terminal device sends first reporting information to the network device;
对应的，网络设备接收来自终端设备的第一上报信息。Correspondingly, the network device receives the first reporting information from the terminal device.
具体的，第一上报信息包括第一PMI，N个RI和第一指示信息。Specifically, the first reporting information includes the first PMI, N RIs and first indication information.
示例性的，第一CSI包括N个RI，N为正整数。其中，N个RI对应N个CSI，或者说，N个RI中每个RI都对应一个CSI测量。每个CSI中包括一个RI。终端设备可以通过N个CSI生成第一上报信息，并发送给网络设备。第一PMI、N个RI和第一指示信息。Exemplarily, the first CSI includes N RIs, where N is a positive integer. The N RIs correspond to N CSIs, or in other words, each of the N RIs corresponds to a CSI measurement. Each CSI includes an RI. The terminal device can generate first reporting information through the N CSIs and send it to the network device. The first PMI, N RIs and the first indication information.
在一种示例中，M等于1，则终端设备可以通过一个CSI report上报第一上报信息，包括一个第一PMI、N个RI和第一指示信息。可选地，该一个CSI report还可以包括N个CQI。In one example, M is equal to 1, and the terminal device can report the first reporting information through a CSI report, including a first PMI, N RIs and first indication information. Optionally, the one CSI report can also include N CQIs.
在另一种示例中，M大于1，例如M＝2，N＝2，第一RI等于4，第二RI等于3。则终端设备可以通过2个CSI report上报第一上报信息，包括一个第一PMI、2个RI和第一指示信息。可选地，该2个CSI report还可以分别包括2个CQI。例如，第一个CSI report包括第一PMI、第一RI和第一CQI，第2个CSI report包括第二RI和第二CQI。可选地，第一指示信息可以通过第一个CSI report上报，也可以通过第2个CSI report上报，本申请对此不作限定。其中，第一指示信息指示第二RI对应的1个第二预编码矩阵。In another example, M is greater than 1, for example, M=2, N=2, the first RI is equal to 4, and the second RI is equal to 3. Then the terminal device can report the first reporting information through 2 CSI reports, including a first PMI, 2 RIs and the first indication information. Optionally, the 2 CSI reports can also include 2 CQIs respectively. For example, the first CSI report includes the first PMI, the first RI and the first CQI, and the second CSI report includes the second RI and the second CQI. Optionally, the first indication information can be reported through the first CSI report or through the second CSI report, and this application does not limit this. Among them, the first indication information indicates a second precoding matrix corresponding to the second RI.
在又一种示例中，M大于1，例如M＝2，N＝3，第一RI等于4，两个第二RI分别等于3和等于2，则终端设备可以通过2个CSI report上报第一上报信息，包括一个第一PMI、3个RI和第一指示信息。可选地，该2个CSI report还可以包括3个CQI。例如，第一个CSI report包括第一PMI、第一RI和第一CQI，第2个CSI report包括第二RI、第三RI、第二CQI和第三CQI。In another example, M is greater than 1, for example, M=2, N=3, the first RI is equal to 4, and the two second RIs are respectively equal to 3 and equal to 2, then the terminal device can report the first reporting information through 2 CSI reports, including a first PMI, 3 RIs and the first indication information. Optionally, the 2 CSI reports can also include 3 CQIs. For example, the first CSI report includes the first PMI, the first RI and the first CQI, and the second CSI report includes the second RI, the third RI, the second CQI and the third CQI.
可选地，第一指示信息可以通过第一个CSI report上报，也可以通过第2个CSI report上报，本申请对此不作限定。其中，第一指示信息指示两个第二RI分别对应的2个第二预编码矩阵。可选地，如果其中一个第二RI也等于4，则第一指示信息指示一个第二RI对应的1个第二预编码矩阵。Optionally, the first indication information may be reported through the first CSI report or the second CSI report, which is not limited in this application. The first indication information indicates two second precoding matrices corresponding to two second RIs, respectively. Optionally, if one of the second RIs is also equal to 4, the first indication information indicates one second precoding matrix corresponding to one second RI.
示例性的，该第一上报信息可以承载在物理上行资源上传输给网络设备，该物理上行资源例如可以是PUCCH资源或者PUSCH资源。Exemplarily, the first reporting information may be carried on a physical uplink resource and transmitted to the network device. The physical uplink resource may be, for example, a PUCCH resource or a PUSCH resource.
可选地，第一上报信息可以联合在一个PUCCH或者PUSCH上报；或者，第一上报信息也可以在多个PUCCH或者PUSCH中，比如按照上报规则进行上报。该上报规则可以是预定义的，例如网络设备为终端设备预配置的，或者网络设备向终端设备发送的指示，本申请对此不作具体限定。Optionally, the first reporting information may be reported jointly in one PUCCH or PUSCH; or, the first reporting information may also be reported in multiple PUCCHs or PUSCHs, for example, according to a reporting rule. The reporting rule may be predefined, such as a preconfiguration of the network device for the terminal device, or an indication sent by the network device to the terminal device, which is not specifically limited in this application.
可选地，终端设备还可以根据M个CSI-RS确定CPU的个数，并向网络设备上报CPU的个数T。Optionally, the terminal device may also determine the number of CPUs according to the M CSI-RSs, and report the number T of CPUs to the network device.
其中，T为预定义的值，如T＝1；或者，T小于M；或者，T为终端设备主动上报的。Wherein, T is a predefined value, such as T=1; or, T is less than M; or, T is actively reported by the terminal device.
应理解，终端设备是根据网络设备的CSI报告配置决定上报哪些内容。其中，CSI报告配置主要规定了与CSI报告相关联的CSI资源配置，CSI报告在频域上的配置(包括CSI报告频带以及PMI/CQI上报是宽带还是子带)，CSI报告在时域上的行为(包括周期、半持续、非周期)以及终端设备上报的CSI相关指示量(包括CQI、PMI、CRI、SSBRI、LI、RI、L1-RSRP、L1-SINR)。例如，网络设备配置终端设备上报‘cri-CQI-PMI’，则终端设备需要对应上报一个NZP CSI-RS资源的索引，该NZP CSI-RS资源的CQI、该NZP CSI-RS资源的PMI。It should be understood that the terminal device decides what to report based on the CSI report configuration of the network device. Among them, the CSI report configuration mainly specifies the CSI resource configuration associated with the CSI report, the configuration of the CSI report in the frequency domain (including the CSI report band and whether the PMI/CQI report is wideband or subband), the behavior of the CSI report in the time domain (including periodic, semi-continuous, and non-periodic), and the CSI-related indicators reported by the terminal device (including CQI, PMI, CRI, SSBRI, LI, RI, L1-RSRP, L1-SINR). For example, if the network device configures the terminal device to report ‘cri-CQI-PMI’, the terminal device needs to report the index of an NZP CSI-RS resource, the CQI of the NZP CSI-RS resource, and the PMI of the NZP CSI-RS resource.
S250，网络设备根据第一上报信息确定K个第二预编码矩阵。S250: The network device determines K second precoding matrices according to the first reporting information.
具体的，第一上报信息包括第一PMI，N个RI和第一指示信息。其中，N个RI包括一个第一RI和K个第二RI。Specifically, the first reporting information includes a first PMI, N RIs and first indication information, wherein the N RIs include a first RI and K second RIs.
在一种示例中，网络设备根据第一PMI、第一指示信息和K个第二RI，确定K个第二预编码矩阵。In one example, the network device determines K second precoding matrices according to the first PMI, the first indication information and K second RIs.
需要说明的是，如果N个RI中除了第一RI外，还有一个或者多个第三RI也等于4，则第一上报信息中的第一指示信息不用指示第三RI对应的第二预编码矩阵，对应的，网络设备可以根据第三RI等于第一RI，确定第三RI对应的第二预编码矩阵等于第一预编码矩阵。It should be noted that if in addition to the first RI, there is one or more third RIs among the N RIs that are also equal to 4, then the first indication information in the first reporting information does not need to indicate the second precoding matrix corresponding to the third RI. Correspondingly, the network device can determine that the second precoding matrix corresponding to the third RI is equal to the first precoding matrix based on the third RI being equal to the first RI.
本申请提供的方案，终端设备根据接收到的M个CSI-RS可以确定第一CSI，特别是在发射功率回退场景中，终端设备可以通过上报一个第一PMI和一个第一指示信息，使得网络设备确定K个第二预编码矩阵，压缩了上报开销，进而提升传输性能。The solution provided in the present application is that the terminal device can determine the first CSI based on the M CSI-RS received. Especially in the transmission power fallback scenario, the terminal device can report a first PMI and a first indication information to enable the network device to determine K second precoding matrices, thereby compressing the reporting overhead and improving the transmission performance.
上文结合图1和图2，详细描述了本申请的通信方法侧实施例，下面将结合图3和图4，详细描述本申请的通信装置侧实施例。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的部分可以参见前面方法实施例。The above describes in detail the communication method side embodiment of the present application in conjunction with Figures 1 and 2, and the following describes in detail the communication device side embodiment of the present application in conjunction with Figures 3 and 4. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, and therefore, the part not described in detail can refer to the previous method embodiment.
图3是本申请实施例提供的一种通信装置1000的示意性框图。如图3所示，该设备1000可以包括收发单元1010和处理单元1020。收发单元1010可以与外部进行通信，处理单元1020用于进行数据处理。收发单元1010还可以称为通信接口或收发单元。FIG3 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. As shown in FIG3, the device 1000 may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 may communicate with the outside, and the processing unit 1020 is used for data processing. The transceiver unit 1010 may also be referred to as a communication interface or a transceiver unit.
在一种可能的设计中，该设备1000可实现对应于上文方法实施例中的终端设备执行的步骤或者流程，其中，处理单元1020用于执行上文方法实施例中终端设备的处理相关的操作，收发单元1010用于执行上文方法实施例中终端设备的收发相关的操作。In one possible design, the device 1000 can implement steps or processes corresponding to those executed by the terminal device in the above method embodiment, wherein the processing unit 1020 is used to execute processing-related operations of the terminal device in the above method embodiment, and the transceiver unit 1010 is used to execute transceiver-related operations of the terminal device in the above method embodiment.
示例性的，收发单元1010，用于接收M个信道状态信息参考信号CSI-RS，M为正整数；处理单元1020，用于根据M个CSI-RS确定第一CSI，第一CSI包括N个秩指示RI，N为正整数；处理单元1020，还用于根据第一CSI生成第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一PMI指示第一预编码矩阵，第一指示信息用于从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应K个第二RI，K个第二RI均小于第一RI，第一RI与第一PMI对应，第一RI和K个第二RI属于N个RI，K为正整数；收发单元1010，还用于发送第一上报信息。Exemplarily, the transceiver unit 1010 is configured to receive M channel state information reference signals CSI-RS, where M is a positive integer; the processing unit 1020, used to determine the first CSI according to M CSI-RS, the first CSI includes N rank indication RIs, N is a positive integer; the processing unit 1020, is also used to generate first reporting information according to the first CSI, the first reporting information includes a first PMI, N RIs and first indication information, wherein the first PMI indicates a first precoding matrix, the first indication information is used to indicate K second precoding matrices from the first precoding matrix, the K second precoding matrices correspond to K second RIs respectively, the K second RIs are all smaller than the first RI, the first RI corresponds to the first PMI, the first RI and the K second RIs belong to N RIs, K is a positive integer; the transceiver unit 1010, is also used to send the first reporting information.
在另一种可能的设计中，该设备1000可实现对应于上文方法实施例中的网络设备执行的步骤或者流程，其中，收发单元1010用于执行上文方法实施例中网络设备的收发相关的操作，处理单元1020用于执行上文方法实施例中网络设备的处理相关的操作。In another possible design, the device 1000 may implement steps or processes corresponding to those executed by the network device in the above method embodiment, wherein the transceiver unit 1010 is used to execute transceiver-related operations of the network device in the above method embodiment, and the processing unit 1020 is used to execute processing-related operations of the network device in the above method embodiment.
示例性的，收发单元1010，用于发送M个CSI-RS，M为正整数；收发单元1010，还用于接收第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一指示信息指示第一预编码矩阵，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应的K个第二RI，K个第二RI均小于第一RI，第一RI和K个第二RI属于N个RI，第一RI与第一PMI对应，K和N为正整数；处理单元1020，用于根据第一上报信息确定K个第二预编码矩阵。Exemplarily, the transceiver unit 1010 is used to send M CSI-RS, where M is a positive integer; the transceiver unit 1010 is also used to receive first reporting information, the first reporting information includes a first PMI, N RIs and first indication information, wherein the first indication information indicates a first precoding matrix, the first indication information indicates K second precoding matrices from the first precoding matrix, the K second precoding matrices respectively correspond to K second RIs, the K second RIs are all smaller than the first RI, the first RI and the K second RIs belong to N RIs, the first RI corresponds to the first PMI, and K and N are positive integers; the processing unit 1020 is used to determine K second precoding matrices according to the first reporting information.
应理解，这里的设备1000以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，设备1000可以具体为上述实施例中的发送端，可以用于执行上述方法实施例中与发送端对应的各个流程和/或步骤，或者，设备1000可以具体为上述实施例中的接收端，可以用于执行上述方法实施例中与接收端对应的各个流程和/或步骤，为避免重复，在此不再赘述。It should be understood that the device 1000 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and/or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 1000 can be specifically the transmitting end in the above-mentioned embodiment, and can be used to execute the various processes and/or steps corresponding to the transmitting end in the above-mentioned method embodiment, or the device 1000 can be specifically the receiving end in the above-mentioned embodiment, and can be used to execute the various processes and/or steps corresponding to the receiving end in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.
上述各个方案的设备1000具有实现上述方法中发送端所执行的相应步骤的功能，或者，上述各个方案的设备1000具有实现上述方法中接收端所执行的相应步骤的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如收发单元可以由收发机替代(例如，收发单元中的发送单元可以由发送机替代，收发单元中的接收单元可以由接收机替代)，其它单元，如处理单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。The device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the sending end in the above-mentioned method, or the device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the receiving end in the above-mentioned method. The functions can be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, respectively performing the transceiver operations and related processing operations in each method embodiment.
此外，上述收发单元还可以是收发电路(例如可以包括接收电路和发送电路)，处理单元可以是处理电路。在本申请的实施例，图3中的装置可以是前述实施例中的接收端或发送端，也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。其中，收发单元可以是输入输出电路、通信接口。处理单元为该芯片上集成的处理器或者微处理器或者集成电路。在此不做限定。In addition, the above-mentioned transceiver unit can also be a transceiver circuit (for example, it can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit. In an embodiment of the present application, the device in Figure 3 can be the receiving end or the transmitting end in the aforementioned embodiment, or it can be a chip or a chip system, for example: a system on chip (system on chip, SoC). Among them, the transceiver unit can be an input and output circuit, a communication interface. The processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.
图4是本申请实施例提供的另一种通信装置2000的示意性框图。如图4所示，该设备2000包括处理器2010和接口电路2020。其中，处理器2010和接口电路2020通过内部连接通路互相通信，该处理器2010用于执行指令，以控制该接口电路2020发送信号和/或接收信号。FIG4 is a schematic block diagram of another communication device 2000 provided in an embodiment of the present application. As shown in FIG4, the device 2000 includes a processor 2010 and an interface circuit 2020. The processor 2010 and the interface circuit 2020 communicate with each other through an internal connection path, and the processor 2010 is used to execute instructions to control the interface circuit 2020 to send and/or receive signals.
可选地，该设备2000还可以包括存储器2030，该存储器2030与处理器2010、接口电路2020通过内部连接通路互相通信。该存储器2030用于存储指令，该处理器2010可以执行该存储器2030中存储的指令。Optionally, the device 2000 may further include a memory 2030, which communicates with the processor 2010 and the interface circuit 2020 via an internal connection path. The memory 2030 is used to store instructions, and the processor 2010 may execute the instructions stored in the memory 2030.
在一种可能的实现方式中，设备2000用于实现上述方法实施例中的终端设备对应的各个流程和步骤。In a possible implementation, the device 2000 is used to implement various processes and steps corresponding to the terminal device in the above method embodiment.
示例性的，接口电路2020，用于接收M个信道状态信息参考信号CSI-RS，M为正整数；处理器2010，用于根据M个CSI-RS确定第一CSI，第一CSI包括N个秩指示RI，N为正整数；处理器2010，还用于根据第一CSI生成第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一PMI指示第一预编码矩阵，第一指示信息用于从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应K个第二RI，K个第二RI均小于第一RI，第一RI与第一PMI对应，第一RI和K个第二RI属于N个RI，K为正整数；接口电路2020，还用于发送第一上报信息。Exemplarily, the interface circuit 2020 is used to receive M channel state information reference signals CSI-RS, where M is a positive integer; the processor 2010 is used to determine the first CSI based on the M CSI-RS, the first CSI includes N rank indications RI, where N is a positive integer; the processor 2010 is also used to generate first reporting information based on the first CSI, the first reporting information includes a first PMI, N RIs and first indication information, wherein the first PMI indicates a first precoding matrix, the first indication information is used to indicate K second precoding matrices from the first precoding matrix, the K second precoding matrices correspond to K second RIs respectively, the K second RIs are all smaller than the first RI, the first RI corresponds to the first PMI, the first RI and the K second RIs belong to N RIs, and K is a positive integer; the interface circuit 2020 is also used to send the first reporting information.
在另一种可能的实现方式中，设备2000用于实现上述方法实施例中的网络设备对应的各个流程和步骤。In another possible implementation, the device 2000 is used to implement various processes and steps corresponding to the network device in the above method embodiment.
示例性的，接口电路2020，用于发送M个CSI-RS，M为正整数；接口电路2020，还用于接收第一上报信息，第一上报信息包括第一PMI、N个RI和第一指示信息，其中，第一指示信息指示第一预编码矩阵，第一指示信息指示从第一预编码矩阵中指示K个第二预编码矩阵，K个第二预编码矩阵分别对应的K个第二RI，K个第二RI均小于第一RI，第一RI和K个第二RI属于N个RI，第一RI与第一PMI对应，K和N为正整数；处理器2010，用于根据第一上报信息确定K个第二预编码矩阵。Exemplarily, the interface circuit 2020 is used to send M CSI-RS, where M is a positive integer; the interface circuit 2020 is also used to receive first reporting information, where the first reporting information includes a first PMI, N RIs, and first indication information, wherein the first indication information indicates a first precoding matrix, and the first indication information indicates K second precoding matrices from the first precoding matrix, and the K second precoding matrices correspond to K second RIs, the K second RIs are all smaller than the first RI, the first RI and the K second RIs belong to N RIs, the first RI corresponds to the first PMI, K and N are positive integers; the processor 2010 is used to determine K second precoding matrices according to the first reporting information.
应理解，设备2000可以具体为上述实施例中的发送端或接收端，也可以是芯片或者芯片系统。对应的，该接口电路2020可以是该芯片的收发电路，在此不做限定。具体地，该设备2000可以用于执行上述方法实施例中与发送端或接收端对应的各个步骤和/或流程。It should be understood that the device 2000 can be specifically the transmitting end or receiving end in the above embodiment, or a chip or a chip system. Correspondingly, the interface circuit 2020 can be a transceiver circuit of the chip, which is not limited here. Specifically, the device 2000 can be used to execute each step and/or process corresponding to the transmitting end or receiving end in the above method embodiment.
可选地，该存储器2030可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器2010可以用于执行存储器中存储的指令，并且当该处理器2010执行存储器中存储的指令时，该处理器2010用于执行上述与发送端或接收端对应的方法实施例的各个步骤和/或流程。Optionally, the memory 2030 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 2010 may be used to execute instructions stored in the memory, and when the processor 2010 executes instructions stored in the memory, the processor 2010 is used to execute the various steps and/or processes of the above-mentioned method embodiment corresponding to the transmitting end or the receiving end.
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。本申请实施例中的处理器可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The processor in the embodiment of the present application can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to execute, or the hardware and software modules in the decoding processor can be combined and executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器、动态随机存取存储器、同步动态随机存取存储器、双倍数据速率同步动态随机存取存储器、增强型同步动态随机存取存储器、同步连接动态随机存取存储器和直接内存总线随机存取存储器。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory, synchronous connection dynamic random access memory, and direct memory bus random access memory. It should be noted that the memory of the system and method described herein is intended to include, but is not limited to, these and any other suitable types of memory.
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述各方法实施例中由设备(例如终端设备或网络设备)执行的方法的计算机指令。An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by a device (eg, a terminal device or a network device) in the above-mentioned method embodiments are stored.
本申请实施例还提供一种计算机程序产品，包含指令，该指令被计算机执行时以实现上述各方法实施例中由设备(例如终端设备或网络设备)执行的方法。An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a device (eg, a terminal device or a network device) in the above-mentioned method embodiments.
本申请实施例还提供一种通信的系统，包括前述的例如终端设备或网络设备中的一个或多个。An embodiment of the present application also provides a communication system, including one or more of the aforementioned terminal devices or network devices.
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only exemplary. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or Some features may be omitted or not performed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, which may be electrical, mechanical or other forms.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
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