技术领域technical field
本发明涉及无线通信技术领域，尤其涉及一种非授权频谱信道占用方法及设备。The invention relates to the technical field of wireless communication, in particular to a method and equipment for occupying an unlicensed spectrum channel.
背景技术Background technique
在基于非授权频谱部署的通信系统中，各节点通过非授权频谱上的接收功率的大小来判断其忙闲状态，如果接收功率小于一定门限，则认为非授权频谱上没有干扰源且处于空闲状态，那么就可以在非授权频谱上发送信号，这种先监听后发送的机制被称作先听后说(英文全称：Listen Before Talk，英文简称：LBT)，能够避免各节点之间在使用非授权频谱资源时的冲突。由于各节点是通过竞争的方式来使用/共享无线资源，所以会导致非授权频谱上的传输起始时刻不固定，且每次传输所占用的频域信道宽度也随着信道空闲评估结果的不同而变化，同时一次传输的最大信道占用时长也受到限制，并且无法向各节点动态的指示每次的信道占用时长。In a communication system based on unlicensed spectrum deployment, each node judges its busy status by the received power on the unlicensed spectrum. If the received power is less than a certain threshold, it is considered that there is no interference source on the unlicensed spectrum and it is in an idle state. , then you can send signals on the unlicensed spectrum. This mechanism of listening first and then sending is called listening before talking (English full name: Listen Before Talk, English abbreviation: LBT), which can avoid the use of non-licensed Conflicts when authorizing spectrum resources. Since each node uses/shares wireless resources through competition, the starting time of transmission on the unlicensed spectrum is not fixed, and the frequency domain channel width occupied by each transmission is also different with the result of channel idle assessment However, the maximum channel occupancy time for one transmission is also limited, and it is impossible to dynamically indicate the channel occupancy time for each node to each node.
目前，在无线保真技术(Wi-Fi)系统中，在每个数据包包头中携带包含传输机会(英文全称：Transmit Opportunity，英文简称：TXOP)的控制信息，该TXOP用于指示本数据包传输所用的带宽、本数据包传输的时长以及本数据包结束之后的剩余TXOP时长。虽然剩余TXOP时长可以动态的更新指示，但无法动态指示剩余信道占用时长内的子帧上下行配置，节点仍然需要持续监听控制信息而不能进入节能模式。At present, in the wireless fidelity (Wi-Fi) system, the control information including the transmission opportunity (English full name: Transmit Opportunity, English abbreviation: TXOP) is carried in the header of each data packet, and the TXOP is used to indicate that the data packet The bandwidth used for transmission, the duration of this data packet transmission, and the remaining TXOP duration after the end of this data packet. Although the remaining TXOP duration can be dynamically updated and indicated, it cannot dynamically indicate the subframe uplink and downlink configuration within the remaining channel occupation duration, and the node still needs to continuously monitor control information and cannot enter the energy-saving mode.
由于每次信道占用的信道占用参数会有所变化，目前采用的TXOP的机制并不能动态、快速的通知给各节点，从而不利于各节点之间的通信，也无法更好的适应变化的信道/业务。Since the channel occupancy parameters of each channel occupation will change, the currently adopted TXOP mechanism cannot dynamically and quickly notify each node, which is not conducive to the communication between nodes, and cannot better adapt to changing channels. /business.
发明内容Contents of the invention
本发明提供了一种非授权频谱信道占用的方法及设备，能够解决现有技术中信道占用参数的通知机制无法适应变化较快的信道或业务的问题。The invention provides a method and equipment for occupying an unlicensed spectrum channel, which can solve the problem that the notification mechanism of channel occupation parameters in the prior art cannot adapt to channels or services that change rapidly.
第一方面提供的非授权频谱信道占用的方法中，网络侧设备获取信道的控制权，然后生成第一控制信息，所述第一控制信息用于指示至少一个COT内的信道占用参数。其中信道占用参数至少可包括以下信息元素之一：In the method for occupying an unlicensed spectrum channel provided in the first aspect, the network side device obtains the control right of the channel, and then generates first control information, where the first control information is used to indicate channel occupation parameters in at least one COT. The channel occupancy parameter may include at least one of the following information elements:
所述至少一个COT中的第一COT、在所述第一COT内传输信号使用的频域参数、所述第一COT内的时域单元结构或第一传输触发信息。A first COT in the at least one COT, a frequency domain parameter used for transmitting a signal in the first COT, a time domain unit structure in the first COT, or first transmission trigger information.
其中，信息元素第一COT是指至少一个COT中的任意COT，若该第一COT是指最后一个COT时，那么所指示的该第一COT内的信道占用参数仅可用于该第一COT内的数据传输；若该第一COT不是指最后一个COT时，所指示的该第一COT内的信道占用参数可以仅用于该第一COT内的数据传输，还可以用于该第一COT后面的几个COT内的数据传输，本发明实施例不对指示第一COT内数据传输的信道占用参数可用于控制的COT数目进行限定。Wherein, the first COT of the information element refers to any COT in at least one COT, and if the first COT refers to the last COT, then the indicated channel occupancy parameters in the first COT can only be used in the first COT data transmission; if the first COT does not refer to the last COT, the indicated channel occupancy parameters in the first COT can be used only for data transmission in the first COT, and can also be used for subsequent data in the first COT For data transmission in several COTs, this embodiment of the present invention does not limit the number of COTs that can be used to control the channel occupancy parameter indicating data transmission in the first COT.
在第一COT内传输信号使用的频域参数主要包括在所述第一COT内传输信号使用的最大信道频域带宽和在第一COT内使用的频域子带参数。通过将频域子带参数指示给终端设备，能够使得终端设备准确、快速的获取频域参数，从而进行上行发送和下行接收，提高上/下行传输效率。The frequency domain parameters used for signal transmission in the first COT mainly include the maximum channel frequency domain bandwidth used for signal transmission in the first COT and the frequency domain subband parameters used in the first COT. By indicating the frequency-domain sub-band parameters to the terminal equipment, the terminal equipment can accurately and quickly acquire the frequency-domain parameters, so as to perform uplink transmission and downlink reception, and improve uplink/downlink transmission efficiency.
第一COT内的时域单元结构是指：第一COT内的时域单元结构的类型，和/或，第一COT内的时域单元结构的长度。通过向终端设备通知第一COT内的时域单元结构，可以使得终端设备仅在下行时域单元时采取监听下行信道，从而可以降低功耗，并且，根据该第一COT内的时域单元结构在上行时域部分进行上行传输，达到优化终端设备的上行发送和下行接收机制的目的。The time-domain unit structure in the first COT refers to: the type of the time-domain unit structure in the first COT, and/or, the length of the time-domain unit structure in the first COT. By notifying the terminal device of the time domain unit structure in the first COT, the terminal device can only monitor the downlink channel when it is in the downlink time domain unit, thereby reducing power consumption, and according to the time domain unit structure in the first COT The uplink transmission is performed in the uplink time domain part, so as to achieve the purpose of optimizing the uplink sending and downlink receiving mechanism of the terminal equipment.
第一传输触发信息是指能够起到触发一次COT传输的触发信息，使得终端设备能够在接收到该第一传输触发信息后的上行时域部分进行上行传输，第一传输触发信息具体可用于：在所述网络侧设备触发的所述第一COT内，所述终端设备使用时长低于第一阈值的LBT竞争信道。该第一传输触发信息可以是一种特定的随机序列，比如同步序列或者前导序列。The first transmission trigger information refers to the trigger information that can trigger a COT transmission, so that the terminal device can perform uplink transmission in the uplink time domain after receiving the first transmission trigger information. The first transmission trigger information can be specifically used for: In the first COT triggered by the network-side device, the terminal device competes for a channel using an LBT whose duration is lower than a first threshold. The first transmission trigger information may be a specific random sequence, such as a synchronization sequence or a preamble sequence.
然后，网络侧设备将生成的第一控制信息发送给至少一个终端设备，以使所述至少一个终端设备能够根据所述第一控制信息，与所述网络侧设备在所述至少一个COT内进行通信。可选的，网络侧设备可以从所述第一COT内的下行传输起始时刻发送所述第一控制信息。此外，上述第一控制信息还可以通过公共控制信令或终端设备专用控制信令或授权信道的下行控制信令发送，能够达到减少终端设备盲目检测第一控制信息的目的。Then, the network-side device sends the generated first control information to at least one terminal device, so that the at least one terminal device can communicate with the network-side device in the at least one COT according to the first control information. communication. Optionally, the network side device may send the first control information from the downlink transmission starting moment in the first COT. In addition, the above-mentioned first control information may also be sent through public control signaling, terminal-device-specific control signaling, or downlink control signaling of an authorized channel, which can reduce blind detection of the first control information by the terminal device.
与现有机制相比，本发明实施例中，网络侧设备将用于指示至少一个COT内的信道占用参数的第一控制信息发送给至少一个终端设备，既减少了动态通知信道占用参数的信令开销，又使得终端设备能够知晓信道占用期间的信道占用配置全貌，然后根据第一控制信息所提供的更细粒度的信道占用参数，灵活调整对下行信道的监听，从而有利于终端设备减少对下行信道的监听，相应降低终端设备的功耗。Compared with the existing mechanism, in the embodiment of the present invention, the network side device sends the first control information for indicating the channel occupancy parameter in at least one COT to at least one terminal device, which reduces the information required for dynamically notifying the channel occupancy parameter. In addition, the terminal device can know the overall picture of the channel occupancy configuration during the channel occupancy period, and then flexibly adjust the monitoring of the downlink channel according to the finer-grained channel occupancy parameters provided by the first control information. The monitoring of the downlink channel reduces the power consumption of the terminal equipment accordingly.
为使更多的终端设备监听到该第一控制信息，以及准确的、快速的定位到监听第一控制信息的时频位置，还可以约定第一控制信息通过公共控制信令或终端设备专用控制信令或授权信道的下行控制信令发送，从而提高终端设备接收到该第一控制信息的概率，以及终端设备只需要在预先定义的时频位置接收该第一控制信息即可，从而减少终端设备盲目检测第一控制信息的操作，相应也降低终端设备的功耗。In order to enable more terminal devices to monitor the first control information, and accurately and quickly locate the time-frequency position for monitoring the first control information, it can also be stipulated that the first control information is controlled through public control signaling or terminal device-specific Signaling or downlink control signaling of the authorized channel, thereby increasing the probability that the terminal device receives the first control information, and the terminal device only needs to receive the first control information at a predefined time-frequency position, thereby reducing the number of terminals The device blindly detects the operation of the first control information, and correspondingly reduces the power consumption of the terminal device.
在一些应用场景中，网络侧设备获取信道的控制权主要通过下述两种途径：In some application scenarios, the network side device obtains the control right of the channel mainly through the following two ways:
A、由网络侧设备自行取得该控制权A. The network side device obtains the control right by itself
在所述网络侧设备进行下行传输之前，所述网络侧设备通过LBT竞争第一信道，成功竞争第一信道后，就可以通过竞争到的第一信道进行下行传输，同时也会生成上述第一控制信息，并下发给至少一个终端设备。Before the network-side device performs downlink transmission, the network-side device competes for the first channel through LBT. After successfully competing for the first channel, it can perform downlink transmission through the competed first channel, and at the same time generate the above-mentioned first Control information and send it to at least one terminal device.
或者，在知晓终端设备有上行传输需求时，所述网络侧设备通过LBT竞争第一信道，成功竞争第一信道后，则可以生成上述第一控制信息，并将第一控制信息发给至少一个终端设备，以及向各个终端设备分别发送用于指示所述终端设备进行上行传输的上行发送授权信息，以使各终端设备在所述上行发送授权信息所指示的时频资源上进行上行发送。Alternatively, when knowing that the terminal device has an uplink transmission requirement, the network side device competes for the first channel through LBT, and after successfully competing for the first channel, it can generate the above-mentioned first control information, and send the first control information to at least one the terminal device, and respectively sending uplink transmission grant information for instructing the terminal device to perform uplink transmission to each terminal device, so that each terminal device performs uplink transmission on the time-frequency resource indicated by the uplink transmission grant information.
B、由终端设备将取得的控制权转移至网络侧设备B. The terminal device transfers the obtained control right to the network side device
在终端设备通过LBT取得第一信道的控制权后，会使用第一信道进行上行传输，该终端设备的上行传输中可携带第二传输触发信息，不携带第二传输触发信息也可以将该终端设备的上行传输作为一种触发COT传输的操作。After the terminal device obtains the control right of the first channel through LBT, it will use the first channel for uplink transmission. The uplink transmission of the terminal device can carry the second transmission trigger information, and the terminal device can also carry the second transmission trigger information. The uplink transmission of the device is an operation that triggers COT transmission.
第二方面提供的非授权频谱占用的方法中，终端设备接收网络侧设备发送的第一控制信息，所述第一控制信息用于指示至少一个COT内的信道占用参数。该第一控制信息至少可包括以下信息元素之一：In the method for occupying an unlicensed spectrum provided in the second aspect, the terminal device receives first control information sent by the network side device, where the first control information is used to indicate channel occupancy parameters in at least one COT. The first control information may include at least one of the following information elements:
所述至少一个COT中的第一COT、在所述第一COT内传输信号使用的的频域参数、所述第一COT内的时域单元结构或第一传输触发信息。A first COT in the at least one COT, a frequency domain parameter used for transmitting a signal in the first COT, a time domain unit structure in the first COT, or first transmission trigger information.
其中，信息元素第一COT是指至少一个COT中的任意COT，若该第一COT是指最后一个COT时，那么所指示的该第一COT内的信道占用参数仅可用于该第一COT内的数据传输；若该第一COT不是指最后一个COT时，所指示的该第一COT内的信道占用参数可以仅用于该第一COT内的数据传输，还可以用于该第一COT后面的几个COT内的数据传输，本发明实施例不对指示第一COT内数据传输的信道占用参数可用于控制的COT数目进行限定。Wherein, the first COT of the information element refers to any COT in at least one COT, and if the first COT refers to the last COT, then the indicated channel occupancy parameters in the first COT can only be used in the first COT data transmission; if the first COT does not refer to the last COT, the indicated channel occupancy parameters in the first COT can be used only for data transmission in the first COT, and can also be used for subsequent data in the first COT For data transmission in several COTs, this embodiment of the present invention does not limit the number of COTs that can be used to control the channel occupancy parameter indicating data transmission in the first COT.
在第一COT内传输信号使用的频域参数主要包括在所述第一COT内传输信号使用的最大信道频域带宽和在第一COT内使用的频域子带参数。通过将频域子带参数指示给终端设备，能够使得终端设备准确、快速的获取频域参数，从而进行上行发送和下行接收，提高上/下行传输效率。The frequency domain parameters used for signal transmission in the first COT mainly include the maximum channel frequency domain bandwidth used for signal transmission in the first COT and the frequency domain subband parameters used in the first COT. By indicating the frequency-domain sub-band parameters to the terminal equipment, the terminal equipment can accurately and quickly acquire the frequency-domain parameters, so as to perform uplink transmission and downlink reception, and improve uplink/downlink transmission efficiency.
第一COT内的时域单元结构是指：第一COT内的时域单元结构的类型，和/或，第一COT内的时域单元结构的长度。通过向终端设备通知第一COT内的时域单元结构，可以使得终端设备仅在下行时域单元时采取监听下行信道，从而可以降低功耗，并且，根据该第一COT内的时域单元结构在上行时域部分进行上行传输，达到优化终端设备的上行发送和下行接收机制的目的。The time-domain unit structure in the first COT refers to: the type of the time-domain unit structure in the first COT, and/or, the length of the time-domain unit structure in the first COT. By notifying the terminal device of the time domain unit structure in the first COT, the terminal device can only monitor the downlink channel when it is in the downlink time domain unit, thereby reducing power consumption, and according to the time domain unit structure in the first COT The uplink transmission is performed in the uplink time domain part, so as to achieve the purpose of optimizing the uplink sending and downlink receiving mechanism of the terminal equipment.
第一传输触发信息是指能够起到触发一次COT传输的触发信息，使得终端设备能够在接收到该第一传输触发信息后的上行时域部分进行上行传输，第一传输触发信息具体可用于：在所述网络侧设备触发的所述第一COT内，所述终端设备使用时长低于第一阈值的LBT竞争信道。该第一传输触发信息可以是一种特定的随机序列，比如同步序列或者前导序列。The first transmission trigger information refers to the trigger information that can trigger a COT transmission, so that the terminal device can perform uplink transmission in the uplink time domain after receiving the first transmission trigger information. The first transmission trigger information can be specifically used for: In the first COT triggered by the network-side device, the terminal device competes for a channel using an LBT whose duration is lower than a first threshold. The first transmission trigger information may be a specific random sequence, such as a synchronization sequence or a preamble sequence.
所述终端设备根据所述第一控制信息，在所述至少一个COT内与所述网络侧设备进行通信。The terminal device communicates with the network side device in the at least one COT according to the first control information.
在以下几种情况下，终端设备可能会主动去竞争信道：In the following situations, the terminal device may actively compete for the channel:
1、自行通过LBT竞争信道，在竞争到信道后可以将信道的控制权转移给网络侧设备，然后由网络侧设备配置上述第一控制信息，1. Compete for the channel through LBT by yourself. After competing for the channel, you can transfer the control right of the channel to the network-side device, and then the network-side device configures the above-mentioned first control information.
2、在发生以下几种情况时，终端设备才主动去竞争第一信道，从而取得第一信道的控制权，例如在所述至少一个COT中的第二COT内用于传输信号的时域单元结构不存在下行时域部分时，或者在网络侧设备触发的COT(例如第一COT)内用于传输信号的时域单元结构中的下行时域部分无法用于第二传输触发信息时，终端设备都可以去竞争信道，或者当终端设备在网络侧设备触发的COT内无法完成上行传输时，该终端设备可以在当前网络侧设备触发的COT结束后，通过LBT竞争信道，并在竞争信道成功后进行上行传输，从而触发一次新的COT传输。2. When the following situations occur, the terminal device actively competes for the first channel, so as to obtain the control right of the first channel, for example, the time domain unit used to transmit signals in the second COT of the at least one COT When there is no downlink time domain part in the structure, or when the downlink time domain part in the time domain unit structure used to transmit signals in the COT (such as the first COT) triggered by the network side device cannot be used for the second transmission trigger information, the terminal All devices can compete for the channel, or when the terminal device cannot complete the uplink transmission within the COT triggered by the network side device, the terminal device can compete for the channel through LBT after the end of the COT triggered by the network side device, and succeed in competing for the channel Then perform uplink transmission, thus triggering a new COT transmission.
3、网络侧设备预先告知过终端设备后续传输所需的某些信道占用参数，那么，该终端设备能够通过LBT竞争信道，并在信道竞争成功后的上行传输中携带第二传输触发信息。3. The network side device notifies the terminal device in advance of certain channel occupancy parameters required for subsequent transmission, then the terminal device can compete for the channel through LBT, and carry the second transmission trigger information in the uplink transmission after the successful channel competition.
在上述1-3三种情况中，终端设备取得信道的控制权后，可以将信道的控制权转移给网络侧设备，例如，该终端设备以上行传输的方式，并在该上行传输中携带第二传输触发信息，该第二传输触发信息用于通知所述网络侧设备和/或所述另一终端设备：将至少一个第三COT中的每个COT内的第一个进行上行传输的所述终端设备的起始传输时刻作为上行触发时刻。从而，使得网络侧设备在获取信道的控制权后，生成相应的控制信息并下发给各终端设备。当然，该终端设备可以通过类似发现信号的方式将第二传输触发信息发送给与自身物理位置相邻的终端设备，触发这些终端设备使用时长低于第一阈值的LBT竞争信道，并在上述终端设备触发的至少一个第三COT内进行上行传输，当然，也可以不发送第二传输触发信息，也能达到触发这些终端设备进行上行传输的目的。In the above three situations 1-3, after the terminal device obtains the control right of the channel, it can transfer the control right of the channel to the network side device. Two transmission trigger information, where the second transmission trigger information is used to notify the network side device and/or the other terminal device: the first one in each COT of the at least one third COT is to be uplink transmitted The initial transmission time of the above-mentioned terminal equipment is used as the uplink trigger time. Therefore, after obtaining the control right of the channel, the network side device generates corresponding control information and sends it to each terminal device. Of course, the terminal device may send the second transmission trigger information to the terminal devices physically adjacent to itself in a manner similar to the discovery signal, triggering these terminal devices to use the LBT contention channel whose duration is lower than the first threshold, and in the above terminal Uplink transmission is performed in at least one third COT triggered by the device. Of course, the purpose of triggering these terminal devices to perform uplink transmission can also be achieved without sending the second transmission trigger information.
需要说明的是，终端设备主动去竞争信道的控制权需要采用时长高于第二阈值的LBT竞争信道，其中，时长高于第二阈值的LBT的长度与所述终端设备监听信道时的随机退避时长相关，可见，通过规定每个终端设备监听信道的随机退避时长，可以保证多用户同时传输有条不紊的进行，从而提高多用户同时传输的传输效率。It should be noted that the control right of the terminal device to actively compete for the channel needs to use the LBT whose duration is higher than the second threshold to compete for the channel, wherein the length of the LBT whose duration is higher than the second threshold is related to the random backoff when the terminal device monitors the channel It can be seen that, by specifying the random backoff time for each terminal device to monitor the channel, the simultaneous transmission of multiple users can be carried out in an orderly manner, thereby improving the transmission efficiency of the simultaneous transmission of multiple users.
在另一些应用场景中，终端设备除了上述主动竞争信道以进行上行传输之外，还可以在其他终端设备主动竞争信道后的至少一个第四COT内进行上行传输，具体如下：In other application scenarios, in addition to actively competing for the channel for uplink transmission, the terminal device may also perform uplink transmission in at least one fourth COT after other terminal devices actively compete for the channel, as follows:
该终端设备接收网络侧设备发送的第二控制信息，第二控制信息指示所述另一终端设备触发的至少一个第四COT内的信道占用参数，另一终端设备触发至少一个第四COT传输的流程与上述终端设备主动竞争信道控制权的流程，此处不再赘述。The terminal device receives the second control information sent by the network side device, the second control information indicates the channel occupancy parameters in the at least one fourth COT triggered by the other terminal device, and the transmission of the at least one fourth COT triggered by the other terminal device The process is the same as the above-mentioned process in which the terminal device actively competes for the channel control right, and will not be repeated here.
然后，该终端设备可以根据所述第二控制信息指示的所述至少一个第四COT内的信道占用参数，在所述第二控制信息指示的所述至少一个第四COT内与所述网络侧设备进行通信。Then, the terminal device may communicate with the network side in the at least one fourth COT indicated by the second control information according to the channel occupancy parameters in the at least one fourth COT indicated by the second control information devices to communicate.
此外，上述第一控制信息和上述第二控制信息通过公共控制信令或终端设备专用控制信令或授权信道的下行控制信令发送，能够达到减少终端设备盲目检测第一控制信息的目的。In addition, the above-mentioned first control information and the above-mentioned second control information are sent through common control signaling or terminal-device-specific control signaling or downlink control signaling of authorized channels, which can reduce blind detection of the first control information by terminal devices.
本发明第三方面提供一种网络侧设备，具有实现对应于上述第一方面提供的非授权频谱信道占用的方法的功能。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。硬件或软件包括一个或多个与上述功能相对应的模块，所述模块可以是软件和/或硬件。The third aspect of the present invention provides a network side device, which has the function of implementing the method corresponding to the occupation of the unlicensed spectrum channel provided in the first aspect. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. Hardware or software includes one or more modules corresponding to the above functions, and the modules may be software and/or hardware.
一种可能的设计中，网络侧设备包括：In a possible design, the network side equipment includes:
处理模块，用于生成第一控制信息，所述第一控制信息用于指示至少一个COT内的信道占用参数；A processing module, configured to generate first control information, where the first control information is used to indicate channel occupancy parameters in at least one COT;
收发模块，用于将所述处理模块生成的第一控制信息发送给至少一个终端设备，以使所述至少一个终端设备根据所述第一控制信息，与所述网络侧设备在所述至少一个COT内进行通信。A transceiver module, configured to send the first control information generated by the processing module to at least one terminal device, so that the at least one terminal device communicates with the network side device in the at least one terminal device according to the first control information. Communication within the COT.
一种可能的设计中，网络侧设备包括：In a possible design, the network side equipment includes:
相互连接的处理器、收发器和存储器；Interconnected processors, transceivers and memory;
其中，所述存储器用于存储程序代码，所述处理器用于调用所述存储器中的程序代码来执行第一方面所述的技术方案。Wherein, the memory is used to store program codes, and the processor is used to invoke the program codes in the memory to execute the technical solution described in the first aspect.
本发明第四方面提供一种终端设备，具有实现对应于上述第二方面提供的非授权频谱信道占用的方法的功能。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。硬件或软件包括一个或多个与上述功能相对应的模块，所述模块可以是软件和/或硬件。A fourth aspect of the present invention provides a terminal device, which has a function of implementing the method corresponding to the method for occupying an unlicensed spectrum channel provided in the second aspect. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. Hardware or software includes one or more modules corresponding to the above functions, and the modules may be software and/or hardware.
一种可能的设计中，终端设备包括：In a possible design, the terminal equipment includes:
收发模块，用于接收网络侧设备发送的第一控制信息，所述第一控制信息用于指示至少一个COT内的信道占用参数；A transceiver module, configured to receive first control information sent by a network side device, where the first control information is used to indicate channel occupancy parameters in at least one COT;
处理模块，用于根据所述收发模块接收到的所述第一控制信息，利用所述收发模块在所述至少一个COT内与所述网络侧设备进行通信。A processing module, configured to use the transceiver module to communicate with the network side device in the at least one COT according to the first control information received by the transceiver module.
一种可能的设计中，终端设备包括：In a possible design, the terminal equipment includes:
相互连接的处理器、收发器和存储器；Interconnected processors, transceivers and memory;
其中，所述存储器用于存储程序代码，所述处理器用于调用所述存储器中的程序代码来执行第二方面所述的技术方案。Wherein, the memory is used to store program codes, and the processor is used to invoke the program codes in the memory to execute the technical solution described in the second aspect.
相较于现有技术，本发明提供的方案中，网络侧设备将用于指示至少一个COT内的信道占用参数的第一控制信息发送给至少一个终端设备，既减少了动态通知信道占用参数的信令开销，又使得终端设备能够知晓信道占用期间的信道占用配置全貌，然后根据第一控制信息所提供的更细粒度的信道占用参数，灵活调整对下信道的监听，从而有利于终端设备减少对下行信道的监听，相应降低终端设备的功耗。Compared with the prior art, in the solution provided by the present invention, the network side device sends the first control information used to indicate the channel occupancy parameters in at least one COT to at least one terminal device, which reduces the burden of dynamically notifying the channel occupancy parameters. The signaling overhead enables the terminal device to know the overall picture of the channel occupancy configuration during the channel occupancy period, and then flexibly adjusts the monitoring of the lower channel according to the finer-grained channel occupancy parameters provided by the first control information, which is beneficial for the terminal device to reduce The monitoring of the downlink channel reduces the power consumption of the terminal equipment accordingly.
附图说明Description of drawings
图1为本实施例中非授权频谱信道占用的方法的流程示意图；FIG. 1 is a schematic flowchart of a method for occupying an unlicensed spectrum channel in this embodiment;
图2为本实施例中时域单元结构的一种示意图；Fig. 2 is a kind of schematic diagram of time domain unit structure in the present embodiment;
图3为本实施例中时域单元结构的另一种示意图；FIG. 3 is another schematic diagram of the time-domain unit structure in this embodiment;
图4为本实施例中时域单元结构的另一种示意图；FIG. 4 is another schematic diagram of the time-domain unit structure in this embodiment;
图5为本实施例中时域单元结构的另一种示意图；FIG. 5 is another schematic diagram of the time-domain unit structure in this embodiment;
图6为本实施例中网络侧设备的一种结构示意图；FIG. 6 is a schematic structural diagram of a network side device in this embodiment;
图7为本实施例中终端设备的一种结构示意图；FIG. 7 is a schematic structural diagram of a terminal device in this embodiment;
图8为本实施例中实现非授权频谱信道占用的方法的实体装置的一种结构示意图。FIG. 8 is a schematic structural diagram of a physical device implementing a method for occupying an unlicensed spectrum channel in this embodiment.
具体实施方式Detailed ways
本发明提供了一种非授权频谱信道占用的方法及设备，主要用于非授权频谱，能够为终端设备提供更细粒度的信道占用参数，使得终端设备能够知晓信道占用期间的信道占用配置全貌，从而有利于终端设备减少对下行信道的监听，相应降低终端设备的功耗。The present invention provides a method and device for channel occupation of unlicensed spectrum, which is mainly used for unlicensed spectrum, and can provide more fine-grained channel occupancy parameters for terminal equipment, so that terminal equipment can know the overall picture of channel occupancy configuration during channel occupancy, Therefore, it is beneficial for the terminal equipment to reduce the monitoring of the downlink channel, and correspondingly reduce the power consumption of the terminal equipment.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例，基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts, all belong to the protection scope of the present invention.
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，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模块的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或模块，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模块，本文中所出现的模块的划分，仅仅是一种逻辑上的划分，实际应用中实现时可以有另外的划分方式，例如多个模块可以结合成或集成在另一个系统中，或一些特征可以忽略，或不执行，另外，所显示的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，模块之间的间接耦合或通信连接可以是电性或其他类似的形式，本文中均不作限定。并且，作为分离部件说明的模块或子模块可以是也可以不是物理上的分离，可以是也可以不是物理模块，或者可以分布到多个电路模块中，可以根据实际的需要选择其中的部分或全部模块来实现本发明实施例方案的目的。The terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or modules is not necessarily limited to the expressly listed Those steps or modules, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products or equipment, and the division of modules presented herein is only a logical division, In actual application, there may be other division methods, for example, multiple modules may be combined or integrated in another system, or some features may be ignored, or not implemented. In addition, the mutual coupling shown or discussed Or the direct coupling or communication connection may be through some interfaces, and the indirect coupling or communication connection between modules may be electrical or other similar forms, which are not limited herein. Moreover, the modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed into multiple circuit modules, and some or all of them may be selected according to actual needs module to realize the purpose of the solution of the embodiment of the present invention.
下面先对本发明实施例可能涉及的一些概念进行简单介绍。Some concepts that may be involved in the embodiments of the present invention are briefly introduced below.
LBT：是一种避免各节点之间在使用非授权频谱资源时的冲突的机制，具体来说，由于在非授权频谱上部署的通信系统通常基于竞争的方式来使用/共享无线资源，所以下辖的各节点在发送信号之前，首先会监听非授权频谱是否空闲，比如通过非授权频谱上的接收功率的大小来判断其忙闲状态，如果接收功率小于一定门限，则认为非授权频谱上没有干扰源且处于空闲状态，则可以在该非授权频谱上发送信号，否则不发送信号。LBT: It is a mechanism to avoid conflicts between nodes when using unlicensed spectrum resources. Specifically, since communication systems deployed on unlicensed spectrums usually use/share wireless resources based on competition, the following Before sending signals, each node under the jurisdiction will first monitor whether the unlicensed spectrum is idle, such as judging its busy status by the received power on the unlicensed spectrum, if the received power is less than a certain threshold, it is considered that there is no unlicensed spectrum If the interference source is in an idle state, the signal can be sent on the unlicensed spectrum, otherwise no signal is sent.
最大信道占用时长(英文全称：Maximum Channel Occupancy Time，英文简称：MCOT)：表示一次传输过程的信道占用时长(英文全称：Channel Occupancy Time，英文简称：COT)的最大值。MCOT的大小受限于所传输数据的业务类型以及所占用的非授权频谱的使用法规。Maximum Channel Occupancy Time (English full name: Maximum Channel Occupancy Time, English abbreviation: MCOT): Indicates the maximum channel occupancy time (English full name: Channel Occupancy Time, English abbreviation: COT) of a transmission process. The size of the MCOT is limited by the business type of the transmitted data and the usage regulations of the occupied unlicensed spectrum.
时域单元：是指预定义的时域结构，在时域上所划分的时域结构本发明不作限定，时域单元的结构主要包括：全下行时域结构、全上行时域结构、起始下行自包含时域结构和起始上行自包含时域结构。时域单元可以称之为子帧、时隙(slot)、微时隙(mini-slot)或者其他类似的名称，可用于表示时域资源。以子帧为例，一个子帧的长度可以为1ms。以时隙为例，一个时隙中可以包括7个OFDM(Orthogonal Frequency-Division Multiplexing，正交频分复用)符号，或者，一个时隙中可以包括14个OFDM符号；以微时隙为例，一个微时隙中所包含的OFDM符号数会小于一个时隙中所包含的OFDM符号。Time domain unit: refers to a predefined time domain structure, and the time domain structure divided in the time domain is not limited in the present invention. The structure of the time domain unit mainly includes: full downlink time domain structure, full uplink time domain structure, initial The downlink self-contained time domain structure and the starting uplink self-contained time domain structure. A time-domain unit may be called a subframe, a slot (slot), a mini-slot (mini-slot) or other similar names, and may be used to represent time-domain resources. Taking a subframe as an example, the length of a subframe may be 1 ms. Taking a time slot as an example, a time slot can include 7 OFDM (Orthogonal Frequency-Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols, or a time slot can include 14 OFDM symbols; taking a mini-slot as an example , the number of OFDM symbols included in a mini-slot is smaller than the number of OFDM symbols included in a slot.
本发明中的网络侧设备为一种将终端设备接入到无线网络的设备，可以称之为基站，包括但不限于：演进型节点B(英文全称：evolved Node Base，英文简称：eNB)、无线网络控制器(英文全称：Radio Network Controller，英文简称：RNC)、节点B(英文全称：Node B，英文简称：NB)、基站控制器(英文全称：Base Station Controller，英文简称：BSC)、基站收发台(英文全称：Base Transceiver Station,英文简称：BTS)、家庭基站(例如，Homeevolved NodeB，或Home Node B，英文简称：HNB)、基带单元(英文全称：BaseBand Unit，英文简称：BBU)。The network-side device in the present invention is a device for connecting terminal devices to a wireless network, which can be called a base station, including but not limited to: evolved Node B (English full name: evolved Node Base, English abbreviation: eNB), Radio Network Controller (English full name: Radio Network Controller, English abbreviation: RNC), node B (English full name: Node B, English abbreviation: NB), base station controller (English full name: Base Station Controller, English abbreviation: BSC), Base transceiver station (English full name: Base Transceiver Station, English abbreviation: BTS), home base station (for example, Homeevolved NodeB, or Home Node B, English abbreviation: HNB), baseband unit (English full name: BaseBand Unit, English abbreviation: BBU) .
本发明涉及的终端设备(Terminal Device)，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。终端设备可以经无线接入网(英文全称：Radio Access Network，英文简称：RAN)与一个或多个核心网进行通信，终端设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(英文全称：PersonalCommunication Service，英文简称：PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(Wireless Local Loop，英文简称：WLL)站、个人数字助理(英文全称：PersonalDigital Assistant，英文简称：PDA)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(RemoteTerminal)、接入终端(Access Terminal)、用户终端(User Terminal)、终端设备、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment)。The terminal device (Terminal Device) involved in the present invention may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The terminal device can communicate with one or more core networks via the radio access network (English full name: Radio Access Network, English abbreviation: RAN), and the terminal device can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) And computers with mobile terminals, such as portable, pocket, hand-held, built-in computer or vehicle-mounted mobile devices, which exchange speech and/or data with the radio access network. For example, Personal Communication Service (English full name: Personal Communication Service, English abbreviation: PCS) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (Wireless Local Loop, English abbreviation: WLL) station, personal digital assistant ( English full name: PersonalDigital Assistant, English abbreviation: PDA) and other equipment. A wireless terminal can also be called a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station), a mobile station (Mobile), a remote station (Remote Station), an access point (Access Point), Remote Terminal, Access Terminal, User Terminal, Terminal Device, User Agent, User Device, or User Equipment.
由于网络侧设备或终端设备是基于竞争获得非授权频谱，所以每次竞争非授权频谱的信道占用时长、信道占用带宽等信道占用参数并非一成不变，为了使得终端设备及时获知当前的信道占用参数，以及更加有利于终端设备与网络侧设备之间的通信，本发明实施例主要提供以下技术方案向终端设备提供当前的信道占用参数：Since network-side devices or terminal devices obtain unlicensed spectrum based on competition, the channel occupancy parameters such as channel occupancy time and channel occupancy bandwidth of each competition for unlicensed spectrum are not static. In order for terminal equipment to know the current channel occupation parameters in time, and It is more conducive to the communication between the terminal device and the network side device. The embodiment of the present invention mainly provides the following technical solutions to provide the current channel occupancy parameters to the terminal device:
网络侧设备获取信道的控制权，然后确定占用该信道的一个COT，并生成用于指示至少一个COT内的信道占用参数的控制信息，将生成的控制信息下发给至少一个终端设备，由于向终端设备指示了细粒度的信道占用参数，所以，可以使得这些终端设备根据这些细粒度的信道占用参数来进行上行发送和下行接收，其中之一的好处有：达到终端设备只在需要监听信道的时候才监听信道，从而降低终端设备功耗的目的。The network side device obtains the control right of the channel, then determines a COT occupying the channel, generates control information indicating the channel occupancy parameters in at least one COT, and sends the generated control information to at least one terminal device. Terminal devices indicate fine-grained channel occupancy parameters. Therefore, these terminal devices can be used to perform uplink transmission and downlink reception according to these fine-grained channel occupancy parameters. One of the benefits is: the terminal device only needs to monitor the channel The channel is only monitored at a certain time, so as to reduce the power consumption of the terminal equipment.
请参照图1，以下对本发明提供一种非授权频谱信道占用的方法进行举例说明，在非授权频谱场景下，网络侧设备需要对其中的频谱资源进行调度，网络侧设备在取得第一信道的控制权后，会将第一信道的控制信息发送给各个终端设备，使得各终端设备能够确定接收下行调度信息的时频位置，从而根据下行调度信息中的下行接收授权来接收数据，以及根据下行调度信息中的上行发送授权来发送数据。本发明实施例具体包括：Please refer to Fig. 1. The method for occupying an unlicensed spectrum channel provided by the present invention is illustrated below. In an unlicensed spectrum scenario, the network-side device needs to schedule the spectrum resources therein, and the network-side device obtains the first channel. After the control right, the control information of the first channel will be sent to each terminal device, so that each terminal device can determine the time-frequency position for receiving the downlink scheduling information, so as to receive data according to the downlink receiving authorization in the downlink scheduling information, and according to the downlink The uplink transmission grant in the scheduling information is used to transmit data. Embodiments of the present invention specifically include:
101、网络侧设备生成第一控制信息。101. The network side device generates first control information.
其中，所述第一控制信息用于指示至少一个COT内的信道占用参数。考虑到基于竞争获取的非授权频谱的每次COT内的信道占用参数不尽相同，所述第一控制信息中可以只包含用于描述当前COT内的公共信道占用参数的公共控制信息，和/或，包含用于描述后续的一个或多个连续的COT内的公共信道占用参数的公共控制信息，也可以只包含用于描述当前COT内的信道占用参数的私有控制信息，或只包含用于描述后续的一个COT内的信道占用参数的私有控制信息，还可以同时包含所述公共控制信息和所述私有控制信息。Wherein, the first control information is used to indicate channel occupancy parameters in at least one COT. Considering that the channel occupancy parameters in each COT of the unlicensed spectrum obtained based on competition are different, the first control information may only include public control information used to describe the common channel occupancy parameters in the current COT, and/ Or, it contains the public control information used to describe the common channel occupancy parameters in one or more consecutive COTs, or only contains the private control information used to describe the channel occupancy parameters in the current COT, or only contains the information used for The private control information describing the channel occupancy parameters in a subsequent COT may also include the public control information and the private control information at the same time.
具体来说，第一控制信息可以指示终端设备在一个COT内占用第一信道，也可以指示终端设备在后续的COT内占用第一信道。该第一控制信息可以仅用于控制终端设备在当次COT内占用第一信道；也可以用于控制终端设备在连续多个COT内占用第一信道；还可以仅仅只在首次通知终端设备时，通知终端设备在首个COT内如何占用第一信道，后面的COT都不再另外通知终端设备，而是默认遵循首个COT内的控制信息来占用第一信道。本发明中的控制信息是针对每一次信道占用而言的，并且，随着业务类型等因素的变化，终端设备在每次LBT后占用信道的控制信息会相应变化，因此，网络侧设备需要根据业务类型的变化，动态的生成一个控制信息，并且，每次取得信道的控制权后，都可以向终端设备下发生成的控制信息。Specifically, the first control information may instruct the terminal device to occupy the first channel in one COT, or may instruct the terminal device to occupy the first channel in a subsequent COT. The first control information can only be used to control the terminal device to occupy the first channel in the current COT; it can also be used to control the terminal device to occupy the first channel in multiple consecutive COTs; it can also be used only when the terminal device is notified for the first time , inform the terminal device how to occupy the first channel in the first COT, and the subsequent COTs will no longer notify the terminal device separately, but follow the control information in the first COT to occupy the first channel by default. The control information in the present invention is for each channel occupancy, and as the service type and other factors change, the control information of the channel occupied by the terminal equipment after each LBT will change accordingly. Therefore, the network side equipment needs to be based on The change of the service type dynamically generates a piece of control information, and every time the control right of the channel is obtained, the generated control information can be sent to the terminal equipment.
下面针对第一控制信息所指示的信道占用参数进行说明：The following describes the channel occupancy parameters indicated by the first control information:
所述信道占用参数至少可包括以下信息元素之一：The channel occupancy parameter may include at least one of the following information elements:
所述至少一个COT中的第一COT、在所述第一COT内传输信号使用的频域参数、所述第一COT内的时域单元结构或第一传输触发信息。A first COT in the at least one COT, a frequency domain parameter used for transmitting a signal in the first COT, a time domain unit structure in the first COT, or first transmission trigger information.
其中，信息元素第一COT是指至少一个COT中的任意COT，若该第一COT是指最后一个COT时，那么所指示的该第一COT内的信道占用参数仅可用于该第一COT内的数据传输；若该第一COT不是指最后一个COT时，所指示的该第一COT内的信道占用参数可以仅用于该第一COT内的数据传输，还可以用于该第一COT后面的几个COT内的数据传输，本发明实施例不对指示第一COT内数据传输的信道占用参数可用于控制的COT数目进行限定。信息元素第一COT可以用时间单位如us或ms来表示，或者也可以用第一COT内所包含的OFDM符号数来表示。示例性地，假如用10bits来指示信息元素第一COT，若取值单位为us，则信息元素第一COT的取值范围为[0～1023]us；若取值单位为符号，则信息元素第一COT的取值范围为[0～1023]个符号。在不增加用于指示信息元素第一COT的bits数目的情况下，可以通过指示粒度(或称为量化精度)来扩展信息元素的取值范围。比如在指示粒度为1个OFDM符号时，2bits(共有[00,01,10,11]四种情况)可以表示[0,1,2,3]个符号；在指示粒度为2个OFDM符号时，2bits可以表示[0,2,4,6]个符号；在指示粒度为3个OFDM符号时，2bits可以表示[0,3,6,9]个符号。Wherein, the first COT of the information element refers to any COT in at least one COT, and if the first COT refers to the last COT, then the indicated channel occupancy parameters in the first COT can only be used in the first COT data transmission; if the first COT does not refer to the last COT, the indicated channel occupancy parameters in the first COT can be used only for data transmission in the first COT, and can also be used for subsequent data in the first COT For data transmission in several COTs, this embodiment of the present invention does not limit the number of COTs that can be used to control the channel occupancy parameter indicating data transmission in the first COT. The information element first COT may be represented by a time unit such as us or ms, or may also be represented by the number of OFDM symbols contained in the first COT. For example, if 10 bits are used to indicate the first COT of the information element, if the value unit is us, the value range of the first COT of the information element is [0~1023]us; if the value unit is a symbol, the information element The value range of the first COT is [0-1023] symbols. Without increasing the number of bits used to indicate the first COT of the information element, the value range of the information element can be extended by indicating the granularity (or quantization precision). For example, when the indication granularity is 1 OFDM symbol, 2bits (there are four cases of [00, 01, 10, 11]) can represent [0, 1, 2, 3] symbols; when the indication granularity is 2 OFDM symbols , 2bits can represent [0,2,4,6] symbols; when the indication granularity is 3 OFDM symbols, 2bits can represent [0,3,6,9] symbols.
以信息元素第一COT以其所包含的OFDM符号数来表示为例，当循环前缀(CyclicPrefix，CP)类型或长度已知时(比如默认为常规CP)，通过所述信道占用参数可以显示或者隐式的方式通知终端设备OFDM符号的子载波间隔，这是由于OFDM符号的长度主要取决于其频域子载波间隔的大小；否则，通过所述信道占用参数或者其他方式，还需要告知终端设备CP类型或长度。示例性地，一种显示的方式可以是，所述第一控制信息中包括用于表示第一COT的OFDM符号的配置参数，可以包括但不限于长度、子载波间隔、CP类型或者长度中的至少一项。一种隐式的方式可以是，所述用于表示第一COT的OFDM符号的参数与发送第一控制信息所采用的参数配置相同，或者所述用于表示第一COT的OFDM符号对应的子载波间隔与下行传输所采用的最大子载波间隔相同，或者所述用于表示第一COT的OFDM符号所对应的子载波间隔与在所述第一COT内传输信号所使用的频域参数中指示的各子带上的最大子载波间隔相同。Taking the information element first COT represented by the number of OFDM symbols it contains as an example, when the type or length of the cyclic prefix (CyclicPrefix, CP) is known (for example, the default is a regular CP), the channel occupancy parameter can be displayed or Notify the terminal device of the subcarrier spacing of the OFDM symbol in an implicit way, because the length of the OFDM symbol mainly depends on the size of the subcarrier spacing in its frequency domain; otherwise, the terminal device needs to be informed through the channel occupancy parameters or other methods CP type or length. Exemplarily, a manner of display may be that the first control information includes configuration parameters used to indicate the OFDM symbol of the first COT, which may include but not limited to length, subcarrier spacing, CP type or length at least one. An implicit way may be that the parameter used to represent the OFDM symbol of the first COT is the same as the parameter configuration used to send the first control information, or the sub-parameter corresponding to the OFDM symbol used to represent the first COT The carrier spacing is the same as the maximum subcarrier spacing used for downlink transmission, or the subcarrier spacing corresponding to the OFDM symbol used to represent the first COT is the same as that indicated in the frequency domain parameters used to transmit signals in the first COT The maximum subcarrier spacing on each subband is the same.
在第一COT内传输信号使用的频域参数主要包括在所述第一COT内传输信号使用的最大信道频域带宽和在第一COT内使用的频域子带参数，在第一COT内传输信号使用的最大信道频域带宽是指：在第一COT内终端设备传输信号(包括从网络侧设备接收信号和向网络侧设备发送信号)能够使用的最大信道频域带宽，那么终端设备在该第一COT内传输信号能够占用的带宽只能小于或等于第一控制信息所指示的最大信道带宽。The frequency domain parameters used for transmitting signals in the first COT mainly include the maximum channel frequency domain bandwidth used for transmitting signals in the first COT and the frequency domain subband parameters used in the first COT. The maximum channel frequency domain bandwidth used by the signal refers to the maximum channel frequency domain bandwidth that the terminal device can use to transmit signals (including receiving signals from the network side device and sending signals to the network side device) in the first COT. The bandwidth that can be occupied by the transmission signal in the first COT can only be smaller than or equal to the maximum channel bandwidth indicated by the first control information.
在第一COT内使用的频域子带参数是指：用于指示频带划分、各子带上的子载波间隔和循环前缀长度的指示信息，所述指示信息包含下述a、b和c中的任一种：The frequency domain subband parameters used in the first COT refer to: indication information used to indicate frequency band division, subcarrier spacing on each subband, and cyclic prefix length, and the indication information includes the following a, b, and c Either of:
a、频带划分的取值、各子带上的子载波间隔的取值或循环前缀长度的取值中的至少一项。a. At least one of the value of frequency band division, the value of subcarrier spacing on each sub-band, or the value of cyclic prefix length.
b、指示频带划分的序号、指示各子带上的子载波间隔的序号或指示循环前缀长度的序号中的至少一项。b. At least one of a sequence number indicating frequency band division, a sequence number indicating subcarrier spacing on each subband, or a sequence number indicating a cyclic prefix length.
c、指示预设组合的序号，所述预设组合包括频带划分、各子带上的子载波间隔和循环前缀长度中的至少一项。c. A sequence number indicating a preset combination, where the preset combination includes at least one of frequency band division, subcarrier spacing on each subband, and cyclic prefix length.
由于在终端设备进行上行发送和下行接收时，网络侧设备会为终端设备配置多种频域参数，那么可以通过a、b或c来指示给终端设备，使得终端设备能够准确、快速的获取频域参数，并且，在指示c时能够节省信令开销。Since the network side device will configure various frequency domain parameters for the terminal device when the terminal device performs uplink transmission and downlink reception, then a, b, or c can be used to indicate to the terminal device, so that the terminal device can accurately and quickly obtain frequency domain parameters. domain parameter, and can save signaling overhead when c is indicated.
所述第一COT内的时域单元结构是指：第一COT内的时域单元结构的类型，和/或，第一COT内的时域单元结构的长度。时域单元类型是指一个时域单元是下行时域单元、上行时域单元、部分时域单元、特殊时域单元(起始下行自包含时域单元，或者起始上行自包含时域单元)还是空白时域单元。时域单元长度是时域单元的持续时间，关于时域单元的长度划分本发明不作限定。如果第一COT内的时域单元结构中包含每个时域单元的长度，那么就不需要再携带第一COT这一信息元素。通过向终端设备通知第一COT内的时域单元结构，可以使得终端设备仅在下行时域单元时采取监听下行信道，从而可以降低功耗，并且，根据该第一COT内的时域单元结构在上行时域部分中进行上行传输，达到优化终端设备的上行发送和下行接收机制的目的。The time-domain unit structure in the first COT refers to: the type of the time-domain unit structure in the first COT, and/or, the length of the time-domain unit structure in the first COT. The time domain unit type means that a time domain unit is a downlink time domain unit, an uplink time domain unit, a partial time domain unit, or a special time domain unit (the initial downlink self-contained time domain unit, or the initial uplink self-contained time domain unit) It is also a blank time domain unit. The length of the time-domain unit is the duration of the time-domain unit, and the present invention does not limit the division of the length of the time-domain unit. If the time-domain unit structure in the first COT includes the length of each time-domain unit, then the information element of the first COT does not need to be carried. By notifying the terminal device of the time domain unit structure in the first COT, the terminal device can only monitor the downlink channel when it is in the downlink time domain unit, thereby reducing power consumption, and according to the time domain unit structure in the first COT The uplink transmission is performed in the uplink time domain part, so as to achieve the purpose of optimizing the uplink sending and downlink receiving mechanism of the terminal equipment.
时域单元的长度可以用时间单位如us或ms来表示，或者也可以以该时域单元中所包含的OFDM符号来表示，或者还可以根据该时域单元是子帧、时隙或者微时隙来表示。The length of a time domain unit can be represented by a time unit such as us or ms, or it can also be represented by the OFDM symbol contained in the time domain unit, or it can also be expressed according to whether the time domain unit is a subframe, a time slot or a microtime gap to represent.
示例性地，一种指示第一COT内的时域单元结构的方式是，至少指示出所述第一COT内的第一个时域单元的长度，或者最后一个时域单元的长度，或者第一个时域单元和最后一个时域单元的长度，上述指示长度方式可以通过指示时域单元所包含的OFDM符号数目或者其它方式来实现。在其它的实施方式中，网络侧设备还可以指示出在所述第一个时域单元和最后一个时域单元之间的其他时域单元(例如，以子帧、时隙或者微时隙为单位)的数目。Exemplarily, a manner of indicating the time-domain unit structure in the first COT is at least indicating the length of the first time-domain unit in the first COT, or the length of the last time-domain unit, or the length of the first time-domain unit The length of a time-domain unit and the last time-domain unit, the above-mentioned manner of indicating the length may be realized by indicating the number of OFDM symbols included in the time-domain unit or by other means. In other implementation manners, the network side device may also indicate other time domain units between the first time domain unit and the last time domain unit (for example, in the form of subframes, time slots or mini-slots units).
在一些实施方式中，当第一COT内存在一个或多个用于下行-上行转换的保护间隔(包括下行传输和上行传输之间所需要预留的收发转换时间，以及用于LBT的时间(可以为零))，即在第一COT内需要进行下行传输和上行传输时，一种指示第一COT内的时域单元结构的方法是至少指示出包含下行-上行转换的保护间隔的时域单元的结构，以时域单元为时隙为例，在一个时隙内包含下行传输部分及上行传输部分，下行传输部分和上行传输部分可以为微时隙，则该时域单元为一个时隙且包含两个微时隙和一个位于两个微时隙之间的保护间隔的结构。在其他实施方式中，网络侧设备还可以进一步指示下行-上行转换的保护间隔或者所述保护间隔所在的时域单元(比如时隙)在所述第一COT内的起始时刻，例如相对于第一COT起始时刻的时间偏移量。In some embodiments, when there are one or more guard intervals for downlink-uplink conversion in the first COT (including the transceiving conversion time that needs to be reserved between downlink transmission and uplink transmission, and the time for LBT ( can be zero)), that is, when downlink transmission and uplink transmission are required in the first COT, a method to indicate the time domain unit structure in the first COT is to at least indicate the time domain including the guard interval of downlink-uplink conversion The structure of the unit, taking the time domain unit as a time slot as an example, includes a downlink transmission part and an uplink transmission part in a time slot, and the downlink transmission part and the uplink transmission part can be mini-slots, then the time domain unit is a time slot And it contains two mini-slots and a guard interval between the two mini-slots. In other implementation manners, the network side device may further indicate the guard interval of the downlink-uplink conversion or the start time of the time domain unit (such as a time slot) where the guard interval is located in the first COT, for example, relative to The time offset of the start moment of the first COT.
网络侧设备向终端设备指示第一COT内的时域单元结构的好处还包括：若在第一控制信息中指示一个COT包含有8个子帧，除第一个子帧为下行子帧之外，其余都为上行子帧，那么，如果终端设备在第一个子帧的下行控制信令中没有接收到关于自身的上行发送授权信息，则该终端设备可以从第二子帧开始不再监听下行信道，进入节能或休眠模式，从而降低终端设备的功耗。The advantage of the network side device indicating to the terminal device the time-domain unit structure in the first COT also includes: if it is indicated in the first control information that a COT contains 8 subframes, except that the first subframe is a downlink subframe, The rest are all uplink subframes, so if the terminal device does not receive its own uplink transmission authorization information in the downlink control signaling of the first subframe, the terminal device can no longer monitor the downlink from the second subframe channel, enter power-saving or sleep mode, thereby reducing the power consumption of terminal equipment.
所述第一传输触发信息是指能够起到触发一次COT传输的触发信息，使得终端设备能够在接收到该第一传输触发信息后的上行传输部分进行上行传输，具体来说，所述第一传输触发信息可用于指示终端设备：在所述网络侧设备触发的第一COT内，所述终端设备使用时长低于第一阈值的LBT(例如第二类LBT)竞争信道，然后进行上行传输。第一传输触发信息可以是一种特定的随机序列，比如同步序列或者前导序列，可以起到触发一次COT传输的作用，便于终端设备能够在第一COT内进行上行传输。The first transmission trigger information refers to trigger information that can trigger a COT transmission, so that the terminal device can perform uplink transmission after receiving the first transmission trigger information. Specifically, the first The transmission trigger information may be used to instruct the terminal device: within the first COT triggered by the network side device, the terminal device uses an LBT (for example, the second type of LBT) whose duration is lower than the first threshold to compete for a channel, and then perform uplink transmission. The first transmission trigger information may be a specific random sequence, such as a synchronization sequence or a preamble sequence, which can trigger a COT transmission, so that the terminal device can perform uplink transmission in the first COT.
上述各信道占用参数的有效期均是从携带该信道占用参数的第一控制信息的发送时刻或结束时刻算起。The validity periods of the above-mentioned channel occupancy parameters are all calculated from the sending time or end time of the first control information carrying the channel occupancy parameters.
此外，在网络侧设备生成第一控制信息之前，网络侧设备还需要取得第一信道的控制权，取得该控制权的方式主要有以下两种：In addition, before the network-side device generates the first control information, the network-side device also needs to obtain the control right of the first channel. There are mainly two ways to obtain the control right:
A、由网络侧设备自行取得该控制权A. The network side device obtains the control right by itself
1、在所述网络侧设备进行下行传输之前，所述网络侧设备通过LBT竞争第一信道，成功竞争第一信道后，就可以通过竞争到的第一信道进行下行传输，同时也会生成上述第一控制信息，并下发给至少一个终端设备。1. Before the network-side device performs downlink transmission, the network-side device competes for the first channel through LBT. After successfully competing for the first channel, it can perform downlink transmission through the competed first channel, and at the same time generate the above-mentioned The first control information is issued to at least one terminal device.
2、在知晓终端设备有上行传输需求时，所述网络侧设备通过LBT竞争第一信道，成功竞争第一信道后，则可以生成上述第一控制信息，并将第一控制信息发给至少一个终端设备，以及向各个终端设备分别发送用于指示所述终端设备进行上行传输的上行发送授权信息，以使各终端设备在所述上行发送授权信息所指示的时频资源上进行上行发送。2. When knowing that the terminal device has an uplink transmission requirement, the network side device competes for the first channel through LBT, and after successfully competing for the first channel, it can generate the above-mentioned first control information, and send the first control information to at least one the terminal device, and respectively sending uplink transmission grant information for instructing the terminal device to perform uplink transmission to each terminal device, so that each terminal device performs uplink transmission on the time-frequency resource indicated by the uplink transmission grant information.
在网络侧设备将第一控制信息下发给各终端设备后，每个终端设备根据第一控制信息的指示内容，可以在网络侧设备触发的COT内，通过使用时长低于第一阈值的LBT竞争第一信道，然后再进行上行传输，网络侧设备所触发的一次COT传输内的时域单元结构图可以参考图2，i为正整数，各COT内传输的数据(Data)可包括上行数据和/或下行数据。After the network-side device sends the first control information to each terminal device, each terminal device can use the LBT whose duration is lower than the first threshold within the COT triggered by the network-side device according to the indication content of the first control information. Compete for the first channel, and then perform uplink transmission. The time domain unit structure diagram in a COT transmission triggered by the network side device can refer to Figure 2, i is a positive integer, and the data (Data) transmitted in each COT can include uplink data and/or downlink data.
B、由终端设备取得该控制权B. Obtain the control right by the terminal device
终端设备可通过LBT占用第一信道，取得第一信道的控制权，然后使用第一信道进行上行传输，相应的则会触发针对第一信道的一次信道占用。The terminal device can occupy the first channel through LBT, obtain the control right of the first channel, and then use the first channel for uplink transmission, and correspondingly trigger a channel occupation for the first channel.
终端设备在取得第一信道的控制权后，触发与该终端设备物理位置相邻的终端设备进行上行传输的情况主要包括下述(1)、(2)和(3)三种：After obtaining the control right of the first channel, the terminal device triggers the uplink transmission of the terminal device physically adjacent to the terminal device mainly includes the following three types: (1), (2) and (3):
(1)、该终端设备可以把第一信道的资源分配的权限转移给网络侧设备，使得网络侧设备可以对第一信道进行控制。在获得控制权后，网络侧设备首先生成上述第一控制信息，然后可在终端设备进行上行传输后的可以下行传输的时域单元内发送第一控制信息给各个终端设备。在上述(1)这种情况下，由于网络侧设备已经获得控制权，那么，接收到该第一控制信息的终端设备就可以使用时长低于第一阈值的LBT去竞争第一信道，对各个终端设备之间的物理位置不作要求，可以是彼此相邻，也可以不相邻。(1) The terminal device may transfer the resource allocation authority of the first channel to the network side device, so that the network side device can control the first channel. After obtaining the control right, the network-side device first generates the above-mentioned first control information, and then sends the first control information to each terminal device in the time domain unit that can transmit downlink after the terminal device performs uplink transmission. In the case of (1) above, since the network-side device has already obtained the control right, the terminal device that receives the first control information can use the LBT whose duration is lower than the first threshold to compete for the first channel. There is no requirement on the physical location between terminal devices, and they may or may not be adjacent to each other.
如图3所示，在终端设备触发COT传输的场景下，网络侧设备在获取信道的控制权后，下发控制信息的时间可以如图3所示，图3为终端设备触发的COTi内的时域单元结构，图3的DL Trigger则表示网络侧设备在该终端设备在起始上行传输后的第一个下行时域部分下发的第一控制信息，该DL Trigger中可以包含当前COTi的剩余时长的指示信息，COTi内传输的数据(Data)可包括上行数据和/或下行数据。As shown in Figure 3, in the scenario where the terminal device triggers COT transmission, after the network side device obtains the control right of the channel, the time for sending the control information can be shownin Figure 3. The DL Trigger in Figure 3 represents the first control information issued by the network side device in the first downlink time domain after the terminal device starts uplink transmission. The DL Trigger may contain the current COT Indication information of the remaining duration ofi , the data (Data) transmitted in COTi may include uplink data and/or downlink data.
(2)、该终端设备发送第二传输触发信息，从而触发与该终端设备物理位置相邻的终端设备进行上行传输，可通过类似发现信号的方式发送给与终端设备物理位置相邻的其他终端设备，第二传输触发信息可携带在该终端设备发送的上行信号中。(2) The terminal device sends the second transmission trigger information, thereby triggering the terminal device physically adjacent to the terminal device to perform uplink transmission, which can be sent to other terminals physically adjacent to the terminal device in a manner similar to a discovery signal device, the second transmission trigger information may be carried in an uplink signal sent by the terminal device.
(3)、该终端设备不发送第二传输触发信息，但与该终端设备物理位置相邻的终端设备将该终端设备的上行传输视为一次信道占用的触发，从而该终端设备的上行传输能够触发与该终端设备物理位置相邻的终端设备进行上行传输。(3) The terminal device does not send the second transmission trigger information, but the terminal device physically adjacent to the terminal device regards the uplink transmission of the terminal device as a trigger of channel occupation, so that the uplink transmission of the terminal device can Trigger a terminal device physically adjacent to the terminal device to perform uplink transmission.
在(3)情况下，如图4为终端设备触发的信道占用的至少一个COT内的时域单元结构，从左至右按照时域增序排列，图4为首个COT1内的时域单元结构，表示终端设备的起始上行传输，另一终端设备可以将图4中的终端设备的上行传输可以作为DL Trigger，在COT1内通过LBT来竞争信道，后续的终端设备触发COT传输同理，不再赘述。另一终端设备可以为多个终端设备，多个终端设备中的每个终端设备都可采用较短的LBT去竞争该信道可通过LBT竞争该信道，之后便可进行上行传输。In the case of (3), as shown in Figure 4, the time-domain unit structure in at least one COT occupied by the channel triggered by the terminal device is arranged in increasing order of time domain from left to right, and Figure 4 is the time-domain unit in the first COT1 The structure indicates the initial uplink transmission of the terminal device. Another terminal device can use the uplink transmission of the terminal device in Figure 4 as a DL Trigger, and compete for the channel through LBT in COT1. The subsequent terminal device triggers COT transmission in the same way. ,No longer. The other terminal device may be a plurality of terminal devices, and each of the multiple terminal devices may use a shorter LBT to compete for the channel, and then perform uplink transmission after competing for the channel through the LBT.
在上述(2)和(3)两种情况中，与该终端设备物理位置相邻的终端设备只需要使用时长低于第一阈值的LBT去竞争第一信道。In the above two cases (2) and (3), the terminal devices physically adjacent to the terminal device only need to use the LBT whose duration is lower than the first threshold to compete for the first channel.
对于上述终端设备触发的COT的场景，终端设备在至少一个第三COT内使用第一信道，将上行信号发送至所述网络侧设备，网络侧设备获得控制权后，另一终端设备也会接收到网络侧设备发送的第一控制信息，然后另一终端设备会在相应的至少一个第三COT内，通过时长低于第一阈值的LBT去竞争第一信道，并在上述终端设备触发的至少一个第三COT内进行上行发送和/或下行接收，另一终端设备所处的物理位置在前述终端设备附近。For the COT scenario triggered by the terminal device above, the terminal device uses the first channel in at least one third COT to send an uplink signal to the network-side device. After the network-side device obtains the control right, another terminal device will also receive The first control information sent by the network side device, and then another terminal device will compete for the first channel through LBT whose duration is lower than the first threshold in the corresponding at least one third COT, and at least Uplink transmission and/or downlink reception are performed in a third COT, and the physical location of another terminal device is near the foregoing terminal device.
从第一控制信息的作用可知，网络侧设备可以告知该终端设备后续每次传输所需的信道占用参数，那么该终端设备在进行上行传输时，还可以在传输的上行信号中携带第二传输触发信息，第二传输触发信息是指网络侧设备预先告知该终端设备后续传输的某些信道占用参数，在终端设备触发的COT传输场景中，可由终端设备将第二传输触发信息转发给其他终端设备。所述第二传输触发信息可用于通知网络侧设备和/或其他终端设备：将本次触发的至少一个第三COT中的每个COT内的第一个进行上行传输的终端设备的起始传输时刻作为上行触发时刻。或者，也可以不携带第二传输触发信息，对于终端设备主动发起的上行传输也可以起到第二传输触发信息的作用。可选的，若终端设备此次占用的信道和之前占用过的信道相同，由于每次占用信道会改变某些信道占用参数，那么该第二传输触发信息中的某些公共的信道占用参数仍然可以来自于网络侧设备之前下发的第一控制信息。From the function of the first control information, it can be known that the network side device can inform the terminal device of the channel occupancy parameters required for each subsequent transmission, then the terminal device can also carry the second transmission in the transmitted uplink signal when performing uplink transmission. Trigger information, the second transmission trigger information refers to certain channel occupancy parameters that the network side device notifies the terminal device in advance for subsequent transmission. In the COT transmission scenario triggered by the terminal device, the terminal device can forward the second transmission trigger information to other terminals equipment. The second transmission trigger information may be used to notify the network side device and/or other terminal devices: the first terminal device in each COT of the at least one third COT triggered this time to perform uplink transmission starts to transmit Time is used as the uplink trigger time. Alternatively, the second transmission trigger information may not be carried, and the uplink transmission initiated by the terminal device may also serve as the second transmission trigger information. Optionally, if the channel occupied by the terminal device this time is the same as the previously occupied channel, since certain channel occupation parameters will be changed each time the channel is occupied, then some common channel occupation parameters in the second transmission trigger information are still It may come from the first control information sent by the network side device before.
需要说明的是，终端设备竞争第一信道的情况主要分下述几类：It should be noted that the situations where terminal devices compete for the first channel are mainly divided into the following categories:
1、终端设备可以直接主动去竞争第一信道。1. The terminal device can directly and actively compete for the first channel.
2、在发生以下几种情况时，终端设备才主动去竞争第一信道，从而取得第一信道的控制权，例如在所述至少一个COT中的第二COT内用于传输信号的时域单元结构不存在下行时域部分时，或者在网络侧设备触发的COT(例如第一COT)内用于传输信号的时域单元结构中的下行时域部分无法用于第二传输触发信息时，终端设备都可以去竞争信道，或者当终端设备在网络侧设备触发的COT内无法完成上行传输时，该终端设备可以在当前网络侧设备触发的COT结束后，通过LBT竞争信道，并在竞争信道成功后进行上行传输，从而触发一次新的COT传输。2. When the following situations occur, the terminal device actively competes for the first channel, so as to obtain the control right of the first channel, for example, the time domain unit used to transmit signals in the second COT of the at least one COT When there is no downlink time domain part in the structure, or when the downlink time domain part in the time domain unit structure used to transmit signals in the COT (such as the first COT) triggered by the network side device cannot be used for the second transmission trigger information, the terminal All devices can compete for the channel, or when the terminal device cannot complete the uplink transmission within the COT triggered by the network side device, the terminal device can compete for the channel through LBT after the end of the COT triggered by the network side device, and succeed in competing for the channel Then perform uplink transmission, thus triggering a new COT transmission.
3、网络侧设备预先告知过终端设备后续传输所需的某些信道占用参数，那么，该终端设备能够通过LBT竞争信道，并在信道竞争成功后的上行传输中携带第二传输触发信息。3. The network side device notifies the terminal device in advance of certain channel occupancy parameters required for subsequent transmission, then the terminal device can compete for the channel through LBT, and carry the second transmission trigger information in the uplink transmission after the successful channel competition.
此外，对于终端设备触发的COT传输而言，终端设备需要通过时长高于第二阈值的LBT(例如第四类LBT)去竞争信道，才可以触发一次新的COT传输。在上行业务较多的场景下，如果各终端设备都自发的通过LBT竞争信道，这样会影响传输效率，所以为了保证多用户同时传输，可以对终端设备通过LBT去竞争信道进行限制。例如，可以对每个终端设备监听信道的随机退避时长进行规定，相应的，前述时长高于第二阈值的LBT的长度与所述终端设备监听信道时的随机退避时长相关，通过规定每个终端设备监听信道的随机退避时长，可以保证多用户同时传输有条不紊的进行，从而提高多用户同时传输的传输效率。In addition, for the COT transmission triggered by the terminal device, the terminal device needs to compete for the channel through an LBT (for example, the fourth type of LBT) whose duration is higher than the second threshold, before a new COT transmission can be triggered. In a scenario with many uplink services, if each terminal device competes for the channel through LBT spontaneously, this will affect the transmission efficiency. Therefore, in order to ensure simultaneous transmission of multiple users, the terminal device can be restricted from competing for the channel through LBT. For example, the random backoff duration of each terminal device monitoring the channel may be specified. Correspondingly, the length of the aforementioned LBT whose duration is higher than the second threshold is related to the random backoff duration when the terminal device monitors the channel. By specifying that each terminal The random backoff time of the device listening to the channel can ensure that the simultaneous transmission of multiple users is carried out in an orderly manner, thereby improving the transmission efficiency of simultaneous multi-user transmission.
在网络侧设备取得第一信道的控制权后，可以确定该第一信道的COT，然后生成控制信息发送给终端设备，在本次COT内首次发送的控制信息中指示的COT为整个信道的占用时长，在后续的数据传输中发送的控制信息中指示的信道占用时长则是指本次COT的剩余时长。另外，在一个COT内的每次数据传输所发送的控制信息的内容可相同或不同。After the network side device obtains the control right of the first channel, it can determine the COT of the first channel, and then generate control information and send it to the terminal device. The COT indicated in the control information sent for the first time in this COT is the occupation of the entire channel Duration, the channel occupancy duration indicated in the control information sent in the subsequent data transmission refers to the remaining duration of this COT. In addition, the content of the control information sent for each data transmission within a COT may be the same or different.
102、网络侧设备将第一控制信息发送给至少一个终端设备。102. The network side device sends the first control information to at least one terminal device.
其中，所述第一控制信息可以通过公共控制信令或终端设备专用控制信令或授权信道的下行控制信令发送，所述公共控制信令或终端设备专用控制信令或授权信道的下行控制信令包括控制字段，所述控制字段用于承载所述第一控制信息，该控制字段所承载的第一控制信息可以标记为DL Trigger。Wherein, the first control information may be sent through public control signaling or terminal equipment-specific control signaling or downlink control signaling of authorized channels, and the public control signaling or terminal equipment-specific control signaling or downlink control signaling of authorized channels The signaling includes a control field, where the control field is used to carry the first control information, and the first control information carried by the control field may be marked as DL Trigger.
第一控制信息可从所述第一COT的下行传输起始时刻发送，例如，在第一COT内用于传输信号的时域单元中的下行时域部分发送，或者在所述第一COT的起始时刻、或者在所述第一COT内的起始上行传输后的起始下行传输时刻发送、或者在所述第一COT内的起始上行传输后的起始下行时域部分发送。The first control information may be sent from the start moment of downlink transmission of the first COT, for example, in the downlink time domain part of the time domain unit used for transmitting signals in the first COT, or in the downlink time domain part of the first COT It is sent at the start time, or at the time of the start of downlink transmission after the start of uplink transmission in the first COT, or at the time domain part of the start of downlink transmission after the start of uplink transmission in the first COT.
以终端设备触发的一次COT传输场景为例，网络侧设备发送控制信息时可以采用起始上行自包含时域单元结构、下行时域单元结构或者下行自包含时域单元结构，具体可以参考图5，图5为至少一个COT内的时域单元结构，从左至右按照时域增序排列，图中的i为正整数，各COT内传输的数据(Data)可包括上行数据和/或下行数据。图5中的(a)为第i个COT内的时域单元结构(即下行时域单元结构)，在第i个COT内的DL Trigger是在LBT之后，以及下行数据传输之前，且DL Trigger指示的是COT的全部时长。Taking a COT transmission scenario triggered by a terminal device as an example, the network side device can use the initial uplink self-contained time domain unit structure, downlink time domain unit structure or downlink self-contained time domain unit structure when sending control information. For details, refer to Figure 5 , Figure 5 is a time-domain unit structure in at least one COT, which is arranged in increasing order in the time domain from left to right, i in the figure is a positive integer, and the data (Data) transmitted in each COT may include uplink data and/or downlink data. (a) in Figure 5 is the time-domain unit structure in the i-th COT (that is, the downlink time-domain unit structure). The DL Trigger in the i-th COT is after the LBT and before the downlink data transmission, and the DL Trigger Indicated is the total duration of the COT.
图5中的(b)为第i+1个COT内的时域单元结构(即起始上行自包含时域单元结构)，图5中的(b)的DL Trigger则表示网络侧设备在该终端设备在起始上行传输后的第一个下行时域部分下发的控制信息，且DL Trigger指示的是COT的剩余时长。当然，在每个COT内发送控制信息的时域位置可以根据时域单元的结构而变化。(b) in Figure 5 is the time domain unit structure in the i+1th COT (that is, the initial uplink self-contained time domain unit structure), and the DL Trigger in Figure 5 (b) indicates that the network side device is in the The control information sent by the terminal device in the first downlink time domain after the start of uplink transmission, and the DL Trigger indicates the remaining duration of the COT. Of course, the time domain position where the control information is transmitted within each COT may vary according to the structure of the time domain unit.
另外，由于DL trigger中传递的信息会包括一个COT内最基本的信道占用参数，那么，可以采用一种默认的时频结构来传输DL trigger，使得更多的终端设备能够听懂该DLtrigger，例如，用于传输DL trigger的信道的频域位置和子载波间隔预先配置为固定值，也可以将对DL trigger携带在周期性的发现信号(英文全称：Discovery Signal，英文简称：DRS)所在的时域单元中，或携带在系统广播消息中，或者还可以通过授权信道的下行控制信令来指示。In addition, since the information transmitted in the DL trigger includes the most basic channel occupancy parameters in the COT, a default time-frequency structure can be used to transmit the DL trigger, so that more terminal devices can understand the DL trigger, for example , the frequency domain position and subcarrier spacing of the channel used to transmit the DL trigger are pre-configured as fixed values, and the DL trigger can also be carried in the time domain where the periodic discovery signal (English full name: Discovery Signal, English abbreviation: DRS) is located unit, or carried in the system broadcast message, or can also be indicated through the downlink control signaling of the authorized channel.
上述至少一个终端设备可包括使用相同时域资源且不同频域资源的至少一个终端设备，可以包括使用不同时域资源且相同频域资源的至少一个终端设备，还可以包括使用不同时域资源且不同频域资源的至少一个终端设备。使用相同时域资源的终端设备则在相同的至少一个COT内相同的上行时域部分进行上行传输。The above at least one terminal device may include at least one terminal device using the same time domain resources and different frequency domain resources, may include at least one terminal device using different time domain resources and the same frequency domain resources, and may also include using different time domain resources and At least one terminal device of different frequency domain resources. Terminal devices using the same time domain resources perform uplink transmission in the same uplink time domain part in the same at least one COT.
需要说明的是，本发明中，网络侧设备还可以在一个COT内继续发送第一控制信息，避免有的终端设备在初始化信道时未监听到该第一控制信息。It should be noted that, in the present invention, the network side device can also continue to send the first control information within one COT, so as to prevent some terminal devices from not listening to the first control information when initializing the channel.
103、所述至少一个终端设备与所述网络侧设备根据所述第一控制信息在所述至少一个COT内进行通信。103. The at least one terminal device communicates with the network side device in the at least one COT according to the first control information.
至少一个终端设备中的每个终端设备都可以接收到该第一控制信息，该控制信息可以在初始下发时同时发给至少一个终端设备，还可以在后续的通信交互中，可以以广播消息或者周期信号等方式发给至少一个终端设备。Each of the at least one terminal device can receive the first control information, and the control information can be sent to at least one terminal device at the same time when it is initially delivered, and can also be broadcast in the form of a message in subsequent communication interactions Or send it to at least one terminal device by means of a periodic signal or the like.
若在所述第一COT内所述终端设备未完成上行传输，那么网络侧设备还可以重新确定使用所述第一信道的至少一个COT，然后将相应的控制信息发送给上述至少一个终端设备，该控制信息为本次确定的至少一个COT内的信道占用参数，使得上述至少一个终端设备根据该控制信息，在本次确定的至少一个COT内与网络侧设备进行通信。该控制信息可以与之前的第一控制信息相同或不同，可以是针对相同的信道(第一信道)或不同的信道(其他信道)的信道占用参数，具体携带的各信道占用参数本发明不作限定。If the terminal device has not completed uplink transmission in the first COT, the network side device may also re-determine at least one COT using the first channel, and then send corresponding control information to the at least one terminal device, The control information is the channel occupancy parameter in at least one COT determined this time, so that the at least one terminal device communicates with the network side device in the at least one COT determined this time according to the control information. The control information may be the same as or different from the previous first control information, and may be channel occupancy parameters for the same channel (first channel) or different channels (other channels), and the specific channel occupancy parameters carried are not limited in the present invention .
此外，在上述终端设备在自身所触发的COT内进行上行传输，也可以在另一终端设备所触发的COT内进行上行传输，具体的另一种终端设备触发COT传输的流程与前述部分描述的由上述终端设备获取第一信道的控制权，以触发一次新的COT传输流程相同，具体不再赘述。相应的，在另一终端设备触发针对第二信道的一次COT传输后，另一终端设备同样会将第二信道的控制权转移给网络侧设备，网络侧设备则会生成一个相应的第二控制信息，然后将第二控制信息下发给各终端设备(包括上述终端设备和另一终端设备)，第二控制信息所携带的信道占用参数可参考第一控制信息的说明，此处不再赘述。那么，上述终端设备在接收到该第二控制信息后，可以根据该第二控制信息指示的至少一个第四COT内的信道占用参数，在第二控制信息指示的至少一个第四COT内，与网络侧设备进行通信。In addition, the above-mentioned terminal device performs uplink transmission in the COT triggered by itself, and can also perform uplink transmission in the COT triggered by another terminal device. The specific process of another terminal device triggering COT transmission is the same as that described in the previous section. The process of obtaining the control right of the first channel by the above-mentioned terminal device to trigger a new COT transmission is the same, and details will not be repeated here. Correspondingly, after another terminal device triggers a COT transmission for the second channel, the other terminal device will also transfer the control right of the second channel to the network-side device, and the network-side device will generate a corresponding second control information, and then send the second control information to each terminal device (including the above-mentioned terminal device and another terminal device), the channel occupancy parameters carried in the second control information can refer to the description of the first control information, and will not be repeated here . Then, after receiving the second control information, the terminal device may, according to the channel occupancy parameters in at least one fourth COT indicated by the second control information, communicate with Network-side devices communicate.
与现有机制相比，本发明实施例中，网络侧设备将用于指示至少一个COT内的信道占用参数的第一控制信息发送给至少一个终端设备，既减少了动态通知信道占用参数的信令开销，又使得终端设备能够知晓信道占用期间的信道占用配置全貌，然后根据第一控制信息所提供的更细粒度的信道占用参数，灵活调整对下行信道的监听，从而有利于终端设备减少对下行信道的监听，相应降低终端设备的功耗。Compared with the existing mechanism, in the embodiment of the present invention, the network side device sends the first control information for indicating the channel occupancy parameter in at least one COT to at least one terminal device, which reduces the information required for dynamically notifying the channel occupancy parameter. In addition, the terminal device can know the overall picture of the channel occupancy configuration during the channel occupancy period, and then flexibly adjust the monitoring of the downlink channel according to the finer-grained channel occupancy parameters provided by the first control information. The monitoring of the downlink channel reduces the power consumption of the terminal equipment accordingly.
在存在多个小区时，若该终端设备接收到其他小区COT内的信道占用参数时，那么为减少传输干扰或者信道资源占用冲突，该终端设备可以根据这些信道占用参数来判断自己在一个COT内的哪些时域单元可以不进行上行传输，等待该COT结束之后，再进行LBT触发一个新的COT。When there are multiple cells, if the terminal device receives channel occupancy parameters in the COT of other cells, then in order to reduce transmission interference or channel resource occupation conflicts, the terminal device can judge that it is in a COT according to these channel occupancy parameters. Which of the time domain units may not perform uplink transmission, wait for the end of the COT, and then perform LBT to trigger a new COT.
相应的，在存在多个小区时，若网络侧设备接收到其他小区COT内的信道占用参数时，那么为减少传输干扰或者信道资源占用冲突，网络侧设备可以根据这些信道占用参数来判断自己在一个COT内的哪些时域单元可以去占用该信道资源，可以等待该COT结束之后，再进行LBT占用信道。Correspondingly, when there are multiple cells, if the network side device receives the channel occupancy parameters in the COT of other cells, then in order to reduce transmission interference or channel resource occupancy conflicts, the network side device can judge itself according to these channel occupancy parameters. Which time-domain units in a COT can occupy the channel resources can wait for the end of the COT before performing LBT to occupy the channel.
以上对本发明中一种非授权频谱占用的方法进行说明，以下对执行上述方法的网络侧设备和终端设备分别进行描述。上述图1-图5所示的任意方案中关于信道占用参数，第一控制信息和第二控制信息的发送时刻、发送方式和控制作用，第一传输触发信息，第二传输触发信息等均可适用于下述网络侧设备60和终端设备70，后续均不再赘述。A method for occupying an unlicensed spectrum in the present invention is described above, and the network-side device and the terminal device that execute the above method are respectively described below. In any of the schemes shown in Figures 1 to 5 above, the channel occupancy parameters, the sending time, sending method and control function of the first control information and the second control information, the first transmission trigger information, the second transmission trigger information, etc. can all be It is applicable to the network side device 60 and the terminal device 70 described below, and details will not be repeated hereafter.
一、参照图6，对网络侧设备60进行说明，网络侧设备60包括：1. Referring to FIG. 6, the network side device 60 is described, and the network side device 60 includes:
处理模块601，用于生成第一控制信息，所述第一控制信息用于指示至少一个COT内的信道占用参数；A processing module 601, configured to generate first control information, where the first control information is used to indicate channel occupancy parameters in at least one COT;
收发模块602，用于将第一控制信息发送给至少一个终端设备，以使所述至少一个终端设备根据所述第一控制信息，与所述网络侧设备在所述至少一个COT内进行通信。The transceiver module 602 is configured to send first control information to at least one terminal device, so that the at least one terminal device communicates with the network side device in the at least one COT according to the first control information.
二、参照图7，对终端设备70进行说明，终端设备70包括：2. Referring to FIG. 7, the terminal device 70 is described, and the terminal device 70 includes:
收发模块701，用于接收网络侧设备发送的第一控制信息，所述第一控制信息用于指示至少一个COT内的信道占用参数；A transceiver module 701, configured to receive first control information sent by a network side device, where the first control information is used to indicate channel occupancy parameters in at least one COT;
处理模块702，用于根据所述收发模块701接收到的所述第一控制信息，利用所述收发模块在所述至少一个COT内与所述网络侧设备进行通信。The processing module 702 is configured to use the transceiver module to communicate with the network side device in the at least one COT according to the first control information received by the transceiver module 701 .
所述处理模块702还用于使用时长高于第二阈值的LBT竞争信道；The processing module 702 is further configured to use an LBT contention channel whose duration is higher than a second threshold;
时长高于第二阈值的LBT的长度与所述终端设备监听信道时的随机退避时长相关。The length of the LBT whose duration is higher than the second threshold is related to the random backoff duration when the terminal device monitors the channel.
在一些发明实施例中，所述处理模块702还用于：In some invention embodiments, the processing module 702 is also used to:
在所述至少一个COT中的第二COT内用于传输信号的时域单元结构不存在下行时域部分时，或者在所述第一COT内用于传输信号的时域单元结构中的下行时域部分无法用于第二传输触发信息时，在至少一个第三COT内使用所述信道或另一信道，利用所述收发模块701将上行信号发送至所述网络侧设备，以使另一终端设备使用时长低于第一阈值的LBT竞争所述信道或所述另一信道，并在所述至少一个第三COT内进行上行传输。When there is no downlink time domain part in the time domain unit structure used for transmitting signals in the second COT of the at least one COT, or when there is a downlink in the time domain unit structure used for transmitting signals in the first COT When the domain part cannot be used for the second transmission trigger information, use the channel or another channel in at least one third COT, and use the transceiver module 701 to send an uplink signal to the network side device, so that another terminal The device competes for the channel or the other channel by using the LBT whose duration is shorter than the first threshold, and performs uplink transmission in the at least one third COT.
其中，所述上行信号携带所述第二传输触发信息，所述第二传输触发信息用于通知所述网络侧设备和/或所述另一终端设备：将所述至少一个第三COT中的每个COT内的第一个进行上行传输的所述终端设备的起始传输时刻作为上行触发时刻。Wherein, the uplink signal carries the second transmission trigger information, and the second transmission trigger information is used to notify the network side device and/or the other terminal device: to transfer the at least one third COT The start transmission time of the first terminal device performing uplink transmission in each COT is used as the uplink trigger time.
在一些发明实施例中，所述处理模块702还用于：In some invention embodiments, the processing module 702 is also used to:
利用所述收发模块接收所述网络侧设备发送的第二控制信息，第二控制信息指示所述另一终端设备触发的至少一个第四COT内的信道占用参数；Using the transceiver module to receive second control information sent by the network side device, the second control information indicates channel occupancy parameters in at least one fourth COT triggered by the other terminal device;
根据所述收发模块701接收到的所述第二控制信息指示的所述至少一个第四COT内的信道占用参数，利用所述收发模块701在所述第二控制信息指示的所述至少一个第四COT内与所述网络侧设备进行通信。According to the channel occupancy parameters in the at least one fourth COT indicated by the second control information received by the transceiver module 701, the at least one fourth COT indicated by the second control information is used by the transceiver module 701 The four COTs communicate with the network side device.
需要说明的是，在本发明各实施例(包括图6以及图7所示的各实施例)中所有的收发模块对应的实体设备可以为收发器，所有的处理模块对应的实体设备可以为处理器。图6以及图7所示的各装置均可以具有如图8所示的结构，当其中一种装置具有如图8所示的结构时，图8中的处理器和收发器能够实现前述对应该装置的装置实施例提供的处理模块和收发模块相同或相似的功能，图8中的存储器存储处理器执行上述非授权频谱占用的方法时需要调用的程序代码。It should be noted that, in each embodiment of the present invention (including the embodiments shown in FIG. 6 and FIG. 7 ), the physical devices corresponding to all the transceiver modules may be transceivers, and the physical devices corresponding to all the processing modules may be processing device. Each of the devices shown in Figure 6 and Figure 7 can have the structure shown in Figure 8, when one of the devices has the structure shown in Figure 8, the processor and transceiver in Figure 8 can achieve the aforementioned corresponding The processing module provided by the device embodiment of the device has the same or similar functions as the transceiver module, and the memory in FIG. 8 stores the program code that needs to be called when the processor executes the above method of unlicensed spectrum occupation.
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.
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，装置和模块的具体工作过程，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 the description, the specific working process of the above-described system, device and module can refer to the corresponding process in the foregoing method embodiment, which 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仅是示意性的，例如，所述模块的划分，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，例如多个模块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，装置或模块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 system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
另外，在本发明各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
所述集成的模块如果以软件功能模块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，本发明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全部或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)执行本发明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(英文全称：Read-OnlyMemory，英文简称：ROM)、随机存取存储器(英文全称：Random Access Memory，英文简称：RAM)、磁碟或者光盘等各种可以存储程序代码的介质。If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (English full name: Read-Only Memory, English abbreviation: ROM), random access memory (English full name: Random Access Memory, English abbreviation: RAM), disk Or various media such as CDs that can store program codes.
以上对本发明所提供的技术方案进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。The technical solution provided by the present invention has been introduced in detail above, and the principles and implementation methods of the present invention have been explained by using specific examples in this paper. The description of the above embodiments is only used to help understand the method and core idea of the present invention; At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.
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