技术领域technical field
本发明涉及移动通信领域，并且更具体地，涉及移动通信领域中传输下行控制信息的方法、接入设备、用户设备和系统。The present invention relates to the field of mobile communication, and more specifically, to a method, access device, user equipment and system for transmitting downlink control information in the field of mobile communication.
背景技术Background technique
在3GPP(3rdGenerationPartnershipProject，第三代合作伙伴计划)网络中，基站可以通过控制信道区域来传输下行控制信令。下行控制信令可以分为小区专用(Cell-Specific)部分和用户设备专用(UE-Specific)部分，在用户设备专用部分中包含发送给用户设备(UserEquipment，UE)的下行控制信息(DownlinkControlInformation，DCI)。UE通过发送给自己的DCI可以确定分配给自己的PDSCH(PhysicalDownlinkSharedChannel，物理下行共享信道)信道，从而在PDSCH信道上接收业务数据。In a 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) network, a base station can transmit downlink control signaling through a control channel region. The downlink control signaling can be divided into a cell-specific (Cell-Specific) part and a user equipment-specific (UE-Specific) part, and the user equipment-specific part includes downlink control information (Downlink Control Information, DCI) sent to the user equipment (User Equipment, UE) ). The UE can determine a PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) channel allocated to itself through the DCI sent to the UE, so as to receive service data on the PDSCH channel.
随着小区内UE数量的增加，控制信道区域上承载的DCI逐渐增加，这对于控制信道容量构成了极大的挑战。有限的控制信道容量使得不能有效承载过多的DCI，从而影响UE对DCI的获取。With the increase of the number of UEs in the cell, the DCI carried on the control channel area gradually increases, which poses a great challenge to the control channel capacity. Limited control channel capacity makes it impossible to effectively carry too much DCI, thereby affecting the UE's acquisition of DCI.
发明内容Contents of the invention
本发明实施例提供了用于传输下行控制信息的方法、接入设备、用户设备和系统，能够解决在传输DCI时控制信道容量受限的问题，使得DCI的传输不会因为控制信道容量的制约而受到限制，从而可以在控制信道区域上降低UE控制信令的开销。Embodiments of the present invention provide a method, access device, user equipment, and system for transmitting downlink control information, which can solve the problem of limited control channel capacity when transmitting DCI, so that the transmission of DCI will not be restricted by the capacity of the control channel are limited, so that the overhead of UE control signaling can be reduced in the control channel region.
一方面，本发明实施例提供了一种用于传输下行控制信息的方法，包括：在将同一小区的用户设备UE划分为至少一个UE组的情况下，为至少一个UE组中的一个UE组分配控制信道区域之外的资源区域；通过控制信道区域向该UE组发送UE组专用多播下行控制信息UM-DCI，以使该UE组基于UM-DCI确定资源区域；通过资源区域向该UE组发送下行控制信息DCI。On the one hand, an embodiment of the present invention provides a method for transmitting downlink control information, including: when user equipment UEs in the same cell are divided into at least one UE group, for one UE group in the at least one UE group Allocate a resource area outside the control channel area; send UE group-specific multicast downlink control information UM-DCI to the UE group through the control channel area, so that the UE group determines the resource area based on the UM-DCI; send the UE group through the resource area The group sends downlink control information DCI.
另一方面，本发明实施例提供了一种用于传输下行控制信息的方法，包括：在将同一小区的用户设备UE划分为至少一个UE组的情况下，确定所属的UE组；在控制信道区域上接收基站发送的该UE组的UE组专用多播下行控制信息UM-DCI；基于UM-DCI，确定基站在控制信道区域之外为该UE组分配的资源区域；在资源区域上接收基站发送的下行控制信息DCI。On the other hand, an embodiment of the present invention provides a method for transmitting downlink control information, including: when user equipment UEs in the same cell are divided into at least one UE group, determine the UE group to which they belong; Receive the UE group-specific multicast downlink control information UM-DCI sent by the base station in the area; based on the UM-DCI, determine the resource area allocated by the base station for the UE group outside the control channel area; receive the base station in the resource area The sent downlink control information DCI.
再一方面，本发明实施例提供了一种接入设备，包括：分配模块，用于在将同一小区的用户设备UE划分为至少一个UE组的情况下，为至少一个UE组中的一个UE组分配控制信道区域之外的资源区域；第一发送模块，用于通过控制信道区域向该UE组发送UE组专用多播下行控制信息UM-DCI，以使该UE组基于UM-DCI确定资源区域；第二发送模块，用于通过资源区域向该UE组发送下行控制信息DCI。In yet another aspect, an embodiment of the present invention provides an access device, including: an allocation module configured to assign a UE in at least one UE group when user equipment UEs in the same cell are divided into at least one UE group The group allocates a resource area outside the control channel area; the first sending module is configured to send UE group-specific multicast downlink control information UM-DCI to the UE group through the control channel area, so that the UE group determines resources based on the UM-DCI area; a second sending module, configured to send downlink control information DCI to the UE group through the resource area.
又一方面，本发明实施例提供了一种用户设备，包括：第一确定模块，用于在将同一小区的用户设备UE划分为至少一个UE组的情况下，确定所属的UE组；第一接收模块，用于在控制信道区域上接收基站发送的该UE组的UE组专用多播下行控制信息UM-DCI；第二确定模块，用于基于UM-DCI，确定基站在控制信道区域之外为该UE组分配的资源区域；第二接收模块，用于在资源区域上接收基站发送的下行控制信息DCI。In yet another aspect, an embodiment of the present invention provides a user equipment, including: a first determining module, configured to determine the UE group to which it belongs when the user equipment UE in the same cell is divided into at least one UE group; The receiving module is configured to receive the UE group-specific multicast downlink control information UM-DCI of the UE group sent by the base station in the control channel area; the second determining module is configured to determine that the base station is outside the control channel area based on the UM-DCI A resource area allocated for the UE group; a second receiving module, configured to receive downlink control information DCI sent by the base station on the resource area.
又一方面，本发明实施例提供了一种用于传输下行控制信息的系统，该系统包括接入设备和用户设备。接入设备用于在将同一小区的用户设备UE划分为至少一个UE组的情况下，为至少一个UE组中的一个UE组分配控制信道区域之外的资源区域；通过控制信道区域向该UE组发送UE组专用多播下行控制信息UM-DCI；通过资源区域向该UE组发送下行控制信息DCI。用户设备用于在将同一小区的UE划分为至少一个UE组的情况下，确定所属的UE组；在控制信道区域上接收接入设备发送的该UE组的UE组专用多播下行控制信息UM-DCI；基于该UM-DCI，确定接入设备在控制信道区域之外为该UE组分配的资源区域；在该资源区域上接收接入设备发送的下行控制信息DCI。In yet another aspect, an embodiment of the present invention provides a system for transmitting downlink control information, and the system includes an access device and a user equipment. The access device is used to allocate a resource area outside the control channel area to one UE group in the at least one UE group when the user equipment UE in the same cell is divided into at least one UE group; to the UE through the control channel area The group sends the UE group-specific multicast downlink control information UM-DCI; sends the downlink control information DCI to the UE group through the resource area. The user equipment is used to determine the UE group to which it belongs when the UEs in the same cell are divided into at least one UE group; receive the UE group-specific multicast downlink control information UM of the UE group sent by the access device on the control channel area -DCI: Based on the UM-DCI, determine the resource area allocated by the access device for the UE group outside the control channel area; receive downlink control information DCI sent by the access device on the resource area.
基于上述技术方案，通过将同一小区中的UE分为不同的UE组，可以将发送给同一UE组的DCI承载在控制信道区域之外的资源区域上传输，使得DCI无需如相关技术那样受限在有限容量的控制信道区域上传输。从而，DCI可以占用更多的信道资源，DCI的传输不会因为控制信道容量的制约而受到限制，因此可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过在控制信道区域传输指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。Based on the above technical solution, by dividing the UEs in the same cell into different UE groups, the DCI sent to the same UE group can be transmitted on the resource area outside the control channel area, so that the DCI does not need to be restricted as in the related art Transmission on a limited-capacity control channel region. Therefore, DCI can occupy more channel resources, and the transmission of DCI will not be limited due to the restriction of control channel capacity, so the overhead of UE control signaling can be reduced in the control channel area, thereby increasing the capacity of the control channel. In addition, by transmitting the control information indicating the resource area in the control channel area, it is beneficial to save the extra overhead caused by using high-layer signaling to indicate the resource area.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without any creative work.
图1是根据本发明实施例的用于传输DCI的方法的流程图。Fig. 1 is a flowchart of a method for transmitting DCI according to an embodiment of the present invention.
图2是根据本发明实施例的通过控制信道区域向UE组发送UM-DCI(UEgroupspecificMulticast-DCI，UE组专用组播DCI)的方法的流程图。FIG. 2 is a flow chart of a method for sending UM-DCI (UEgroup specific Multicast-DCI, UE group-specific multicast DCI) to a UE group through a control channel region according to an embodiment of the present invention.
图3是根据本发明实施例的通过资源区域向UE组发送DCI的方法的流程图。Fig. 3 is a flowchart of a method for sending DCI to a UE group through a resource region according to an embodiment of the present invention.
图4是根据本发明实施例的通过资源区域向UE组发送DCI的另一方法的流程图。Fig. 4 is a flowchart of another method for sending DCI to a UE group through a resource region according to an embodiment of the present invention.
图5是根据本发明实施例的为不同UE组分配的承载DCI的资源区域的分布例子的示意图。Fig. 5 is a schematic diagram of a distribution example of DCI-carrying resource regions allocated for different UE groups according to an embodiment of the present invention.
图6是根据本发明实施例的加扰处理的示意图。Fig. 6 is a schematic diagram of scrambling processing according to an embodiment of the present invention.
图7是根据本发明实施例的用于传输DCI的再一方法的流程图。Fig. 7 is a flow chart of still another method for transmitting DCI according to an embodiment of the present invention.
图8是根据本发明实施例的接入设备的结构框图。Fig. 8 is a structural block diagram of an access device according to an embodiment of the present invention.
图9是根据本发明实施例的另一接入设备的结构框图。Fig. 9 is a structural block diagram of another access device according to an embodiment of the present invention.
图10是根据本发明实施例的用户设备的结构框图。Fig. 10 is a structural block diagram of user equipment according to an embodiment of the present invention.
图11是根据本发明实施例的用于传输DCI的系统的结构框图。Fig. 11 is a structural block diagram of a system for transmitting DCI according to an embodiment of the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的所述实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。The following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
首先，结合图1描述根据本发明实施例的用于传输DCI的方法100。First, a method 100 for transmitting DCI according to an embodiment of the present invention is described with reference to FIG. 1 .
如图1所示，方法100包括：在S110中，在将同一小区的UE划分为至少一个UE组的情况下，为至少一个UE组中的一个UE组分配控制信道区域之外的资源区域；在S120中，通过控制信道区域向该UE组发送UE组专用多播下行控制信息UM-DCI，以使该UE组基于UM-DCI确定资源区域；在S130中，通过资源区域向该UE组发送下行控制信息DCI。As shown in FIG. 1, the method 100 includes: in S110, in the case of dividing UEs in the same cell into at least one UE group, assigning a resource area outside the control channel area to one UE group in the at least one UE group; In S120, the UE group-specific multicast downlink control information UM-DCI is sent to the UE group through the control channel region, so that the UE group determines the resource region based on the UM-DCI; in S130, the resource region is sent to the UE group Downlink control information DCI.
通过将同一小区中的UE分为不同的UE组，以UE组为单位，将发送给同一UE组的DCI承载在控制信道区域之外的资源区域上传输，并利用在控制信道区域上传输的UM-DCI指示该资源区域以便UE组正确接收DCI。By dividing the UEs in the same cell into different UE groups, taking the UE group as a unit, the DCI sent to the same UE group is transmitted on the resource area outside the control channel area, and the DCI transmitted on the control channel area is used. The UM-DCI indicates this resource region so that the UE group receives the DCI correctly.
这样，DCI无需如相关技术那样受限在有限容量的控制信道区域上传输，从而使得DCI可以占用更多的信道资源，DCI的传输不会因为控制信道区域内控制信道容量的制约而受到限制，因此可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过在控制信道区域传输指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。In this way, DCI does not need to be restricted to be transmitted in a limited-capacity control channel area as in the related art, so that DCI can occupy more channel resources, and the transmission of DCI will not be limited due to the restriction of the control channel capacity in the control channel area. Therefore, the overhead of UE control signaling can be reduced in the control channel region, thereby increasing the capacity of the control channel. In addition, by transmitting the control information indicating the resource area in the control channel area, it is beneficial to save the extra overhead caused by using high-layer signaling to indicate the resource area.
例如，方法100可以由基站执行。基站可以是传统意义上的基站，也可以是LTE(LongTermEvolution，长期演进)系统中的eNB(EvolvedNodeB，演进型基站)等，还可以在未来出现的控制UE无线接入并与UE进行无线通信的其他接入设备等。For example, method 100 may be performed by a base station. The base station can be a base station in the traditional sense, or an eNB (EvolvedNodeB, evolved base station) in the LTE (Long Term Evolution, long-term evolution) system, etc., and can also control UE wireless access and perform wireless communication with UE in the future. other access devices, etc.
在S110中，可以通过多种方式将同一小区中的UE分为至少一个UE组。UE可以基于基站发送的高层消息来获知自己所属的UE组，也可以根据预定配置来获知自己所属的UE组。基于分组的思想，可以便于基站将发送给同一组内的UE的DCI聚合在一起进行传输。In S110, the UEs in the same cell can be divided into at least one UE group in multiple ways. The UE can learn the UE group to which it belongs based on a high-layer message sent by the base station, or can learn the UE group to which it belongs according to a predetermined configuration. Based on the concept of grouping, it is convenient for the base station to aggregate and transmit DCIs sent to UEs in the same group.
根据本发明的一个实施例，可以将选择相同发射点的UE划分为一个UE组。发射点可以是基站，也可以是基站的RRH(RemoteRadioHead，射频拉远头)。同一UE组的UE可以从相同的一个或多个基站接受服务，也可以从相同的一个或多个RRH接受服务，还可以从相同的一个或多个基站、并从相同的一个或多个RRH接受服务。According to an embodiment of the present invention, UEs that select the same transmission point can be divided into a UE group. The transmission point may be a base station, or an RRH (RemoteRadioHead, remote radio head) of the base station. UEs in the same UE group may receive services from the same one or more base stations, or receive services from the same one or more RRHs, or receive services from the same one or more base stations, and from the same one or more RRHs accept service.
例如，在LTER11CoMPScenario4(LongTermEvolutionRelease11CoordinatedMulti-PointScenario4，长期演进版本11协作多点传输方案4)场景下，在一个宏基站区域内的所有包括RRH的传输点都共享同一小区ID。假设在一个小区内共有n个发射点(发射点可以是宏基站，也可以是RRH)，如果用TX代表发射点，则一个小区中的n个发射点可以分别记为TX0、TX1、......、TX(n-1)。如果以选择相同发射点的UE为一组，那么在该小区中一共可以至多存在2n-1个UE组。也就是，假设用预编码向量(1，0，1，......，1)表示选择TX0、TX2、......、TX(n-1)的UE，则所有可能存在的UE组可以构成如下集合：For example, in an LTER11CoMPScenario4 (LongTermEvolutionRelease11CoordinatedMulti-PointScenario4, long-term evolution version 11 coordinated multi-point transmission scheme 4) scenario, all transmission points including RRHs in a macro base station area share the same cell ID. Assuming that there are n transmission points in a cell (the transmission point can be a macro base station or RRH), if TX is used to represent the transmission point, then the n transmission points in a cell can be respectively recorded as TX0 , TX1 , ......,TX(n-1) . If UEs that select the same transmission point are used as a group, there may be at most 2n −1 UE groups in the cell. That is, assuming that the precoding vector (1, 0, 1, ..., 1) is used to represent the UE that selects TX0 , TX2 , ..., TX(n-1) , then all Possible UE groups may form the following sets:
其中，集合中每个向量代表一个UE组，每个向量中的元素分别代表是否选择相应的发射点。例如，当向量中第一个元素取1时代表选择TX0，第一个元素取0时代表没有选择TX0。Wherein, each vector in the set represents a UE group, and elements in each vector respectively represent whether to select a corresponding transmission point. For example, when the first element in the vector is 1, it means that TX0 is selected, and when the first element is 0, it means that TX0 is not selected.
根据本发明的一个实施例，可以将反馈相同PMI(PrecodingMatrixIndicator，预编码矩阵指示)的UE划分为一个组。由于UE会向基站上报自己的PMI，所以基站可以将使用相同PMI的UE分为一个组。According to an embodiment of the present invention, UEs that feed back the same PMI (PrecodingMatrixIndicator, precoding matrix indication) can be divided into one group. Since the UE will report its own PMI to the base station, the base station can divide UEs using the same PMI into a group.
根据本发明的一个实施例，可以将每个UE单独作为一个UE组。此时，小区内的UE组的数量与UE数相同。当然，本领域技术人员还可以想到其他划分UE组的方式。According to an embodiment of the present invention, each UE can be individually regarded as a UE group. At this time, the number of UE groups in the cell is the same as the number of UEs. Of course, those skilled in the art can also think of other manners of dividing UE groups.
对于某个UE组而言，基站可以为该UE组分配控制信道区域之外的资源区域，在该资源区域上承载DCI。从而，原本在控制信道区域上传输的DCI在控制信道区域之外的资源区域上传输，使得可以减小控制信道区域内控制信道的开销，提高控制信道的容量。For a certain UE group, the base station may allocate a resource area outside the control channel area for the UE group, and DCI is carried on the resource area. Therefore, the DCI originally transmitted in the control channel region is transmitted in the resource region outside the control channel region, so that the overhead of the control channel in the control channel region can be reduced and the capacity of the control channel can be increased.
控制信道区域可以是传统LTER8下定义的控制信道区域，从相关技术来看DCI被限定在控制信道区域内传输。本领域技术人员也可以想到，在非LTE系统演进的路线上，控制信道区域也可以是其他标准规定来传输控制信息的区域。The control channel area may be the control channel area defined under the traditional LTE 8. From the perspective of related technologies, DCI is limited to be transmitted in the control channel area. Those skilled in the art can also conceive that, on the evolution route of the non-LTE system, the control channel area may also be an area specified by other standards to transmit control information.
例如，可以为UE组分配数据信道区域内的资源区域。当将基站可使用的资源划分为控制信道区域和数据信道区域两部分时，数据信道区域可以是基站使用来传输业务数据的区域，在该区域内通常包括PDSCH信道以传输业务数据。由于在数据信道区域内基站可以灵活地进行资源分配，因此可以容易地在数据信道区域内分配承载DCI的资源区域。For example, a resource region within a data channel region may be allocated for a group of UEs. When the resources available to the base station are divided into two parts, the control channel area and the data channel area, the data channel area may be the area used by the base station to transmit service data, and PDSCH channels are usually included in this area to transmit service data. Since the base station can flexibly allocate resources in the data channel area, it is easy to allocate the resource area bearing DCI in the data channel area.
当然，由于在未来可能出现除了控制信道区域和数据信道区域之外的其他区域，例如控制信道和数据信道可以共用的区域、专用于某特定信息传输的专用区域等，也可以在这些区域内分配资源区域来传输DCI。通过将DCI承载在控制信道区域之外的资源区域上传输，可以实现控制信道开销的减小，从而使控制信道的容量增加。Of course, since other areas besides the control channel area and the data channel area may appear in the future, such as an area where the control channel and data channel can be shared, a dedicated area dedicated to a specific information transmission, etc., it can also be allocated in these areas. Resource area to transmit DCI. By transmitting the DCI on a resource area other than the control channel area, the overhead of the control channel can be reduced, thereby increasing the capacity of the control channel.
根据本发明的一个实施例，基站为不同UE组分配的资源区域可以以频分复用的方式存在。这样，每个UE组可以有自己独立的资源区域。According to an embodiment of the present invention, the resource regions allocated by the base station to different UE groups may exist in a frequency division multiplexing manner. In this way, each UE group can have its own independent resource area.
另外，基站也可以为至少两个UE组分配相同的资源区域。这样，由于存在复用的资源区域，于是需要通过某种方式将复用在一起的资源区域区分开，以使UE组顺利从资源区域上提取出发送给自己的DCI，例如利用UM-RNTI(UEgroupspecificMulticast-RadioNetworkTemporaryIdentifier，UE组专用组播无线网络临时鉴定)加扰相应UE组的资源区域，这将在下面结合图4进行描述。In addition, the base station may also allocate the same resource region to at least two UE groups. In this way, since there are multiplexed resource areas, it is necessary to separate the multiplexed resource areas in a certain way, so that the UE group can successfully extract the DCI sent to itself from the resource area, for example, using UM-RNTI ( UEgroupspecificMulticast-RadioNetworkTemporaryIdentifier, UE group-specific multicast radio network temporary identification) scrambles the resource area of the corresponding UE group, which will be described below in conjunction with FIG. 4 .
可以将所分配的承载DCI的资源区域称为UM-PDCCH(UEgroupspecificMulticast-PhysicalDownlinkControlChannel，UE组专用组播物理下行控制信道)域。每个UE组具有自己的UM-PDCCH域，也就是UM-PDCCH域与UE组一一对应。UE组内UE的DCI可以聚合在一起，承载在UM-PDCCH域上传输。The allocated DCI-carrying resource region may be referred to as a UM-PDCCH (UEgroupspecific Multicast-PhysicalDownlinkControlChannel, UE group-specific multicast-physical downlink control channel) region. Each UE group has its own UM-PDCCH domain, that is, there is a one-to-one correspondence between the UM-PDCCH domain and the UE group. The DCI of the UEs in the UE group can be aggregated together and carried on the UM-PDCCH domain for transmission.
在S120中，UM-DCI是一种控制信息，其名称并不对本发明的保护范围构成任何限制，如同UM-RNTI、UM-PDCCH的名称也不对本发明的保护范围构成任何限制一样。每个UE组具有自己的UM-DCI，即UE组和UM-DCI一一对应。通过UM-DCI，可以指向为相应UE组分配的资源区域，从而使得UE组内的UE基于UM-DCI可以找到相应的资源区域，便于DCI的交互。In S120, UM-DCI is a kind of control information, and its name does not constitute any limitation to the protection scope of the present invention, just like the names of UM-RNTI and UM-PDCCH do not constitute any limitation to the protection scope of the present invention. Each UE group has its own UM-DCI, that is, there is a one-to-one correspondence between the UE group and the UM-DCI. The UM-DCI can point to the resource area allocated for the corresponding UE group, so that the UEs in the UE group can find the corresponding resource area based on the UM-DCI, which facilitates DCI interaction.
根据本发明的一个实施例，UM-DCI可以包括供相应UE组内的UE使用的PMI。例如，如果将选择相同发射点的UE作为一个UE组，那么在一个这样的UE组内，可以为各个UE指定它们所使用的PMI。这样，通过使UE组内的UE使用相同的PMI，UE可以使用相同的预编码矩阵和DmRS(DemodulationReferenceSignal，解调参考信号)，有利于同一UE组内的UE使用相同的DmRS来解调承载在数据信道区域内的信息(例如使用相同的DmRS解调在数据信道区域内的资源区域上承载的DCI)，从而可以提高数据信道区域的资源利用率。According to one embodiment of the present invention, the UM-DCI may include a PMI for use by UEs within the corresponding UE group. For example, if the UEs that select the same transmission point are regarded as a UE group, then in such a UE group, the PMIs used by them can be specified for each UE. In this way, by making the UEs in the UE group use the same PMI, the UEs can use the same precoding matrix and DmRS (DemodulationReferenceSignal, demodulation reference signal), which is beneficial for the UEs in the same UE group to use the same DmRS to demodulate the The information in the data channel area (for example, using the same DmRS to demodulate the DCI carried on the resource area in the data channel area), so that the resource utilization rate of the data channel area can be improved.
相比于在控制信道区域上传输的DCI，UM-DCI由于其数量在绝大多数情况下少于甚至远远少于DCI的数量，并且其所包含的信息数据少于DCI的信息数据，使得即便UM-DCI在控制信道区域上传输，也可以减小控制信道区域内的开销。此外，通过在控制信道区域上传输UM-DCI，也可以与相关技术中UE利用控制信道区域上传输的信息确定信道分配的方式相一致，从而可以方便地融合到现有系统之中。Compared with the DCI transmitted on the control channel region, the number of UM-DCI is less or even far less than the number of DCI in most cases, and the information data it contains is less than the information data of DCI, so that Even if UM-DCI is transmitted on the control channel region, overhead in the control channel region can be reduced. In addition, by transmitting the UM-DCI on the control channel region, it can also be consistent with the way in the related art that the UE uses the information transmitted on the control channel region to determine channel allocation, so that it can be easily integrated into the existing system.
根据本发明的一个实施例，可以通过图2所示的方法200来通过控制信道区域发送UM-DCI。According to an embodiment of the present invention, the UM-DCI can be sent through the control channel region through the method 200 shown in FIG. 2 .
在S210中，基于UE组的UE组专用多播无线网络临时鉴定UM-RNTI，加扰UM-DCI。In S210, temporarily identify the UM-RNTI based on the UE group-specific multicast radio network of the UE group, and scramble the UM-DCI.
可以利用UE组的UM-RNTI来加扰该UE组的UM-DCI，这样可以便于UE在控制信道区域上利用所属UE组的UM-RNTI提取出所属UE组的UM-DCI。The UM-RNTI of the UE group can be used to scramble the UM-DCI of the UE group, so that the UE can use the UM-RNTI of the UE group to extract the UM-DCI of the UE group in the control channel region.
通过在UM-DCI上加扰UM-RNTI，可以与现有的LTER8、R9和R10系统相兼容。例如，仍然可以在控制信道区域上传输UE的DCI，此时该DCI用该UE的C-RNTI(Cell-RNTI，小区无线网络临时鉴定)加扰，UE可以如相关技术那样对其DCI进行盲检。当利用本发明实施例提供的方法传输DCI时，在控制信道区域上传输用UM-RNTI加扰的控制信息，则UE基于UM-RNTI确定该控制信息属于UM-DCI，在该UM-DCI指示的资源区域上，UE可以如相关技术那样盲检UE的DCI。By scrambling UM-RNTI on UM-DCI, it can be compatible with existing LTETER8, R9 and R10 systems. For example, the DCI of the UE can still be transmitted on the control channel region. At this time, the DCI is scrambled with the C-RNTI (Cell-RNTI, Cell Radio Network Temporary Identification) of the UE, and the UE can blind its DCI as in the related art. check. When using the method provided by the embodiment of the present invention to transmit DCI, the control information scrambled with UM-RNTI is transmitted on the control channel region, then the UE determines that the control information belongs to UM-DCI based on the UM-RNTI, and the UM-DCI indicates In the resource area of , the UE can blindly detect the DCI of the UE as in the related art.
在S220中，通过控制信道区域向该UE组发送加扰后的UM-DCI，以使该UE组内的UE基于该UE组的UM-RNTI确定UM-DCI。In S220, send the scrambled UM-DCI to the UE group through the control channel region, so that the UEs in the UE group determine the UM-DCI based on the UM-RNTI of the UE group.
这样，通过在控制信道区域传输UM-DCI，可以便捷地向UE组指示UE组所占用的资源区域，避免利用高层信令通知资源区域带来的额外的网络开销，并且不影响现有高层信令的既有结构和时序等。通过利用UM-RNTI加扰UM-DCI，有利于不同的UE组基于自己的UM-RNTI准确地从控制信道区域提取出自己的UM-DCI。In this way, by transmitting UM-DCI in the control channel area, the resource area occupied by the UE group can be conveniently indicated to the UE group, avoiding the extra network overhead caused by using high-level signaling to notify the resource area, and does not affect the existing high-level information The existing structure and timing of the order, etc. By using the UM-RNTI to scramble the UM-DCI, it is beneficial for different UE groups to accurately extract their own UM-DCI from the control channel region based on their own UM-RNTI.
返回图1，在S130中，基站可以通过资源区域向与该资源区域相应的UE组发送DCI。相应的UE组内的UE则在该资源区域上接收DCI，从而实现DCI的交互。Returning to FIG. 1, in S130, the base station may send DCI to a UE group corresponding to the resource area through the resource area. The UEs in the corresponding UE group receive the DCI in the resource area, so as to realize DCI interaction.
根据本发明的一个实施例，可以利用如图3所示的方法300来通过资源区域向UE组发送DCI。According to an embodiment of the present invention, the method 300 shown in FIG. 3 may be used to send DCI to a UE group through a resource region.
在S310中，对于UE组内的每个UE，基于该UE的小区无线网络临时鉴定C-RNTI，加扰需要发送给该UE的下行控制信息DCI。In S310, for each UE in the UE group, based on the temporary cell radio network identification C-RNTI of the UE, the downlink control information DCI that needs to be sent to the UE is scrambled.
对于需要发送给UE的DCI，用该UE的C-RNTI进行加扰。这样，该UE可以从它收到的大量信息中利用其C-RNTI提取出属于自己的DCI。For the DCI that needs to be sent to the UE, the C-RNTI of the UE is used for scrambling. In this way, the UE can use its C-RNTI to extract its own DCI from the large amount of information it has received.
在S320中，通过该资源区域向该UE组发送每个UE加扰后的DCI，以使每个UE在资源区域上利用该UE的C-RNTI获取发送给该UE的DCI。In S320, the scrambled DCI of each UE is sent to the UE group through the resource area, so that each UE obtains the DCI sent to the UE by using the C-RNTI of the UE in the resource area.
基站将用C-RNTI加扰后的DCI承载在资源区域上传输，从而可以将UE组内UE的DCI聚合在一起向该UE组发送。这样，UE组内的UE可以在与该UE组相应的资源区域内用自己的C-RNTI提取自己的DCI。The base station carries and transmits the DCI scrambled by the C-RNTI on the resource region, so that the DCIs of the UEs in the UE group can be aggregated and sent to the UE group. In this way, the UEs in the UE group can use their own C-RNTI to extract their own DCI in the resource area corresponding to the UE group.
根据本发明的一个实施例，还可以利用如图4所示的方法400来通过资源区域向UE组发送DCI。According to an embodiment of the present invention, the method 400 shown in FIG. 4 can also be used to send DCI to the UE group through the resource area.
在S410中，对于UE组内的每个UE，基于该UE的小区无线网络临时鉴定C-RNTI，加扰需要发送给该UE的下行控制信息DCI。In S410, for each UE in the UE group, based on the temporary cell radio network identification C-RNTI of the UE, the downlink control information DCI that needs to be sent to the UE is scrambled.
该步骤与S310基本相同。This step is basically the same as S310.
在S420中，当将每个UE加扰后的DCI承载在资源区域上时，基于该UE组的UE组专用多播无线网络临时鉴定UM-RNTI，在资源区域上进行加扰。In S420, when the scrambled DCI of each UE is carried on the resource region, scrambling is performed on the resource region based on the UE group-specific multicast radio network temporary identification UM-RNTI of the UE group.
基站将用UE的C-RNTI加扰后的DCI承载在资源区域上。在发送之前，基站可以用UM-RNTI对该资源区域进行加扰。每个UE组具有自己的UM-RNTI，即UM-RNTI与UE组一一对应。UM-RNTI可以是一种扰码，用于区分不同的UE组。The base station bears the DCI scrambled by the C-RNTI of the UE on the resource region. Before sending, the base station can use UM-RNTI to scramble the resource region. Each UE group has its own UM-RNTI, that is, there is a one-to-one correspondence between the UM-RNTI and the UE group. UM-RNTI can be a scrambling code used to distinguish different UE groups.
基站对资源区域进行加扰的方式可以有多种。例如，基站可以将资源区域上承载的UE组的信息作为一个整体，用UM-RNTI进行加扰。此时，UE需要先用UM-RNTI解扰该资源区域，再用自己的C-RNTI提取出自己的DCI。再例如，基站可以对每个DCI用C-RNTI加扰后、再用UM-RNTI进行加扰。此时，UE先后用UM-RNTI和C-RNTI进行解扰，最终提取出自己的DCI。There may be multiple ways for the base station to scramble the resource region. For example, the base station may use the UM-RNTI to scramble the information of the UE group carried on the resource region as a whole. At this time, the UE needs to use the UM-RNTI to descramble the resource area first, and then use its own C-RNTI to extract its own DCI. For another example, the base station may use the C-RNTI to scramble each DCI, and then use the UM-RNTI to scramble. At this time, the UE uses the UM-RNTI and the C-RNTI to descramble successively, and finally extracts its own DCI.
在S430中，通过资源区域向该UE组发送每个UE经两次加扰后的DCI，以使每个UE在资源区域上利用UM-RNTI和该UE的C-RNTI获取发送给该UE的DCI。In S430, the DCI scrambled twice for each UE is sent to the UE group through the resource area, so that each UE obtains the DCI sent to the UE by using the UM-RNTI and the C-RNTI of the UE in the resource area. DCI.
无论基站利用UM-RNTI基于什么方式加扰资源区域，UE的DCI都经历了C-RNTI和UM-RNTI两次加扰。基站通过资源区域将经两次加扰后的DCI发送出去，UE利用UM-RNTI和C-RNTI提取出自己的DCI。Regardless of how the base station uses the UM-RNTI to scramble the resource region, the DCI of the UE has been scrambled twice by the C-RNTI and the UM-RNTI. The base station sends out the twice-scrambled DCI through the resource area, and the UE uses the UM-RNTI and C-RNTI to extract its own DCI.
在图4所示的情况下，由于可以用UM-RNTI来区分不同UE组的资源区域，即便不同UE组复用相同的资源区域，也可以将UE组之间的信息区分开来。因此，根据本发明的一个实施例，为UE组分配的资源区域可以复用与为其他UE组分配的资源区域。这样，由于多个UE组可以共享相同的资源区域，减少了传输DCI的资源区域占用的物理信道资源，从而提高了物理信道的利用效率，对信道容量的扩大带来进一步好处。In the case shown in FIG. 4 , since the UM-RNTI can be used to distinguish resource areas of different UE groups, even if different UE groups reuse the same resource area, information between UE groups can also be distinguished. Therefore, according to an embodiment of the present invention, the resource area allocated to a UE group can be reused with the resource area allocated to other UE groups. In this way, since multiple UE groups can share the same resource area, the physical channel resources occupied by the DCI transmission resource area are reduced, thereby improving the utilization efficiency of the physical channel and bringing further benefits to the expansion of channel capacity.
根据本发明实施例提供的用于传输下行控制信息的方法，通过将同一小区中的UE分为不同的UE组，将发送给同一UE组的DCI承载在控制信道区域之外的资源区域上传输，使得DCI无需如相关技术那样受限在有限容量的控制信道区域上传输。从而，DCI可以占用更多的信道资源，DCI的传输不会因为控制信道区域内控制信道容量的制约而受到限制，因此可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过在控制信道区域传输指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。According to the method for transmitting downlink control information provided by the embodiment of the present invention, by dividing the UEs in the same cell into different UE groups, the DCI sent to the same UE group is carried on the resource area outside the control channel area for transmission , so that the DCI does not need to be limited to be transmitted on a limited-capacity control channel region as in the related art. Therefore, DCI can occupy more channel resources, and the transmission of DCI will not be limited due to the restriction of the control channel capacity in the control channel area, so the overhead of UE control signaling can be reduced in the control channel area, thereby increasing the bandwidth of the control channel. capacity. In addition, by transmitting the control information indicating the resource area in the control channel area, it is beneficial to save the extra overhead caused by using high-layer signaling to indicate the resource area.
接下来，结合具体的例子来描述本发明实施例提供的方法的一些细节内容。Next, some details of the method provided by the embodiment of the present invention are described in combination with specific examples.
图5是为不同UE组分配的承载DCI的资源区域的分布例子的示意图。Fig. 5 is a schematic diagram of a distribution example of DCI-carrying resource regions allocated for different UE groups.
在图5中，以时间和频率构成的信道资源为例来进行描述。左侧代表控制信道区域，在3GPPLTE系统中又可以被称为单播区域(Simulcastzone)；右侧代表数据信道区域，在3GPPLTE系统中又可以被称为多播区域(Multicastzone)。In FIG. 5 , channel resources composed of time and frequency are taken as an example for description. The left side represents the control channel zone, which may be called a unicast zone (Simulcast zone) in the 3GPP LTE system; the right side represents the data channel zone, which may be called a multicast zone (Multicast zone) in the 3GPP LTE system.
UE被划分为三个UE组，分别为UE组1、UE组2、UE组3。这三个组分别对应在控制信道区域上传输的UM-DCI1、UM-DCI2和UM-DCI3，并且基站分别为这三个UE组在数据信道区域内分配了资源区域UM-PDCCH域1、UM-PDCCH域2和UM-PDCH域3，UM-PDCCH域1和UM-PDCCH域2复用相同的物理信道资源，而UM-PDCCH域3则与它们频分复用物理信道资源。UEs are divided into three UE groups, namely UE Group 1, UE Group 2, and UE Group 3. These three groups correspond to UM-DCI1, UM-DCI2 and UM-DCI3 transmitted in the control channel area respectively, and the base station allocates resource areas UM-PDCCH domain 1, UM-DCCH area 1, UM - PDCCH domain 2 and UM-PDCH domain 3, UM-PDCCH domain 1 and UM-PDCCH domain 2 multiplex the same physical channel resources, and UM-PDCCH domain 3 shares physical channel resources with them in frequency division.
UM-DCI1、UM-DCI2和UM-DCI3分别指向UM-PDCCH域1、UM-PDCCH域2和UM-PDCH域3。这样，当三个UE组的UE确定出所属UE组的UM-DCI之后，可以基于UM-DCI找到相应的UM-PDCCH域，并确定自己的DCI承载在该UM-PDCCH域上。UM-DCI1, UM-DCI2 and UM-DCI3 point to UM-PDCCH domain 1, UM-PDCCH domain 2 and UM-PDCH domain 3 respectively. In this way, after the UEs of the three UE groups determine the UM-DCI of the UE group they belong to, they can find the corresponding UM-PDCCH domain based on the UM-DCI, and determine that their own DCI is carried on the UM-PDCCH domain.
图6是根据本发明实施例的加扰处理的示意图。可以通过多种方式对UM-DCI、DCI、UM-PDCCH域进行加扰，图6仅仅是一个例子，以便于进行理解。在图6中仅仅示出了与一个UE组中的一个UE相关的加扰方式。Fig. 6 is a schematic diagram of scrambling processing according to an embodiment of the present invention. The UM-DCI, DCI, and UM-PDCCH domains can be scrambled in various ways, and Fig. 6 is just an example for easy understanding. FIG. 6 only shows the scrambling scheme related to one UE in one UE group.
UM-DCI用与该UE所属的UE组对应的UM-RNTI进行加扰。该UE的DCI用该UE的C-RNTI加扰。当该UE所属的UE组内所有UE的DCI承载在与该UE组相应的UM-PDCCH域时，将UM-PDCCH域内属于该UE组的信息作为一个整体，用UM-RNTI进行加扰，这样，即便该UE所属的UE组与其他UE组占用相同的资源区域，也可以区分开各自的信息。另外，由于该UM-PDCCH域包含在数据信道区域内，还需要如相关技术那样用小区ID(CellID)进行加扰。该UE的DCI指向为该UE分配的PDSCH信道，在该PDSCH上如相关技术那样用该UE的C-RNTI和小区ID进行加扰。The UM-DCI is scrambled with the UM-RNTI corresponding to the UE group to which the UE belongs. The DCI of the UE is scrambled with the C-RNTI of the UE. When the DCI of all UEs in the UE group to which the UE belongs is carried in the UM-PDCCH domain corresponding to the UE group, the information belonging to the UE group in the UM-PDCCH domain as a whole is scrambled with UM-RNTI, so that , even if the UE group to which the UE belongs occupies the same resource area as other UE groups, respective information can be distinguished. In addition, since the UM-PDCCH domain is included in the data channel area, it is necessary to perform scrambling with a cell ID (CellID) as in the related art. The DCI of the UE points to the PDSCH channel allocated for the UE, and the C-RNTI and the cell ID of the UE are used for scrambling on the PDSCH as in the related art.
下面，结合图7描述根据本发明实施例的用于传输DCI的方法700。Next, a method 700 for transmitting DCI according to an embodiment of the present invention will be described with reference to FIG. 7 .
如图7所示，方法700包括：在S710中，在将同一小区的UE划分为至少一个UE组的情况下，确定所属的UE组；在S720中，在控制信道区域上接收基站发送的该UE组的UE组专用多播下行控制信息UM-DCI；在S730中，基于UM-DCI，确定基站在控制信道区域之外为该UE组分配的资源区域；在S740中，在资源区域上接收基站发送的下行控制信息DCI。As shown in FIG. 7 , the method 700 includes: in S710, when UEs in the same cell are divided into at least one UE group, determine the UE group to which they belong; The UE group-specific multicast downlink control information UM-DCI of the UE group; in S730, based on the UM-DCI, determine the resource area allocated by the base station for the UE group outside the control channel area; in S740, receive on the resource area The downlink control information DCI sent by the base station.
在将同一小区中的UE分为不同的UE组的情况下，UE在确定所属的UE组之后，根据该UE组的UM-DCI可以找到在控制信道区域之外承载有DCI的资源区域，从而通过该资源区域接收DCI。In the case that UEs in the same cell are divided into different UE groups, after the UE determines the UE group it belongs to, it can find the resource area bearing DCI outside the control channel area according to the UM-DCI of the UE group, so that DCI is received through this resource region.
这样，DCI不会如相关技术那样受限在有限容量的控制信道区域上传输，使得DCI可以占用更多的信道资源。因此，DCI的传输不会因为控制信道区域内控制信道容量的制约而受到限制，使得可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过在控制信道区域上接收指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。In this way, the DCI is not limited to be transmitted on the limited-capacity control channel region as in the related art, so that the DCI can occupy more channel resources. Therefore, the transmission of DCI will not be limited due to the restriction of the control channel capacity in the control channel area, so that the overhead of UE control signaling can be reduced in the control channel area, thereby increasing the capacity of the control channel. In addition, by receiving the control information indicating the resource area on the control channel area, it is beneficial to save the extra overhead caused by using high-layer signaling to indicate the resource area.
例如，方法700可以由UE执行。For example, method 700 may be performed by a UE.
在S710中，将同一小区的UE划分为UE组的方式可以参考方法100的S110中的相应描述。例如，可以将选择相同发射点的UE划分为一个UE组。再例如，可以将反馈相同PMI的UE划分为一个UE组。还例如，可以将每个UE单独作为一个UE组。In S710, for the manner of dividing the UEs in the same cell into UE groups, reference may be made to the corresponding description in S110 of the method 100. For example, UEs that select the same transmission point can be divided into a UE group. For another example, UEs that feed back the same PMI may be divided into a UE group. For another example, each UE may be separately regarded as a UE group.
在分组的情况下，UE需要确定自己所属的UE组。UE可以通过多种方式来确定所属的UE组。例如，UE可以通过基站发送给它的高层信令来确定它所属的UE组。再例如，UE可以根据预定设置来确定所属的UE组。举例来说，当将反馈相同PMI的UE划分为一组时，UE根据自己反馈的PMI就可以知晓所属的UE组。In the case of grouping, the UE needs to determine the UE group to which it belongs. The UE can determine the UE group it belongs to in various ways. For example, the UE can determine the UE group it belongs to through the high layer signaling sent to it by the base station. For another example, the UE may determine the UE group to which it belongs according to predetermined settings. For example, when the UEs that feed back the same PMI are divided into a group, the UE can know the UE group it belongs to according to the PMI fed back by itself.
在S720中，UE在控制信道区域上接收UM-DCI。S720的操作由于与方法100中的S120的操作相对应，因此S720的相关内容可以参考S120中的相关描述，为了避免重复，不再赘述。In S720, the UE receives UM-DCI on the control channel region. Since the operation of S720 corresponds to the operation of S120 in the method 100, the relevant content of S720 can refer to the relevant description in S120, and will not be described again in order to avoid repetition.
在S730中，UE可以通过UM-DCI确定基站为UE所属的UE组分配的资源区域。基站的操作可以参考上述方法100中的S110。In S730, the UE may determine the resource area allocated by the base station for the UE group to which the UE belongs through the UM-DCI. For operations of the base station, reference may be made to S110 in the foregoing method 100.
根据本发明的一个实施例，UM-DCI可以指示基站在数据信道区域内为该UE组分配的资源区域。这样，由于基站可以在数据信道区域内灵活地分配资源，使得基站可以容易地在数据信道区域内分配承载DCI的资源区域。According to an embodiment of the present invention, the UM-DCI may indicate the resource area allocated by the base station for the UE group in the data channel area. In this way, since the base station can flexibly allocate resources in the data channel area, the base station can easily allocate the resource area bearing DCI in the data channel area.
根据本发明的一个实施例，UM-DCI可以包括供该UE组内的UE使用的PMI。这样，同一UE组内的UE由于可以接收到基站通过UM-DCI指定的相同PMI，因此可以使用相同的预编码矩阵和DmRS，从而有利于同一UE组内的UE使用相同的DmRS来解调承载上数据信道区域内的信息(例如使用相同的DmRS解调在数据信道区域内的资源区域上承载的DCI)，使得可以提高数据信道区域的资源利用率。According to one embodiment of the present invention, the UM-DCI may include PMIs used by UEs within the UE group. In this way, since UEs in the same UE group can receive the same PMI specified by the base station through UM-DCI, they can use the same precoding matrix and DmRS, which is beneficial for UEs in the same UE group to use the same DmRS to demodulate the bearer Information in the data channel area (for example, using the same DmRS to demodulate the DCI carried on the resource area in the data channel area), so that the resource utilization of the data channel area can be improved.
根据本发明的一个实施例，UE所属的UE组的资源区域可以与为其他UE组分配的资源区域频分复用。这样，每个UE组可以有自己独立的资源区域。According to an embodiment of the present invention, the resource region of the UE group to which the UE belongs may be frequency division multiplexed with resource regions allocated for other UE groups. In this way, each UE group can have its own independent resource area.
另外，UE所属的UE组的资源区域可以复用为其他UE组分配的资源区域。这样，由于存在复用的资源区域，于是需要通过某种方式将复用在一起的资源区域区分开，以使UE组顺利从资源区域上提取出发送给自己的DCI，例如利用UM-RNTI加扰相应UE组的资源区域。In addition, the resource area of the UE group to which the UE belongs may reuse the resource area allocated for other UE groups. In this way, since there are multiplexed resource areas, it is necessary to separate the multiplexed resource areas in a certain way, so that the UE group can successfully extract the DCI sent to itself from the resource area, for example, use UM-RNTI to add interfere with the resource region of the corresponding UE group.
在S740中，UE在基于UM-DCI确定的资源区域上接收DCI。In S740, the UE receives the DCI on the resource region determined based on the UM-DCI.
根据本发明的一个实施例，可以基于UE的小区无线网络临时鉴定C-RNTI，在资源区域上接收基站发送给该UE的DCI，其中由基站基于该UE的C-RNTI加扰发送给该UE的DCI并将其承载在资源区域上传输。According to an embodiment of the present invention, the C-RNTI of the cell wireless network of the UE can be temporarily identified, and the DCI sent by the base station to the UE can be received in the resource area, wherein the base station sends to the UE with scrambling based on the C-RNTI of the UE DCI and carry it on the resource area for transmission.
基站的相关操作可以参考上述方法300中的S310和S320。UE利用自己的C-RNTI可以从资源区域上提取出属于自己的DCI。For related operations of the base station, reference may be made to S310 and S320 in the foregoing method 300. The UE can extract its own DCI from the resource area by using its own C-RNTI.
根据本发明的一个实施例，可以基于UE组的UE组专用多播无线网络临时鉴定UM-RNTI和UE的小区无线网络临时鉴定C-RNTI，在资源区域上接收基站发送给该UE的DCI，其中由基站基于该UE的C-RNTI加扰发送给该UE的DCI，当将其承载在资源区域上时，基于该UE组的UM-RNTI在资源区域上进行加扰并传输。According to an embodiment of the present invention, based on the UE group-specific multicast radio network temporary identification UM-RNTI of the UE group and the UE's cell radio network temporary identification C-RNTI, the DCI sent by the base station to the UE can be received in the resource area, The DCI sent to the UE is scrambled by the base station based on the C-RNTI of the UE, and when it is carried in the resource region, scrambled and transmitted based on the UM-RNTI of the UE group in the resource region.
基站的相关操作可以参考上述方法400中的S410至S430。例如，当UE基于UM-DCI确定资源区域之后，如果基站将资源区域内属于UE组的DCI作为一个整体用UM-RNTI进行加扰，则UE首先利用UM-RNTI对该资源区域内的信息进行解扰，再利用C-RNTI提取出属于自己的DCI。再例如，如果基站用C-RNTI加扰UE的DCI之后、又用UM-DCI加扰，则UE首先利用UM-RNTI解扰、再利用C-RNTI解扰，以从资源区域中提取出属于自己的DCI。For related operations of the base station, reference may be made to S410 to S430 in the foregoing method 400 . For example, after the UE determines the resource area based on the UM-DCI, if the base station uses the UM-RNTI to scramble the DCI belonging to the UE group in the resource area as a whole, the UE first uses the UM-RNTI to scramble the information in the resource area. Descramble, and then use C-RNTI to extract its own DCI. For another example, if the base station uses C-RNTI to scramble the UE's DCI and then uses UM-DCI to scramble, the UE first uses UM-RNTI to descramble, and then uses C-RNTI to descramble, so as to extract from the resource area the own DCI.
S740的操作由于与方法100中的S130的操作相对应，因此S740的相关内容可以参考S130中的相关描述，为了避免重复，不再赘述。Since the operation of S740 corresponds to the operation of S130 in the method 100, the relevant content of S740 can refer to the relevant description in S130, and in order to avoid repetition, details are not repeated here.
根据本发明实施例提供的用于传输下行控制信息的方法，在将同一小区中的UE分为不同的UE组的情况下，UE在确定所属的UE组之后，根据该UE组的UM-DCI可以找到承载有DCI的控制信道区域之外的资源区域，从而从该资源区域接收DCI。这样，DCI不会如相关技术那样受限在有限容量的控制信道区域上传输，使得DCI可以占用更多的信道资源。因此，可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，UE通过在控制信道区域上接收UM-DCI来确定资源区域，可以使UE基于控制信道区域传递的控制信息来便捷地获知资源区域的位置，避免利用高层信令引起额外的网络开销。According to the method for transmitting downlink control information provided by the embodiment of the present invention, in the case of dividing UEs in the same cell into different UE groups, after the UE determines the UE group it belongs to, according to the UM-DCI of the UE group A resource region other than the control channel region carrying the DCI can be found so as to receive the DCI from the resource region. In this way, the DCI is not limited to be transmitted on the limited-capacity control channel region as in the related art, so that the DCI can occupy more channel resources. Therefore, the overhead of UE control signaling can be reduced in the control channel region, thereby increasing the capacity of the control channel. In addition, the UE determines the resource region by receiving UM-DCI on the control channel region, which enables the UE to conveniently know the location of the resource region based on the control information transmitted in the control channel region, avoiding additional network overhead caused by high-level signaling.
特别地，可以将上述的方法100至400和700用在LTER11CoMPScenario4场景下，也就是方法中涉及的小区是LTER11CoMPScenario4场景下的小区。在3GPPRAN(RadioAccessNetwork，无线接入网)1第63次会议上，定义了四种CoMP场景。其中在第四种场景下，宏基站区域内所有包括RRH的传输点都共享同一小区ID。由于没有小区分裂的增益，第四种场景的小区内的UE数相比其他三种场景(其他三种场景采用了小区分裂技术)成倍地增加，并且随着小区内UE数的增加，控制信道区域内控制信道容量受到限制。因此，可以利用本发明实施例提供的方法以将UE的DCI承载在控制信道区域之外的区域内传输，从而扩大控制信道容量。当然，除了上述网络环境之外，本领域技术人员还可以想到，当在其他网络环境(例如，热点地区)中出现控制信道区域内控制信道容量受限的情况时，也可以通过利用本发明实施例提供的方法，在控制信道区域之外分配资源区域，将UE的DCI承载在资源区域上传输，以解决控制信道容量受限的问题。In particular, the above-mentioned methods 100 to 400 and 700 can be used in the LTE 11 CoMP Scenario 4 scenario, that is, the cell involved in the method is a cell in the LTE 11 CoMP Scenario 4 scenario. At the 63rd meeting of 3GPPRAN (Radio Access Network, radio access network) 1, four CoMP scenarios were defined. In the fourth scenario, all transmission points including RRHs in the area of the macro base station share the same cell ID. Since there is no gain from cell splitting, the number of UEs in the cell in the fourth scenario increases exponentially compared to the other three scenarios (the other three scenarios use cell splitting technology), and as the number of UEs in the cell increases, the control The control channel capacity is limited within the channel region. Therefore, the method provided by the embodiment of the present invention can be used to transmit the DCI of the UE in an area outside the control channel area, thereby expanding the capacity of the control channel. Of course, in addition to the above-mentioned network environment, those skilled in the art can also think that when the control channel capacity in the control channel area is limited in other network environments (for example, hot spots), it can also be implemented by using the present invention. In the method provided by the example, the resource area is allocated outside the control channel area, and the UE's DCI is carried on the resource area for transmission, so as to solve the problem of limited control channel capacity.
上面，描述了根据本发明实施例的用于传输DCI的方法。下面，结合图8至图11描述根据本发明实施例的相关设备的结构框图。Above, the method for transmitting DCI according to the embodiment of the present invention is described. In the following, a structural block diagram of a related device according to an embodiment of the present invention will be described with reference to FIG. 8 to FIG. 11 .
图8是根据本发明实施例的接入设备800的结构框图。Fig. 8 is a structural block diagram of an access device 800 according to an embodiment of the present invention.
接入设备800包括分配模块810、第一发送模块820和第二发送模块830。分配模块810可用于在将同一小区的UE划分为至少一个UE组的情况下，为至少一个UE组中的一个UE组分配控制信道区域之外的资源区域。第一发送模块820可用于通过控制信道区域向该UE组发送UE组专用多播下行控制信息UM-DCI，以使该UE组基于UM-DCI确定资源区域。第二发送模块830可用于通过资源区域向该UE组发送下行控制信息DCI。The access device 800 includes an allocation module 810 , a first sending module 820 and a second sending module 830 . The allocation module 810 may be configured to allocate a resource area outside the control channel area to one UE group in the at least one UE group when the UEs in the same cell are divided into at least one UE group. The first sending module 820 may be configured to send UE group-specific multicast downlink control information UM-DCI to the UE group through the control channel region, so that the UE group determines the resource region based on the UM-DCI. The second sending module 830 may be configured to send downlink control information DCI to the UE group through the resource area.
分配模块810、第一发送模块820和第二发送模块830的上述和其他操作和/或功能可以参考上述方法100的S110至S130，为了避免重复，在此不再赘述。For the above and other operations and/or functions of the allocating module 810, the first sending module 820, and the second sending module 830, reference may be made to S110 to S130 of the above-mentioned method 100, and details are not repeated here to avoid repetition.
根据本发明实施例提供的接入设备，通过将同一小区中的UE分为不同的UE组，以UE组为单位，将发送给同一UE组的DCI映射到控制信道区域之外的资源区域中传输，并利用在控制信道区域上传输的UM-DCI指示该资源区域以便UE组正确接收DCI。这样，DCI无需如相关技术那样受限在有限容量的控制信道区域上传输，从而使得DCI可以占用更多的信道资源，DCI的传输不会因为控制信道区域内控制信道容量的制约而受到限制，因此可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过在控制信道区域传输指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。According to the access device provided by the embodiment of the present invention, by dividing the UEs in the same cell into different UE groups, the DCI sent to the same UE group is mapped to the resource area outside the control channel area by taking the UE group as a unit transmission, and indicate the resource region with the UM-DCI transmitted on the control channel region so that the UE group can correctly receive the DCI. In this way, DCI does not need to be restricted to be transmitted in a limited-capacity control channel area as in the related art, so that DCI can occupy more channel resources, and the transmission of DCI will not be limited due to the restriction of the control channel capacity in the control channel area. Therefore, the overhead of UE control signaling can be reduced in the control channel region, thereby increasing the capacity of the control channel. In addition, by transmitting the control information indicating the resource area in the control channel area, it is beneficial to save the extra overhead caused by using high-layer signaling to indicate the resource area.
图9是根据本发明实施例的接入设备900的结构框图。接入设备900中的分配模块910、第一发送模块920和第二发送模块930与接入设备800中的分配模块810、第一发送模块820和第二发送模块830基本相同。Fig. 9 is a structural block diagram of an access device 900 according to an embodiment of the present invention. The distribution module 910 , the first sending module 920 and the second sending module 930 in the access device 900 are basically the same as the distribution module 810 , the first sending module 820 and the second sending module 830 in the access device 800 .
根据本发明的实施例，可以通过多种发送将同一小区的UE划分为至少一个UE组。例如，可以将选择相同发射点的UE划分为一个UE组。再例如，可以将反馈相同PMI的UE划分为一个UE组。又例如，可以将每个UE单独作为一个UE组。According to an embodiment of the present invention, UEs in the same cell can be divided into at least one UE group through multiple transmissions. For example, UEs that select the same transmission point can be divided into a UE group. For another example, UEs that feed back the same PMI may be divided into a UE group. For another example, each UE may be separately regarded as a UE group.
根据本发明的一个实施例，分配模块910可用于为UE组分配数据信道区域内的资源区域。According to an embodiment of the present invention, the allocation module 910 may be used to allocate resource areas within the data channel area for UE groups.
根据本发明的一个实施例，第一发送模块920可以包括第一加扰单元922和第一发送单元924。第一加扰单元922可用于基于UE组的UE组专用多播无线网络临时鉴定UM-RNTI，加扰UM-DCI。第一发送单元924可用于通过控制信道区域向UE组发送加扰后的UM-DCI，以使UE组基于UE组的UM-RNTI确定UM-DCI。According to an embodiment of the present invention, the first sending module 920 may include a first scrambling unit 922 and a first sending unit 924 . The first scrambling unit 922 may be configured to scramble the UM-DCI based on temporary identification of the UM-RNTI of the UE group-specific multicast radio network of the UE group. The first sending unit 924 may be configured to send the scrambled UM-DCI to the UE group through the control channel region, so that the UE group determines the UM-DCI based on the UM-RNTI of the UE group.
根据本发明的一个实施例，第二发送模块930可以包括第二加扰单元932和第二发送单元934。第二加扰单元932可用于对于UE组内的每个UE，基于该UE的小区无线网络临时鉴定C-RNTI，加扰需要发送给该UE的下行控制信息DCI。第二发送单元934可用于通过资源区域向UE组发送每个UE加扰后的DCI，以使每个UE在资源区域上利用该UE的C-RNTI获取发送给该UE的DCI。According to an embodiment of the present invention, the second sending module 930 may include a second scrambling unit 932 and a second sending unit 934 . The second scrambling unit 932 may be configured to, for each UE in the UE group, scramble the downlink control information DCI that needs to be sent to the UE based on the temporary cell radio network identification C-RNTI of the UE. The second sending unit 934 may be configured to send the scrambled DCI of each UE to the UE group through the resource area, so that each UE obtains the DCI sent to the UE by using the C-RNTI of the UE in the resource area.
根据本发明的一个实施例，第二发送单元934可以包括加扰子单元936和发送子单元938。加扰子单元936可用于当将每个UE加扰后的DCI承载在资源区域上时，基于UE组的UE组专用多播无线网络临时鉴定UM-RNTI，在资源区域上进行加扰。发送子单元938可用于通过资源区域向UE组发送每个UE经两次加扰后的DCI，以使每个UE在资源区域上利用UM-RNTI和该UE的C-RNTI获取发送给该UE的DCI。此时，根据本发明的一个实施例，分配模块910分配的资源区域可以复用为其他UE组分配的资源区域。According to an embodiment of the present invention, the second sending unit 934 may include a scrambling subunit 936 and a sending subunit 938 . The scrambling subunit 936 may be configured to perform scrambling on the resource region based on UE group-specific UE group-specific multicast radio network temporary identification UM-RNTI of the UE group when the scrambled DCI of each UE is carried on the resource region. The sending subunit 938 can be used to send the DCI after twice scrambling of each UE to the UE group through the resource area, so that each UE can use the UM-RNTI and the C-RNTI of the UE to obtain and send the DCI to the UE in the resource area DCI. At this time, according to an embodiment of the present invention, the resource area allocated by the allocation module 910 may reuse the resource area allocated for other UE groups.
根据本发明的一个实施例，无论是否用UM-RNTI对资源区域进行加扰，分配模块910分配的资源区域可以与为其他UE组分配的资源区域频分复用。According to an embodiment of the present invention, no matter whether the resource region is scrambled with UM-RNTI or not, the resource region allocated by the allocation module 910 can be frequency division multiplexed with resource areas allocated for other UE groups.
根据本发明的一个实施例，UM-DCI可以包括供UE组内的UE使用的PMI。According to one embodiment of the present invention, the UM-DCI may include a PMI for use by UEs within a UE group.
根据本发明的一个实施例，小区可以是LTER11CoMPScenario4场景下的小区。According to an embodiment of the present invention, the cell may be a cell in an LTE 11 CoMP Scenario 4 scenario.
分配模块910、第一加扰单元922、第一发送单元924、第二加扰单元932、第二发送单元934、加扰子单元936和发送子单元938的上述和其他操作和/或功能可以参考上述方法100中的S110、方法200中的S210和S220、方法300中的S310和S320以及方法400中的S420和S430，为了避免重复，在此不再赘述。The above and other operations and/or functions of the allocation module 910, the first scrambling unit 922, the first sending unit 924, the second scrambling unit 932, the second sending unit 934, the scrambling subunit 936 and the sending subunit 938 may be Refer to S110 in the method 100, S210 and S220 in the method 200, S310 and S320 in the method 300, and S420 and S430 in the method 400 above, in order to avoid repetition, details are not repeated here.
根据本发明实施例提供的接入设备，通过利用UM-RNTI加扰UM-DCI，有利于不同的UE组基于自己的UM-RNTI准确地从控制信道区域提取出自己的UM-DCI。通过利用UM-RNTI对资源区域进行加扰，使得多个UE组可以共享相同的资源区域，从而减少传输DCI的资源区域占用的物理信道资源，可以提高物理信道的利用效率，对信道容量的扩大带来进一步好处。此外，通过在UM-DCI中包含相同的PMI，同一UE组的UE可以使用相同的DmRS来解调在数据信道区域内的资源区域上承载的DCI，从而可以提高数据信道区域的资源利用率。According to the access device provided in the embodiment of the present invention, by using the UM-RNTI to scramble the UM-DCI, different UE groups can accurately extract their own UM-DCI from the control channel region based on their own UM-RNTI. By using UM-RNTI to scramble the resource area, multiple UE groups can share the same resource area, thereby reducing the physical channel resources occupied by the DCI resource area, improving the utilization efficiency of the physical channel, and expanding the channel capacity. bring further benefits. In addition, by including the same PMI in the UM-DCI, UEs in the same UE group can use the same DmRS to demodulate the DCI carried on the resource region in the data channel region, thereby improving the resource utilization of the data channel region.
图10是根据本发明实施例的用户设备1000的结构框图。Fig. 10 is a structural block diagram of a user equipment 1000 according to an embodiment of the present invention.
用户设备1000包括第一确定模块1010、第一接收模块1020、第二确定模块1030和第二接收模块1040。第一确定模块1010可用于在将同一小区的UE划分为至少一个UE组的情况下，确定所属的UE组。第一接收模块1020可用于在控制信道区域上接收基站发送的该UE组的UE组专用多播下行控制信息UM-DCI。第二确定模块1030可用于基于UM-DCI，确定基站在控制信道区域之外为该UE组分配的资源区域。第二接收模块1040可用于在资源区域上接收基站发送的下行控制信息DCI。The user equipment 1000 includes a first determining module 1010 , a first receiving module 1020 , a second determining module 1030 and a second receiving module 1040 . The first determining module 1010 may be configured to determine the UE group to which the UE belongs when the UEs in the same cell are divided into at least one UE group. The first receiving module 1020 may be configured to receive UE group-specific multicast downlink control information UM-DCI of the UE group sent by the base station in the control channel region. The second determination module 1030 may be configured to determine, based on the UM-DCI, the resource area allocated by the base station for the UE group outside the control channel area. The second receiving module 1040 may be configured to receive downlink control information DCI sent by the base station in the resource area.
第一确定模块1010、第一接收模块1020、第二确定模块1030和第二接收模块1040的上述和其他操作和/或功能可以参考上述方法700中的S710至S740，为了避免重复，在此不再赘述。For the above-mentioned and other operations and/or functions of the first determining module 1010, the first receiving module 1020, the second determining module 1030, and the second receiving module 1040, reference can be made to S710 to S740 in the above-mentioned method 700. In order to avoid repetition, the Let me repeat.
根据本发明实施例提供的用户设备，在将同一小区中的UE分为不同的UE组的情况下，该用户设备可以在确定所属的UE组之后，根据该UE组的UM-DCI找到在控制信道区域之外承载有DCI的资源区域，从而通过该资源区域接收DCI。这样，DCI不会如相关技术那样受限在有限容量的控制信道区域上传输，使得DCI可以占用更多的信道资源。因此，DCI的传输不会因为控制信道区域内控制信道容量的制约而受到限制，使得可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过控制信道区域接收指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。According to the user equipment provided in the embodiments of the present invention, when the UEs in the same cell are divided into different UE groups, the user equipment can find the UE in the control group according to the UM-DCI of the UE group after determining the UE group to which it belongs. A resource area bearing DCI outside the channel area, so that the DCI is received through the resource area. In this way, the DCI is not limited to be transmitted on the limited-capacity control channel region as in the related art, so that the DCI can occupy more channel resources. Therefore, the transmission of DCI will not be limited due to the restriction of the control channel capacity in the control channel area, so that the overhead of UE control signaling can be reduced in the control channel area, thereby increasing the capacity of the control channel. In addition, receiving the control information indicating the resource area through the control channel area is beneficial to save the extra overhead caused by using high layer signaling to indicate the resource area.
根据本发明的一个实施例，可以有多种方式将UE划分为不同的UE组。例如，可以将选择相同发射点的UE划分为一个UE组。再例如，可以将反馈相同PMI的UE划分为一个UE组。又例如，可以将每个UE单独作为一个UE组。According to an embodiment of the present invention, there may be multiple ways to divide UEs into different UE groups. For example, UEs that select the same transmission point can be divided into a UE group. For another example, UEs that feed back the same PMI may be divided into a UE group. For another example, each UE may be separately regarded as a UE group.
根据本发明的一个实施例，第二确定模块1030可用于基于UM-DCI，确定基站在数据信道区域内为该UE组分配的资源区域。According to an embodiment of the present invention, the second determination module 1030 may be configured to determine the resource area allocated by the base station for the UE group in the data channel area based on the UM-DCI.
根据本发明的一个实施例，第一接收模块1020可用于基于该UE组的UE组专用多播无线网络临时鉴定UM-RNTI，在控制信道区域上接收基站发送的该UE组的UM-DCI，其中由基站基于该UE组的UM-RNTI加扰该UE组的UM-DCI。According to an embodiment of the present invention, the first receiving module 1020 may be configured to temporarily identify the UM-RNTI based on the UE group-specific multicast wireless network of the UE group, and receive the UM-DCI of the UE group sent by the base station in the control channel region, The base station scrambles the UM-DCI of the UE group based on the UM-RNTI of the UE group.
根据本发明的一个实施例，第二接收模块1040可用于基于用户设备1000的小区无线网络临时鉴定C-RNTI，在资源区域上接收基站发送给用户设备1000的DCI，其中由基站基于用户设备1000的C-RNTI加扰发送给用户设备1000的DCI并将其承载在资源区域上传输。According to an embodiment of the present invention, the second receiving module 1040 may be configured to receive the DCI sent by the base station to the user equipment 1000 in the resource area based on the cell radio network temporary identification C-RNTI of the user equipment 1000, wherein the base station is based on the user equipment 1000 The C-RNTI scrambles the DCI sent to the user equipment 1000 and bears it on the resource region for transmission.
根据本发明的一个实施例，第二接收模块1040可用于基于该UE组的UE组专用多播无线网络临时鉴定UM-RNTI和用户设备1000的小区无线网络临时鉴定C-RNTI，在资源区域上接收基站发送给用户设备1000的DCI，其中由基站基于用户设备1000的C-RNTI加扰发送给用户设备1000的DCI，当将其承载在资源区域上时，基于该UE组的UM-RNTI在资源区域上进行加扰并传输。此时，根据本发明的一个实施例，第二确定模块1030确定的资源区域可以复用为其他UE组分配的资源区域。According to an embodiment of the present invention, the second receiving module 1040 can be used to temporarily identify the UE group-specific multicast radio network UM-RNTI based on the UE group and the cell radio network temporary identification C-RNTI of the user equipment 1000, in the resource area Receive the DCI sent by the base station to the user equipment 1000, wherein the DCI sent to the user equipment 1000 is scrambled by the base station based on the C-RNTI of the user equipment 1000, and when it is carried on the resource area, the UM-RNTI based on the UE group is in Scramble and transmit on the resource area. At this time, according to an embodiment of the present invention, the resource regions determined by the second determining module 1030 may be reused as resource regions allocated for other UE groups.
根据本发明的一个实施例，无论是否使用UM-RNTI在资源区域上进行加扰，第二确定模块1030确定的资源区域可以与为其他UE组分配的资源区域频分复用。According to an embodiment of the present invention, regardless of whether UM-RNTI is used to perform scrambling on the resource region, the resource region determined by the second determination module 1030 can be frequency division multiplexed with resource regions allocated for other UE groups.
根据本发明的一个实施例，UM-DCI可以包括供该UE组内的UE使用的PMI。According to one embodiment of the present invention, the UM-DCI may include PMIs used by UEs within the UE group.
根据本发明的一个实施例，小区可以是LTER11CoMPScenario4场景下的小区。According to an embodiment of the present invention, the cell may be a cell in an LTE 11 CoMP Scenario 4 scenario.
根据本发明实施例提供的用户设备，通过基于UM-RNTI确定UM-DCI，有利于准确地从控制信道区域提取出所属UE组的UM-DCI。通过基于UM-RNTI来区分资源区域，使得多个UE组可以共享相同的资源区域，从而减少传输DCI的资源区域占用的物理信道资源，可以提高物理信道的利用效率，对信道容量的扩大带来进一步好处。此外，通过在UM-DCI中包含相同的PMI，同一UE组的UE可以使用相同的DmRS来解调在数据信道区域内的资源区域上承载的DCI，从而可以提高数据信道区域的资源利用率。According to the user equipment provided in the embodiments of the present invention, by determining the UM-DCI based on the UM-RNTI, it is beneficial to accurately extract the UM-DCI of the UE group to which it belongs from the control channel region. By distinguishing resource areas based on UM-RNTI, multiple UE groups can share the same resource area, thereby reducing the physical channel resources occupied by the resource area for DCI transmission, improving the utilization efficiency of physical channels, and bringing about expansion of channel capacity. Further benefits. In addition, by including the same PMI in the UM-DCI, UEs in the same UE group can use the same DmRS to demodulate the DCI carried on the resource region in the data channel region, thereby improving the resource utilization of the data channel region.
接下来，参考图11描述根据本发明实施例提供的用于传输DCI的系统1100。Next, a system 1100 for transmitting DCI provided according to an embodiment of the present invention is described with reference to FIG. 11 .
系统1100可以包括接入设备1110和用户设备1120。System 1100 may include an access device 1110 and a user device 1120 .
接入设备1110可用于在将同一小区的UE划分为至少一个UE组的情况下，为至少一个UE组中的一个UE组分配控制信道区域之外的资源区域；通过控制信道区域向该UE组发送UE组专用多播下行控制信息UM-DCI；通过资源区域向该UE组发送下行控制信息DCI。The access device 1110 can be used to allocate a resource area outside the control channel area to one UE group in the at least one UE group when the UEs in the same cell are divided into at least one UE group; Send the UE group-specific multicast downlink control information UM-DCI; send the downlink control information DCI to the UE group through the resource area.
用户设备1120可用于在将同一小区的UE划分为至少一个UE组的情况下，确定所属的UE组；在控制信道区域上接收接入设备1110发送的该UE组的UE组专用多播下行控制信息UM-DCI；基于该UM-DCI，确定接入设备1110在控制信道区域之外为该UE组分配的资源区域；在该资源区域上接收接入设备1110发送的下行控制信息DCI。The user equipment 1120 can be used to determine the UE group to which it belongs when the UEs in the same cell are divided into at least one UE group; receive the UE group-specific multicast downlink control of the UE group sent by the access device 1110 on the control channel area Information UM-DCI; based on the UM-DCI, determine the resource area allocated by the access device 1110 for the UE group outside the control channel area; receive the downlink control information DCI sent by the access device 1110 on the resource area.
接入设备1110的上述和其他操作和/或功能可以参考上述方法100至400中的相关描述。用户设备1120的上述和其他操作和/或功能可以参考上述方法700中的相关描述，为了避免重复，在此不再赘述。For the foregoing and other operations and/or functions of the access device 1110 , reference may be made to relevant descriptions in the foregoing methods 100 to 400 . For the foregoing and other operations and/or functions of the user equipment 1120, reference may be made to relevant descriptions in the foregoing method 700, and details are not repeated here to avoid repetition.
根据本发明实施例提供的用于传输下行控制信息的系统，通过将同一小区中的UE分为不同的UE组，接入设备可以以UE组为单位，将发送给同一UE组的DCI映射到控制信道区域之外的资源区域中传输，并利用在控制信道区域上传输的UM-DCI指示该资源区域以便UE组正确接收DCI。这样，DCI无需如相关技术那样受限在有限容量的控制信道区域上传输，从而使得DCI可以占用更多的信道资源，DCI的传输不会因为控制信道区域内控制信道容量的制约而受到限制，因此可以在控制信道区域上降低UE控制信令的开销，进而增加控制信道的容量。此外，通过在控制信道区域传输指示资源区域的控制信息，有利于节省利用高层信令指示资源区域引起的额外开销。According to the system for transmitting downlink control information provided by the embodiment of the present invention, by dividing the UEs in the same cell into different UE groups, the access device can use the UE group as a unit to map the DCI sent to the same UE group to The UM-DCI transmitted on the control channel area is used to indicate the resource area so that the UE group can correctly receive the DCI. In this way, DCI does not need to be restricted to be transmitted in a limited-capacity control channel area as in the related art, so that DCI can occupy more channel resources, and the transmission of DCI will not be limited due to the restriction of the control channel capacity in the control channel area. Therefore, the overhead of UE control signaling can be reduced in the control channel region, thereby increasing the capacity of the control channel. In addition, by transmitting the control information indicating the resource area in the control channel area, it is beneficial to save the extra overhead caused by using high-layer signaling to indicate the resource area.
本领域技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。Those skilled in the art can realize that, in combination with the method steps and units described in the embodiments disclosed herein, they can be realized by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software Alternatively, in the above description, the steps and components of each embodiment have been generally described in terms of functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may implement the described functionality using different methods for each particular application, but such implementation should not be considered as exceeding the scope of the present invention.
结合本文中所公开的实施例描述的方法步骤可以用硬件、处理器执行的软件程序、或者二者的结合来实施。软件程序可以置于随机存取存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM或技术领域内所公知的任意其它形式的存储介质中。The method steps described in connection with the embodiments disclosed herein may be implemented by hardware, software programs executed by a processor, or a combination of both. The software program may reside in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field Any other known storage medium.
尽管已示出和描述了本发明的一些实施例，但本领域技术人员应该理解，在不脱离本发明的原理和精神的情况下，可对这些实施例进行各种修改，这样的修改应落入本发明的范围内。Although some embodiments of the present invention have been shown and described, it should be understood by those skilled in the art that various modifications can be made to these embodiments without departing from the principles and spirit of the invention, and such modifications shall fall within into the scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110127765.8ACN102791036B (en) | 2011-05-17 | 2011-05-17 | Transmit the method for Downlink Control Information, access device, subscriber equipment and system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110127765.8ACN102791036B (en) | 2011-05-17 | 2011-05-17 | Transmit the method for Downlink Control Information, access device, subscriber equipment and system |
| Publication Number | Publication Date |
|---|---|
| CN102791036A CN102791036A (en) | 2012-11-21 |
| CN102791036Btrue CN102791036B (en) | 2016-01-13 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110127765.8AActiveCN102791036B (en) | 2011-05-17 | 2011-05-17 | Transmit the method for Downlink Control Information, access device, subscriber equipment and system |
| Country | Link |
|---|---|
| CN (1) | CN102791036B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3565333A4 (en)* | 2017-01-05 | 2020-01-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | SIGNAL TRANSMISSION METHOD AND DEVICE |
| US10595326B2 (en)* | 2016-12-12 | 2020-03-17 | Mediatek Inc. | Methods of efficient downlink control information transmission |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301065B (en) | 2013-07-16 | 2018-12-11 | 电信科学技术研究院 | A kind of instruction of uplink-downlink configuration determines method and base station, terminal |
| CN107920333B (en)* | 2016-10-08 | 2021-11-02 | 中国移动通信有限公司研究院 | Multicast scheduling method, HARQ information receiving method, user equipment and base station |
| WO2019136647A1 (en)* | 2018-01-10 | 2019-07-18 | 富士通株式会社 | Data transmitting method and device, and communication system |
| CN110474741B (en)* | 2018-05-11 | 2021-01-15 | 华为技术有限公司 | A communication method and device |
| CN110831186B (en)* | 2018-08-10 | 2023-10-13 | 大唐移动通信设备有限公司 | Scheduling method, scheduling device, base station, terminal and computer readable storage medium |
| CN111246588B (en)* | 2020-01-10 | 2021-10-26 | 北京邮电大学 | Method for solving out-of-order scheduling between different priority services in NR system |
| EP4132155A4 (en)* | 2020-05-07 | 2023-05-03 | Huawei Technologies Co., Ltd. | METHOD AND DEVICE TO SUPPORT THE TRANSMISSION OF CONFIRMATION FEEDBACK INFORMATION OF HYBRID AUTOMATIC REPEAT REQUESTS OF A MULTICAST SERVICE |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007032289A1 (en)* | 2005-09-12 | 2007-03-22 | Ntt Docomo, Inc. | Data transmitting system, data transmitting method, base station and mobile station |
| CN101060699A (en)* | 2006-04-17 | 2007-10-24 | 北京三星通信技术研究有限公司 | A downlink control signaling transmission method and equipment |
| CN101453774A (en)* | 2007-11-30 | 2009-06-10 | 华为技术有限公司 | Packet assignment method, system and apparatus |
| CN101925077A (en)* | 2009-06-09 | 2010-12-22 | 大唐移动通信设备有限公司 | Transmission and indication method and device for relay system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534507B (en)* | 2008-03-12 | 2014-04-16 | 株式会社Ntt都科摩 | Physical resource distributing method and device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007032289A1 (en)* | 2005-09-12 | 2007-03-22 | Ntt Docomo, Inc. | Data transmitting system, data transmitting method, base station and mobile station |
| CN101060699A (en)* | 2006-04-17 | 2007-10-24 | 北京三星通信技术研究有限公司 | A downlink control signaling transmission method and equipment |
| CN101453774A (en)* | 2007-11-30 | 2009-06-10 | 华为技术有限公司 | Packet assignment method, system and apparatus |
| CN101925077A (en)* | 2009-06-09 | 2010-12-22 | 大唐移动通信设备有限公司 | Transmission and indication method and device for relay system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10595326B2 (en)* | 2016-12-12 | 2020-03-17 | Mediatek Inc. | Methods of efficient downlink control information transmission |
| EP3565333A4 (en)* | 2017-01-05 | 2020-01-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | SIGNAL TRANSMISSION METHOD AND DEVICE |
| Publication number | Publication date |
|---|---|
| CN102791036A (en) | 2012-11-21 |
| Publication | Publication Date | Title |
|---|---|---|
| CN102791036B (en) | Transmit the method for Downlink Control Information, access device, subscriber equipment and system | |
| JP6976325B2 (en) | Cell identification information | |
| EP2868142B1 (en) | Sounding reference signal (srs) mechanism for intracell device-to-device (d2d) communication | |
| CN105827386B (en) | From transmission point receive/to terminal transmit control information method | |
| RU2604639C1 (en) | Method of processing an enhanced physical downlink control channel, device on side of network and user equipment | |
| US9025551B2 (en) | Data transmission method and apparatus in network supporting coordinated transmission | |
| US9326303B2 (en) | Device-to-device communication method and apparatus for use in wireless communication system | |
| CN101777940B (en) | Method, device and system for transmitting uplink information | |
| CN104170270B (en) | AF panel under the background of heterogeneous network with the cooperation transmission point using common transmission point identity | |
| EP2472940B1 (en) | Method and apparatus for performing channel measurement for cell | |
| US11101948B2 (en) | Data transmission method, terminal, and network device | |
| EP3002983B1 (en) | Control information transmission method, user equipment, and base station | |
| US20160366717A1 (en) | Signal Processing Method and Device | |
| CN102056309A (en) | Method and device for transmitting dedicated reference signals | |
| US20140016565A1 (en) | Communication system, base station apparatus, terminal apparatus, and communication method | |
| US20160112221A1 (en) | Method for ue and user equipment | |
| JP2014532350A (en) | Data transmission / reception method and apparatus in wireless communication system | |
| CN103546259B (en) | Transmission signal transmitting and receiving method, terminal and base station | |
| CN104025489B (en) | Control information processing method, terminal, and transmission point | |
| KR20210021066A (en) | Multi-branch NOMA wireless communication | |
| CN104796368B (en) | A kind of transmission of synchronizing information, detection method and user equipment | |
| CN102076055A (en) | Cross-carrier downlink control channel indicating method, system and evolution base station | |
| CN105263188B (en) | Pass through the information detecting method of synchronization channel transmissions information and synchronizing channel, device | |
| CN102045728A (en) | Method for allocating reference signals and base station | |
| CN110417528B (en) | D2D communication method and device |
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |