WO2021128370A1 - Procédé d'envoi et de réception d'informations et appareil - Google Patents

Procédé d'envoi et de réception d'informations et appareil Download PDF

Info

Publication number
WO2021128370A1
WO2021128370A1 PCT/CN2019/129572 CN2019129572W WO2021128370A1 WO 2021128370 A1 WO2021128370 A1 WO 2021128370A1 CN 2019129572 W CN2019129572 W CN 2019129572W WO 2021128370 A1 WO2021128370 A1 WO 2021128370A1
Authority
WO
WIPO (PCT)
Prior art keywords
beams
groups
beam groups
configuration information
information
Prior art date
Application number
PCT/CN2019/129572
Other languages
English (en)
Chinese (zh)
Inventor
张永平
汪沣
李铁
李宝金
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2019/129572 priority Critical patent/WO2021128370A1/fr
Publication of WO2021128370A1 publication Critical patent/WO2021128370A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Definitions

  • This application relates to the field of communications, and in particular to an information sending method, receiving method and device.
  • the fifth-generation wireless access system standard New Radio (NR) is based on multiple input multiple output (MIMO).
  • TRP Transmission Reception Point
  • UE user equipment
  • TRP Transmission Reception Point
  • CSI-RS channel state information reference signal
  • the terminal device After receiving the downlink signaling, the terminal device obtains and reports the precoding matrix indicator (PMI) information by measuring the received CSI-RS signal; The network device can determine the parameters used when sending data according to the PMI information reported by the terminal device, so that the spectrum efficiency can be improved.
  • PMI precoding matrix indicator
  • the network device can configure a codebook subset for the terminal device, that is, when the terminal device selects candidate beams in the codebook subset, it can only select multiple beams that have not been turned off. And the PMI information of the selected beam is fed back to the network device.
  • the purpose of the embodiments of the present application is to provide an information sending method, receiving method, and device, so as to realize that when the number of candidate beams is less than the requirement, feedback can still be performed to ensure communication performance.
  • this application provides an information sending method, including: obtaining codebook configuration information, the codebook configuration information includes codebook subset configuration information and beam number information L, and the codebook subset configuration information is used to indicate the first The number of dimensional antenna ports N 1 , the number of second-dimensional antenna ports N 2 , the supersampling parameters O 1 and O 2 , and whether each beam in the four first beam groups is a candidate beam, among which, the four first beam groups belong to O 1 O 2 first beam groups, and each of the 4 first beam groups contains N 1 N 2 beams, O 1 O 2 first beam groups are based on O 1 and O 2 1 O 2 N 1 N 2 beams are divided into, N 1 , N 2 , O 1 , O 2 , and L are all positive integers and L is greater than 1.
  • the number of candidate beams in the beam group is less than L, and the feedback information is determined.
  • the feedback information includes: the first feedback information of L1 candidate beams, and the L1 candidate beams belong to one of the O 1 O 2 second beam groups.
  • O 1 O 2 second beam group is divided into O 1 O 2 N 1 N 2 beams according to the offset; send feedback information.
  • the terminal device is allowed to report the feedback information of L1 beams, so that the network device can still obtain the feedback information of some beams, so that the feedback information of these beams is used for data transmission and the data transmission performance is guaranteed.
  • an embodiment of the present application provides an information receiving method, including: sending codebook configuration information, the codebook configuration information includes codebook subset configuration information and beam number information L, and the codebook subset configuration information is used to indicate The number of antenna ports in the first dimension N 1 , the number of antenna ports in the second dimension N 2 , the supersampling parameters O 1 and O 2 , and whether each beam in the 4 first beam groups is a candidate beam, among which, the 4 first beam groups Belongs to O 1 O 2 first beam groups, and each of the 4 first beam groups contains N 1 N 2 beams, and O 1 O 2 first beam groups are based on O 1 and O 2 Divide the O 1 O 2 N 1 N 2 beams into N 1 , N 2 , O 1 , O 2 , and L are all positive integers and L is greater than 1.
  • Receive feedback information where if O 1 O 2 is the first The number of candidate beams in each second beam group in the two beam groups is less than L, and the feedback information includes: first feedback information of L1 candidate beams, and L1 candidate beams belong to one of O 1 O 2 second beam groups
  • the second beam group, O 1 O 2 second beam group is divided into O 1 O 2 N 1 N 2 beams according to the offset.
  • the terminal device is allowed to report the feedback information of L1 beams, so that the network device can still obtain the feedback information of some beams, so that the feedback information of these beams is used for data transmission and the data transmission performance is guaranteed.
  • the embodiments of the present application provide a terminal device including a processing unit for obtaining codebook configuration information.
  • the codebook configuration information includes codebook subset configuration information and beam number information L.
  • the codebook subset configuration information is used for To indicate the number of antenna ports in the first dimension N 1 , the number of antenna ports in the second dimension N 2 , the supersampling parameters O 1 and O 2 , and whether each beam in the 4 first beam groups is a candidate beam, among which, 4 first
  • the beam groups belong to the O 1 O 2 first beam groups, and each of the 4 first beam groups contains N 1 N 2 beams, and the O 1 O 2 first beam groups are based on O 1 and O 2 divides O 1 O 2 N 1 N 2 beams into, N 1 , N 2 , O 1 , O 2 , and L are all positive integers and L is greater than 1.
  • the number of candidate beams in each second beam group is less than L, and the feedback information is determined.
  • the feedback information includes: first feedback information of L1 candidate beams, and L1 candidate beams belong to one of O 1 O 2 second beam groups
  • the second beam group, O 1 O 2 second beam group is divided into O 1 O 2 N 1 N 2 beams according to the offset; the communication unit is used to send feedback information.
  • an embodiment of the present application provides a network device, including a communication unit, configured to send codebook configuration information, the codebook configuration information includes codebook subset configuration information and beam number information L, and codebook subset configuration information It is used to indicate the number of antenna ports in the first dimension N 1 , the number of antenna ports in the second dimension N 2 , the supersampling parameters O 1 and O 2 , and whether each beam in the 4 first beam groups is a candidate beam, among which, the 4th A beam group belongs to O 1 O 2 first beam groups, and each of the 4 first beam groups includes N 1 N 2 beams, and O 1 O 2 first beam groups are based on O 1 And O 2 divides O 1 O 2 N 1 N 2 beams into, N 1 , N 2 , O 1 , O 2 , L are all positive integers and L is greater than 1; receive feedback information, where if O 1 O 2 in a second beam set of each of the second number of candidate beams in beam set is smaller than L, the feedback information comprising: L1
  • the feedback information further includes second feedback information
  • the second feedback information includes feedback information of L-L1 beams.
  • the L-L1 beams and the L1 beams belong to the same second beam group.
  • the L-L1 beams are the L-L1 beams in the O 1 O 2 second beam group that are indicated as not candidate beams by the codebook subset configuration information.
  • the total number of beams is L, so whether L1 is less than L or L1 is greater than or equal to L, the load of the PMI fed back by the terminal device is the same, which can effectively reduce the complexity of base station reception. Since the actual number of beams fed back by the terminal device is L instead of L1 effective beams, the PMI reconstructed by the network device is more matched with the actual channel, and therefore, the data transmission performance of the terminal device will be better.
  • the first feedback information includes linear combination coefficient information corresponding to L1 candidate beams.
  • the second feedback information includes linear combination coefficients corresponding to L-L1 beams.
  • the second feedback information is all zeros. At this time, whether L1 is less than L, or L1 is greater than or equal to L, the number of information bits of the PMI fed back by the terminal equipment is the same, which can effectively reduce the complexity of the terminal equipment, network equipment and system, and the information bits and the resources occupied are more At the same time, since the PMI information fed back by the terminal equipment does not include beams that can cause strong interference, the PMI reconstructed based on this feedback is used to transmit downlink data without causing strong interference between cells.
  • an embodiment of the present application provides an information sending method, including generating codebook configuration information, the codebook configuration information includes codebook subset configuration information and beam number information L, and the codebook subset configuration information is used to indicate the first The number of dimensional antenna ports N 1 , the number of second-dimensional antenna ports N 2 , the supersampling parameters O 1 and O 2 , and whether each beam in the four first beam groups is a candidate beam, among which, the four first beam groups belong to O 1 O 2 first beam groups, and each of the 4 first beam groups contains N 1 N 2 beams, O 1 O 2 first beam groups are based on O 1 and O 2 1 O 2 N 1 N 2 beams are divided into, where the codebook subset configuration information meets the following conditions: Among O 1 O 2 second beam groups, at least one of the second beam groups has a number of candidate beams greater than or equal to L, O 1 O 2 second beam group is divided into O 1 O 2 N 1 N 2 beams according to the offset, N 1 , N 2 , O 1
  • the network device restricts the codebook subset configuration information to ensure that the number of candidate beams of the terminal device is greater than or equal to L, so that the terminal device can correctly report the feedback information. There is no impact on the terminal equipment, so it will not increase the complexity of the terminal equipment, while ensuring data transmission performance.
  • the beams in the beam groups other than the four first beam groups in the O 1 O 2 first beam groups are all candidate beams.
  • the O 1 O 2 first beam groups are divided into O 1 O 2 N 1 N 2 beams according to O 1 and O 2 , specifically: O 1 O 2 first beam groups Each beam in any one of the first beam groups has the same supersampling parameter, and the beams in any two first beam groups in the O 1 O 2 first beam groups have different supersampling parameters.
  • the O 1 O 2 second beam group is divided into O 1 O 2 N 1 N 2 beams according to the offset, specifically: any one of the O 1 O 2 second beam groups
  • the beams in the second beam group have the same offset, and the beams in any two second beam groups in the O 1 O 2 second beam groups have different offsets.
  • an embodiment of the present application provides a network device, including a communication unit and a processing unit, for implementing the fifth aspect and possible design methods or functions.
  • the present application provides a communication device, including: a processor and a memory; the memory is used to store computer execution instructions, and when the device is running, the processor executes the computer execution instructions stored in the memory to enable the The device implements the above-mentioned aspects and possible design methods.
  • the present application provides a communication device, including: including units or means for executing each step of the above-mentioned aspects.
  • the present application provides a communication device including a processor and a communication interface.
  • the processor is configured to communicate with other devices through the communication interface and execute the methods of the foregoing aspects.
  • the processor includes one or more.
  • the present application provides a communication device including a processor, configured to be connected to at least one memory, and configured to call a program stored in the at least one memory to execute the methods of the foregoing aspects.
  • the at least one memory may be located inside the device or outside the device.
  • the processor includes one or more.
  • the present application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes the computer to execute the methods of the above aspects.
  • this application also provides a computer program product including instructions, which when run on a computer, causes the computer to execute the methods of the above-mentioned aspects.
  • the present application also provides a chip system, including a processor, configured to execute the methods of the foregoing aspects.
  • the present application also provides a communication system, including: a terminal device for executing any method of the foregoing first aspect and a network device for executing any method of the foregoing second or fifth aspect.
  • Figure 1 shows a schematic diagram of a communication system
  • Figure 2 shows a schematic diagram of the structure of a device
  • Figure 3 shows a schematic diagram of an information sending method
  • Figure 4 shows a schematic diagram of another information sending method
  • Figure 5 shows a schematic diagram of another device
  • Figure 6 shows a schematic diagram of another device
  • FIG. 1 shows a schematic diagram of a communication system to which the technical solution provided by the present application is applicable.
  • the communication system may include one or more network devices 100 (only one is shown) and connected to each network device 100.
  • FIG. 1 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solutions provided in this application.
  • the network device 100 may be a transmission reception point (TRP), a base station, a relay station, or an access point.
  • the network device 100 may be a network device in a 5G communication system or a network device in a future evolution network; it may also be a wearable device or a vehicle-mounted device. It can also be the base transceiver station (BTS) in the global system for mobile communications (GSM) or code division multiple access (CDMA) network, or broadband
  • the NB (NodeB) in wideband code division multiple access (WCDMA) may also be the eNB or eNodeB (evolutional NodeB) in long term evolution (LTE).
  • the network device 100 may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • cloud radio access network cloud radio access network, CRAN
  • the terminal device 200 may be a user equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, or a UE Devices, etc.
  • the access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks or terminals in the future evolution of public land mobile network (PLMN) networks, etc. .
  • PLMN public land mobile network
  • the network device 100 is a transmitter device and the terminal device 200 is a receiver device; in another possible implementation manner, the terminal device 200 is a transmitter device and the network device 100 is a receiver device.
  • the receiving end device determines the PMI information according to the reference signal such as CSI-RS transmitted by the transmitting end device and feeds it back to the transmitting end device.
  • the transmitting end device precodes the data to be transmitted according to the PMI information fed back by the receiving end device, and sends the precoded data to the receiving end device.
  • Type2 The basic principles of Type2 are as follows:
  • the terminal device selects the combination of L beams (represented by L orthogonal column vectors) in the discrete fourier transform (DFT) codebook according to the best eigenvector of the downlink channel (Eigenvector), and the linearity of this combination
  • the combination coefficient Linear Combination Coefficient, LCC
  • the terminal device needs to index the L beams and the quantized value of LCC (quantized according to the amplitude and phase respectively). ) Feedback to the base station.
  • the base sequence of the spatial beam of the Type2 codebook is composed of DFT vectors.
  • the Type2 codebook will use supersampling technology.
  • the so-called supersampling codebook is to control the phase scaling of the DFT to enable supersampling
  • the angle range of the beam corresponding to the latter codebook is set within a certain range. For example, the angle of the beam corresponding to the codeword in the normal DFT codebook is evenly distributed between 0 and 2 ⁇ .
  • the phase of the codeword is After dividing by the supersampling coefficient O, the angle of the beam corresponding to the codeword is only uniformly distributed between 0 and 2 ⁇ /O.
  • the CSI-RS parameters include port parameters (N 1 , N 2 ) and supersampling coefficients (O 1 , O 2 ), where N 1 represents the number of antenna ports in the first dimension, and N 2 represents the number of antenna ports in the second dimension.
  • the terminal device is configured with a planar antenna array in a polarization direction, the sizes are N 1 and N 2 , and the corresponding supersampling parameters are O 1 and O 2 . At this time, there are a total of N 1 O 1 N 2 O 2 beams.
  • the N 1 O 1 N 2 O 2 beams can be divided into different beam groups. Two methods of dividing beam groups are introduced below.
  • Method 1 According to the following formula 1, the N 1 O 1 N 2 O 2 beams are divided into O 1 O 2 first beam groups, or the first beam group satisfies the following formula 1.
  • r 1 0,1,...,O 1 -1
  • r 2 0,1,...,O 2 -1.
  • Method 2 Divide the N 1 O 1 N 2 O 2 beams into O 1 O 2 second beam groups according to the following formula 2. In other words, the second beam group satisfies the following formula 2.
  • the above formula 2 can be understood as grouping the O 1 O 2 N 1 N 2 beams according to the offset. That is, the N 1 N 2 beams with the same offset are divided into a group.
  • the N 1 N 2 beams having the same offset here means: the subscripts of the N 1 N 2 beams in the (q 1 , q 2 )th second beam group indicate (r 1 O 1 +q 1 , The second terms q 1 and q 2 in r 2 O 2 +q 2 ) are called beams Further, the offsets of the N 1 N 2 beams in the (q 1 , q 2 )-th second beam group are the same, and they are all (q 1 , q 2 ).
  • the 4 first beam groups are ⁇ V 0,0 ,V 1,0 ⁇ , ⁇ V 2,0 ,V 3,0 ⁇ , ⁇ V 4,0 ,V 5,0 ⁇ , ⁇ V 6,0 ,V 7,0 ⁇ , as shown in Table 2.
  • Second beam group (q1,q2) G 1 (q 1 ,q 2 )
  • the second beam group 0 (0, 0) ⁇ V 0,0 ,V 4,0 ⁇ Second beam group 1 (1, 0) ⁇ V 1,0 ,V 5,0 ⁇ Second beam group 2 (2, 0) ⁇ V 2,0 ,V 6,0 ⁇
  • the second beam group 3 (3, 0) ⁇ V 3,0 ,V 7,0 ⁇
  • the beams corresponding to the 16 first beam groups are shown in Table 4 below.
  • the 16 second beam groups are shown in Table 5.
  • the second beam group 6 (1, 2) ⁇ V 1,2 ,V 1,6 ,V 5,2 ,V 5,6 ⁇
  • sequence number of the first beam group and the sequence number of the second beam group are only for convenience of presentation, and do not constitute a limitation to the present application.
  • CBSR Codebook Subset Restriction
  • the network device reconstructs the PMI according to the L beam indexes fed back by the terminal device and the corresponding linear combination coefficient quantization value, and based on the reconstructed PMI, determines the precoding matrix used to send the data. Contains beams that can cause strong neighbor cell interference, so the downlink signal processed by the precoding matrix will not cause strong neighbor cell interference.
  • the process of CBSR is that network equipment sends codebook configuration information to terminal equipment through high-level signaling (RRC signaling), including codebook subset configuration information including B 1 and B 2 , and beam number information L, where B 1 indicates 4 A first beam group, B 2 is a bitmap bitmap, which is used to indicate the restriction status of each beam in the 4 first beam groups indicated by B 1 (for example, switch + amplitude limit).
  • RRC signaling high-level signaling
  • B 1 indicates 4 A first beam group
  • B 2 is a bitmap bitmap, which is used to indicate the restriction status of each beam in the 4 first beam groups indicated by B 1 (for example, switch + amplitude limit).
  • Each beam corresponds to 2 bits and is used to indicate one of the following four states: When the bit is "00", that is, when the maximum amplitude coefficient information is 0, the terminal device cannot select this beam, that is, the beam is not a candidate beam, or the beam is closed or restricted.
  • the maximum amplitude coefficient of the corresponding beam can be One of 1, that is, the beam is a candidate beam, or the beam is turned on, as shown in Table 6 below. It should be noted that even if the terminal equipment does not support the CBSR function through the capability parameter report, the base station can still set B 2 to "00" or "11" to restrict some beams that cause strong inter-cell interference from being candidate beams.
  • the beam quantity information L is used to instruct the terminal to report feedback information corresponding to the L beams.
  • the configuration information of the four first beam groups may be included.
  • the base station will include all four first beam groups in the codebook subset configuration information.
  • the number of bits occupied by the configuration signaling B 1 is 0.
  • the base station 2 If the base station 2 the first beam set of at least three four first beam set in all closed by the beam B, which is the first beam set of at least three in each beam corresponding bits are set to B 2
  • the beams in the first beam group ⁇ V 0,0 ,V 1,0 ⁇ , ⁇ V 2,0 ,V 3,0 ⁇ and ⁇ V 4,0 ,V 5,0 ⁇ are in B
  • the corresponding bits in 2 are all set to 0, or the first beam group ⁇ V 0,0 ,V 1,0 ⁇ , ⁇ V 2,0 ,V 3,0 ⁇ and ⁇ V 4,0 ,V 5,
  • the indication information of the maximum amplitude coefficient of the beam in 0 ⁇ is 0.
  • the terminal device can only select at most one candidate beam for PMI feedback in the second beam group 2 or the second beam group 3, and the configuration L of the base station for the terminal is 2, that is, the terminal device needs to feed back the feedback information of the 2 beams.
  • the terminal cannot determine how to perform feedback.
  • the network device cannot obtain the feedback information, it will not be able to make full use of the feedback information for data transmission, thereby affecting the data transmission performance. Similar problems also exist when the configuration parameters are based on other rows in Table 1.
  • a beam is turned off, the most significant factor of the beam indication information is set to 0, the beam B 2 in the corresponding bit is set to "00", The beam is not a candidate beam and can be replaced with each other.
  • the embodiment of the present application provides a method for sending information, which can realize correct feedback when the terminal does not have enough candidate beams.
  • An embodiment of the present invention provides a device, which may be a communication device, such as a terminal device 200 in the system shown in FIG. 1 or a network device 100 in the system shown in FIG. 1.
  • the device may include at least one processor 201. It may also include a memory 202, a transceiver 203, and a communication bus 204
  • the processor 201 is the control center of the device, and may be a processor or a collective name for multiple processing elements.
  • the processor 201 is a central processing unit (CPU), or a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processor
  • FPGA Field Programmable Gate Array
  • the processor 201 can execute various functions of the device by running or executing a software program stored in the memory 202 and calling data stored in the memory 202. Alternatively, the processor 201 may read or run a software program in a memory (not shown in FIG. 2) coupled with the processor 201 through the communication bus 204 or an interface circuit (not shown in FIG. 2) to execute the device Various functions.
  • the processor 201 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 2.
  • the device may include multiple processors, for example, the processor 201 and the processor 205 shown in FIG. 2.
  • processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the memory 202 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be Electrically Erasable Programmable Read-Only Memory (EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD-ROM) or other optical disc storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory 202 may exist independently and is connected to the processor 201 through a communication bus 204.
  • the memory 202 may also be integrated with the processor 201.
  • the memory 202 is used to store a software program for executing the solution of the present invention, and the processor 201 controls the execution.
  • the transceiver 203 is used for communication with the second device.
  • the transceiver 203 can also be used to communicate with communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (Wireless Local Area Networks, WLAN), and so on.
  • the transceiver 203 may include a receiving unit to implement a receiving function, and a sending unit to implement a sending function.
  • the communication bus 204 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 2, but it does not mean that there is only one bus or one type of bus.
  • the device structure shown in FIG. 2 does not constitute a limitation on the device, and may include more or fewer components than shown in the figure, or a combination of some components, or a different component arrangement.
  • the embodiments of the present application provide an information sending method and a receiving method, as shown in FIG. 3, including the following steps:
  • the network device 100 sends the codebook configuration information to the terminal device.
  • the codebook configuration information includes codebook subset configuration information and beam quantity information L, where L is an integer greater than 1.
  • the terminal device 200 receives the codebook configuration information.
  • the codebook subset configuration information is used to indicate the number of antenna ports in the first dimension N 1 and the number of antenna ports in the second dimension N 2 .
  • the codebook subset configuration information is also used to indicate the supersampling parameters O 1 and O 2 .
  • O 1 and O 2 have a corresponding relationship with N 1 and N 2 , such as the corresponding relationship shown in Table 1.
  • the terminal equipment can obtain O 1 and O 2 according to N 1 and N 2 and Table 1.
  • the codebook subset configuration information is also used to indicate whether each beam in the 4 first beam groups is a candidate beam, where the 4 first beam groups belong to the O 1 O 2 first beam groups, and the 4 first beam groups
  • Each first beam group in includes N 1 N 2 beams, and O 1 O 2 first beam groups are divided into N 1 N 2 O 1 O 2 beams according to formula 1.
  • each beam in any first beam group in O 1 O 2 first beam groups has the same supersampling parameter, and beams in any two first beam groups in O 1 O 2 first beam groups have Different supersampling parameters.
  • all the beams in the first beam group except for the foregoing four first beam groups among the O 1 O 2 first beam groups may be candidate beams.
  • the codebook configuration information is used to indicate the information of the codebook type, for example, the codebook type Type2.
  • the codebook subset configuration information includes the "n1-n2-codebookSubsetRestriction" parameter, which may specifically include any of the following parameters:
  • n1 is equivalent to N 1 in Table 1
  • n2 is equivalent to N 2 in Table 1. That is, n1 represents the number of antenna ports in the first dimension, and n2 represents the number of antenna ports in the second dimension.
  • the "n1-n2-codebook subset restriction" parameters collectively indicate the aforementioned B 1 and B 2 .
  • the number of bits occupied by the aforementioned B 2 is divided into 4 groups, which correspond to the aforementioned 4 first beam groups respectively.
  • the number of bits occupied by the above B 2 is divided into 4 groups, and according to the instructions of B 1 , corresponding to the 4 first beam groups, with the "n1-n2-codebook subset limit" parameter as "two-one"
  • B 1 is empty, and among the 16 bits occupied by B 2 , the first 4 bits represent the configuration information of beams in beam group 0, and the following bits represent the configuration information of beams in beam groups 1 to 3 in turn.
  • the embodiment of the present application does not specifically limit the value of L.
  • L represents the number of beams with the same offset, that is, the terminal device needs to feed back information about L beams with the same offset. Because the beams with the same offset have the best orthogonality, the interference is the least and the performance is the best. it is good.
  • the network device 100 needs to obtain the foregoing codebook configuration information before performing S301.
  • the specific obtaining method may be generated by the network device 100 itself, or obtained by the network device 100 from other nodes, which is not limited in the embodiment of the present application.
  • the actions sent in step S301 can be executed by the transceiver 203 in the network device 100, and correspondingly, the actions received can be executed by the transceiver 203 in the terminal device 200.
  • the terminal device 200 determines feedback information, where the feedback information includes first feedback information of L1 candidate beams, where the L1 candidate beams belong to one of the O 1 O 2 second beam groups, and L1 Less than L. .
  • the O 1 O 2 second beam group is divided into N 1 N 2 O 1 O 2 beams according to the above formula 1.
  • O 1 O 2 of the second beam set to any one in a second beam set of each beam have the same bias
  • the beam 1 O 2 O second beam set any two of the second beam set Have different biases.
  • O 1 O 2 first beam groups and O 1 O 2 second beam groups are divided into N 1 N 2 O 1 O 2 beams according to different rules, and satisfy the above formulas respectively. 1 and formula 2.
  • the terminal device measures the reference signal (such as CSI) of the downlink channel to obtain the measurement result of the downlink channel, and then determines the feedback information according to the result.
  • the reference signal such as CSI
  • the terminal device determines according to the codebook configuration information that the number of candidate beams in each second beam group of O 1 O 2 second beam groups is less than L, and then the terminal device obtains the number of candidate beams according to the measurement result.
  • One second beam group is selected from the O 1 O 2 second beam groups, and the feedback information is determined to be the first feedback information of the L1 candidate beams included in the second beam group.
  • the first feedback feedback information includes indication information of L1 candidate beams, such as beam identifiers and indexes.
  • the linear combination coefficient information corresponding to each beam in the L1 candidate beams may also be included, for example, the quantized value of the linear combination coefficient.
  • V 6,0 belongs to the second beam group 2, namely ⁇ V 2,0 ,V 6,0 ⁇
  • V 7,0 belongs to the second beam group 3, namely ⁇ V 3,0 ,V 7,0 ⁇
  • the two beams V 6,0 and V 7,0 belong to different second beam groups.
  • V 6,0 in the second beam group 2 can be used as candidate beams
  • V 7, in the second beam group 3 0 can be used as a candidate beam, therefore, the number of candidate beams with the same offset is only 1.
  • a first feedback information comprises information indicating or V 7,0 V 6,0; and further comprising a linear combination of the coefficient information V 6,0 V 7,0 or corresponding.
  • O 1 O 2 16
  • the 16 first beam groups and the 16 second beam groups are as described in the foregoing and Table 5 and Table 6.
  • the bit value of is "00", which means that the beams in the 4 first beam groups cannot be used as candidate beams.
  • the terminal equipment can only report the feedback information of the beams with the same offset in the feedback information, the remaining 12 candidate beams of the first beam group are reflected in each of the second beam groups in Table 6.
  • the first feedback information includes 3 beams with the same offset of a second beam group selected by the terminal. If the second beam group 10 is selected, the first feedback information includes beams V 2,6 , V 6,2 ,V 6,6 indication information; It also contains the linear combination coefficient information corresponding to the beams V 2,6 , V 6,2 , and V 6,6.
  • L1 is all less than L, that is, the number of beams that can be fed back by the terminal device is less than the number of beams reported by the base station configured for the terminal device.
  • the terminal device is allowed to report only the feedback information of L1 beams, so that the network device can still obtain the feedback information of some beams, so that the feedback information of these beams can be used for data transmission to ensure data transmission performance.
  • the feedback information determined by the terminal device further includes the second feedback information.
  • the second feedback information includes feedback information of L-L1 beams.
  • the feedback information of the L-L1 beams included in the second feedback information are all set to 0, that is, the terminal device fills the feedback information of the L-L1 beams with 0, but it is guaranteed that the feedback information still contains L Feedback information of beam waves. in order to fulfill.
  • the number of information bits of the PMI fed back by the terminal equipment is the same, which can effectively reduce the complexity of the terminal equipment, network equipment and system, and the information bits are more matched with the occupied resources.
  • the use of PMI reconstructed based on this feedback to transmit downlink data will not cause strong interference between cells.
  • the aforementioned L-L1 beams and L1 candidate beams belong to the same second beam group, and the L-L1 beams are configured by B2 as not candidate beams.
  • the terminal device in addition to reporting the feedback information of the L1 candidate beams, the terminal device also reports the feedback information of the L-L1 closed beams.
  • the second feedback information includes indication information of the beam that is turned off, such as the identifier and index of the beam. It may also include the linear combination coefficient information corresponding to each beam of L-L1, for example, the quantized value of the corresponding linear combination coefficient.
  • the beam groups and the 4 second beam groups are shown in Table 2 and Table 3. If the value of the bit occupied by B2 indicates the 4 first beam groups ⁇ V 0,0 ,V 1,0 ⁇ , ⁇ V 2,0 ,V 3,0 ⁇ , ⁇ V 4,0 ,V 5,0 ⁇ , ⁇ V 6,0 ,V 7,0 ⁇ in the first three first beam groups (that is, the first beam groups 0 to 3 in Table 2), the corresponding bit value in B2 is "00" , Which indicates that the beams in the first three beam groups are not candidate beams.
  • the terminal device may also report the second feedback information of the V 2,0 in the second beam group 2.
  • the "n1-n2-codebook subset limit” parameter is similar when other values are used, and will not be repeated here.
  • This solution can be understood as that when the terminal device determines that the number of candidate beams with the same offset is less than L, the terminal device can ignore the restriction on the beam in the codebook subset configuration information.
  • the total number of beams is L, so whether L1 is less than L or L1 is greater than or equal to L, the load of the PMI fed back by the terminal device is the same, which can effectively reduce the complexity of base station reception. Since the actual number of beams fed back by the terminal device is L instead of L1 effective beams, the PMI reconstructed by the network device is more matched with the actual channel, and therefore, the data transmission performance of the terminal device will be better.
  • This step S302 may be executed by the processor 201 and/or the processor 205 in the terminal device 200.
  • the terminal device 200 sends feedback information, and the corresponding network device 100 receives the feedback information.
  • the terminal device sends feedback information on the resources allocated by the network device to the terminal device.
  • the sending action in step S303 can be executed by the transceiver 203 in the terminal device 200, and correspondingly, the receiving action can be executed by the transceiver 203 in the network device 100.
  • the information sending and receiving methods provided in the embodiments of the present application solve the problem that the terminal device cannot feedback when the number of candidate beams L1 is less than L.
  • the network device can obtain partial or all feedback information of the beams, so that the feedback information of these beams is used for data transmission, and the data transmission performance is guaranteed.
  • the embodiment of the present application also provides a method, as shown in FIG. 4, which includes the following steps:
  • the codebook configuration information includes codebook subset configuration information and beam number information L.
  • the codebook subset configuration information is used to indicate the number of antenna ports in the first dimension N 1 and the number of antenna ports in the second dimension N 2.
  • Supersampling parameters O 1 and O 2 and whether each beam in the 4 first beam groups is a candidate beam, among which, 4 first beam groups belong to O 1 O 2 first beam groups, and 4 first beam groups
  • Each first beam group in the beam group contains N 1 N 2 beams, and the O 1 O 2 first beam groups are divided into O 1 O 2 N 1 N 2 beams according to the O 1 and O 2 ,
  • the codebook subset configuration information satisfies the following conditions:
  • the number of candidate beams in at least one second beam group is greater than or equal to L, and the O 1 O 2 second beam groups are According to the offset, the O 1 O 2 N 1 N 2 beams are divided into N 1 , N 2 , O 1 , O 2 , and
  • the number of candidate beams in at least one second beam group is 2.
  • the corresponding bits in B2 cannot be "00" at the same time.
  • This step S401 may be executed by the processor 201 and/or the processor 205 in the network device 100.
  • the network device 100 sends codebook configuration information.
  • the terminal device 200 receives the codebook configuration information.
  • the action sent in step S402 can be executed by the transceiver 203 in the network device 100, and correspondingly, the action received can be executed by the transceiver 203 in the terminal device 200.
  • the terminal device 200 sends feedback information.
  • the network 100 receives feedback information.
  • This step is optional.
  • the action sent in step S403 can be executed by the transceiver 203 in the terminal device 200, and correspondingly, the action received can be executed by the transceiver 203 in the network device 100.
  • the network device restricts the codebook subset configuration information to ensure that the number of candidate beams of the terminal device is greater than or equal to L, so that the terminal device correctly reports the feedback information. There is no impact on the terminal equipment, so it will not increase the complexity of the terminal equipment, while ensuring data transmission performance.
  • Figure 5 shows a possible structure diagram of a device.
  • the device may be a communication device. Specifically, it may be the network device 100 involved in the foregoing embodiment, or may be the terminal device 200 involved in the foregoing embodiment. As shown in Figure 5, the device includes a processing unit 501 and a communication unit 502.
  • the processing unit 501 is configured to support the terminal device 200 to perform step S302 in the foregoing embodiment, and the network device 100 to perform step S401 in the foregoing embodiment and/or other processes used in the technology described herein.
  • the communication unit 502 is configured to support the network device 100 and the terminal device 200 to perform steps S301, S303, steps S402, and S403 in the foregoing embodiment, and/or other processes used in the technology described herein.
  • FIG. 6 shows a schematic structural diagram of a device.
  • the device may be the network device 100 involved in the above-mentioned embodiment, or the terminal device 200 involved in the above-mentioned embodiment.
  • the device includes: a processing module 601 and a communication module 602.
  • the processing module 601 is used to control and manage the actions of the device, for example, to perform the steps performed by the processing unit 501 described above, and/or to perform other processes of the technology described herein.
  • the communication module 602 is configured to perform the steps performed by the above-mentioned communication unit 502, and support the interaction between the device and other devices, such as the interaction between the network device 100 and the terminal device 200.
  • the device may further include a storage module 603, and the storage module 603 is used to store program codes and data of the device.
  • processing module 601 may be a processor
  • communication module 602 may be a transceiver
  • storage module 603 may be a memory
  • At least one refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one (piece, species) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or Multiple.
  • Multiple refers to two or more than two, and other quantifiers are similar.
  • a device means to one or more such devices.
  • the disclosed information sending method, receiving method, and device can be implemented in other ways.
  • the communication device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components or The modules can be combined or integrated into another device, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, communication devices or units or modules, and may be in electrical, mechanical or other forms.
  • the units described as separate parts may or may not be physically separate.
  • the parts displayed as a unit or module may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of a software product, and the software product is stored in a storage medium. It includes several instructions to make a device (may be a single-chip microcomputer, a chip, etc.) or a processor execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente demande ont trait au domaine technique des communications et plus particulièrement à un procédé et à un dispositif de communication. Le procédé comprend : un dispositif terminal qui obtient des informations de configuration de livre de codes, les informations de configuration de livre de codes comprenant des informations de configuration de sous-ensemble de livre de codes et L informations de nombre de faisceaux, les informations de configuration de sous-ensemble de livre de codes étant utilisées pour indiquer si des faisceaux dans quatre premiers groupes de faisceaux sont des faisceaux candidats, les quatre premiers groupes de faisceaux appartenant à O1O2 premiers groupes de faisceaux, N1, N2, O1, O2 et L étant tous des nombres entiers positifs et L étant supérieur à 1 ; si le nombre de faisceaux candidats dans chaque second groupe de faisceaux de O1O2 seconds groupes de faisceaux est inférieur à L, le dispositif terminal qui détermine des informations de rétroaction, les informations de rétroaction comprenant L1 premières informations de rétroaction de faisceaux candidats, et les L1 faisceaux candidats appartenant à un second groupe de faisceaux parmi les O1O2 seconds groupes de faisceaux ; le dispositif terminal qui envoie les informations de rétroaction. Dans le procédé, lorsque le nombre L1 de faisceaux candidats est inférieur à L, le dispositif terminal peut également rapporter correctement les informations de rétroaction afin d'assurer l'efficacité de la transmission de données.
PCT/CN2019/129572 2019-12-28 2019-12-28 Procédé d'envoi et de réception d'informations et appareil WO2021128370A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/129572 WO2021128370A1 (fr) 2019-12-28 2019-12-28 Procédé d'envoi et de réception d'informations et appareil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/129572 WO2021128370A1 (fr) 2019-12-28 2019-12-28 Procédé d'envoi et de réception d'informations et appareil

Publications (1)

Publication Number Publication Date
WO2021128370A1 true WO2021128370A1 (fr) 2021-07-01

Family

ID=76573559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/129572 WO2021128370A1 (fr) 2019-12-28 2019-12-28 Procédé d'envoi et de réception d'informations et appareil

Country Status (1)

Country Link
WO (1) WO2021128370A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104822147A (zh) * 2014-01-30 2015-08-05 上海贝尔股份有限公司 用于x2信令的方法和设备
CN106470052A (zh) * 2015-08-14 2017-03-01 财团法人工业技术研究院 动态波束形成方法和使用所述方法的基站和用户设备
CN108352876A (zh) * 2015-07-21 2018-07-31 三星电子株式会社 用于高级无线通信的高秩码本
WO2019047965A1 (fr) * 2017-09-11 2019-03-14 Qualcomm Incorporated Conception de restriction de sous-ensemble de livre de codes pour mimo

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104822147A (zh) * 2014-01-30 2015-08-05 上海贝尔股份有限公司 用于x2信令的方法和设备
CN108352876A (zh) * 2015-07-21 2018-07-31 三星电子株式会社 用于高级无线通信的高秩码本
CN106470052A (zh) * 2015-08-14 2017-03-01 财团法人工业技术研究院 动态波束形成方法和使用所述方法的基站和用户设备
WO2019047965A1 (fr) * 2017-09-11 2019-03-14 Qualcomm Incorporated Conception de restriction de sous-ensemble de livre de codes pour mimo

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SAMSUNG: "Codebook subset restriction for advanced CSI codebook", 3GPP DRAFT; R1-1801909 CODEBOOK SUBSET RESTRICTION FOR ADVANCED CSI CODEBOOK, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20180226 - 20180302, 16 February 2018 (2018-02-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051397055 *

Similar Documents

Publication Publication Date Title
WO2020156103A1 (fr) Procédé et dispositif de rétroaction d'informations
WO2021008477A1 (fr) Procédé et dispositif de traitement de précodage
CN113746573B (zh) 一种信道测量方法及装置
EP3435553A1 (fr) Procédé et dispositif pour envoyer ou recevoir des informations d'état de canal
US11063649B2 (en) Encoding of enhanced type II channel state information
US11405930B2 (en) Measurement method, network device, and terminal device
WO2022002079A1 (fr) Procédé et appareil de détermination de matrice de précodage
WO2021017571A1 (fr) Procédé et dispositif d'indication de coefficients de fusion d'espace et de fréquence
US20220408288A1 (en) Channel state information measurement method and apparatus
WO2019137445A1 (fr) Procédé et appareil de mesure d'informations d'état de canal
US10742294B2 (en) Channel state information reporting method, channel state informtion reading method, and related device
WO2020108637A1 (fr) Procédé et appareil de configuration de sondage de canal
BR112021007889A2 (pt) método de indicação de vetor de pré-codificação, método de determinação de vetor de pré-codificação, e aparelho de comunicações
US11057085B2 (en) Codebook subset restriction method
US20190334595A1 (en) Communication method, apparatus, and system
CN110868245B (zh) 信息传输方法及设备
WO2021159324A1 (fr) Rapport d'informations d'état de canal
US10897293B2 (en) Method for determining precoding matrix set and transmission apparatus
WO2021128370A1 (fr) Procédé d'envoi et de réception d'informations et appareil
JP2024530013A (ja) チャネル情報フィードバック方法および通信装置
WO2020155116A1 (fr) Procédé de rapport de pmi et appareil de communication
WO2023143086A1 (fr) Procédé de transmission, appareil et support de stockage
WO2017193278A1 (fr) Procédé de configuration pour csi-rs, procédé et dispositif de rétroaction pour csi, et système de communication
WO2024169544A1 (fr) Procédé et appareil de transmission d'informations, et terminal et dispositif de réseau
CN115333587B (zh) 类型ⅱ端口选择码本的反馈、接收方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19957645

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19957645

Country of ref document: EP

Kind code of ref document: A1