WO2021128370A1 - Information sending method, receiving method and apparatus - Google Patents

Abstract

The embodiments of the present application relate to the field of communications, and disclosed are a communication method and device. The method comprises: a terminal device obtains codebook configuration information, wherein the codebook configuration information comprises codebook subset configuration information and beam number information L, the codebook subset configuration information is used to indicate whether beams in four first beam groups are candidate beams, the four first beam groups belong to O1O2 first beam groups, N1, N2, O1, O2, and L are all positive integers and L is greater than 1; if the number of candidate beams in each second beam group of O1O2 second beam groups is less than L, then the terminal device determines feedback information, wherein the feedback information comprises first feedback information of L1 candidate beams, and the L1 candidate beams belong to one second beam group among the O1O2 second beam groups; and the terminal device sends the feedback information. In the method, when the number of candidate beams L1 is less than L, the terminal device may also correctly report the feedback information to ensure data transmission performance.

Description

Information sending method, receiving method and device Technical field

This application relates to the field of communications, and in particular to an information sending method, receiving method and device.

Background technique

The fifth-generation wireless access system standard New Radio (NR) is based on multiple input multiple output (MIMO). In order to improve downlink performance, it is determined by the Transmission Reception Point (TRP) Or network equipment to terminal equipment or user equipment (user equipment, UE) link performance, can use closed-loop MIMO working mode, specifically, the network equipment sends channel state information reference signal (channel state information-reference signal, CSI-RS) ), and notify the terminal device to perform downlink channel measurement through downlink signaling. 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.

In the prior art, there are single-panel type 1 (Type1 single panel, Type1 SP), multi-panel type 1 (Type1 multiple panel, Type1MP), type 2 (Type2), and port selection type 2 (Type2 port selection, Type2 PS). ) And many other PMI codebook types.

For Type 2, in order to limit the level of inter-cell interference, 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.

However, when there are not enough candidate beams due to the configuration of the codebook subset, how the terminal device feeds back the PMI information is a problem to be solved urgently.

Summary of the invention

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.

In the first aspect, 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. If each of the O ₁ O ₂ second beam groups is second 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.

Through this method, 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.

In a second aspect, 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.}

Through this method, 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.

In the third aspect, 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. If O ₁ O _{2 is} in the second beam group 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.

In a fourth aspect, 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 of first feedback information candidate beams, L1 candidate beams belonging O ₁ O ₂ second beam set One of the second beam groups in the O ₁ O ₂ second beam group is divided into _{O 1} O ₂ N ₁ N _{2 beams according to the offset.}

In a possible design, the feedback information further includes second feedback information, and the second feedback information includes feedback information of L-L1 beams.

In one possible design, the L-L1 beams and the L1 beams belong to the same second beam group.

In a possible design, 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. In the feedback information reported by the terminal at this time, 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.

In a possible design, the first feedback information includes linear combination coefficient information corresponding to L1 candidate beams.

In a possible design, the second feedback information includes linear combination coefficients corresponding to L-L1 beams.

In one possible design, 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.

In a fifth aspect, 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 , O ₂ , L are all positive integers and L is greater than 1. Send codebook configuration information. 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.

In a possible design, 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.}

In a possible design, 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.}

In a possible design, 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.}

In the sixth aspect, 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.

In a seventh aspect, 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.

In an eighth aspect, the present application provides a communication device, including: including units or means for executing each step of the above-mentioned aspects.

In a ninth aspect, 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.

In a tenth aspect, 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. And the processor includes one or more.

In an eleventh aspect, 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.

In the twelfth aspect, 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.

In a thirteenth aspect, the present application also provides a chip system, including a processor, configured to execute the methods of the foregoing aspects.

In a fourteenth aspect, 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.

Description of the drawings

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

Detailed ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

Figure 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. One or more terminals 200. 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.

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. .

In the communication system shown in FIG. 1, multiple antennas can be deployed on the network device 100 and the terminal device 200, and MIMO is used for communication, which significantly improves the performance of the wireless communication system. In some implementation manners, 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.

Referring to FIG. 1, in the communication process, 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.

In the prior art, there are single-panel type 1 (Type1 single panel, Type1 SP), multi-panel type 1 (Type1 multiple panel, Type1 MP), type 2 (Type2), and port selection type 2 (Type2 port selection, Type2). PS) and many other PMI codebook types.

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) makes the L beams the closest to the best Eigenvector after linear combination. 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. In order to improve the feedback accuracy of the codebook, 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 2π. When 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 2π/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. In other words, 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 corresponding relationship between port parameters (N ₁ , N ₂ ) and oversampling coefficients (O ₁ , O ₂ ) is shown in Table 1 below:

Table 1

According to different methods, 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.

Among them, r ₁ =0,1,...,O ₁ -1, r ₂ =0,1,...,O ₂ -1.

Since O ₁ and O ₂ are super-sampling parameters, the above formula 1 can be understood as grouping _{O 1} O ₂ N ₁ N _{2 beams according to the super-sampling parameters.}

_{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.

Among them, q ₁ ∈{0,1,...O ₁ -1}, q ₂ ∈{0,1,...O ₂ -1}.

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 ).

As shown in the first row of Table 1, the number of CSI-RS antenna ports is 4, (N ₁ ,N2)=(2,1), (O ₁ ,O ₂ )=(4,1), and O ₁ O ₂ N ₁ N _{2 beams are divided into O 1} O ₂ =4 first beam groups according to Formula 1 in Method 1 (ie supersampling parameters), and each first beam group contains N ₁ N ₂ ＝2 beams , 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. Divide the O ₁ O ₂ N ₁ N _{2 beams into O 1} O ₂ =4 second beam groups according to Formula 2 in Method 2 (ie, offset), and each second beam group contains N ₁ N ₂ ＝ 2 beams. Figure 3 shows the grouping results, where 4 beams with the same "(q1,q2)" belong to a second beam group, for example, the second beam group is {V _0,0 ,V _4,0 }, { V _1,0 ,V _5,0 }, {V _2,0 ,V _6,0 }, {V _6,0 ,V _7,0 }, as shown in Table 3.

Table 2

First beam group	(r1,r2)	G(r 1 ,r 2 )
First beam group 0	(0, 0)	{V 0,0 ,V 1,0 }
First beam group 1	(1, 0)	{V 2,0 ,V 3,0 }
First beam group 2	(2, 0)	{V 4,0 ,V 5,0 }
First beam group 3	(3, 0)	{V 6,0 ,V 7,0 }

table 3

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 }

Similarly, as shown in the second row of Table 2 above, assuming that the number of CSI-RS antenna ports is 8, (N ₁ ,N2)=(2,2), (O ₁ ,O ₂ )=(4,4), N ₁ N ₂ O ₁ O ₂ beams are divided into O ₁ O ₂ =16 first beam groups according to Formula 1, and each first beam group contains N ₁ N ₂ =4 beams. According to the formula, it can also be divided into O ₁ O ₂ =16 second beam groups, and each second beam group contains N ₁ N ₂ =4 beams. The beams corresponding to the 16 first beam groups are shown in Table 4 below.

Table 4

First beam group	(r1,r2)	G(r 1 ,r 2 )
First beam group 0	(0, 0)	{V 0,0 ,V 0,1 ,V 1,0 ,V 1,1 }
First beam group 1	(0, 1)	{V 0,2 ,V 0,3 ,V 1,2 ,V 1,3 }
First beam group 2	(0, 2)	{V 0,4 ,V 0,5 ,V 1,4 ,V 1,5 }
First beam group 3	(0, 3)	{V 0,6 ,V 0,7 ,V 1,6 ,V 1,7 }
First beam group 4	(1, 0)	{V 2,0 ,V 2,1 ,V 3,0 ,V 3,1 }
First beam group 5	(1, 1)	{V 2,2 ,V 2,3 ,V 3,2 ,V 3,3 }
First beam group 6	(1, 2)	{V 2,4 ,V 2,5 ,V 3,4 ,V 3,5 }
First beam group 7	(1, 3)	{V 2,6 ,V 2,7 ,V 3,6 ,V 3,7 }
The first beam group 8	(2, 0)	{V 4,0 ,V 4,1 ,V 5,0 ,V 5,1 }
First beam group 9	(2, 1)	{V 4,2 ,V 4,3 ,V 5,2 ,V 5,3 }
First beam group 10	(2, 2)	{V 4,4 ,V 4,5 ,V 5,4 ,V 5,5 }
The first beam group 11	(2, 3)	{V 4,6 ,V 4,7 ,V 5,6 ,V 5,7 }
The first beam group 12	(3, 0)	{V 6,0 ,V 6,1 ,V 7,0 ,V 7,1 }
The first beam group 13	(3, 1)	{V 6,2 ,V 6,3 ,V 7,2 ,V 7,3 }
First beam group 14	(3, 2)	{V 6,4 ,V 6,5 ,V 7,4 ,V 7,5 }
First beam group 15	(3, 3)	{V 6,6 ,V 6,7 ,V 7,6 ,V 7,7 }

The 16 second beam groups are shown in Table 5.

table 5

Second beam group	(q1,q2)	G 1 (q 1 ,q 2 )
The second beam group 0	(0, 0)	{V 0,0 ,V 0,4 ,V 4,0 ,V 4,4 }
Second beam group 1	(0, 1)	{V 0,1 ,V 0,5 ,V 4,1 ,V 4,5 }
Second beam group 2	(0, 2)	{V 0,2 ,V 0,6 ,V 4,2 ,V 4,6 }
The second beam group 3	(0, 3)	{V 0,3 ,V 0,7 ,V 4,3 ,V 4,7 }
The second beam group 4	(1, 0)	{V 1,0 ,V 1,4 ,V 5,0 ,V 5,4 }
The second beam group 5	(1, 1)	{V 1,1 ,V 1,5 ,V 5,1 ,V 5,5 }
The second beam group 6	(1, 2)	{V 1,2 ,V 1,6 ,V 5,2 ,V 5,6 }
The second beam group 7	(1, 3)	{V 1,3 ,V 1,7 ,V 5,3 ,V 5,7 }
The second beam group 8	(2, 0)	{V 2,0 ,V 2,4 ,V 6,0 ,V 6,4 }
Second beam group 9	(2, 1)	{V 2,1 ,V 2,5 ,V 6,1 ,V 6,5 }
The second beam group 10	(2, 2)	{V 2,2 ,V 2,6 ,V 6,2 ,V 6,6 }
The second beam group 11	(2, 3)	{V 2,3 ,V 2,7 ,V 6,3 ,V 6,7 }
The second beam group 12	(3, 0)	{V 3,0 ,V 3,4 ,V 7,0 ,V 7,4 }
The second beam group 13	(3, 1)	{V 3,1 ,V 3,5 ,V 7,1 ,V 7,5 }
Second beam group 14	(3, 2)	{V 3,2 ,V 3,6 ,V 7,2 ,V 7,6 }
The second beam group 15	(3, 3)	{V 3,3 ,V 3,7 ,V 7,3 ,V 7,7 }

The other lines are similar and will not be repeated here.

It should be noted that the 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.

Since the same frequency band is reused between adjacent cells, inter-cell interference is a natural problem in cellular networks. In order to solve the above problems, a technology called Codebook Subset Restriction (CBSR) is introduced into the Type2 codebook. The basic idea is to reduce certain beams that may cause strong interference through codebook subset restriction. Turn off, so when the terminal device selects the candidate beam, it can only select the beam that has not been turned off, and feed back the PMI information. At this time, the L beams fed back by the terminal device will not cause serious adjacent cell interference. 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).} 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. When the bits are other values, 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.

Table 6

In the codebook subset configuration information, for any row in Table 1 above, the configuration information of the four first beam groups may be included.

As shown in the first row of Table 1, the number of CSI-RS antenna ports is 4, (N ₁ ,N2)=(2,1), (O ₁ ,O ₂ )=(4,1), L=2 as For example, when doing CBSR configuration, the base station will include all four first beam groups in the codebook subset configuration information. At this time, the number of bits occupied by the _{configuration signaling B 1 is 0.} 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 When "00", for example, 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. At this time, only {V _6,0 ,V _7,0 } two beams can be used as candidate beams. It can be seen from the above that the _{two beams {V 6,0} ,V _7,0 } belong to different second beam groups, that is, belong to the second beam group 2 and the second beam group 3 respectively. Therefore, 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. In the prior art, the terminal cannot determine how to perform feedback. Furthermore, if 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.

It is noted that, in various embodiments of the present application, without special description, 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. As shown in FIG. 2, 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 following describes the components of the device in detail with reference to Figure 2:

The processor 201 is the control center of the device, and may be a processor or a collective name for multiple processing elements. For example, 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 For example: one or more microprocessors (digital signal processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA).

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.

In a specific implementation, as an embodiment, the processor 201 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 2.

In specific implementation, as an embodiment, the device may include multiple processors, for example, the processor 201 and the processor 205 shown in FIG. 2. Each of these 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.

Wherein, 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. Of course, 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. 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:

S301. 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. Correspondingly, the terminal device 200 receives the codebook configuration information.

Specifically, 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 . Specifically, 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.} For example, _{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.

It is understandable that 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.}

In a possible implementation manner, the codebook configuration information is used to indicate the information of the codebook type, for example, the codebook type Type2.

In a possible implementation, the codebook subset configuration information includes the "n1-n2-codebookSubsetRestriction" parameter, which may specifically include any of the following parameters:

Each item above corresponds to one row in Table 1. For example, “two-one” corresponds to the first row in Table 1 (the number of ports is equal to 4), and “two-two” corresponds to the second row in Table 1 (the number of ports). Equal to 8), etc. Among them, n1 is equivalent to N ₁ in Table 1, and 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 . For example, when the "n1-n2-codebook subset limit" parameter is "two-one", this parameter occupies 16 bits, where B ₂ needs to be occupied: 2 bits per beam * number of beams per beam group * number of beam groups 4 = 2*N ₁ N ₂ *4=2*2*4=16 bits, that is, at this time, B ₁ does not occupy bits, or that B ₁ is empty. Similarly, when the "n1-n2-codebook subset limit" parameter is "two-two", this parameter occupies 43 bits, where B ₂ needs to be occupied: 2 bits per beam * number of beams per beam group * number of beam groups 4=2*N ₁ N ₂ *4=2*4*4=32 bits, that is, B ₁ occupies 11 bits at this time.

Correspondingly, 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.

Correspondingly, 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" As an example, 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. For the specific meaning of the different values of 2 bits corresponding to each beam, please refer to Table 6 and related explanations above, and will not be repeated here.

The beam quantity information L represents the number of beams included in the feedback information configured by the network device for the terminal device, such as L=2, 3, or 4, etc. The embodiment of the present application does not specifically limit the value of L. Further, 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.

In a possible implementation, 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.

S302. 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. .

Specifically, 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. For example, O ₁ O ₂ of the second beam set to any one in a second beam set of each beam have the same bias, and the beam ₁ O ₂ O second beam set any two of the second beam set Have different biases.

According to the above description, it can be understood that the 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.

Specifically, 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.

In a possible implementation manner, 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.

In a possible implementation manner, 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.

Take the "n1-n2-codebook subset limit" parameter as "two-one", L=2 as an example, at this time, O ₁ O ₂ =4, 4 first beam groups and 4 second beam groups 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. At this time, only the first beam group 3, that is, beams in {V _6,0 ,V _7,0 } can be used as candidate beams.

Since 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 }, namely The _{two beams V 6,0} and V _7,0 belong to different second beam groups. At this time, only V _6,0 in the second beam group 2 can be used as candidate beams, and only 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. According to the measurement results, the terminal device selects a second beam group from the second beam group 2 and the second beam group 3, and determines to feed back the feedback information of L1=1 candidate beams in the selected second beam group, that is, the first One feedback information contains only one beam feedback information, V _6,0 feedback information or V _7,0 feedback information. Accordingly, 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.

Take the "n1-n2-codebook subset limit" parameter as "two-two" and L=4 as an example. At this time, O ₁ O ₂ =16, and the 16 first beam groups and the 16 second beam groups are as described in the foregoing and Table 5 and Table 6. When L=4, and the value of the 32 bits occupied by B2 indicates that the beams in the 4 beam groups (such as the first beam group 0, 1, 4, 5 in Table 4) correspond to the beams in B2 The bit value of is "00", which means that the beams in the 4 first beam groups cannot be used as candidate beams. At this time, only 16-4=12 beams in the first beam group can be used as candidate beams. However, since 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. There are 3 candidate beams. As shown in Table 7, the beams with strikethrough are the beams that are turned off and cannot be used as candidate beams. It can be seen from Table 7 that in each second beam group, there are only 3 candidate beams at most, that is, there are only 3 candidate beams with the same offset at most, which is less than L=4.

Table 7

Correspondingly, 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.

When the "n1-n2-codebook subset limit" parameter takes other values, the processing method is similar, and will not be repeated.

In the above example, 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. In the embodiment of the present application, 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.

In a possible implementation manner, if each second beam and the number of candidate beams L1 is less than L, the feedback information determined by the terminal device further includes the second feedback information. Wherein, the second feedback information includes feedback information of L-L1 beams.

In an implementation manner, 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.

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 are more matched with the occupied resources. At the same time, since the PMI information fed back by the terminal equipment does not contain beams that can cause strong interference, the use of PMI reconstructed based on this feedback to transmit downlink data will not cause strong interference between cells.

In an implementation manner, 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. At this time, 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. At this time, 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.

For example, take the first line of Table 1, take the parameter "n1-n2-codebook subset limit" as "two-one" and L=2 as an example. At this time, O ₁ O ₂ = 4, and 4 first 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. At this time, only the first beam group 3, that is, beams in {V _6,0 ,V _7,0 } can be used as candidate beams. Assuming that the terminal device chooses to report _{the first feedback information of the beam V 6,0} in the second beam group 2, 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.

In the feedback information reported by the terminal at this time, 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.

S303. The terminal device 200 sends feedback information, and the corresponding network device 100 receives the feedback information.

Specifically, 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. In this way, 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:

S401. Generate codebook configuration information. 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 , Where the codebook subset configuration information satisfies the following conditions: Among the O ₁ O ₂ second beam groups, 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 L are all positive integers and L is greater than 1.

Take the "n1-n2-codebook subset limit" parameter as "two-one" as an example, at this time, O ₁ O ₂ =4, 4 first beam groups and 4 second beam groups Table 2 and Table 3 Shown. The value of the bit occupied by B2 indicates that the four first beam groups are not candidate beams and need to meet the following conditions:

Among the second beam groups 0 to 3 in Table 3, the number of candidate beams in at least one second beam group is 2. For example, for beams V _0,0 , V _1,0 , V _2,0 , V _3,0 , the corresponding bits in B2 cannot be "00" at the same time.

When the "n1-n2-codebook subset limit" parameter takes other values, the processing method is similar, and will not be repeated.

This step S401 may be executed by the processor 201 and/or the processor 205 in the network device 100.

S402. The network device 100 sends codebook configuration information. Correspondingly, 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.

S403. The terminal device 200 sends feedback information. Correspondingly, 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.

In the embodiment of the present application, 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.

It should be noted that all relevant content of the steps involved in the foregoing method embodiments can be cited in the functional description of the corresponding functional module, and will not be repeated here.

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. As in FIG. 6, 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. As shown in FIG. 6, 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.

It can be understood that the processing module 601 may be a processor, the communication module 602 may be a transceiver, and the storage module 603 may be a memory.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs. It is completed by different functional modules, that is, the internal structure of the communication device or equipment is divided into different functional modules to complete all or part of the functions described above.

A person of ordinary skill in the art can understand that the various digital numbers such as first and second involved in the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application, but also indicate a sequence. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one" means one or more. At least two refers to two or more. "At least one", "any one" or similar expressions refer to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, 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. In addition, for elements in the singular form "a", "an" and "the", unless the context clearly dictates otherwise, it does not mean "one or only one", but means "one or more In one". For example, "a device" means to one or more such devices.

In the several embodiments provided in this application, it should be understood that the disclosed information sending method, receiving method, and device can be implemented in other ways. For example, the communication device embodiments described above are merely illustrative. For example, 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. In addition, 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.

In addition, 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.

If 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. Based on this understanding, 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.

Optionally, 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.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application shall be covered by the protection scope of this application. . Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (26)

1. An information sending method, characterized in that it comprises:

   Obtain codebook configuration information, where 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 N ₁ in the first dimension, and antenna ports in the second dimension The number N ₂ , the supersampling parameters O ₁ and O ₂ , and whether each beam in the 4 first beam groups is a candidate beam, wherein the 4 first beam groups belong to the O ₁ O ₂ first beam groups, and Each of the four first beam groups includes N ₁ N ₂ beams, and the O ₁ O ₂ first beam groups combine O ₁ O ₂ N according to the O ₁ and O _{2 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;

   If _{the number of candidate beams in each of the O 1} O ₂ second beam groups is less than the L, the feedback information is determined, and the feedback information includes: the first feedback information of the L1 candidate beams, the L1 belonging to the candidate beam a second beam set O ₁ O ₂ of the second beam set, O ₁ O ₂ of the second beam set based on the offset O ₁ O ₂ N ₁ N ₂ Divided into two beams;

   Send the feedback information.
2. An information receiving method, characterized in that it comprises:

   Send codebook configuration information, 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 N ₁ in the first dimension, and antenna ports in the second dimension The number N ₂ , the supersampling parameters O ₁ and O ₂ , and whether each beam in the 4 first beam groups is a candidate beam, wherein the 4 first beam groups belong to the O ₁ O ₂ first beam groups, and Each of the four first beam groups includes N ₁ N ₂ beams, and the O ₁ O ₂ first beam groups combine O ₁ O ₂ N according to the O ₁ and O _{2 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 feedback information is received, wherein, if _{the number of candidate beams in each second beam group in O 1} O ₂ second beam groups is less than the L, the feedback information includes: first feedback of L1 candidate beams information, the candidate beams L1 belonging to a second beam set of the O ₁ O ₂ of the second beam set, O ₁ O ₂ of the second beam set based on the offset O ₁ O ₂ Divided into N ₁ N _{2 beams.}
3. The method according to claim 1 or 2, wherein the feedback information further includes second feedback information, and the second feedback information includes feedback information of L-L1 beams.
4. The method according to claim 3, wherein the L-L1 beams and the L1 beams belong to the same second beam group.
5. The method according to claim 3 or 4, wherein the L-L1 beams are those of the O ₁ O ₂ second beam group indicated by the codebook subset configuration information as not being candidate beams L-L1 beams.
6. The method according to any one of claims 1 to 5, wherein the first feedback information includes linear combination coefficient information corresponding to the L1 candidate beams.
7. The method according to any one of claims 3-5, wherein the second feedback information includes linear combination coefficients corresponding to the L-L1 beams.
8. The method according to claim 3, wherein the second feedback information is all zeros.
9. An information sending method, characterized in that it comprises:

   Generate codebook configuration information, 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 first-dimensional antenna ports N ₁ , and the second-dimensional antenna ports The number N ₂ , the supersampling parameters O ₁ and O ₂ , and whether each beam in the 4 first beam groups is a candidate beam, wherein the 4 first beam groups belong to the O ₁ O ₂ first beam groups, and Each of the four first beam groups includes N ₁ N ₂ beams, and the O ₁ O ₂ first beam groups combine O ₁ O ₂ N according to the O ₁ and O _{2 1} N ₂ beams are divided into, wherein the codebook subset configuration information satisfies the following conditions: Among the O ₁ O ₂ second beam groups, the number of candidate beams in at least one second beam group is greater than or equal to L, The O ₁ O ₂ second beam group is _{divided into the O 1} O ₂ N ₁ N ₂ beams according to the offset, and N ₁ , N ₂ , O ₁ , O ₂ , and L are all positive integers and L is greater than 1;

   Send the codebook configuration information.
10. The method according to any one of claims 1-9, wherein:

    All beams in the O ₁ O ₂ first beam groups except for the 4 first beam groups are candidate beams.
11. The method according to any one of claims 1-10, wherein the O ₁ O ₂ first beam group is divided into O ₁ O ₂ N ₁ N _{2 beams according to the O 1} and O ₂ The result is:

    Each beam in any first beam group in the O ₁ O ₂ first beam groups has the same supersampling parameter, and any two first beam groups in _{the O 1} O _{2 first beam groups} The beam has different supersampling parameters.
12. The method according to any one of claims 1-11, wherein the O ₁ O ₂ second beam group is _{divided into O 1} O ₂ N ₁ N ₂ beams according to an offset, which is specifically :

    Each beam in any second beam group in the O ₁ O ₂ second beam groups has the same offset, and beams in any two second beam groups in _{the O 1} O _{2 second beam groups} Have different biases.
13. A terminal device, characterized in that it comprises:

    A processing unit, configured to obtain codebook configuration information, where 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 first-dimensional antenna ports 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, wherein the 4 first beam groups belong to the O ₁ O ₂ th A beam group, and each of the four first beam groups includes N ₁ N ₂ beams, and the O ₁ O ₂ first beam groups are combined according to the O ₁ and O ₂ O 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 processing unit is further configured to _{determine feedback information if the number of candidate beams in each second beam group in the O 1} O ₂ second beam groups is less than the L, and the feedback information includes: L1 candidate beams a first feedback information, the candidate beams L1 belonging to a second beam set of the O ₁ O ₂ of the second beam set, O ₁ O ₂ of the second beam set based on the offset O ₁ O ₂ N ₁ N ₂ beams are divided into;

    The communication unit is used to send the feedback information.
14. A network device, characterized in that it comprises:

    The communication unit is configured to send codebook configuration information, where 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 first-dimensional antenna ports 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, wherein the 4 first beam groups belong to the O ₁ O ₂ th A beam group, and each of the four first beam groups includes N ₁ N ₂ beams, and the O ₁ O ₂ first beam groups are combined according to the O ₁ and O ₂ O 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 feedback information is received, wherein, if _{the number of candidate beams in each second beam group in O 1} O ₂ second beam groups is less than the L, the feedback information includes: first feedback of L1 candidate beams information, the candidate beams L1 belonging to a second beam set of the O ₁ O ₂ of the second beam set, O ₁ O ₂ of the second beam set based on the offset O ₁ O ₂ Divided into N ₁ N _{2 beams.}
15. The terminal device or network device according to claim 13 or 14, wherein the feedback information further includes second feedback information, and the second feedback information includes feedback information of L-L1 beams.
16. The terminal device or network device according to claim 15, wherein the L-L1 beams and the L1 beams belong to the same second beam group.
17. The terminal device or network device according to claim 15 or 16, wherein the L-L1 beams are indicated by the codebook subset configuration information in _{the O 1} O _{2 second beam group} L-L1 beams that are not candidate beams.
18. The terminal device or network device according to any one of claims 13-17, wherein the first feedback information includes linear combination coefficient information corresponding to the L1 candidate beams.
19. The terminal device or network device according to any one of claims 15-17, wherein the second feedback information includes linear combination coefficients corresponding to the L-L1 beams.
20. The terminal device or network device according to claim 15, wherein the second feedback information is all zeros.
21. A network device, characterized in that:

    A processing unit, configured to generate codebook configuration information, where 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 first-dimensional antenna ports 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, wherein the 4 first beam groups belong to the O ₁ O ₂ th A beam group, and each of the four first beam groups includes N ₁ N ₂ beams, and the O ₁ O ₂ first beam groups are combined according to the O ₁ and O ₂ O ₁ O ₂ N ₁ N ₂ beams are divided into, where the codebook subset configuration information satisfies the following conditions: the number of candidate beams in at least one of the _{O 1} O _{2 second beam groups} Greater than or equal to L, the O ₁ O ₂ second beam group is divided into _{the O 1} O ₂ N ₁ N _{2 beams according to the offset, N 1} , N ₂ , O ₁ , O ₂ , L All are positive integers and L is greater than 1;

    The communication unit is configured to send the codebook configuration information.
22. The terminal device or network device according to any one of claims 13-21, wherein:

    All beams in the O ₁ O ₂ first beam groups except for the 4 first beam groups are candidate beams.
23. The terminal device or network device according to any one of claims 13-22, wherein the O ₁ O ₂ first beam group is to combine O ₁ O ₂ N ₁ N _{according to the O 1} and O _{2 The 2} beams are divided into:

    Each beam in any first beam group in the O ₁ O ₂ first beam groups has the same supersampling parameter, and any two first beam groups in _{the O 1} O _{2 first beam groups} The beam has different supersampling parameters.
24. The terminal device or network device according to any one of claims 13-23, wherein the O ₁ O ₂ second beam group is divided into _{O 1} O ₂ N ₁ N _{2 beams according to offsets} , Specifically:

    Each beam in any second beam group in the O ₁ O ₂ second beam groups has the same offset, and beams in any two second beam groups in _{the O 1} O _{2 second beam groups} Have different biases.
25. A communication device, comprising a processor, the processor is coupled with a memory, the memory is used for storing instructions, and the processor is used for running the instructions, so that the communication device realizes any one of claims 1-12 The method described in the item.
26. A computer-readable medium for storing instructions, when the instructions are executed by a computer, the computer realizes the method according to any one of claims 1-12.

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