CN109391305B

CN109391305B - Communication processing method and device

Info

Publication number: CN109391305B
Application number: CN201710687962.2A
Authority: CN
Inventors: 黄逸; 梁津垚; 任海豹; 李元杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2020-11-17
Anticipated expiration: 2037-08-11
Also published as: CN109391305A

Abstract

The application discloses a communication processing method and a device, wherein the method comprises the following steps: the terminal equipment receives a reference signal, wherein the reference signal is used for determining a precoding matrix; the terminal equipment feeds back a first parameter of the precoding matrix by using a first feedback period, feeds back a second parameter of the precoding matrix by using a second feedback period, and feeds back a third parameter by using at least one feedback period; the first parameter indicates a precoding vector corresponding to a logical antenna in the same polarization direction on each antenna panel, the second parameter indicates an index of a phase factor of a logical antenna in a different polarization direction on each antenna panel, and the third parameter indicates an index of a phase factor between antenna panels. Therefore, the method provided by the application can feed back the newly added parameters and can improve the feedback precision.

Description

Communication processing method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a communication processing method and apparatus.

Background

In the 5G mobile communication system, an antenna panel including at least one logical antenna array is deployed on a wireless access device, and each logical antenna array includes at least one set of cross-polarized logical antennas. In order to improve the accuracy of precoding (precoding) of transmission data by a wireless access device, a multi-panel codebook (multi-panel codebook) is introduced, and precoding matrices in the multi-panel codebook include two modes, namely a codebook mode1 and a codebook mode 2.

When the number of antenna panels is 2, the precoding matrix form in codebook mode1 is as follows:

where b1 represents the precoding vector corresponding to the logic antenna with the same polarization direction on each antenna panel, c_0,1,0Index of phase factors representing logical antennas of different polarization directions on each antenna panel, c_1,0,0Representing the wideband inter-panel phase factor.

When the number of antenna panels is 2, the precoding matrix form in codebook mode 2 is as follows:

wherein, b1 and c_0,1,0The meaning of (c) is the same as in codebook mode 1. In codebook mode 2, the phase factor between antenna panels is included as a_1,0,0、a_1,1,0And b_1,0,0、b_1,1,0。a_1,0,0And a_1,1,0Representing the phase factor broadband component between the antenna panels, b_1,0,0And b_1,1,0Representing the subband differential component of the phase factor between the antenna panels.

From the above, in the multi-panel codebook supported by the 5G mobile communication system, several parameters, such as c, are added_1,0,0，a_1,0,0，a_1,1,0，b_1,0,0And b_1,1,0However, in the prior art, only Precoding Matrix Indicator (PMI) and c corresponding to b1 are involved_0,1,0And the feedback of the corresponding PMI does not support the feedback of the newly added parameters.

Disclosure of Invention

The application provides a communication processing method and device, which are used for feeding back newly-added parameters and improving feedback precision.

In a first aspect, the present application provides a communication processing method, including: the terminal equipment receives a reference signal, the reference signal is used for determining a precoding matrix, the terminal equipment feeds back a first parameter of the precoding matrix by using a first feedback period, feeds back a second parameter of the precoding matrix by using a second feedback period, and feeds back a third parameter by using at least one feedback period. The first parameter indicates a precoding vector corresponding to a logic antenna in the same polarization direction on each antenna panel, the second parameter indicates indexes of phase factors of logic antennas in different polarization directions on each antenna panel, and the third parameter indicates indexes of phase factors between the antenna panels.

Therefore, by designing different feedback periods, the method provided by the application can improve the feedback precision under the condition of minimizing the feedback quantity, thereby improving the data transmission rate, feeding back the third parameter and improving the feedback precision.

In one possible design, the index of the phase factor between the antenna panels is the index of the phase factor between the broadband panels, and at least one feedback cycle is a third feedback cycle; wherein the relationship among the first feedback period, the second feedback period and the third feedback period is any one of the following: the first feedback period is the same as the third feedback period, the first feedback period is N1 times of the second feedback period, and N1 is a positive integer; or the second feedback period is the same as the third feedback period, the first feedback period is N2 times of the second feedback period, and N2 is an integer greater than 1; or the first feedback period is different from the second feedback period and the third feedback period, the first feedback period is N3 times of the third feedback period, the third feedback period is N4 times of the second feedback period or the second feedback period, and N3 and N4 are integers greater than 1.

Therefore, the method and the device provide various design schemes of the feedback cycle, and the network device can adjust the feedback mode of the terminal in time.

In one possible design, further comprising: the terminal device receives first configuration information sent by the network device, wherein the first configuration information is used for indicating the relationship among the first feedback period, the second feedback period and the third feedback period.

In one possible design, the index of the phase factor between the antenna panels comprises an index of a wideband component of the phase factor between the antenna panels and an index of a subband differential component of the phase factor between the antenna panels; wherein, the at least one feedback cycle comprises a fourth feedback cycle for feeding back the index of the phase factor broadband component between the antenna panels and a fifth feedback cycle for feeding back the index of the phase factor subband differential component between the antenna panels; wherein the relationship among the first feedback period, the second feedback period, the fourth feedback period and the fifth feedback period is any one of the following: the first feedback period is the same as the fourth feedback period, the second feedback period is the same as the fifth feedback period, the first feedback period is N5 times of the second feedback period, and N5 is a positive integer; or the first feedback period is different from the second feedback period, the fourth feedback period and the fifth feedback period are the same, the first feedback period is N6 times of the second feedback period, and N6 is an integer greater than 1; or the fourth feedback period is the same as the fifth feedback period, the first feedback period is different from the second feedback period and the fourth feedback period, the first feedback period is N7 times of the fourth feedback period, the fourth feedback period is N8 times of the second feedback period, and both N7 and N8 are integers greater than 1.

In one possible design, further comprising: and the terminal equipment receives second configuration information sent by the network equipment, wherein the second configuration information is used for indicating the relationship among the first feedback period, the second feedback period, the fourth feedback period and the fifth feedback period.

In one possible design, the index of the phase factor between the antenna panels indicated by the third parameter is an index of a phase factor wideband component between the antenna panels, and the at least one feedback cycle is a fourth feedback cycle for feeding back the index of the phase factor wideband component between the antenna panels; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period; the terminal device feeds back a first parameter of the precoding matrix in a first feedback period, feeds back a second parameter of the precoding matrix in a second feedback period, and feeds back a third parameter in at least one feedback period, and the method includes: and the terminal equipment feeds back the first parameter, the second parameter and the third parameter on the transmission time unit of the transmission unit at the same time by using the same feedback cycle.

Therefore, the method can save signaling overhead, and the feedback content does not transmit the maximum bit number corresponding to the time unit.

In one possible design, the maximum bandwidth to which the terminal device is configured consists of at least M2 subbands, and the index of the subband differential component of the inter-antenna panel phase factor indicated in the third parameter includes indexes of subband differential components of the inter-antenna panel phase factors corresponding to M1 subbands, where the index of the subband differential component of the inter-antenna panel phase factor corresponding to M1 subbands is a fraction of the index of the subband differential component of the inter-antenna panel phase factor corresponding to M2 subbands, M2 > M1, and M2 and M1 are positive integers.

In one possible design, the method further includes: the terminal device feeds back an indication parameter of the precoding matrix by using a sixth feedback period, wherein the indication parameter indicates a codebook mode corresponding to the precoding matrix, the sixth feedback period is N9 times of the first feedback period, the first feedback period is N10 times of the second feedback period, and both N9 and N10 are integers greater than 1.

Therefore, the indication parameters are added in the method, the indication parameters indicate the codebook mode corresponding to the precoding matrix, and the feedback precision is improved.

In one possible design, when the value of the indication parameter is 0, the index corresponding to the phase factor between the antenna panels in the codebook mode corresponding to the precoding matrix is the index of the phase factor between the broadband panels, and at least one feedback cycle is a cycle with the same first feedback cycle; when the value of the indication parameter is 1, the index of the phase factor between the antenna panels in the codebook mode corresponding to the precoding matrix comprises an index of a phase factor broadband component between the antenna panels and an index of a phase factor sub-band differential component between the antenna panels, and at least one feedback cycle comprises a feedback cycle of the index of the phase factor broadband component between the antenna panels and a feedback cycle of the index of the phase factor sub-band differential component between the antenna panels, wherein the feedback cycle of the index of the phase factor broadband component between the antenna panels is the same as the first feedback cycle, and the feedback cycle of the index of the phase factor sub-band differential component between the antenna panels is the same as the second feedback cycle.

Therefore, the codebook mode corresponding to the precoding matrix is indicated through the newly added indication parameters, and the feedback precision is effectively improved.

In a second aspect, the present application provides a communication processing method, including: the network equipment sends a reference signal, and the reference signal is used for determining a precoding matrix; the network equipment receives a first parameter of a precoding matrix fed back by the terminal equipment by using a first feedback period, a second parameter of the precoding matrix fed back by using a second feedback period, and a third parameter fed back by using at least one feedback period; the first parameter indicates a precoding vector corresponding to a logic antenna in the same polarization direction on each antenna panel, the second parameter indicates indexes of phase factors of logic antennas in different polarization directions on each antenna panel, and the third parameter indicates indexes of phase factors between the antenna panels.

In one possible design, further comprising: the network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is used for indicating the relation among the first feedback period, the second feedback period and the third feedback period.

In one possible design, further comprising: and the network equipment receives second configuration information sent by the terminal equipment, wherein the second configuration information is used for indicating the relationship among the first feedback period, the second feedback period, the fourth feedback period and the fifth feedback period.

In one possible design, the index of the phase factor between the antenna panels indicated by the third parameter is an index of a phase factor wideband component between the antenna panels, and the at least one feedback cycle is a fourth feedback cycle for feeding back the index of the phase factor wideband component between the antenna panels; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period; the network device receiving a first parameter of a precoding matrix fed back by a terminal device in a first feedback period, feeding back a second parameter of the precoding matrix in a second feedback period, and feeding back a third parameter in at least one feedback period includes: the network equipment receives the first parameter, the second parameter and the third parameter which are fed back by the terminal equipment on the transmission time unit of the transmission unit at the same time by using the same feedback cycle.

In one possible design, the method further includes: the network equipment receives an indication parameter of a precoding matrix fed back by the terminal equipment by using a sixth feedback period, wherein the indication parameter indicates a codebook mode corresponding to the precoding matrix, the sixth feedback period is N9 times of the first feedback period, the first feedback period is N10 times of the second feedback period, and both N9 and N10 are integers greater than 1.

In a third aspect, the present application provides a communication processing apparatus, which includes a receiving unit configured to perform the receiving step performed by the terminal device in the above first aspect, and a transmitting unit configured to perform a transmitting action such as feedback performed by the terminal device in the first aspect.

In a fourth aspect, the present application provides a communication processing apparatus, which includes a transmitting unit and a receiving unit, wherein the receiving unit is configured to perform the receiving step performed by the network device in the above first aspect, and the transmitting unit is configured to perform a transmitting action such as feedback performed by the network device in the first aspect.

In a fifth aspect, the present application further provides a terminal device, where the network device has a function of implementing the behavior of the terminal device in the first aspect. The terminal device comprises a processor, a transceiver and a memory, wherein the transceiver is used for communicating with a terminal, the memory is used for storing programs, and the method of the first aspect is executed when the processor executes the programs stored in the memory.

In a sixth aspect, the present application further provides a network device, where the network device has a function of implementing the behavior of the network device in the second aspect. The network device comprises a processor, a transceiver and a memory, wherein the transceiver is used for communicating with a terminal, the memory is used for storing programs, and the processor executes the programs stored in the memory to execute the method of the second aspect.

In a seventh aspect, the present application further provides a communication system, where the communication system includes a network device and a terminal device.

In an eighth aspect, the present application further provides a first computer storage medium storing computer-executable instructions for performing the method of the first aspect.

In a ninth aspect, the present application also provides a second computer storage medium storing computer-executable instructions for performing the method of the second aspect.

In a tenth aspect, the present application also provides a first computer program product comprising a computer program stored on the first computer storage medium described above, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method of the first aspect.

In an eleventh aspect, the present application also provides a second computer program product comprising a computer program stored on the second computer storage medium described above, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method of the second aspect.

In a twelfth aspect, the present application further provides a chip, wherein the chip includes a processor and a memory, and the processor is configured to read codes stored in the memory to implement the method and various possible designs in the first aspect.

In a thirteenth aspect, the present application further provides a chip, wherein the chip includes a processor and a memory, and the processor is configured to read codes stored in the memory to implement the method of the second aspect and various possible designs.

The embodiment of the application provides a method for performing subsampling on PMI of a multi-antenna panel codebook and a CSI feedback method.

The codebook is characterized by a one-to-one correspondence between a set of codebook indices and a set of precoding matrices. The codebook index may contain a plurality of values (e.g., i11, i12, i13, i21, i22, etc.), and there is a one-to-one correspondence between the codebook index and the PMI without using a joint coding technique or a subsampling technique for the codebook. Thus, c may be used when joint coding techniques or subsampling techniques are used for the multi-antenna panel codebook_1,0,0Or c_1,0,0，c_2,0,0，c_3,0,0The corresponding codebook index is either a_1,0,0，a_1,1,0，b_1,0,0，b_1,1,0After the corresponding codebook index is decimated (or decimated together with other PMIs), the codebook index is corresponding to the PMI. The codebook indexes that are not decimated do not correspond to the PMI, thereby reducing the number of codebook indexes corresponding to the PMI, and thus the number of feedback bits of the PMI can be reduced. Wherein c is_1,0,0，c_2,0,0，c_3,0,0May be a predefined value selected from { +1, -1, + j, -j }, a_1,0,0And a_1,1,0May be a predefined value which may be selected from

Selecting; b_1,0,0And b_1,1,0May be a predefined value which may be selected from

Selecting.

In one possible design, the firstTwo PMI (e.g., i21) pairs c_0,1,0And b is_1,0,0，b_1,1,0Joint coding is performed, thus, the second PMI (e.g., i)₂₁) In is containing c_0,1,0，b_1,0,0，b_1,1,0Corresponding PMI, then "second PMI + b_1,0,0，b_1,1,0The corresponding PMI "may be replaced by a" second PMI ".

In one possible design, when a first PMI (e.g., i)₁₁,i₁₂Etc.) and c_1,0,0Corresponding PMI (or c)_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI or a_1,0,0,a_1,1,0Corresponding PMI), when feeding back on the same tti, may be applied to c_1,0,0(or c)_1,0,0，c_2,0,0，c_3,0,0Or a_1,0,0,a_1,1,0) The corresponding codebook index is uniformly sampled and then corresponds to the PMI.

In one possible design, pair b₁Codebook index and c_1,0,0(or c)_1,0,0，c_2,0,0，c_3,0,0Or a_1,0,0,a_1,1,0) The corresponding codebook index is uniformly sampled at the same time and then is corresponding to the PMI.

In one possible design, b₁And representing the precoding vectors corresponding to the logic antennas in the same polarization direction on each antenna panel. b₁Codebook index and c_1,0,0(or c)_1,0,0，c_2,0,0，c_3,0,0Or a_1,0,0,a_1,1,0) The corresponding codebook index is uniformly sampled at the same time and then put together with RI for joint coding.

In one possible design, for the sum of values of the first PMI and b₁The value of the measured received power value of (1) is sub-sampled, specifically, the codebook index corresponding to the first PMI is extracted, and the extraction may be uniform sampling performed by a predefined interval value, or uniform sampling performed according to an interval value configured by signaling. In addition, the terminal will also feed back b₁The received power measurement of. May be on the value b of the first PMI₁Jointly encoding the received power measurements.If the b is₁The measured value of the received power and the CQI are reported in the same transmission time unit, the measured value of the wave beam can be abandoned, and only the CQI is fed back.

In one possible design when the second PMI (e.g., i)₂₁Etc. + -. c_1,0,0，c_2,0,0，c_3,0,0When the corresponding PMI value is fed back in the same tti, c may be measured_0,1,0，c_1,0,0，c_2,0,0，c_3,0,0And after sampling the corresponding codebook index, feeding back the value corresponding to the PMI.

In one possible design when the second PMI (e.g., i21, etc.) and b_1,0,0，b_1,1,0Corresponding PMI (or a)_1,0,0,a_1,1,0，b_1,0,0，b_1,1,0Corresponding PMI) may be applied to c when feedback is performed in the same tti_0,1,0After sampling the corresponding codebook index, feeding back the codebook index corresponding to the PMI, or discarding b_1,0,0，b_1,1,0And feeding back the corresponding PMI.

In one possible design, b is a number of sub-bands (the number of sub-bands is determined by the bandwidth allocated to the terminal by the network device)_1,0,0，b_1,1,0When the corresponding PMIs are fed back in the same transmission time unit, only b on a middle molecular band of the PMIs can be selected_1,0,0，b_1,1,0And the corresponding codebook index corresponds to the PMI for feedback.

Therefore, the network device uses the higher layer signaling to perform the configuration of sub-sampling or joint coding on the terminal device to adapt to the maximum number of bits capable of carrying the CSI content in the transmission time unit.

The application provides a method for determining the corresponding relation between PUCCH resources and UCI, so as to improve the utilization rate of reported resources as much as possible.

In one possible design, the network device may configure a PUCCH resource used by the UCI in a UCI reporting configuration, for example, the PUCCH resource may be indicated by a resource index configuration, or directly configure time domain information and/or frequency domain information of the PUCCH.

The embodiment is mainly suitable for the situation that the terminal equipment determines that one UCI and one PUCCH resource in the UCI reporting configuration information correspond to each other according to the UCI reporting configuration information.

In one possible design, the terminal device determines, according to the configuration information of the UCI and the configuration information of the PUCCH resources, a correspondence between the UCI and the PUCCH resources by using the following method:

one of the cases is: the multiple pieces of UCI reporting configuration information may be decoupled from the configuration information of the multiple PUCCH resources, that is, the UCI reporting configuration information does not include the configuration information of the PUCCH resources, or the configuration information of the PUCCH resources does not include the reporting configuration of the UCI. Taking the higher layer signaling as an example, the configuration information decoupling may be that the signaling configuring the UCI reporting configuration information and the signaling configuring the configuration information of the plurality of PUCCH resources are independent signaling. In another case, one UCI reporting configuration corresponds to multiple PUCCH resources, for example, one UCI reporting configuration and multiple PUCCH resource configurations are respectively configured in a signaling; for another example, a plurality of PUCCH resources or one PUCCH resource group is configured in one UCI reporting configuration.

In order to determine the PUCCH resource corresponding to each UCI report, the following method may be adopted:

the method 1 determines indexes of a plurality of UCIs according to the index of a CSI reporting set, or the resource index of a channel measurement resource, or the index of a measurement set, or the index of a channel connection, and then uses a plurality of PUCCH resources according to the index sequence of the plurality of UCIs.

Method 2, according to QCL or control channel configuration, determining one-to-one correspondence of UCI and PUCCH resources

Method 3, determining PUCCH resources according to control resource set (CORESET)/Control Channel Element (CCE)/candidates for control channel search (candidates).

The index of the PUCCH resource may be determined by a CORESET configuration index corresponding to the PUCCH resource, or determined by an index of a CCE, or determined by a candidate index.

As for the above 3 methods, method 3 and method 2 may be used together, the index of UCI is determined by method 2, the index of PUCCH resource is determined by method 3, and the correspondence between UCI and PUCCH resource is determined according to the predefined correspondence between the index of UCI and the index of PUCCH resource. For example, QCL determines the index of UCI, CORESET determines the index of PUCCH resource, and the indexes of UCI and PUCCH resource correspond in sequence or according to a predefined correspondence. The method 3 and the method 1 can be used together, the index of the PUCCH resource is determined by the method 3, the index of the UCI is determined by the method 1, and the index of the UCI and the index of the PUCCH resource correspond in sequence or according to a predefined corresponding relation. The method 1 and the method 3 may be used in combination with PUCCH resources configured with PUCCH indexes through signaling, respectively, for example, the method 1 determines the index of UCI, the signaling configures the index of PUCCH resources, and the index of UCI corresponds to the index sequence of PUCCH resources or corresponds according to a predefined correspondence.

In addition, it should be understood that if the number of PUCCH resources and the number of UCI are the same, a one-to-one correspondence relationship may be determined according to the indexes of the two. When the PUCCH resources correspond to UCI, the PUCCH resources may not be strictly identical to UCI in the same index, and only need to correspond to each other in the order of the respective indexes, that is, the first PUCCH resource in the PUCCH resource index corresponds to the first UCI in the UCI index.

If the number of PUCCH resources is different from the number of UCI, the smaller number is taken as the standard. Therefore, in the present application, the correspondence between a plurality of UCIs and a plurality of PUCCH resources is predefined or signaled. And configuring PUCCH resources or configuring indexes of the PUCCH resources in UCI reporting configuration. The signaling configures an index of a PUCCH resource or resource group. The configuration of the PUCCH resource groups saves signaling overhead. The one-to-one correspondence of the plurality of UCIs and the plurality of PUCCH resources improves the utilization rate of the PUCCH resources.

Drawings

FIG. 1 is a schematic diagram of a communication flow in an embodiment of the present application;

fig. 2 is a schematic diagram of an antenna panel in an embodiment of the present application;

fig. 3 is a flowchart illustrating an overview of a communication processing method according to an embodiment of the present application;

fig. 4 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode1 according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode 2 in an embodiment of the present application;

fig. 6 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode 3 in an embodiment of the present application;

fig. 7 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode 4 in an embodiment of the present application;

fig. 8 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in mode 5 in the embodiment of the present application;

fig. 9 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in mode 6 in the embodiment of the present application;

fig. 10 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode 7 in an embodiment of the present application;

fig. 11 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode 8 in an embodiment of the present application;

fig. 12 is a schematic diagram illustrating that a terminal device feeds back CSI to a network device in mode 9 according to an embodiment of the present application;

fig. 13 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in mode 10 in the embodiment of the present application;

fig. 14 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in mode 11 in the embodiment of the present application;

fig. 15 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in mode 12 in the embodiment of the present application;

fig. 16 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in mode 13 in the embodiment of the present application;

fig. 17 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in the mode 14 in the embodiment of the present application;

fig. 18 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in the mode 15 in the embodiment of the present application;

fig. 19 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in the mode 16 according to the embodiment of the present application;

fig. 20 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in the mode 17 in the embodiment of the present application;

fig. 21 is a schematic diagram illustrating that the terminal device feeds back CSI to the network device in the mode 18 in the embodiment of the present application;

fig. 22 is a schematic structural diagram of a terminal device in an embodiment of the present application;

fig. 23 is a schematic structural diagram of a network device in an embodiment of the present application;

fig. 24 is a schematic physical structure diagram of a terminal device in the embodiment of the present application;

fig. 25 is a schematic physical structure diagram of a network device in the embodiment of the present application.

Detailed Description

Embodiments of the present application are described below with reference to the accompanying drawings.

Fig. 1 shows a communication flow corresponding to the present application. First, the network device transmits a reference signal, for example, a channel state information reference signal (CSI-RS), to the terminal device. The terminal device performs channel estimation, calculates a PMI according to a channel estimation result, calculates a Channel Quality Indicator (CQI) according to the PMI, selects a Rank Indicator (RI) according to the PMI and the CQI, and feeds back channel state information such as the rank indicator RI, prem, CQI and the like to the network device on an uplink control channel (PUCCH). The network equipment determines a precoding matrix based on the received RI and PMI, and determines a Modulation and Coding Scheme (MCS) according to the CQI. The network device uses a precoding matrix to precode data transmitted on a downlink shared channel (PDSCH), and transmits the precoded data according to the MCS.

Through the feedback of the above Channel State Information (CSI), including RI, PMI, CQI, etc., the 5G mobile communication system can adapt transmission to the current channel conditions and thus achieve significant performance gain. Wherein, the CSI may be in the form of time domain channel information, frequency domain channel information, or a combination of both. The time domain channel information may be in the form of short term channel information or long term channel information, while the frequency domain channel information may be in the form of sub-band channel information or wideband channel information.

The wideband channel information refers to channel state information obtained by performing channel estimation using the entire bandwidth allocated to the terminal device by the network device as a channel matrix. The subband channel information refers to that the whole bandwidth allocated to the terminal device by the network device is divided into a plurality of subbands, and each subband is used as a channel matrix to perform channel estimation, so as to obtain channel state information on each subband. The short-term channel information is channel state information obtained by performing channel estimation for each of a plurality of time segments (several milliseconds to several tens milliseconds) divided by a time segment. The long-term channel information is channel state information obtained by performing channel estimation for the whole period of time (several tens milliseconds to several hundreds milliseconds). Accordingly, the wideband channel state information may include wideband RI, wideband PMI, wideband CQI, and wideband inter-panel phase factor, and the subband channel state information may include subband RI, subband PMI, subband CQI, and subband inter-panel phase factor. The long-term channel state information includes a long-term RI, a long-term PMI, and a long-term CQI. The short-term channel state information comprises short-term RI, short-term PMI and short-term CQI. One value is typical for each of the long-term or wideband channel state information, while multiple values are typical for each of the sub-band or short-term channel state information.

For RI, PMI, CQI, etc., periodic feedback on PUCCH and aperiodic feedback on PUSCH are common and are generally defined and configured by higher layer signaling in 3GPP protocols. Further, the entire system bandwidth is divided into a plurality of sub-bands. The RI is generally determined by assuming transmission over a system bandwidth, i.e., calculated based on the system bandwidth, while the CQI and PMI calculated by assuming transmission over the system bandwidth are referred to as a wideband CQI and a wideband PMI, and the CQI and PMI calculated by assuming transmission over a subband are referred to as a subband CQI and a subband PMI.

The transmission content in the PUCCH may have various formats. Since the PUCCH may have limited resources, the number of bits that can be accommodated in the PUCCH format is also limited. The number of bits that each format can accommodate, also called CSI payload size (CSI payload size), is generally predefined, and thus RI/PMI/CQI and the like included in CSI can be split among multiple time transmission units (e.g., subframes, slots, mini-slots and the like). It should be noted that the RI/PMI/CQI is classified according to different feedback periods and different frequency domain feedback granularities (e.g., subcarrier spacing), and is reported in multiple subframes. For example, RI may be fed back with a relatively long period like long-term channel information, and wideband PMI and/or wideband CQI and subband PMI and/or subband CQI may be fed back with a relatively short period. The terminal device may calculate CSI content reported in subsequent subframes based on CSI content reported in previous subframes.

Specifically, for example, in a Long Term Evolution (LTE) communication system, the terminal device periodically feeds back CSI on the PUCCH, which includes the following modes:

the RI, the wideband first PMI has a longer variation period, and the wideband CQI and the wideband second PMI have a shorter variation period, so that the periods of the required subframes are different, where the subframe of subframe type 1 and the subframe of subframe type 2 belong to subframes having a longer period; subframes of the subframe type 3 subframes belong to subframes having a shorter period. X, Y are each integers greater than 1.

1) PUCCH mode (mode) 1-1: RI, PMI and CQI are fed back in three types of subframes, respectively:

reporting information in the subframe of subframe type 1: RI (Ri)

Reporting information in the subframe of subframe type 2: wideband first PMI

Reporting information in the subframe of subframe type 3: wideband CQI and wideband second PMI

The subframe period of the subframe type 1 is X times of the subframe period of the subframe type 2, and the subframe period of the subframe type 2 is Y times of the subframe period of the subframe type 3.

2) PUCCH mode1-1 submode (submode) 1:

reporting information in the subframe of subframe type 1: RI and wideband first PMI

Reporting information in the subframe of subframe type 2: wideband CQI and wideband second PMI

Wherein the subframe period of the subframe type 1 is X times the subframe period of the subframe type 2.

3)PUCCH mode1-1submode2：

Reporting information in the subframe of subframe type 1: RI (Ri)

Reporting information in the subframe of subframe type 2: wideband first PMI, wideband second PMI and wideband CQI

Wherein a subframe period of the subframe type 1 is X times a subframe period of the subframe type 2

4)PUCCH mode2-1：

Reporting information in the subframe of subframe type 1: RI and precoding type indicator information (PTI)

Reporting information in the subframe of subframe type 2: if the PTI is 0, reporting a first PMI of the broadband; if PTI is 1, reporting a broadband second PMI and a broadband CQI;

reporting information in the subframe of subframe type 3: if PTI is 0, reporting a broadband second PMI and a broadband CQI; if the PTI is 1, reporting a second PMI of the broadband, a sub-band CQI and a sub-band identifier (subband label);

the subframe period of the subframe type 1 is X times of the subframe period of the subframe type 2, the subframe period of the subframe type 2 is Y times of the subframe period of the subframe type 3, and the PTI represents the subframe period.

The wideband first PMI and the wideband second PMI mainly correspond to a first-stage codebook index and a second-stage codebook index in an LTE two-stage codebook, and details are not repeated here.

Therefore, feedback of the phase factor between the antenna panels is not involved in a Long Term Evolution (LTE) communication system, and a new feedback mode needs to be designed to realize the feedback of the phase factor between the antenna panels, so as to meet the requirements of a 5G mobile communication system.

It should be noted that, since the transmission time unit in LTE is fixed to one subframe, and the transmission time unit in 5G is variable, the transmission time unit is configured by the network device, for example, one of at least one time domain symbol, slot (slot), mini slot (mini slot), subframe or frame. For ease of understanding, some implementations will be described below using subframes as examples, but "subframes" may be replaced with "transmission time units". The network element related to the embodiment of the application comprises network equipment and terminal equipment. The network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, and may be a base station (NodeB), an evolved node b (eNodeB), a base station in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, and the like.

A Terminal equipment (Terminal equipment) may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and the like.

In the present application, the antenna panel refers to a group of cross-polarized logic antenna arrays, or two or more groups of single-polarized logic antenna arrays. Correspondingly, the scenes of the multiple antenna panels correspond to a logic antenna array formed by two or more groups of cross polarization antennas, or a logic antenna array formed by more than two groups of single polarization antennas.

As shown in fig. 2, each box represents an antenna panel, there are two polarization directions of the single-polarization logic antenna array, which are polarization direction 1 and polarization direction 2, respectively, and the two polarization directions of each antenna panel are the same.

The following describes a multi-antenna panel codebook according to the present application.

wherein, b₁Representing the precoding vectors corresponding to the logical antennas of the same polarization direction on each antenna panel, c_0,1,0Phase factors of logical antennas representing different polarization directions on each antenna panel, c_1,0,0Representing the wideband inter-panel phase factor. c. C_0,1,0And c_1,0,0May be a predefined value, and the value may be selected from { +1, -1, + j, -j }.

When the number of antenna panels is 4, the precoding matrix form in codebook mode1 is as follows:

wherein, b₁Representing the precoding vectors corresponding to the logical antennas of the same polarization direction on each antenna panel, c_0,1,0Phase factors of logical antennas representing different polarization directions on each antenna panel, c_1,0,0，c_2,0,0And c_3,0,0Representing the wideband inter-panel phase factor. It can be seen that when the number of antenna panels increases, the number of indexes corresponding to the phase factors between the antenna panels also increases. In particular, c_1,0,0Is a phase factor between the antenna panel 1 and the antenna panel 2, c_2,0,0Is the phase factor between the antenna panel 2 and the antenna panel 3, c_3,0,0Is the phase factor between the antenna panel 3 and the antenna panel 4. c. C_0,1,0And c_1,0,0，c_2,0,0，c_3,0,0May be a predefined value, and the value may be selected from { +1, -1, + j, -j }.

wherein, b₁Representing the precoding vectors corresponding to the logical antennas of the same polarization direction on each antenna panel, c_0,1,0Representing the phase factors of the logical antennas with different polarization directions on each antenna panel, in codebook mode 2, the phase factors between the antenna panels include, a_1,0,0And a_1,1,0，b_1,0,0And b_1,1,0Wherein a is_1,0,0And a_1,1,0Representing the phase factor broadband component between the antenna panels, which may also be referred to as the first component, b_1,0,0And b_1,1,0The subband differential component, which represents the phase factor between the antenna panels, may also be referred to as the second component. a is_1,0,0And a_1,1,0May be a predefined value which may be selected from

Selecting. c. C_0,1,0May be a predefined value, and the value may be selected from { +1, -1, + j, -j }.

In addition, b₁May be in the form of

v_l,mDenotes a length of K_1×K₂The vector of (A), the K₁The number of CSI-RS ports for one polarization direction for the horizontal dimension in each antenna panel;

wherein, K is₂The number of CSI-RS ports for the vertical dimension in each antenna panel, O₁And said O₂Representing the oversampling factor. The oversampling factor is the number of CSI-RS ports of one polarization direction of the vertical latitude of each antenna panel

In the present application, the phase factor between antenna panels may refer to a wideband "inter-panel phase factor" or may refer to a subband "inter-panel phase factor". If only one phase factor is calculated on the system bandwidth of the terminal equipment allocated by the network equipment, the phase factor can be called as a broadband inter-panel phase factor; if the bandwidth allocated to the terminal device by the network device is divided into a plurality of sub-bands, each sub-band corresponds to a phase factor, which may be referred to as an inter-sub-band panel phase factor.

In the application, each precoding matrix in the codebook corresponds to one or more codebook indexes, the codebook indexes correspond to the PMI, and the PMI can be fed back to the network equipment by the terminal equipment.

The CSI feedback period is designed differently according to the codebook used, and the following describes an embodiment of the present application with reference to the drawings.

As shown in fig. 3, the present application provides a communication processing method, including:

step 300: the terminal equipment receives a reference signal, and the reference signal is used for determining a precoding matrix.

As can be seen from fig. 1, the reference signal received by the terminal device may be a CSI-RS.

Step 310: the terminal equipment feeds back a first parameter of the precoding matrix by using a first feedback period, feeds back a second parameter of the precoding matrix by using a second feedback period, and feeds back a third parameter by using at least one feedback period.

The first parameter indicates a precoding vector corresponding to a logical antenna in the same polarization direction on each antenna panel, and indicates b in the codebook mode1 and the codebook mode 2₁The second parameter indicates the index of the phase factor of the logic antenna with different polarization directions on each antenna panel, the third parameter indicates the index of the phase factor between the antenna panels, and indicates c in the above codebook mode1 and codebook mode 2_0,1,0。

As shown in fig. 1, the precoding matrix is obtained by the terminal device through channel estimation based on the reference signal. The present application relates generally to the design of how to feed back the above parameters.

In different codebook modes, the value types of indexes corresponding to phase factors among antenna panels are different, and in codebook mode1, the antenna panels are different in value typeThe index corresponding to the phase factor between line panels is the index corresponding to the phase factor between wideband panels, i.e. c in codebook mode1_1,0,0Corresponding index or, c_1,0,0，c_2,0,0And c_3,0,0The corresponding index. Wherein, the index corresponding to the phase factor between the wideband panels can also adopt the corresponding PMI for feedback, i.e. c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0And c_3,0,0A corresponding PMI. At this time, the PMI corresponding to the wideband inter-panel phase factor is a third parameter. Optionally, the PMI corresponding to the wideband inter-panel phase factor may be a part of the value of the first parameter.

In codebook mode 2, the index b corresponding to the inter-antenna-panel phase factor includes a first component index and a second component index of the inter-antenna-panel phase factor. Optionally, the first component index may reflect a wideband characteristic, and may be named as an index corresponding to a wideband component of a phase factor between antenna panels, corresponding to a in codebook mode 2_1,0,0、a_1,1,0The corresponding index, and the second component index, may reflect the characteristic of the subband difference (or called subband phase rotation), and may be named as the index corresponding to the subband difference component of the phase factor between the antenna panels, corresponding to b in codebook mode 2_1,0,0、b_1,1,0The corresponding index. Wherein, the index corresponding to the wideband component of the phase factor between the antenna panels and the index corresponding to the subband differential component of the phase factor between the antenna panels can also be fed back by adopting the corresponding PMI, which is a_1,0,0、a_1,1,0Corresponding PMI and b_1,0,0、b_1,1,0A corresponding PMI. At this time, the third parameter includes a PMI corresponding to the wideband component of the phase factor between the antenna panels and a PMI corresponding to the subband differential component of the phase factor between the antenna panels. Optionally, the PMI corresponding to the wideband component of the phase factor between the antenna panels may be a part of the value of the first parameter. The PMI corresponding to the subband differential component of the phase factor between the antenna panels may be a part of the value of the second parameter.

The following embodiments include multiple transmission modes, each mode including different types of transmission time units, and reporting channel state information in the transmission time units of each type. It should be noted that the transmission time unit may be different and may be the same for each type. Optionally, the transmission time unit of each type is configured to be the same or different by the network device.

Example 1:

in codebook mode1, the index corresponding to the phase factor between antenna panels is the index corresponding to the phase factor between wideband panels, i.e. c_1,0,0Or, c_1,0,0，c_2,0,0And c_3,0,0The corresponding index. The at least one feedback period is a third feedback period.

Wherein, the relation of the first feedback period, the second feedback period and the third feedback period is any one of the following possible designs.

It should be noted that the following is an example of a transmission time unit, and the transmission time unit may be a mini slot or the like.

Fig. 4-9 are examples of terminal devices feeding back CSI to network devices, subframes being depicted as pulses. In modes 1 to 6, the first parameter is represented by the first PMI indicating (i) in the codebook index₁₁,i₁₂),(i₁₁,i₁₂) Corresponds to b₁(ii) a The second parameter is represented by a second PMI indicating i in the codebook index₂₁，i₂₁Corresponds to c_0,1,0. The first PMI and the second PMI may be wideband PMIs, or a part of PMIs therein may be subband PMIs, which is not limited in this embodiment of the present application.

A first possible design:

the first feedback period is the same as the third feedback period, and the first feedback period is N1 times of the second feedback period, where N1 is a positive integer.

Therefore, the first parameter and the index corresponding to the wideband inter-panel phase factor are fed back on the same time transmission unit transmission time unit, and when N1 is equal to 1, the first parameter, the index corresponding to the wideband inter-panel phase factor, and the second parameter are fed back on the same time transmission unit transmission time unit, for example, in mode 3; when N1 > 1, the first feedback period is greater than the second feedback period, and the indexes corresponding to the first parameter and the wideband inter-panel phase factor are not fed back on the same time transmission unit transmission time unit, such as mode1 and mode 2. X and Y are both integers greater than 1.

Mode1 (as shown in fig. 4):

reporting information in a transmission time unit of transmission time unit type 1: RI (Ri)

Reporting information in a transmission time unit of transmission time unit type 2: first PMI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

Reporting information in a transmission time unit of transmission time unit type 3: second PMI + wideband CQI

Wherein the transmission time unit period of transmission time unit type 1 is X times the transmission time unit period of transmission time unit type 2, and the transmission time unit period of transmission time unit type 2 is Y times the transmission time unit period of transmission time unit type 3. For example, the transmission time units of transmission time unit types 1 to 3 may be subframes/slots/time domain symbols, and the channel state information in each type is reported in a period of at least 1 time of the subframe/slot/time domain symbols. For another example, the transmission time unit in the transmission time unit type 1 is a subframe, and the reporting information in the transmission time unit of the transmission time unit type 1 takes at least one time of the subframe as a period; the transmission time unit in the transmission unit type 2 is a time slot, and the reported information in the transmission time unit of the transmission time unit type 2 takes at least one time of the time slot as a period; if the transmission time unit of transmission time unit type 3 is 3 time slots, the report information in the transmission time unit of transmission time unit type 3 takes at least one time of the time domain length of 3 time slots as a period.

Mode 2 (shown in fig. 5):

reporting information in a transmission time unit of transmission time unit type 1: RI + first PMI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

Reporting information in a transmission time unit of transmission time unit type 2: second PMI + wideband CQI

Wherein the transmission time unit period of transmission time unit type 1 is X times the transmission time unit period of transmission time unit type 2,

it should be noted that, in the above mode1 and mode 2, the second PMI may be based on the RI, the first PMI and c reported last time_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0The corresponding PMI is calculated as a precondition hypothesis. Similarly, the wideband CQI may be based on the RI, the first PMI and c reported last time_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0The corresponding PMI is calculated as a precondition hypothesis. The specific calculation method can refer to the methods provided in the prior art, which are not limited in the present application,

mode 3 (shown in fig. 6):

Reporting information in a transmission time unit of transmission time unit type 2: first PMI + second PMI + wideband CQI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

Wherein the transmission time unit period of transmission time unit type 1 is X times the transmission time unit period of transmission time unit type 2.

A second possible design:

the second feedback period is the same as the third feedback period, and the first feedback period is N2 times the second feedback period, where N2 is an integer greater than 1.

Therefore, the index corresponding to the phase factor between the second parameter and the antenna panel is fed back on the same time transmission unit transmission time unit, e.g. mode 4 and mode 5.

Mode 4 (as shown in fig. 7):

reporting information in a transmission time unit of transmission time unit type 1: RI + first PMI

Reporting information in a transmission time unit of transmission time unit type 2: second PMI + wideband CQI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding toPMI

Mode 5 (shown in fig. 8):

Reporting information in a transmission time unit of transmission time unit type 2: first PMI

Reporting information in a transmission time unit of transmission time unit type 3: second PMI + wideband CQI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

Wherein the transmission time unit period of transmission time unit type 1 is X times the transmission time unit period of transmission time unit type 2, and the transmission time unit period of transmission time unit type 2 is Y times the transmission time unit period of transmission time unit type 3.

In the above-described modes 4 and 5, the second PMI, wideband CQI, c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0The corresponding PMI may be calculated according to the RI reported last time and the first PMI as a premise assumption.

A third possible design:

the first feedback period is different from the second feedback period and the third feedback period, the first feedback period is N3 times of the third feedback period, the third feedback period is N4 times of the second feedback period or the second feedback period, and N3 and N4 are integers greater than 1.

Thus, the index corresponding to the phase factor between the antenna panels is not fed back on the same time transmission unit transmission time unit as the first parameter and not as the second parameter, but is fed back separately, e.g. mode 6.

Mode 6 (shown in fig. 9):

reporting information in a transmission time unit of transmission time unit type 1: first PMI + RI

Reporting in transmission time units of transmission time unit type 2Information: c. C_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

In the above mode 6, c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0The corresponding PMI may be calculated according to the RI reported last time and the first PMI as a premise assumption. The second PMI and the wideband CQI can be obtained according to the RI, the first PMI and the c which are reported last time_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0The corresponding PMI is calculated as a precondition hypothesis.

The terminal device receives first configuration information sent by the network device, where the first configuration information is used to indicate a relationship among the first feedback period, the second feedback period, and the third feedback period, that is, mode switching may be performed between the above modes 1 to 6. For example, the terminal device receives configuration information sent by the network device, where the configuration information indicates that the terminal device feeds back parameters of the precoding matrix in mode 1. With the movement of the terminal device, the terminal device moves to a signal coverage area of another different network device and accesses the network device, the network device has an antenna panel structure different from that of the network device previously accessed by the terminal device, for example, a calibration error exists between panels, a more accurate inter-panel phase factor can be fed back by adopting the mode 6, and at this time, the throughput is higher by adopting the mode 6, so that the terminal device can receive configuration information sent by the network device, and the configuration information indicates that the terminal device feeds back parameters of a precoding vector by adopting the mode 6.

Example 2:

in codebook mode 2, the index corresponding to the phase factor between the antenna panels includes the index between the antenna panelsIndex corresponding to wideband component of phase factor corresponding to a in codebook mode 2_1,0,0、a_1,1,0Corresponding index, and corresponding index of the phase factor sub-band differential component between the antenna panels, corresponding to b in codebook mode 2_1,0,0、b_1,1,0The corresponding index. The at least one feedback period includes a fourth feedback period for feeding back an index of the phase factor wideband component between the antenna panels, and a fifth feedback period for feeding back an index of the phase factor subband differential component between the antenna panels. Time transmission unit the time transmission unit, wherein the relationship between the first feedback period, the second feedback period, the fourth feedback period and the fifth feedback period is any one of the following possible designs:

it should be noted that, taking time transmission unit transmission time unit as an example, fig. 10-fig. 15 are examples of the terminal device feeding back CSI to the network device, and subframes are depicted as pulses. In modes 7 through 12, the first parameter is represented by a first PMI indicating (i) in the codebook index₁₁,i₁₂),(i₁₁,i₁₂) Corresponds to b₁The second parameter is represented by a second PMI and indicates i in the codebook index₂₁，i₂₁Corresponds to c_0,1,0. The first PMI and the second PMI may be wideband PMIs, or a part of PMIs therein may be subband PMIs, which is not limited in this embodiment of the present application.

A first possible design:

the first feedback period is the same as the fourth feedback period, the second feedback period is the same as the fifth feedback period, the first feedback period is N5 times of the second feedback period, and N5 is a positive integer.

Therefore, when N5 > 1, the index corresponding to the phase factor wideband component between the first parameter and the antenna panel is fed back on the same time transmission unit transmission time unit, and the index corresponding to the phase factor wideband component between the second parameter and the antenna panel is fed back on the same time transmission unit transmission time unit, for example, mode 7 and mode 8. When N5 is equal to 1, the first parameter, the index corresponding to the antenna panel phase factor wideband component, the second parameter, and the index corresponding to the antenna panel phase factor wideband component are fed back on the same time transmission unit transmission time unit, for example, mode 9.

Mode 7 (shown in fig. 10):

Reporting information in a transmission time unit of transmission time unit type 2: first PMI + a_1,0,0,a_1,1,0Corresponding PMI

Reporting information in a transmission time unit of transmission time unit type 3: second PMI + b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

Mode 8 (as shown in fig. 11):

reporting information in a transmission time unit of transmission time unit type 1: RI + first PMI + a_1,0,0,a_1,1,0Corresponding PMI

Reporting information in a transmission time unit of transmission time unit type 2: second PMI + b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

In the above-described modes 7 and 8, the second PMI and/or b_1,0,0，b_1,1,0The corresponding PMI can be determined according to the RI, the first PMI and a reported last time_1,0,0,a_1,1,0The corresponding PMI is calculated as a precondition hypothesis.

Mode 9 (shown in fig. 12):

Reporting information in a transmission time unit of transmission time unit type 2: first PMI + second PMI + a_1,0,0,a_1,1,0Corresponding PMI + b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

A second possible design:

the first feedback period is different from the second feedback period, the fourth feedback period and the fifth feedback period are the same, the first feedback period is N6 times of the second feedback period, and N6 is an integer greater than 1;

therefore, the index corresponding to the wideband component of the phase factor between the antenna panels, the second parameter, and the index corresponding to the wideband component of the phase factor between the antenna panels are fed back on the same time transmission unit transmission time unit, for example, mode 10 and mode 11.

Mode 10 (shown in fig. 13):

Reporting information in a transmission time unit of transmission time unit type 2: second PMI + a_1,0,0,a_1,1,0Corresponding PMI + b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

Mode 11 (shown in fig. 14):

Reporting information in a transmission time unit of transmission time unit type 3: second PMI + a_1,0,0,a_1,1,0Corresponding PMI + b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

In the above modes 10 and 11, the second PMI, a_1,0,0,a_1,1,0Corresponding PMI, b_1,0,0，b_1,1,0The corresponding PMI may be calculated according to the RI reported last time and the first PMI as a premise assumption.

A third possible design:

the fourth feedback period is the same as the fifth feedback period, the first feedback period is different from the second feedback period and the fourth feedback period, the first feedback period is N7 times of the fourth feedback period, the fourth feedback period is N8 times of the second feedback period, and both N7 and N8 are integers greater than 1.

Therefore, the index corresponding to the wideband component of the phase factor between the antenna panels and the index corresponding to the wideband component of the phase factor between the antenna panels are fed back on the same time transmission unit transmission time unit, for example, in mode 12.

Mode 12 (shown in fig. 15):

Reporting information in a transmission time unit of transmission time unit type 2: a is_1,0,0,a_1,1,0Corresponding PMI + b_1,0,0，b_1,1,0Corresponding PMI

In the above mode 12, a_1,0,0,a_1,1,0Corresponding PMI, b_1,0,0，b_1,1,0The corresponding PMI may be calculated according to the RI reported last time and the first PMI as a premise assumption. The second PMI and the wideband CQI can be obtained according to the RI, the first PMI and a reported last time_1,0,0,a_1,1,0Corresponding PMI, b_1,0,0，b_1,1,0Calculating corresponding PMI as a precondition。

The terminal device receives second configuration information sent by the network device, where the first configuration information is used to indicate a relationship between a first feedback period, a second feedback period, a fourth feedback period, and a fifth feedback period, that is, mode switching may be performed between the above-mentioned modes 7 to 12, and mode switching may be performed between the above-mentioned modes 1 to 12.

In addition, as an optional embodiment, the terminal device feeds back the first parameter, the index corresponding to the wideband component of the phase factor between the antenna panels, and the second parameter on the first time transmission unit transmission time unit, and does not feed back the index corresponding to the subband differential component of the phase factor between the antenna panels, where the first time transmission unit transmission time unit is a time transmission unit transmission time unit that feeds back the first parameter, the index corresponding to the wideband component of the phase factor between the antenna panels, the second parameter, and the index corresponding to the subband differential component of the phase factor between the antenna panels, and the first feedback period, the second feedback period, the fourth feedback period, and the fifth feedback period are the same feedback period.

Therefore, when the first feedback period, the second feedback period, the fourth feedback period, and the fifth feedback period are the same feedback period, the terminal device may select not to feed back the index corresponding to the subband differential component of the phase factor between the antenna panels, so as to save signaling overhead.

As an optional embodiment, the index of the phase factor between the antenna panels indicated by the third parameter is an index of a phase factor wideband component between the antenna panels, and the at least one feedback cycle is a fourth feedback cycle for feeding back the index of the phase factor wideband component between the antenna panels; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period; therefore, the terminal device feeds back the first parameter, the second parameter and the third parameter on the same transmission time unit by using the same feedback cycle.

The method can save signaling overhead, and the feedback content does not transmit the maximum bit number corresponding to the time unit.

Further, in order to save signaling overhead, the maximum bandwidth configured by the terminal device is at least composed of M2 subbands, and the index of the subband differential component of the inter-antenna panel phase factor indicated in the third parameter includes indexes of subband differential components of the inter-antenna panel phase factors corresponding to M1 subbands, where the index of the subband differential component of the inter-antenna panel phase factor corresponding to M1 subbands is a part of the indexes of the subband differential components of the inter-antenna panel phase factors corresponding to M2 subbands, M2 > M1, and M2 and M1 are positive integers.

The numbering of the time transmission units, e.g., M2 subbands, is: 1,2,3,4,5,6, the terminal device may extract the subbands uniformly, and obtain M1 subbands with the following numbers: 2,4, 6; or the preceding partial bands are selected, resulting in M1 subbands numbered: 1,2, 3; or selecting the latter partial sub-bands, resulting in M1 sub-bands numbered: 4,5, 6;

for another example, the bandwidth is uniformly divided into 3 bandwidth parts (bandwidth parts), and each part selects one sub-band, resulting in M1 sub-bands.

Example 3:

the terminal device feeds back an indication parameter of the precoding matrix by using a sixth feedback period, wherein the indication parameter indicates a codebook mode corresponding to the precoding matrix, the sixth feedback period is N9 times of the first feedback period, the first feedback period is N10 times of the second feedback period, and both N9 and N10 are integers greater than 1.

It should be noted that, in the following, the time transmission unit is taken as an example, fig. 16 and 17 are examples of the terminal device feeding back CSI to the network device, and subframes are depicted as pulses. In modes 13 and 14, the first parameter, simply referred to as the first PMI, indicates (i) in the codebook index₁₁,i₁₂),(i₁₁,i₁₂) Corresponds to b₁The second parameter is abbreviated as the second PMI and corresponds to c_0,1,0Corresponding PMI indicating i in codebook index₂₁，i₂₁Corresponds to c_0,1,0。

When the value of the indication parameter is 0, the index corresponding to the phase factor between the antenna panels is the index of the phase factor between the broadband panels, and at least one feedback cycle is a cycle with the same first feedback cycle;

when the value of the indication parameter is 1, the index of the phase factor between the antenna panels comprises an index of a phase factor broadband component between the antenna panels and an index of a phase factor sub-band differential component between the antenna panels, at least one feedback cycle comprises a feedback cycle of the index of the phase factor broadband component between the antenna panels and a feedback cycle of the index of the phase factor sub-band differential component between the antenna panels,

the feedback period of the index of the phase factor broadband component between the antenna panels is the same as the first feedback period, and the feedback period of the index of the phase factor sub-band differential component between the antenna panels is the same as the second feedback period.

Time transfer unit time transfer units such as mode 13 and mode 14. Wherein a precoding and co-phasing type indicator (PCTI) represents the first indication parameter.

Mode 13 (shown in fig. 16):

reporting information in a transmission time unit of transmission time unit type 1: RI + PCTI

Reporting information in a transmission time unit of transmission time unit type 2:

PCTI is 0: first PMI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

PCTI is 1: wideband second PMI + a_1,0,0，a_1,1,0Corresponding PMI + wideband CQI

Reporting information in a transmission time unit of transmission time unit type 3:

PCTI is 0: wideband second PMI + wideband CQI

PCTI is 1: subband second PMI + subband b_1,0,0，b_1,1,0Corresponding PMI + sub-band CQI + sub-band identification

Mode 14 (shown in fig. 17):

PCTI 0 first PMI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

PCTI is 1: first PMI + wideband second PMI + a_1,0,0，a_1,1,0Corresponding PMI + wideband CQI

PCTI is 0: wideband second PMI + wideband CQI

In the above modes 13 and 14, the wideband second PMI and the wideband CQI may be based on the RI, the first PMI and c that are reported last time_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0The corresponding PMI is calculated as a precondition hypothesis. Sub-band b_1,0,0，b_1,1,0The corresponding PMI, subband second PMI and subband CQI can be determined according to the RI, the first PMI and a reported most recently_1,0,0，a_1,1,0The corresponding PMI is calculated as a precondition hypothesis.

The modes 1 to 14 can be switched.

Example 4:

the present application also provides the following modes for feeding back parameters of the precoding matrix.

It should be noted that, taking time transmission unit transmission time unit as an example in the following, fig. 18 and 21 are for the terminal device to feed back CSI to the network deviceFor example, the sub-frames are depicted as pulses. In modes 15 to 18, the first parameter is used for the first PMI representation, indicating (i) in the codebook index₁₁,i₁₂),(i₁₁,i₁₂) Corresponds to b₁The second parameter is represented by a second PMI and indicates i in the codebook index₂₁，i₂₁Corresponds to c_0,1,0。

Mode 15 (shown in fig. 18):

reporting information in a transmission time unit of transmission time unit type 1: RI + PTI

PTI ═ 0: first PMI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

PTI ═ 1: second PMI + wideband CQI

PTI ═ 0: second PMI + wideband CQI

PTI ═ 1: second PMI + subband CQI + subband identification

Mode 16 (shown in fig. 19):

PTI ═ 1: second PMI + wideband CQI + c_1,0,0Corresponding PMI or c_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI

PTI ═ 0: second PMI + wideband CQI

PTI ═ 1: second PMI + subband CQI + subband identification

Wherein the transmission time unit period of transmission time unit type 1 is X times the transmission time unit period of transmission time unit type 2, and the transmission time unit of transmission time unit type 2 occurs with a period Y times the transmission time unit period of transmission time unit type 3.

Mode 17 (shown in fig. 20):

PTI ═ 0: first PMI + a_1,0,0，a_1,1,0Corresponding PMI

PTI ═ 1: wideband second PMI + wideband b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

PTI ═ 0: wideband second PMI + wideband b_1,0,0，b_1,1,0Corresponding PMI + wideband CQI

PTI ═ 1: subband second PMI + subband b_1,0,0，b_1,1,0Corresponding PMI + sub-band CQI + sub-band identification

Wherein the period of the transmission time unit type 1 is X times the period of the transmission time unit type 2, and the period of the transmission time unit type 2 is Y times the period of the transmission time unit type 3. Wherein, the wide band b_1,0,0，b_1,1,0The corresponding PMI refers to the PMI calculated for the wideband, subband b_1,0,0，b_1,1,0The corresponding PMI refers to a PMI calculated for a subband.

Mode 18 (shown in fig. 21):

PTI ═ 0: first PMI + a_1,0,0，a_1,1,0Corresponding PMI

PTI ═ 1: wideband second PMI + wideband CQI

PTI ═ 0: wideband second PMI + wideband CQI

Similar to modes 1 to 12, the values reported later can be calculated based on the last reported other values I as a precondition.

Mode switching can be performed between the above-described modes 1 to 18.

There is a limit to the number of bits that can be used to carry CSI content in the same subframe. If the total bit number corresponding to the CSI content exceeds the maximum bit number capable of carrying the CSI content in one subframe, joint encoding (joint encoding) or sub-sampling (sub-sampling) on the PMI of the CSI content reported in the same subframe needs to be considered to adapt to the maximum bit number capable of carrying the CSI content in the subframe. The embodiment of the application provides a method for performing subsampling on PMI of a multi-antenna panel codebook and a CSI feedback method.

Selecting.

As an alternative embodiment, a second PMI (e.g., i21) pair c is used_0,1,0And b is_1,0,0，b_1,1,0Joint coding was performed as shown in table 1.

TABLE 1

Thus, the second PMI (e.g., i)₂₁) In is containing c_0,1,0，b_1,0,0，b_1,1,0Corresponding PMI, then "second PMI + b_1,0,0，b_1,1,0The corresponding PMI "may be replaced by a" second PMI ".

With joint coding, one PMI may indicate multiple parameters, e.g., one PMI in Table 1 may indicate c_0,1,0，b_1,0,0，b_1,1,0。

As an alternative embodiment, when the first PMI (e.g., i)₁₁,i₁₂Etc.) and c_1,0,0Corresponding PMI (or c)_1,0,0，c_2,0,0，c_3,0,0Corresponding PMI or a_1,0,0,a_1,1,0Corresponding PMI), when feeding back on the same time transmission unit transmission time unit, can be applied to c_1,0,0(or c)_1,0,0，c_2,0,0，c_3,0,0Or a_1,0,0,a_1,1,0) The corresponding codebook index is uniformly sampled and then mapped to the PMI as described in table 2.

TABLE 2

The values of the first PMI and the codebook index i are given in Table 2 below for various RI values₁₃The corresponding relationship of (1). For example, when the first PMI has a value of 1, the corresponding codebook index i₁₃Has a value of 2; when the value of the first PMI is 0, the corresponding codebook index i₁₃Is 0;

by subsampling, the part of codebook indices is first reduced to reduce the feedback bits of PMI, e.g. the number of codebook indices is 6, and by subsampling first, reduced to 3, the number of feedback bits is reduced from 3 bits to 2 bits.

As an alternative embodiment, pair b₁Codebook index and c_1,0,0(or c)_1,0,0，c_2,0,0，c_3,0,0Or a_1,0,0,a_1,1,0) The corresponding codebook indices are simultaneously uniformly sampled and then mapped to the PMIs, as shown in Table 3.

TABLE 3

Wherein N is₁Number of antenna ports, O, representing a first direction₁An oversampling factor representing a first direction; n is a radical of₂Number of antenna ports, O, in the second direction₂Representing an oversampling factor for the second direction. The values of the first PMI and the codebook index i are given in Table 3 below for various RI values₁₁，i₁₂，i₁₃The corresponding relationship of (1). Such as when the value of the first PMI I_PMI11When 1, the corresponding codebook index i₁₁Is 2, value I of the first PMI_PMI12When 1, codebook index i₁₂Is 2, value I of the first PMI_PMI13When 1, codebook index i₁₃Has a value of 2; where N1 is the number of antenna ports in the vertical dimension, N2 is the number of antenna ports in the horizontal dimension,

as another example, b₁And representing the precoding vectors corresponding to the logic antennas in the same polarization direction on each antenna panel. b₁Codebook index and c_1,0,0(or c)_1,0,0，c_2,0,0，c_3,0,0Or a_1,0,0,a_1,1,0) The corresponding codebook indices are uniformly sampled at the same time and then put together with RI for joint coding, as shown in table 4.

TABLE 4

An example of joint coding of RI and the first PMI is given in table 4: UE selects an I_RI/_PMI13Is fed back to the base station, I_RI/_PMI13Is determined from Table 4, e.g. when I_RI/_PMI13When 1, the value indicating RI is 1, and codebook index i₁₃Has a value of 1, the remainder I_RI/_PMI13Represented RI and codebook index i₁₃The value similarity of (d) can be indicated by table 4.

As an alternative embodiment, for the sum b of the values of the first PMI₁The measured value of the received Power (e.g. RSRP (Reference Signal Receiving Power) may be sub-sampled, and specifically, the codebook index corresponding to the first PMI is extracted, which may be uniformly sampled by a predefined interval value or according to a SignalThe configured interval values are uniformly sampled. In addition, the terminal will also feed back b₁The received power measurement of. May be on the value b of the first PMI₁The received power measurements of (a) are jointly encoded as shown in table 5.

TABLE 5

Table 5 gives an example of joint coding of RI and the first PMI: UE selects an I_PMI1/_RSRPIs fed back to the base station, I_RI/_PMI13Is determined by table 4, e.g. when I_PMI1/_RSRPWhen 1, the codebook index (i) is expressed₁₁,i₁₂) Has a value of (0,1), b₁The index of the beam measurement is I_PMI1/_RSRPAnd the rest is_PMI1/_RSRPCodebook index represented (i)₁₁,i₁₂) And b₁The value similarity of the indices of the beam measurements may be indicated by table 5.

If the b is₁The measured value of the received power and the CQI are reported in the transmission time unit of the transmission unit at the same time, the measured value of the wave beam can be abandoned, and only the CQI is fed back.

When the second PMI (e.g., i)₂₁Etc. + -. c_1,0,0，c_2,0,0，c_3,0,0When the corresponding PMI value is fed back in the same time transmission unit transmission time unit, c may be set_0,1,0，c_1,0,0，c_2,0,0，c_3,0,0And after sampling the corresponding codebook index, feeding back the value corresponding to the PMI.

When the second PMI (e.g., i21, etc.) and b_1,0,0，b_1,1,0Corresponding PMI (or a)_1,0,0,a_1,1,0，b_1,0,0，b_1,1,0Corresponding PMI) when feedback is performed in the same time transmission unit transmission time unit, the feedback may be performed onc_0,1,0After sampling the corresponding codebook index, feeding back the codebook index corresponding to the PMI, or discarding b_1,0,0，b_1,1,0And feeding back the corresponding PMI.

When b is on multiple sub-bands (the number of sub-bands is determined by the bandwidth allocated to the terminal by the network equipment)_1,0,0，b_1,1,0When the corresponding PMIs are fed back in the transmission time unit of the same time transmission unit, only b on the middle molecular band of the PMIs can be selected_1,0,0，b_1,1,0And the corresponding codebook index corresponds to the PMI for feedback.

Therefore, the network device uses higher layer signaling (e.g. RRC signaling) to perform subsampling or joint coding configuration on the terminal device to adapt to the maximum number of bits capable of carrying CSI content in the time transmission unit transmission time unit.

Uplink Control Information (UCI) is uplink control information, and is fed back to a network device by a terminal device through a PUCCH resource, and the UCI may include Rank Indication (RI), Channel Quality Indication (CQI), Precoding Matrix Indication (PMI), including at least one of PMIs corresponding to indexes corresponding to phase factors between a first PMI and a second PMI and between antenna panels, CSI-RS resource indicator (CRI), Precoding Type Indication (PTI), beam measurement results (such as RSRP measurement results), ACK/NACK, Scheduling Request (SR), and the like. One type of UCI is CSI, which may include at least one of RI, PMI, CQI, CRI, and PTI.

When reporting the UCI, the terminal device needs to be mapped on the PUCCH resource, so that the network device can receive the UCI reported by the terminal device on the corresponding PUCCH resource. Since the periodic feedback can be configured through signaling (aperiodic feedback or semi-static feedback is triggered through signaling) so that the terminal device reports a plurality of UCI, and the PUCCH configuration needs to be in one-to-one correspondence with UCI reporting, the embodiment of the present application specifies the correspondence between PUCCH resources and UCI, so as to improve the utilization rate of the reported resources as much as possible.

As an optional embodiment, the network device may configure, in the UCI reporting configuration, a PUCCH resource used by the UCI, for example, the PUCCH resource may be indicated by resource index configuration, or directly configure time domain information and/or frequency domain information of the PUCCH.

For example, PUCCH resource configuration information is added to a reporting configuration set (reporting setting). For the index configuration of the PUCCH resource, a number corresponding to time domain information (e.g., symbol position, slot position, subframe position) and frequency domain information (e.g., subcarrier number, RB number, sub/partial band/wideband) of the PUCCH may be configured in the higher layer signaling. For example, for the symbol index (symbol _ index) and the resource block index (RB _ index), the corresponding PUCCH resource index (PUCCH _ index) is configured. The high layer signaling can also further configure a group index of a PUCCH resource group, where the PUCCH resource group includes a time-frequency domain resource of multiple PUCCH resources and/or an index of multiple PUCCH resources. For example, an example of signaling that the PUCCH group index includes indexes of a plurality of PUCCHs is: PUCCH _ group _ index PUCCH _ index _ List size (1..4) of PUCCH _ index, indicating that the PUCCH resource group may include up to 4 PUCCH resources, wherein PUCCH _ index indicates a time domain resource and a frequency domain resource of the PUCCH resource.

For another example, the reporting configuration of the UCI configures CSI reporting and RSRP reporting. For the UCI report, PUCCH resources used for the report are configured, that is, both CSI and RSRP use the PUCCH resources. For another example, CSI reporting is configured in the reporting configuration of one UCI, and RSRP reporting is configured in the reporting configuration of another UCI, so that the UCI configuration information configuring CSI reporting may include a reporting period and/or subframe offset of CSI, and resource configuration of PUCCH resources or an index of PUCCH resources. The UCI configuration information configured for RSRP reporting may include a reporting period and/or a subframe offset of RSRP, and a resource index of a PUCCH resource or a resource configuration of the PUCCH resource.

As an optional embodiment, the terminal device determines, according to the configuration information of the multiple UCIs and the configuration information of the multiple PUCCH resources, the correspondence between the multiple UCIs and the multiple PUCCH resources by using the following method:

the method comprises the following steps: determining indexes of a plurality of UCIs according to the indexes of the CSI reporting set, or the resource indexes of the channel measurement resources, or the indexes of the measurement set, or the indexes of the channel connection, and using a plurality of PUCCH resources according to the index sequence of the plurality of UCIs.

The indexes of multiple UCI are determined according to any one of the indexes of the CSI reporting set, or the resource indexes of the channel measurement resources, or the indexes of the measurement set, or the indexes of the channel connection, for example, the indexes of the CSI reporting set include 1,2, and 3(reporting setting1, reporting setting 2, and reporting setting 3), and the corresponding multiple UCI include UCI1, UCI2, and UCI 3.

Specifically, the index of the CSI reporting set is index information of CSI reporting configuration (CSI reporting setting). The CSI reporting configuration information may include at least one of reported CSI parameters (s)), CSI types (CSI type), codebook configuration (codebook configuration) information, time-domain behaviors (time-domain indicators), CQI, and frequency domain granularity (frequency granularity) of the PMI. And the user equipment determines the CSI reporting configuration according to the index of the CSI reporting configuration, and measures and reports the CSI according to the CSI reporting configuration.

The resource index of the channel measurement resource is index information of the CSI measurement resource for measuring the channel. The CSI measurement resources for measuring the channel may be contained in a CSI measurement resource configuration (CSI resource setting) set. And determining the index of UCI according to the index of the CSI measurement resource for measuring the channel, wherein the index of the UCI is determined by the resource indexes of the plurality of channel measurement resources. Wherein the CSI measurement resource configuration (CSI resource setting) set comprises at least one of CSI measurement resources for channel measurement and CSI measurement resources for interference measurement.

The index of the channel connection is index information of the connection whose attribute is channel measurement. Specifically, the configuration of the connection (Link) includes an indication of a CSI measurement resource configuration set, an indication of a CSI reporting configuration set, and an indication of a measurement attribute (channel measurement or interference measurement). The connection represents the connection relationship between the CSI measurement resource configuration set and the CSI reporting configuration set.

The index of the measurement set is an index of the measurement set (measurement setting). The measurement set is a set of relationships between measurement resource configurations and reporting configuration sets, and may include one or more connections (links), and a terminal may configure only one measurement set.

For example, UCI1 (UCI with index 1) and UCI2 are reported using PUCCH resource 1 and PUCCH resource 2, respectively, that is, UCI corresponding to any one of the indexes is mapped on PUCCH resource with the same index, that is, UCI1 uses PUCCH resource 1, and UCI2 uses PUCCH resource 2.

The method 2 comprises the following steps: determining the one-to-one correspondence relationship between UCI and PUCCH resources according to the configuration of QCL or control channel

Specifically, the QCL configured for predefining or signaling corresponds to the PUCCH resource one to one, the QCL configured for predefining or signaling corresponds to the UCI one to one, and the signaling is high-layer signaling or physical layer signaling. For example, UCI1 corresponding to QCL1 uses QCL1 to report on PUCCH resource 1. And reporting the UCI2 corresponding to the QCL2 by using PUCCH resource 2 corresponding to the QCL 2. And the user equipment maps UCI on the corresponding PUCCH resource and reports the UCI.

QCL is quasi co-located information, and its definition can refer to the definition in LTE, that is, a signal transmitted from an antenna port of QCL will experience the same large scale fading, which includes one or more of the following: delay spread, doppler shift, average channel gain, average delay, etc. In the embodiment of the present application, reference may also be made to the definition of QCL in 5G, and in the new wireless NR system, the definition of QCL is similar to that of LTE system, but spatial information is added, such as: the signals transmitted from the antenna ports of the QCL experience the same large scale fading, wherein the large scale fading includes one or more of the following parameters: delay spread, doppler shift, Average channel gain, Average delay, and spatial domain parameters, etc., where the spatial domain parameters may be one of an emission angle (AOA), a main emission angle (Dominant AOA), an Average arrival angle (Average AOA), an arrival Angle (AOD), a channel correlation matrix, a power angle spread spectrum of an arrival angle, an Average trigger angle (Average AOD), a power angle spread spectrum of a departure angle, a transmission channel correlation, a reception channel correlation, a transmission beamforming, a reception beamforming, a spatial channel correlation, a filter, a spatial filtering parameter, or a spatial receiving parameter, etc. The QCL relationship includes one or more of a channel state information-reference signal (CSI-RS), a DMRS, a Phase Tracking Reference Signal (PTRS) (which may also be referred to as a Phase Compensation Reference Signal (PCRS), or a phase noise reference signal (phase noise reference signal for short)), a synchronization block (SS block) (which includes one or more of a synchronization signal including a master synchronization signal PSS and/or a slave synchronization signal SSs and a broadcast channel) satisfying the QCL relationship.

In the method, the measurement of UCI is based on QCL information, and the configuration information of QCL may determine the index of UCI, for example, the index of UCI is determined by the index of QCL. For example, UCI1 is measured from a CSI measurement resource (e.g., a channel measurement resource) configured with QCL #1, and UCI2 is measured from a CSI measurement resource (e.g., a channel measurement resource) configured with QCL # 2.

The method 3 comprises the following steps: determining PUCCH resources according to control resource set (CORESET)/Control Channel Element (CCE)/candidates (candidates) for control channel search, for example, UCI1 corresponding to CORESET 1 is reported on PUCCH resource 1 corresponding to CORESET 1. And reporting the UCI2 corresponding to the CORESET 2 on PUCCH resources 2 corresponding to the ORESET 2. And the user equipment maps UCI on the corresponding PUCCH resource and reports the UCI.

A control resource Configuration (CORESET) is configuration information of control information, such as the CORESET configuration. The control resource configuration may include at least one of a frequency domain resource, a starting OFDM symbol, a time domain duration, a REG combining size (REG bundling size), a transmission type (whether interleaved), and the like of the control information.

A Control Channel Element (CCE) is a resource unit of a control channel, consisting of C REGs, where C is 9 or 4 or other positive integer.

The control channel search candidate (candidate) is a search space candidate for control information.

In the method, the index of the PUCCH resource may be determined by a CORESET configuration index corresponding to the PUCCH resource, or determined by an index of a CCE, or determined by a candidate index.

In addition, it should be understood that, if the number of PUCCH resources is the same as the number of UCI, a one-to-one correspondence relationship may be determined according to the indexes of the PUCCH resources and the UCI, for example, 2 UCI are reported in the reporting configuration of UCI, whereas 2 UCI are configured in the PUCCH resources, UCI1 is mapped on the first PUCCH resource and UCI2 is mapped on the second PUCCH resource. At this time, if the indexes of the two PUCCH resources are PUCCH resource 1 and PUCCH resource 2, and the indexes of the two UCI are UCI1 and UCI2, respectively, UCI1 is mapped on PUCCH resource 1, and UCI2 is mapped on PUCCH resource 2; if the indexes of the two PUCCH resources are PUCCH resource 8 and PUCCH resource 9, and the indexes of the two UCI resources are UCI3 and UCI4, respectively, UCI3 is mapped on PUCCH resource 8, and UCI4 is mapped on PUCCH resource 9, so that when PUCCH resources correspond to UCI, the PUCCH resources may not be limited to the same strict indexes, and only need to correspond to each other one by one according to the order of the respective indexes, that is, the first PUCCH resource in the PUCCH resource indexes corresponds to the first UCI in the UCI indexes.

If the number of PUCCH resources is different from the number of UCI, the smaller number is taken as the standard. For example, 2 UCI are reported in the reporting configuration of UCI, but 3 PUCCH resources are configured, UCI1 is mapped on the first PUCCH resource, UCI2 is mapped on the second PUCCH resource, and the third PUCCH resource is not used.

For example, if 3 UCI are reported in the reporting configuration of UCI, but 2 PUCCH resources are configured, UCI1 is mapped on PUCCH11, UCI2 is mapped on PUCCH2, and UCI3 is not reported.

Therefore, in the present application, the correspondence between a plurality of UCIs and a plurality of PUCCH resources is predefined or signaled. And configuring PUCCH resources or configuring indexes of the PUCCH resources in UCI reporting configuration. The signaling configures an index of a PUCCH resource or resource group. The configuration of the PUCCH resource groups saves signaling overhead. The one-to-one correspondence of the plurality of UCIs and the plurality of PUCCH resources improves the utilization rate of the PUCCH resources.

Based on the foregoing embodiments, an embodiment of the present application provides a terminal device, configured to implement the method shown in fig. 3, and referring to fig. 22, the terminal device 2200 includes: a receiving unit 2201 and a transmitting unit 2202 to perform the receiving and transmitting actions of the terminal device in the foregoing respective method embodiments, respectively. The terminal device may further include a processing unit, configured to perform processing actions of determining, selecting, sampling, and the like of the terminal device in the foregoing method embodiments. Alternatively, in hardware implementation, the receiving unit may be a receiver, the transmitting unit may be a transmitter, and the processing unit may be a processor.

For details, refer to the method embodiment shown in fig. 3, which is not described herein again.

Based on the foregoing embodiments, an embodiment of the present application provides a network device, configured to implement the method shown in fig. 3, and referring to fig. 23, the network device 2300 includes: a receiving unit 2301 and a transmitting unit 2302. The terminal device may further include a processing unit, configured to execute processing actions such as determining a network device in the foregoing method embodiments. Alternatively, in hardware implementation, the receiving unit may be a receiver, the transmitting unit may be a transmitter, and the processing unit may be a processor.

It should be understood that the above division of each unit of the terminal device and the network device is only a division of a logical function, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these units can be implemented entirely in software, invoked by a processing element; or may be implemented entirely in hardware; part of the units can also be realized in the form of software called by a processing element, and part of the units can be realized in the form of hardware. For example, the processing unit may be a processing element separately set up, or may be implemented by being integrated in a certain chip, or may be stored in a memory in the form of a program, and a certain processing element calls and executes the function of the unit. The other units are implemented similarly. In addition, all or part of the units can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, the steps of the method or the units above may be implemented by hardware integrated logic circuits in a processor element or instructions in software. Further, the above receiving unit is a unit that controls reception, and information can be received by a receiving means of a terminal device or a network device, such as an antenna and a radio frequency device. The above transmitting unit is a unit for controlling transmission, and information can be transmitted by a transmitting device of a terminal device or a network device, such as an antenna and a radio frequency device.

For example, the above units may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. As another example, when one of the above units is implemented in the form of a Processing element scheduler, the Processing element may be a general purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling programs. As another example, these units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Based on the above embodiments, the present application further provides a terminal device, which is configured to implement the method shown in fig. 3, and referring to fig. 24, the terminal device 2400 includes: a transceiver 2401, a processor 2402, and a memory 2403, wherein the functions of the receiving unit 2201 and the transmitting unit 2202 are implemented by the transceiver 2401.

The memory 2403 is used for storing programs, instructions and the like. In particular, the program may include program code comprising computer operating instructions. The memory 2403 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 2402 calls the application program stored in the memory 2403 to execute the method shown in fig. 3.

Based on the foregoing embodiments, an embodiment of the present application further provides a network device, configured to implement the method shown in fig. 3, and referring to fig. 25, the network device 2500 includes: a transceiver 2501, a processor 2502 and a memory 2503, wherein the functions of the receiving unit 2301 and the transmitting unit 2302 in fig. 23 are implemented by the transceiver 2501.

The memory 2503 is used for storing programs, instructions and the like. In particular, the program may include program code comprising computer operating instructions. The memory 2503 may comprise RAM, and may also include non-volatile memory, such as at least one disk storage. The processor 2502 calls the application program stored in the memory 2503 to execute the method shown in fig. 3.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method for processing communications, the method comprising:

the terminal equipment receives a reference signal, wherein the reference signal is used for determining a precoding matrix;

the terminal equipment feeds back a first parameter of the precoding matrix by using a first feedback period, feeds back a second parameter of the precoding matrix by using a second feedback period, and feeds back a third parameter by using at least one feedback period;

the first parameter indicates a precoding vector corresponding to a logical antenna in the same polarization direction on each antenna panel, the second parameter indicates an index of a phase factor of a logical antenna in a different polarization direction on each antenna panel, and the third parameter indicates an index of a phase factor between antenna panels.

2. The method of claim 1, wherein the index of the antenna inter-panel phase factor is an index of a wideband inter-panel phase factor, and the at least one feedback period is a third feedback period; wherein,

the relationship among the first feedback period, the second feedback period, and the third feedback period is any one of:

the first feedback period is the same as the third feedback period, and the first feedback period is N1 times the second feedback period, N1 is a positive integer;

or the second feedback period is the same as the third feedback period, the first feedback period is N2 times the second feedback period, and N2 is an integer greater than 1;

or the first feedback period is different from the second feedback period and the third feedback period, and the first feedback period is N3 times the third feedback period, the third feedback period is N4 times the second feedback period or the second feedback period, and N3 and N4 are both integers greater than 1.

3. The method of claim 2, further comprising:

the terminal device receives first configuration information sent by a network device, wherein the first configuration information is used for indicating the relationship among the first feedback period, the second feedback period and the third feedback period.

4. The method of claim 1, wherein the index of the inter-antenna panel phase factor comprises an index of an inter-antenna panel phase factor wideband component and an index of an inter-antenna panel phase factor subband differential component;

wherein the at least one feedback cycle includes a fourth feedback cycle for feeding back an index of the phase factor wideband component between the antenna panels, and a fifth feedback cycle for feeding back an index of the phase factor subband differential component between the antenna panels;

wherein a relationship of the first feedback period, the second feedback period, the fourth feedback period, and the fifth feedback period is any one of:

the first feedback period is the same as the fourth feedback period, the second feedback period is the same as the fifth feedback period, the first feedback period is N5 times the second feedback period, and N5 is a positive integer;

or the first feedback period is different from the second feedback period, the fourth feedback period and the fifth feedback period are the same, the first feedback period is N6 times of the second feedback period, and N6 is an integer greater than 1;

or the fourth feedback period is the same as the fifth feedback period, the first feedback period is different from the second feedback period and the fourth feedback period, the first feedback period is N7 times the fourth feedback period, the fourth feedback period is N8 times the second feedback period, and N7 and N8 are both integers greater than 1.

5. The method of claim 4, further comprising:

and the terminal equipment receives second configuration information sent by network equipment, wherein the second configuration information is used for indicating the relationship among the first feedback period, the second feedback period, the fourth feedback period and the fifth feedback period.

6. The method of claim 1, wherein the index of the inter-antenna-panel phase factor indicated by the third parameter is an index of an inter-antenna-panel phase factor wideband component, and the at least one feedback cycle is a fourth feedback cycle in which the index of the inter-antenna-panel phase factor wideband component is fed back; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period;

wherein the terminal device feeds back a first parameter of the precoding matrix in a first feedback period, feeds back a second parameter of the precoding matrix in a second feedback period, and feeds back a third parameter in at least one feedback period, and the method comprises the following steps:

and the terminal equipment feeds back the first parameter, the second parameter and the third parameter on the transmission time unit of the transmission unit at the same time by using the same feedback cycle.

7. The method of claim 4 or 5,

the maximum bandwidth to which the terminal device is configured at least consists of M2 subbands, and the index of the subband differential component of the phase factor between antenna panels indicated in the third parameter includes indexes of subband differential components of the phase factor between antenna panels corresponding to M1 subbands, where the index of the subband differential component of the phase factor between antenna panels corresponding to M1 subbands is a part of the index of the subband differential component of the phase factor between antenna panels corresponding to M2 subbands, M2 > M1, and M2 and M1 are positive integers.

8. The method of any one of claims 1-6, further comprising:

the terminal device feeds back an indication parameter of the precoding matrix by using a sixth feedback period, wherein the indication parameter indicates a codebook mode corresponding to the precoding matrix, the sixth feedback period is N9 times of the first feedback period, the first feedback period is N10 times of the second feedback period, and N9 and N10 are integers greater than 1.

9. The method of claim 8,

when the value of the indication parameter is 0, the index corresponding to the phase factor between the antenna panels is the index of the phase factor between the broadband panels, and the at least one feedback cycle is a cycle with the same first feedback cycle;

when the value of the indication parameter is 1, the index of the phase factor between the antenna panels comprises an index of a phase factor broadband component between the antenna panels and an index of a phase factor subband differential component between the antenna panels, the at least one feedback cycle comprises a feedback cycle of the index of the phase factor broadband component between the antenna panels and a feedback cycle of the index of the phase factor subband differential component between the antenna panels,

10. A method for processing communications, the method comprising:

the network equipment sends a reference signal, wherein the reference signal is used for determining a precoding matrix;

the network equipment receives a first parameter fed back by the terminal equipment by using a first feedback period, a second parameter fed back by using a second feedback period and a third parameter fed back by using at least one feedback period;

11. The method of claim 10, wherein the index of the antenna inter-panel phase factor is an index of a wideband inter-panel phase factor, and the at least one feedback period is a third feedback period; wherein,

12. The method of claim 11, further comprising:

and the network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is used for indicating the relationship among the first feedback period, the second feedback period and the third feedback period.

13. The method of claim 10, wherein the index of the inter-antenna panel phase factor comprises an index of an inter-antenna panel phase factor wideband component and an index of an inter-antenna panel phase factor subband differential component;

14. The method of claim 13, further comprising:

and the network equipment receives second configuration information sent by the terminal equipment, wherein the second configuration information is used for indicating the relationship among the first feedback period, the second feedback period, the fourth feedback period and the fifth feedback period.

15. The method of claim 10, wherein the index of the antenna panel inter-antenna phase factor indicated by the third parameter is an index of an antenna panel inter-antenna phase factor wideband component, and the at least one feedback cycle is a fourth feedback cycle in which the index of the antenna panel inter-antenna phase factor wideband component is fed back; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period;

the network device receiving a first parameter of the precoding matrix fed back by the terminal device in a first feedback period, feeding back a second parameter of the precoding matrix in a second feedback period, and feeding back a third parameter in at least one feedback period includes:

and the network equipment receives the first parameter, the second parameter and the third parameter which are fed back by the terminal equipment on the same time transmission unit transmission time unit by using the same feedback cycle.

16. The method of claim 13 or 14, wherein a maximum bandwidth with which the terminal device is configured consists of at least M2 subbands, wherein the indices of the sub-band differential components of the antenna panel phase factors indicated in the third parameter include indices of sub-band differential components of antenna panel phase factors corresponding to M1 subbands, respectively, wherein the indices of sub-band differential components of antenna panel phase factors corresponding to M1 subbands, respectively, are part of the indices of sub-band differential components of antenna panel phase factors corresponding to M2 subbands, respectively, M2 > M1, and M2 and M1 are positive integers.

17. The method of any one of claims 10-15, further comprising:

the network device receives an indication parameter of the precoding matrix fed back by the terminal device using a sixth feedback period, where the indication parameter indicates a codebook mode corresponding to the precoding matrix, the sixth feedback period is N9 times of the first feedback period, the first feedback period is N10 times of the second feedback period, and N9 and N10 are integers greater than 1.

18. The method of claim 17,

19. A communication processing apparatus, characterized in that the apparatus comprises:

a receiving unit, configured to receive a reference signal, where the reference signal is used to determine a precoding matrix;

a sending unit, configured to use a first feedback period to feed back a first parameter of the precoding matrix, use a second feedback period to feed back a second parameter of the precoding matrix, and use at least one feedback period to feed back a third parameter;

20. The apparatus of claim 19, wherein the index of the antenna inter-panel phase factor is an index of a wideband inter-panel phase factor, and the at least one feedback period is a third feedback period; wherein,

21. The apparatus of claim 20, wherein the receiving unit is further configured to receive first configuration information sent by a network device, and the first configuration information is used to indicate a relationship among the first feedback period, the second feedback period, and the third feedback period.

22. The apparatus of claim 19, wherein the index of the antenna inter-panel phase factor comprises an index of an antenna inter-panel phase factor wideband component and an index of an antenna inter-panel phase factor subband differential component;

23. The apparatus of claim 22, wherein the receiving unit is further configured to receive second configuration information sent by a network device, and the second configuration information is used to indicate a relationship between the first feedback period, the second feedback period, the fourth feedback period, and the fifth feedback period.

24. The apparatus of claim 19, wherein the index of the antenna panel inter-antenna phase factor indicated by the third parameter is an index of an antenna panel inter-antenna phase factor wideband component, and the at least one feedback cycle is a fourth feedback cycle that feeds back the index of the antenna panel inter-antenna phase factor wideband component; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period;

wherein the feeding back the first parameter of the precoding matrix in the first feedback period, the feeding back the second parameter of the precoding matrix in the second feedback period, and the feeding back the third parameter in at least one feedback period includes:

the sending unit is configured to use the same feedback cycle to feed back the first parameter, the second parameter, and the third parameter in a transmission time unit of a transmission unit at the same time.

25. The apparatus of claim 22 or 23, wherein a maximum bandwidth with which the apparatus is configured consists of at least M2 subbands, wherein the indices of the sub-band differential components of the antenna panel phase factors indicated in the third parameter include indices of sub-band differential components of antenna panel phase factors corresponding to M1 subbands, respectively, wherein the indices of the sub-band differential components of the antenna panel phase factors corresponding to M1 subbands, respectively, are part of the indices of the sub-band differential components of the antenna panel phase factors corresponding to M2 subbands, respectively, M2 > M1, and M2 and M1 are positive integers.

26. The apparatus of any one of claims 19-24, wherein the sending unit is further configured to feed back an indication parameter of the precoding matrix using a sixth feedback period, the indication parameter indicating a codebook mode corresponding to the precoding matrix, wherein the sixth feedback period is N9 times the first feedback period, the first feedback period is N10 times the second feedback period, and N9 and N10 are both integers greater than 1.

27. The apparatus of claim 26, wherein when the value of the indication parameter is 0, the index corresponding to the antenna panel inter-phase factor is an index of a wideband inter-panel phase factor, and the at least one feedback period is a same period as the first feedback period;

when the value of the indication parameter is 1, the index of the phase factor between the antenna panels comprises an index of a phase factor broadband component between the antenna panels and an index of a phase factor sub-band differential component between the antenna panels, and the at least one feedback cycle comprises a feedback cycle of the index of the phase factor broadband component between the antenna panels and a feedback cycle of the index of the phase factor sub-band differential component between the antenna panels;

28. A communication processing apparatus, characterized in that the apparatus comprises:

a sending unit, configured to send a reference signal, where the reference signal is used to determine a precoding matrix;

a receiving unit, configured to receive a first parameter that is fed back by a terminal device using a first feedback period, a second parameter that is fed back by using a second feedback period, and a third parameter that is fed back by using at least one feedback period;

29. The apparatus of claim 28, wherein the index of the antenna inter-panel phase factor is an index of a wideband inter-panel phase factor, and the at least one feedback period is a third feedback period; wherein,

30. The apparatus of claim 29, wherein the sending unit is further configured to send first configuration information to the terminal device, where the first configuration information is used to indicate a relationship between the first feedback period, the second feedback period, and the third feedback period.

31. The apparatus of claim 28, wherein the index of the antenna inter-panel phase factor comprises an index of an antenna inter-panel phase factor wideband component and an index of an antenna inter-panel phase factor subband differential component;

32. The apparatus of claim 31, wherein the receiving unit is further configured to receive second configuration information sent by the terminal device, where the second configuration information is used to indicate a relationship between the first feedback period, the second feedback period, the fourth feedback period, and the fifth feedback period.

33. The apparatus of claim 28, wherein the index of the antenna panel inter-antenna phase factor indicated by the third parameter is an index of an antenna panel inter-antenna phase factor wideband component, and the at least one feedback cycle is a fourth feedback cycle in which the index of the antenna panel inter-antenna phase factor wideband component is fed back; the first feedback period, the second feedback period and the fourth feedback period are the same feedback period;

receiving a first parameter of the precoding matrix fed back by the terminal device in a first feedback period, feeding back a second parameter of the precoding matrix in a second feedback period, and feeding back a third parameter in at least one feedback period, including:

the receiving unit is configured to receive that the terminal device uses the same feedback cycle to feed back the first parameter, the second parameter, and the third parameter on a transmission time unit of a transmission unit at the same time.

34. The apparatus of claim 31 or 32, wherein a maximum bandwidth with which the terminal device is configured consists of at least M2 subbands, wherein the indices of the sub-band differential components of the antenna panel phase factors indicated in the third parameter include indices of sub-band differential components of antenna panel phase factors corresponding to M1 subbands, respectively, wherein the indices of the sub-band differential components of the antenna panel phase factors corresponding to M1 subbands, respectively, are part of the indices of the sub-band differential components of the antenna panel phase factors corresponding to M2 subbands, respectively, M2 > M1, and M2 and M1 are positive integers.

35. The apparatus of any one of claims 28 to 33, wherein the receiving unit is further configured to receive an indication parameter of the precoding matrix fed back by the terminal device using a sixth feedback period, where the indication parameter indicates a codebook mode corresponding to the precoding matrix, and the sixth feedback period is N9 times the first feedback period, and the first feedback period is N10 times the second feedback period, where N9 and N10 are both integers greater than 1.

36. The apparatus of claim 35, wherein when the value of the indication parameter is 0, the index corresponding to the antenna panel inter-phase factor is an index of a wideband inter-panel phase factor, and the at least one feedback period is a same period as the first feedback period;