Information reporting method, terminal, and network side device

Abstract

The present disclosure provides an information reporting method, a terminal, and a network side device. The method comprises: determining first antenna port information and / or second antenna port information; and reporting, to the network side device, a precoding matrix indicator (PMI) corresponding to the first antenna port information and / or a target parameter corresponding to the second antenna port information, wherein the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are / is used for the network side device to determine a PMI corresponding to the second antenna port information.

Description

Information reporting methods, terminals, and network-side equipment

[0001] Cross-reference to related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 202510179292.8, filed on February 18, 2025, entitled "Information Reporting Method, Terminal and Network Side Device", which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to the field of communication technology, and in particular to an information reporting method, a terminal, and a network-side device. Background Technology

[0004] In 5G, energy-saving related measurement reporting is based on existing codebook structures (Rel-15 Type I SP codebook and Rel-15 Type I MP codebook), and the codebook structure differs depending on the number of antenna ports. The network cannot derive the PMI under other port assumptions from the precoding matrix indicator (PMI) fed back by the terminal under one port assumption. To obtain Channel State Information (CSI) feedback under various ports, the terminal needs to perform PMI measurements and reporting separately for each port assumption, resulting in high feedback overhead for the terminal. Summary of the Invention

[0005] This disclosure provides an information reporting method, a terminal, and a network-side device to solve the problem in related technologies where the terminal needs to perform PMI measurement and reporting separately for various port assumptions, resulting in high feedback overhead for the terminal.

[0006] Firstly, this disclosure provides an information reporting method, including:

[0007] Determine the first antenna port information and / or the second antenna port information;

[0008] The network-side device reports the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information; the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

[0009] Secondly, this disclosure provides an information reporting method, including:

[0010] The PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the receiving terminal;

[0011] Based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, determine the PMI corresponding to the second antenna port information.

[0012] Thirdly, this disclosure also provides an information reporting device, comprising:

[0013] A determining unit is used to determine the first antenna port information and / or the second antenna port information;

[0014] The reporting unit is used to report the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information to the network-side device; the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

[0015] Fourthly, this disclosure also provides an information reporting device, comprising:

[0016] The receiving unit is used to receive the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the terminal.

[0017] The determining unit is used to determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information.

[0018] Fifthly, this disclosure also provides a terminal, including a memory, a transceiver, and a processor, wherein:

[0019] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs in the memory and implementing the information reporting method described in the first aspect above.

[0020] Sixthly, this disclosure also provides a network-side device, including a memory, a transceiver, and a processor, wherein:

[0021] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs in the memory and implementing the information reporting method described in the second aspect above.

[0022] In a seventh aspect, this disclosure also provides a processor-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the information reporting method as described above.

[0023] Eighthly, this disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the information reporting method as described above.

[0024] The information reporting method, terminal, and network-side device provided in this disclosure allow the terminal to report the precoding matrix indication (PMI) corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. The network-side device can then determine the PMI corresponding to the second antenna port information based on the PMI reported by the terminal. This allows the network-side device to easily obtain the PMI under other port assumptions with minimal feedback overhead from the terminal, thus obtaining PMI information for more port assumptions. This enables the determination of suitable precoding codewords for subsequent PDSCH transmission, effectively solving the problem in related technologies where the terminal needs to perform PMI measurement and reporting separately for multiple port assumptions, resulting in high feedback overhead for the terminal. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 is one of the flowcharts of the information reporting method provided in this disclosure.

[0027] Figure 2 is one of the schematic diagrams of the main lobe direction of the basis vector under different numbers of antenna ports provided in this disclosure.

[0028] Figure 3 is a second schematic diagram of the main lobe direction of the basis vector under different numbers of antenna ports provided in this disclosure.

[0029] Figure 4 is the second flowchart of the information reporting method provided in this disclosure.

[0030] Figure 5 is one of the schematic diagrams of the information reporting device provided in this disclosure.

[0031] Figure 6 is a second schematic diagram of the information reporting device provided in this disclosure.

[0032] Figure 7 is a schematic diagram of the terminal provided in this disclosure.

[0033] Figure 8 is a schematic diagram of the network-side device provided in this disclosure. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0035] The information reporting method, terminal, and network-side equipment of this disclosure are described below with reference to Figures 1-8.

[0036] To facilitate a clearer understanding of the technical solutions of the embodiments of this disclosure, some technical content related to the embodiments of this disclosure will be introduced first.

[0037] In 5G, energy-saving related measurement reporting is based on existing codebook structures (Rel-15 Type I SP codebook and Rel-15 Type I MP codebook). The terminal provides PMI feedback for a specific antenna port configuration. This PMI cannot be directly used for precoding transmission on other ports. This is mainly because the spatial domain (SD) basis lengths corresponding to the PMIs under different ports are different. Directly using the SD basis vectors and combining coefficients corresponding to some ports for precoding transmission may result in poor transmission performance. Under the current codebook structure, the network cannot derive the PMIs for other port assumptions based on the PMIs fed back by the terminal under one port assumption. To obtain CSI feedback for various ports, the terminal needs to perform PMI measurements and reporting separately for each port assumption. Therefore, the processing complexity and feedback overhead of the terminal are both high.

[0038] For example, the CSI measurement reporting process for 5G New Radio (NR) energy saving is as follows:

[0039] In the 5G NR energy-saving project, two spatial adaptive modes are supported: Type I and Type II. In Type I spatial adaptive mode, all antenna elements associated with a logical antenna port are turned off / activated, and the corresponding RF channels and antenna elements are connected in a sub-array manner. In Type II spatial adaptive mode, a subset / a subset of antenna elements associated with a logical antenna port are turned off / activated, and the corresponding RF channels and antenna elements are fully connected. 5G NR supports the network side configuring a reporting configuration containing multiple sub-configurations for the terminal. Each sub-configuration corresponds to a spatial adaptive mode, and the terminal measures and reports the reference signal corresponding to each sub-configuration separately. The network side determines which spatial adaptive mode can meet the transmission requirements based on the terminal's reporting.

[0040] For example, the Rel-15 Type I SP codebook design is as follows:

[0041] When the number of antenna ports is greater than or equal to 4, the PMI codebook parameter i fed back by the terminal 1,1 i 1,2 i 1,3 , i2, where i 1,1 i 1,2 i 1,3 For the broadband feedback parameters, i1 corresponds to the composite codebook parameter, and i2 corresponds to the sub-band codebook parameter, as follows:

[0042] Taking Level 1 and Level 2 feedback as examples, the PMI feedback below the codebook model is represented by Tables 1 and 2, i 1,3 The mappings to k1 and k2 are shown in Table 3.

[0043] Table 1. Layer 1 CSI Reporting

[0044] Table 2. Layer 2 CSI Reporting

[0045] Table 3 i 1，3 Mapping to k1 and k2

[0046] In these tables, N1 and N2 are configured by higher-level parameters. N1 represents the number of antenna ports in the horizontal direction, and N2 represents the number of antenna ports in the vertical direction. O1 represents the oversampling factor in the horizontal direction, and O2 represents the oversampling factor in the vertical direction. The corresponding number of ports for the measurement resource CSI-RS is 2N1N2. The parameters in the tables are shown below: θ p =e jπp / 4

[0047] When N2 is greater than 1, u m It is a set of DFT vectors containing N2O2 Discrete Fourier Transform (DFT) basis vectors, numbered from 0 to N2O2-1. The terminal uses the codebook parameter i 1,2 Indicates the index of the selected DFT vector. V l,m For u m The Kronecker product of the DFT basis vectors in another set of DFT basis vectors, which contains N1O1 DFT basis vectors numbered from 0 to N1O1-1, is used by the terminal via the codebook parameter i. 1,1This indicates the index of the DFT vector selected from this set of DFT basis vectors. The DFT vector selected by the terminal can also be referred to as the SD basis vector of the codebook, i 1,1 and i 1,2 The vectors representing the DFT are called the horizontal SD basis vectors and the vertical SD basis vectors, respectively.

[0048] Figure 1 is a flowchart of one of the information reporting methods provided in this disclosure. The execution subject of this method can be a terminal, and the method includes the following steps:

[0049] Step 101: Determine the first antenna port information and / or the second antenna port information.

[0050] Specifically, in related technologies, in order to obtain Channel State Information (CSI) feedback for each port number, the terminal needs to measure and report PMI and CQI separately for various port assumptions, resulting in high feedback overhead for the terminal.

[0051] To address the aforementioned issues, this embodiment first determines the first antenna port information and the second antenna port information. Optionally, the first antenna port information and the second antenna port information can be determined based on the configuration information of the network-side device, based on predefined rules, or based on other methods; this embodiment does not impose specific limitations. Optionally, the first antenna port information and / or the second antenna port information configured by the network side for the terminal may include the number of horizontal ports N1 and / or the number of vertical ports N2, or configure the total number of antenna ports; or, it may include the maximum number of horizontal ports N1 and / or the maximum number of vertical ports N2, or configure the total maximum number of antenna ports; or, the network side configures the port pattern to the terminal in the form of antenna port groups. For example, the first antenna port information may include the (maximum) number of horizontal antenna ports N1, the (maximum) number of vertical antenna ports N2, and the total (maximum) number of antenna ports in a group; optionally, the network side may also configure the oversampling factor O1 in the horizontal direction and the oversampling factor O2 in the vertical direction as the first antenna port information and / or the second antenna port information. Optionally, the terminal determines the first antenna port information and / or the second antenna port information based on the reporting requirements configured on the network side. For example, the minimum or maximum number of antenna ports required to meet the reporting requirements can be determined as the first port information, and the remaining ports as the second port information. Alternatively, the terminal can determine the first port information based on the reporting requirements and the second port information based on the network side configuration. After determining the first antenna port information and / or the second antenna port information, the terminal can also determine which ports' PMIs to report.

[0052] Step 102: Report the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information to the network-side device; the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

[0053] Specifically, after determining the first antenna port information and / or the second antenna port information, the terminal can report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. Optionally, the target parameters may include information related to determining the PMI corresponding to the second antenna port information, such as basis vectors or combining factors. After receiving the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the terminal, the network-side device can determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information. Thus, with a relatively small feedback overhead from the terminal, the network-side device can easily obtain the PMI under other port assumptions, obtain the PMI information for more port assumptions, and determine suitable precoding codewords for subsequent Physical Downlink Shared Channel (PDSCH) transmission. This effectively solves the problem in related technologies where the terminal needs to perform PMI measurement and reporting separately for multiple port assumptions, resulting in high feedback overhead for the terminal.

[0054] For example, in some embodiments, the terminal feeds back the PMI of the first antenna port and the combining factor of the second antenna port to the network-side device. The network side determines the basis vector of the second antenna port based on the first antenna port information reported by the terminal, and then determines the PMI based on the combining factor of the second antenna port reported by the terminal. Optionally, if the terminal reports the PMI corresponding to the first antenna port information to the network-side device based on the first codebook (block codebook), the network-side device can also determine the PMI corresponding to the second antenna port information based on the received PMI corresponding to the first antenna port information. The relevant content will be explained in subsequent embodiments.

[0055] In the method of the above embodiments, after the terminal reports the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information to the network-side device, the network-side device can determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information reported by the terminal. Thus, with a small feedback overhead for the terminal, the network-side device can also easily obtain the PMI under other port assumptions, obtain the PMI situation of more port assumptions, and determine suitable precoding codewords for subsequent PDSCH transmission. This effectively solves the problem in related technologies where the terminal needs to perform PMI measurement and reporting for multiple port assumptions separately, resulting in high feedback overhead for the terminal.

[0056] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following:

[0057] Basis vectors and merging factors.

[0058] Specifically, the target parameters corresponding to the second antenna port information in this embodiment may include basis vectors and combining factors. The basis vectors may be spatial basis vectors, frequency basis vectors, time-domain Doppler basis vectors, angle-domain basis vectors, etc. The combining factors may be inter-polarity combining factors, inter-antenna group combining factors, inter-resource combining factors, etc.

[0059] For example, (1) the terminal can report the PMI corresponding to the first antenna port information (such as the PMI of port 128) and the SD basis vector corresponding to the second antenna port (such as the SD basis vectors corresponding to ports 64, 32 and 16). Assuming that the inter-polarization combining factor co-phasing corresponding to the second antenna port is the same as the combining factor corresponding to the first antenna port, the combining factor corresponding to the second antenna port can reuse the combining factor contained in the PMI corresponding to the first antenna port, and the terminal does not need to feed back the combining factor for the second antenna port. In some embodiments, the network side configures the terminal to report the SD basis vectors of the four port assumptions. In addition, the network side configures the N1, N2, O1 and O2 values ​​corresponding to the four port assumptions respectively. The terminal can determine the SD basis vector set according to the N1, N2, O1 and O2 values ​​configured by the network side. In some embodiments, the network side configures the terminal to report the SD basis vectors of the four port assumptions and configures the N1 and N2 values ​​of the four port assumptions respectively. The terminal determines, according to predefined rules, that the O1 and O2 values ​​corresponding to the second antenna port are equal to the O1 and O2 values ​​corresponding to the first antenna port, or that the O1 and O2 values ​​corresponding to the second antenna port are twice or half of the O1 and O2 values ​​corresponding to the first antenna port. The terminal can then determine the SD basis vector set. Optionally, when reporting the SD basis vectors corresponding to the second antenna port, the terminal can either directly report the SD basis vector index or report it differentially based on the SD basis vector index corresponding to the first antenna port, i.e., report the SD basis offset value between the number of second antenna ports and the number of first antenna ports. Optionally, in this embodiment, N1 represents the number of antenna ports in the horizontal direction, N2 represents the number of antenna ports in the vertical direction, O1 represents the oversampling factor in the horizontal direction, O2 represents the oversampling factor in the vertical direction, and the basis vectors can be DFT basis vectors, eigenvectors, or Discrete Cosine Transform (DCT) basis vectors, etc., and this embodiment does not impose any limitations on these.

[0060] (2) The terminal can report the PMI (including basis vectors and combining factors) corresponding to the first antenna port, and the combining factor corresponding to the second antenna port. Assuming the basis vector corresponding to the second antenna port can be directly obtained from the number of first antenna ports, the terminal does not need to additionally feed back the basis vector for the second antenna port number. In some embodiments, as shown in Figure 2, assuming the first antenna port number is 128 ports and the second antenna port number is 32 and 64 ports, the network side can determine that the main lobe direction of the DFT basis vector corresponding to the second antenna port is the same as the main lobe direction of the DFT vector corresponding to the first antenna port. As shown in Figure 3, if the DFT vector resolutions corresponding to various ports are different, the main lobe direction of the second antenna port number determined by the network side will deviate somewhat from the first antenna port number. Optionally, the basis vector of the high port can be calculated from the basis vector of the low port, or the basis vector of the low port can be calculated from the SD basis vector of the high port.

[0061] (3) The terminal may also report both the basis vector and the merging factor corresponding to the second antenna port, or the terminal may report the PMI corresponding to the second antenna port. In some embodiments, the terminal may also report complete PMI information for the second antenna port. It should be noted that in related technologies, the information reported by the terminal each time can only include the PMI under a certain port, while in this disclosure, the information reported at one time can include the PMI corresponding to the first antenna port or the PMI corresponding to the second antenna port. Compared with the traditional method, the terminal reports more reporting quantities corresponding to port assumptions, which can effectively reduce the processing complexity and feedback overhead of the terminal. Optionally, when the terminal reports the PMI corresponding to one port assumption, it may also report at least one of the following for other port assumptions: frequency domain basis vector, angle domain basis vector, Doppler domain basis vector, amplitude merging factor, inter-polarization merging factor, inter-resource merging factor, inter-group merging factor, etc. This disclosure does not impose any restrictions on this aspect.

[0062] In the method described above, the target parameters reported by the terminal include at least one of the basis vector corresponding to the second antenna port and the merging factor corresponding to the second antenna port. With a small feedback overhead from the terminal, the network-side device can accurately determine the PMI corresponding to the second antenna port, thereby effectively solving the problem of high terminal feedback overhead.

[0063] In some embodiments, determining the first antenna port information and / or the second antenna port information includes at least one of the following:

[0064] Based on the configuration information of the network-side equipment, determine the first antenna port information and / or the second antenna port information;

[0065] The first antenna port information and / or the second antenna port information are determined according to predefined rules;

[0066] Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0067] Specifically, in this embodiment, the first antenna port information and / or the second antenna port information can be determined based on the configuration information of the network-side device, or based on predefined rules, or based on the CQI requirements or energy-saving requirements corresponding to the target service. This allows the terminal to flexibly and accurately determine the first antenna port information and / or the second antenna port information in multiple ways, and thus efficiently and accurately report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, effectively solving the problem of high terminal feedback overhead.

[0068] For example, the terminal can determine the first antenna port information and / or the second antenna port information based on the configuration information of the network-side equipment. The network side configures the number of horizontal ports N1 and vertical ports N2 corresponding to the first antenna port information and / or the second antenna port information, or configures the total number of antenna ports, and the terminal determines the horizontal and vertical port division. When the parameters corresponding to the network-side configuration codebook are N1=8 and N2=8, it implies that there are 8 ports in the horizontal direction and 8 ports in the vertical direction of the antenna array, and the total number of ports is 128 in the case of cross-polarization. When the network side configures the terminal to report for 32 ports, the terminal can report based on N1=4 and N2=4, N1=8 and N2=2, or N1=2 and N2=8, as long as any dimension does not exceed the total antenna dimensions. The specific 32 ports can be reported by the terminal to the network side. Alternatively, the network side can determine the port situation corresponding to the first antenna port information and / or the second antenna port information through measurement resource-related configuration. To reduce signaling overhead, a port indication method based on antenna groups can be considered. For example, in the case of 128 ports, if every 4 ports are grouped together, there are at most 32 antenna groups. The network side can use 32 bits to indicate the first antenna port information and / or the second antenna port information measured by the terminal through bit mapping. Alternatively, if the network side has 8 ports grouped together, there are at most 16 antenna groups. The network side can use 32 bits to indicate the first antenna port information and / or the second antenna port information through bit mapping; or it can use 64 bits to indicate the first antenna port information and / or the second antenna port information through bit mapping.

[0069] Optionally, the terminal may also determine the first antenna port information and / or the second antenna port information based on predefined rules, such as the terminal determining the first antenna port information and / or the second antenna port information based on the values ​​of N1 and N2 and / or the length of the SD basis vector.

[0070] Optionally, the terminal can also determine the first antenna port information and the second antenna port information that meet the CQI requirements or energy-saving requirements corresponding to the energy-saving service. This allows the terminal to report PMI under port assumptions that meet certain CQI or energy-saving requirements to the network-side equipment. For example, based on measurements, the terminal determines that ports 16, 32, 48, and above can all meet the CQI requirements. Optionally, the CQI requirement threshold can be configured to the terminal by the network side or pre-defined in the protocol. Meeting the CQI requirements can be achieved by the CQI index being greater than the CQI index threshold (e.g., the terminal reports a CQI performance higher than the threshold, and the reported CQI meets subsequent transmission requirements), or by the CQI index being less than the CQI index threshold (e.g., the terminal reports a CQI performance lower than the threshold, and the reported CQI meets energy-saving requirements), or by the CQI index being greater than the first CQI index threshold and less than the second CQI index threshold (the terminal reports a CQI that meets both transmission and energy-saving requirements).

[0071] Optionally, the terminal can also determine and report antenna port information based on other metrics similar to CQI. For example, the terminal can report the port assumption with the smallest port number / CQI value (or SINR value), or the port assumption with the largest CQI value (or SINR value) / port number. This ensures the terminal reports the most energy-efficient port combination, avoiding the terminal always reporting based on the best CQI / SINR performance. Alternatively, the terminal can report all port assumptions that meet the performance metrics. For instance, the threshold values ​​corresponding to the port number / CQI (or SINR) or CQI (or SINR) / port number metrics are configured to the terminal by higher-layer parameters, and the terminal reports port assumptions based on these configured threshold values. In addition to reporting the number of ports that meet the performance metrics, the terminal can also report the metric values ​​corresponding to one or more ports. These metric values ​​can be broadband or subband.

[0072] The method described in the above embodiments allows the terminal to flexibly and accurately determine the first antenna port information and / or the second antenna port information based on various methods. This enables the terminal to efficiently and accurately report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, effectively solving the problem of high terminal feedback overhead.

[0073] In some embodiments, the reporting requirement includes at least one of the following:

[0074] The target indicator is greater than the first threshold;

[0075] The target indicator is less than the second threshold;

[0076] The target indicator is greater than the first threshold and less than the second threshold.

[0077] Specifically, in this embodiment, the network side's requirements for CQI are different. The terminal can report PMI under port assumptions that meet certain CQI requirements to the network-side device. Optionally, a CQI greater than a first threshold can effectively meet performance requirements, a CQI less than a second threshold can effectively achieve energy saving, and a CQI greater than the first threshold and less than the second threshold can balance performance and energy saving. Therefore, the terminal can determine the first antenna port information and / or the second antenna port information according to the reporting requirements, and only report PMI under port assumptions that meet certain reporting requirements to the network-side device, effectively solving the problem of high terminal feedback overhead. Optionally, the terminal can also determine and report antenna port information based on other indicators, such as based on the number of ports / CQI value (or SINR value), or based on the CQI value (or SINR value) / number of ports, which will not be elaborated further in this embodiment.

[0078] In some embodiments, reporting the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device includes:

[0079] The target codebook is used to report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. The target codebook includes at least one of the following: a codebook predefined by the protocol, a first codebook and a second codebook; the first codebook includes multiple base vector groups; the second codebook contains base vectors of various lengths.

[0080] Specifically, in this embodiment of the present disclosure, the terminal can report the PMI corresponding to the first antenna port and / or the target parameter corresponding to the second antenna port to the network-side device based on the existing codebook structure (Rel-15 Type I SP codebook and Rel-15 Type I MP codebook). Alternatively, it can use a predefined first codebook (block codebook) and a second codebook (variable basis vector length codebook) to report the PMI corresponding to the first antenna port and the target parameter corresponding to the second antenna port. This allows the terminal to accurately report the PMI corresponding to the first antenna port and the target parameter corresponding to the second antenna port in multiple ways.

[0081] Optionally, in the first codebook, one polarization direction corresponds to K SD basis vector groups, or regardless of polarization direction, all antenna ports correspond to K SD basis vector groups. The length of the SD basis vectors is less than N1*N2, such as N1*N2 / K or 2N1*N2 / K, where K = 2, 3, 4, 6, 8, etc. The terminal needs to provide feedback on the merging factor between the K SD basis vector groups. The merging factor can be at least one of the following: the merging factor of the k-th group relative to the first group; the merging factor of the k-th group relative to the n-th group, where n is configured by the network side or determined by the terminal and reported to the network side. That is, in this embodiment, antenna grouping can be performed within one polarization direction, or all antenna ports can be jointly grouped regardless of polarization direction. Optionally, antenna grouping can be performed separately in the horizontal and vertical directions, or antenna ports can be grouped as a whole regardless of horizontal and vertical directions; this embodiment does not impose specific limitations.

[0082] For example, in the first codebook, the antenna ports in the horizontal and vertical directions are divided into multiple groups, each corresponding to an SD basis vector. Taking N1=8 and N2=4 as an example, in the non-grouped codebook, the lengths of the vertical and horizontal SD basis vectors are 8 and 4 respectively, i.e., DFT vectors of length 8 and 4. In the grouped codebook, the 8 horizontal antenna ports can be further divided into 2 groups, with each group corresponding to an SD basis vector of length 4; or the 8 antenna ports can be further divided into 4 groups, with each group corresponding to an SD basis vector of length 2. Taking 128 ports as an example, assuming the SD basis vector length in the codebook before grouping is 64 (64 ports per polarization direction), the SD basis vector length after grouping is only 16. Taking any sub-block, two polarization directions can form a 32-port precoding codeword. Taking any two sub-blocks, two polarization directions can form a 64-port precoding codeword. And so on, the network side can determine the 32- or 64-port PMI based on the 128-port PMI fed back by the terminal. Assuming the network side instructs the terminal to return the PMI corresponding to port 128, and the precoding codeword corresponds to 4 antenna groups (precoding sub-blocks), after receiving the PMI corresponding to port 128 from the terminal, the network side can determine the precoding codeword corresponding to port 64 based on the precoding weights corresponding to the first 64 ports (i.e., 2 precoding sub-blocks, including SD basis vectors and combining factors).

[0083] Optionally, the length of the basis vectors in the second codebook is variable. Different basis vector lengths correspond to different port assumptions, meaning the second codebook can contain SD basis vectors corresponding to different port assumptions. Optionally, the terminal can indicate the DFT vector length and the DFT vector at that length. For example, a codebook may have four possible lengths for the horizontal DFT vector: 64, 32, 16, and 8, and two possible lengths for the vertical DFT vector: 8 and 4. The terminal can first use 2 bits to indicate that the horizontal DFT vector length is 32, and use 1 bit to indicate that the vertical DFT vector length is 4. Then, parameters are used to indicate the recommended DFT vector indices of lengths 32 and 4, respectively. Optionally, DFT vectors of different lengths can also be arranged together and indicated using a single parameter. For example, the first 64 vectors in the horizontal direction are DFT vectors of length 64, the 65th to 96th vectors are DFT vectors of length 32, and the 97th to 112th vectors are DFT vectors of length 16, with the parameter ranging from 1 to 112. The network side can determine the specific DFT vector length and which DFT vector the terminal recommends based on the terminal's instructions. A DFT vector with a length less than 64 can be either a vector of length 64 but whose actual DFT vector length is less than 64, or a vector of length 64 composed of multiple concatenated DFT vectors of length less than 64.

[0084] For example, the second codebook structure is as follows:

[0085] Second codebook structure one: The lengths of the SD basis vectors are different in different precoding methods; for example, the matrix corresponding to the codeword in wideband precoding is... or B1 and C1 are matrices corresponding to multiple SD basis vectors for each polarization direction. B1 can contain SD basis vectors of length 16, and C1 can contain SD basis vectors of length 32. Assuming N1 = 8 and N2 = 8, the dimensions of B1 and C1 in the precoding codeword are both N1N2*K, where K is the number of SD basis vectors. For example, B1 = (b1 … b4) and C1 = (c1 … c4). In B1, all basis vectors (b1 … b4) do not contain zero values, and the DFT vector length is N1N2; in C1, all basis vectors (c1 … c4) contain zero values, and the vector length in c1 … c4 is still N1N2, but the length of non-zero values ​​is N1N2 / 2 or N1N2 / 4, and the rest are zero values, corresponding to DFT vectors of length N1N2 / 2 or N1N2 / 4. In this way, the terminal selects different port hypothesis numbers by choosing different precoding codewords.

[0086] Second codebook structure two: In B2, multiple vectors have the same length, but the actual lengths of the DFT vectors are different. For example, some vectors contain DFT vectors of length 16, some contain DFT vectors of length 32, and some contain DFT vectors of length 64. Compared to a DFT vector of length 64, a DFT vector of length 16 means that only 16 elements in a vector of length 64 are non-zero values.

[0087] Second codebook structure three: The lengths of the multiple DFT vectors in B3 are also different; for example, B3 = (b1 … b4) contains four vectors of length 64, and each DFT vector can also contain one or more DFT vectors of length 16 or 32. For example, B3 = (b1 … b4), c1 = t1, where t1 is a DFT vector of length 64 and k1 is a DFT vector of length 32.

[0088] Optionally, within an existing codebook structure, multiple CSI-RS resources are configured within a CSI resource set. Each CSI-RS resource can have a different number of ports, and each CSI-RS resource corresponds to a spatial adaptive mode. The terminal measures and reports on multiple CSI-RS resources within a CSI resource set. Optionally, the terminal reports PMI / CQI for T CSI-RS resources, where T is greater than or equal to 1, configured by the network side. For example, the terminal can select CSI-RS resources with better CQI, better L1-RSRP or L1-SINR values, or CSI-RS resources that meet CQI requirements. Optionally, the terminal can also perform PMI / CQI measurement and reporting for all CSI-RS resources in the CSI resource set. Optionally, if the network side configures the terminal to report PMI / CQI for P CSI-RS resources, the terminal can select T CSI-RS resources for measurement and reporting. The P CSI-RS resources configured on the network side correspond to the P spatial adaptive modes that the network side is of interest to. The T CSI-RS resources reported by the terminal are the T spatial adaptive modes that are of interest from a performance perspective. Using this method, measurements of multiple antenna patterns can be reported within a single reporting setting without defining reporting sub-configurations, thus simplifying the signaling process.

[0089] The method described in the above embodiments allows the terminal to report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device based on the existing codebook structure (Rel-15 Type I SP codebook and Rel-15 Type I MP codebook). Alternatively, the terminal can report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information by defining a group codebook and a variable basis vector length codebook. This enables the terminal to accurately report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information in multiple ways.

[0090] In some embodiments, when reporting the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device based on the first codebook or the second codebook, the method further includes at least one of the following:

[0091] Determine the basis vector length or basis vector group based on the configuration information of the network-side devices;

[0092] Determine the basis vector length or basis vector group according to predefined rules;

[0093] The terminal determines the length of the basis vectors or the basis vector group.

[0094] Specifically, when reporting the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device based on the first codebook or the second codebook, the terminal needs to determine the basis vector length or basis vector group in order to further determine the PMI. Optionally, the terminal can determine the basis vector length or basis vector group according to the configuration information of the network-side device; it can also determine the basis vector length or basis vector group according to predefined rules; or the terminal can determine the basis vector length or basis vector group independently.

[0095] For example, the length or number of SD base vector groups in the first codebook is configured by higher-layer signaling. The network side configures the SD base vector lengths as N1 = 8 and N2 = 8, indicating that the lengths of the SD base vectors in both the horizontal and vertical directions are both 8; alternatively, the SD base vector lengths can be represented by other parameters, such as M1 and M2, while parameters N1 and N2 still represent the number of antenna ports in the horizontal and vertical directions. Alternatively, with parameters N1 and N2 configured, the network side may additionally configure the number of SD base vector groups, such as 2 groups in the horizontal direction, 4 groups in the vertical direction, or a total of 4 groups, etc. The terminal can determine the SD base vectors based on the N1 and N2 values ​​configured by the network side, and / or the SD base vector length or number of groups configured by the network side.

[0096] Optionally, the SD base vector length can also be determined according to predefined rules, such as the number of ports of the measurement resources (e.g., CSI-RS resources) determined by the terminal, the number of ports or base vector length corresponding to each CSI-RS resource, and the number of SD base vector groups equal to the number of CSI-RS resources, etc.

[0097] Optionally, the terminal can also determine the base vector length or base vector group independently based on energy-saving requirements. For example, if the terminal determines the SD base vector length to be the shortest base vector length that meets CQI requirements, and the network side is configured with a maximum of 128 ports, and the terminal determines that CQI on port 8 cannot meet the CQI threshold (below the CQI index threshold, and subsequent transmission cannot be supported), while CQI on ports 16, 32, and 64 can meet the transmission requirements, then the terminal determines the SD base vector length to be 16 and feeds back the determined base vector length to the network side. Alternatively, the terminal can also determine the SD base vector length to be the longest base vector length that meets CQI requirements. If the network side is configured with a maximum of 128 ports, and the terminal determines that CQI on port 64 cannot meet the CQI threshold (greater than the CQI index threshold, or not between two CQI index thresholds, and subsequent energy-saving transmission cannot be supported), while CQI on ports 16 and 32 can meet the requirements, then the terminal determines the SD base vector length to be 32 and feeds back the determined base vector length to the network side.

[0098] In some embodiments, the information reporting method further includes:

[0099] Report first information to the network-side device; the first information includes at least one of the following:

[0100] Channel Quality Indicator (CQI) information, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0101] Specifically, during the process of reporting the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device, the terminal can also report Channel Quality Indicator (CQI) information, the ratio of port number to CQI, the ratio of CQI to port number, antenna port information that meets energy-saving requirements, and antenna port information that meets channel quality requirements. This allows the network-side device to accurately obtain the CQI status of the ports and determine which port assumptions are more energy-efficient or which port assumptions meet channel quality requirements. Optionally, the terminal can also report the CQI for the first number of ports, and the difference between the CQI for the second number of ports and the CQI for the first number of ports. This allows the terminal to reflect the CQI status of more port assumptions with less feedback overhead, effectively reducing the terminal's feedback overhead. For example, the terminal can report the PMI corresponding to port 128, and the CQI corresponding to ports 128 and 64. Assuming comparable interference and noise levels across all ports, the ratio of the useful signal from port 128 to port 64, fed back by the terminal, can be either broadband or subband-based. The useful signal can be the signal power strength calculated using channel information and PMI parameters. Alternatively, the terminal can feed back the ratio of the CQI from port 128 to port 64, or a scaling factor, or a CQI offset value, equivalent to differential CQI reporting, thereby effectively reducing the terminal's feedback overhead.

[0102] Optionally, the terminal can provide more information to the network side, reporting CQI for multiple ports, so that the network side can determine which antenna port can achieve both energy saving and meet transmission requirements. When the terminal reports CQI for multiple ports, the corresponding port for CQI reporting is determined based on the following method:

[0103] In some embodiments, the terminal can determine which ports' corresponding CQIs to report based on higher-layer parameter configuration. For example, the network side configures multiple sets of N1 and N2 values ​​for the terminal to report CQIs. The N1 and N2 values ​​are typically integer multiples of the SD basis vector length.

[0104] In some embodiments, the terminal can determine which ports' corresponding CQIs to report based on predefined rules. For example, the terminal determines this based on configured N1 and N2 values ​​and / or the SD base vector length. Optionally, the N1 and N2 values ​​determine which ports' corresponding CQIs to report. For example, the terminal might report PMIs corresponding to ports N1×N2×2, and the terminal might report CQIs corresponding to ports N1×N2×2, N1×N2, N1×N2 / 2, and N1×N2 / 4, etc. Optionally, the base vector length value can also determine which ports' corresponding CQIs to report. For example, if the base vector length is K, the terminal might report CQIs corresponding to ports 2K, 4K, 8K, and 16K.

[0105] In some embodiments, the terminal may determine which ports' CQIs to report based on the basis vector length and the values ​​of N1 and N2. In this case, the port corresponding to the CQI is assumed to be N1×N2 / K.

[0106] In some embodiments, the terminal may also determine a port assumption that meets the CQI requirements and report the CQI corresponding to the port assumption to the network side.

[0107] For example, the method for terminal feedback of CQI is at least one of the following:

[0108] Optionally, the terminal can report the CQI under the first port and the CQI under the second port to the network-side device. That is, the CQI under the first port and the CQI under the second port are reported in a non-differential manner.

[0109] Optionally, the terminal can also report the ratio of the CQI under the second port to the CQI under the first port, or the scaling factor, or the difference in CQI index. Alternatively, it can only report the ratio of the useful signal under the second port to the corresponding useful signal under the first port, or the scaling factor, that is, using a differential reporting method.

[0110] Optionally, the terminal can also report the PMI and CQI for a certain number of ports that meet the CQI requirements. The terminal can also report the CQI for a number of ports exceeding the required CQI. Here, "meeting the requirements" can mean that the CQI is greater than the CQI threshold configured on the network side, less than the CQI threshold configured on the network side, or the CQI is between the first and second CQI thresholds configured on the network side.

[0111] Optionally, the terminal may also report based on other indicators, such as the minimum port combination that meets a certain threshold for CQI, port number / CQI, CQI / port number, etc., or the terminal may report the most energy-efficient port combination. No specific restrictions are imposed in this embodiment.

[0112] For example, as shown in Figure 4, this embodiment of the disclosure also provides an information reporting method, applied to a network-side device, including:

[0113] Step 401: Receive the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the receiving terminal.

[0114] Step 402: Determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information.

[0115] Specifically, after receiving the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the terminal, the network-side device can determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information. Thus, with relatively low feedback overhead from the terminal, the network-side device can easily obtain the PMI under other port assumptions, obtaining PMI information for more port assumptions. This helps determine suitable precoding codewords for subsequent PDSCH transmission, effectively solving the problem in related technologies where the terminal needs to perform PMI measurement and reporting separately for multiple port assumptions, resulting in high feedback overhead for the terminal. Optionally, the target parameters may include information needed to determine the PMI corresponding to the second antenna port information, such as basis vectors or combining factors.

[0116] For example, in some embodiments, the target parameters corresponding to the second antenna port information reported by the terminal to the network side include N1 and N2 values ​​for four port assumptions. The network-side device determines, according to predefined rules, that the O1 and O2 values ​​under the second antenna port information are equal to the O1 and O2 values ​​under the first antenna port information, or that the O1 and O2 values ​​under the second antenna port number are twice or half of the O1 and O2 values ​​under the first antenna port number. The terminal can then determine the SD basis vector set and the PMI corresponding to the second antenna port information. Optionally, the terminal can report the high port PMI and low port target parameters to the network-side device, and the network-side device determines the low port PMI based on the information reported by the terminal. Alternatively, the terminal can feed back the low port PMI and high port target parameters to the network-side device, and the network side determines the high port PMI based on the information reported by the terminal. Optionally, high ports include ports 64 and 128, and low ports include ports 8 and 16.

[0117] The method described in the above embodiments allows the network-side device to determine the PMI corresponding to the second antenna port based on the PMI corresponding to the first antenna port information reported by the terminal and / or the target parameters corresponding to the second antenna port information. Thus, with a small feedback overhead from the terminal, the network-side device can easily obtain the PMI under other port assumptions, obtain the PMI information for more port assumptions, and determine suitable precoding codewords for subsequent PDSCH transmission. This effectively solves the problem in related technologies where the terminal needs to perform PMI measurement and reporting separately for multiple port assumptions, resulting in high feedback overhead for the terminal.

[0118] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following:

[0119] Basis vectors and merging factors.

[0120] Specifically, in this embodiment of the present disclosure, the target parameters reported by the terminal include at least one of the basis vector corresponding to the second antenna port and the merging factor corresponding to the second antenna port. Thus, with a small feedback overhead from the terminal, the network-side device can accurately determine the PMI corresponding to the second antenna port, effectively solving the problem of high terminal feedback overhead.

[0121] In some embodiments, before receiving the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information reported by the receiving terminal, the method further includes:

[0122] Send configuration information to the terminal; the configuration information is used to indicate the first antenna port information and / or the second antenna port information to the terminal.

[0123] Specifically, in this embodiment of the present disclosure, the network-side device can send configuration information to the terminal, indicating the first antenna port information and / or the second antenna port information. After receiving the configuration information from the network side, the terminal can accurately determine the first antenna port information and / or the second antenna port information, and efficiently and accurately report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, effectively solving the problem of high terminal feedback overhead.

[0124] For example, the network side can configure the number of horizontal ports N1 and vertical ports N2 to the terminal, or configure the total number of antenna ports; or, the network side can configure the port style to the terminal in the form of antenna port groups.

[0125] In the method described in the above embodiments, the network-side device can configure the first antenna port information and / or the second antenna port information to the terminal, thereby enabling the terminal to accurately report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, effectively solving the problem of high terminal feedback overhead.

[0126] In some embodiments, the information reporting method further includes:

[0127] The first information reported by the receiving terminal; the first information includes at least one of the following:

[0128] Channel Quality Indicator (CQI) information, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0129] Specifically, in this embodiment of the present disclosure, the terminal can report Channel Quality Indicator (CQI) information, the ratio of port number to CQI, the ratio of CQI to port number, antenna port information that meets energy-saving requirements, and antenna port information that meets channel quality requirements to the network side. This enables the network-side device to accurately obtain the CQI status of the ports and determine which port is assumed to be more energy-efficient or which port is assumed to meet channel quality requirements.

[0130] The information reporting device provided in this disclosure is described below. The information reporting device described below can be referred to in correspondence with the information reporting method described above. The information reporting device of this disclosure embodiment, as shown in Figure 5, is applied to a terminal and includes:

[0131] The determining unit 510 is used to determine the first antenna port information and / or the second antenna port information;

[0132] The reporting unit 520 is used to report the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information to the network-side device; the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

[0133] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following:

[0134] Basis vectors and merging factors.

[0135] In some embodiments, the determining unit 510 is specifically used for:

[0136] Based on the configuration information of the network-side equipment, determine the first antenna port information and / or the second antenna port information;

[0137] The first antenna port information and / or the second antenna port information are determined according to predefined rules;

[0138] Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0139] In some embodiments, the reporting requirement includes at least one of the following:

[0140] The target indicator is greater than the first threshold;

[0141] The target indicator is less than the second threshold;

[0142] The target indicator is greater than the first threshold and less than the second threshold.

[0143] In some embodiments, the reporting unit 520 is specifically used for:

[0144] The target codebook is used to report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. The target codebook includes at least one of the following: a codebook predefined by the protocol, a first codebook and a second codebook; the first codebook includes multiple base vector groups; the second codebook contains base vectors of various lengths.

[0145] In some embodiments, the determining unit 510 is further configured to:

[0146] Determine the basis vector length or basis vector group based on the configuration information of the network-side devices;

[0147] Determine the basis vector length or basis vector group according to predefined rules;

[0148] The terminal determines the length of the basis vectors or the basis vector group.

[0149] In some embodiments, the reporting unit 520 is further configured to:

[0150] Report first information to the network-side device; the first information includes at least one of the following:

[0151] Channel Quality Indicator (CQI) information, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0152] For example, this disclosure also provides an information reporting device, as shown in FIG6, applied to a network-side device, including:

[0153] The receiving unit 610 is used to receive the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the terminal.

[0154] The determining unit 620 is used to determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information.

[0155] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following:

[0156] Basis vectors and merging factors.

[0157] In some embodiments, the information reporting device further includes a sending unit, specifically used for:

[0158] Send configuration information to the terminal; the configuration information is used to indicate the first antenna port information and / or the second antenna port information to the terminal.

[0159] In some embodiments, the receiving unit 610 is further configured to:

[0160] The first information reported by the receiving terminal; the first information includes at least one of the following:

[0161] Channel Quality Indicator (CQI) information, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0162] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0163] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0164] Figure 7 illustrates a schematic diagram of a terminal, which includes a memory 720, a transceiver 710, a processor 700, and a user interface 730; wherein the processor 700 and the memory 720 can also be physically arranged separately.

[0165] The memory 720 is used to store computer programs; the transceiver 710 is used to send and receive data under the control of the processor 700.

[0166] Specifically, the transceiver 710 is used to receive and send data under the control of the processor 700.

[0167] In Figure 7, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described herein. A bus interface provides an interface. Transceiver 710 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 700 is responsible for managing the bus architecture and general processing, and memory 720 may store data used by processor 700 during operation.

[0168] The processor 700 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0169] The processor 700 calls a computer program stored in the memory 720 to execute any of the methods provided in the embodiments of this disclosure according to the obtained executable instructions, such as: determining first antenna port information and / or second antenna port information; reporting the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information to the network-side device; the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

[0170] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following:

[0171] Basis vectors and merging factors.

[0172] In some embodiments, determining the first antenna port information and / or the second antenna port information includes at least one of the following:

[0173] Based on the configuration information of the network-side equipment, determine the first antenna port information and / or the second antenna port information;

[0174] The first antenna port information and / or the second antenna port information are determined according to predefined rules;

[0175] Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0176] In some embodiments, the reporting requirement includes at least one of the following:

[0177] The target indicator is greater than the first threshold; the target indicator is used to indicate channel quality or energy efficiency.

[0178] The target indicator is less than the second threshold;

[0179] The target indicator is greater than the first threshold and less than the second threshold.

[0180] In some embodiments, reporting the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device includes:

[0181] The target codebook is used to report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. The target codebook includes at least one of the following: a codebook predefined by the protocol, a first codebook and a second codebook; the first codebook includes multiple base vector groups; the second codebook contains base vectors of various lengths.

[0182] In some embodiments, when reporting the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device based on the first codebook or the second codebook, the method further includes at least one of the following:

[0183] Determine the basis vector length or basis vector group based on the configuration information of the network-side devices;

[0184] Determine the basis vector length or basis vector group according to predefined rules;

[0185] The terminal determines the length of the basis vectors or the basis vector group.

[0186] In some embodiments, the method further includes:

[0187] Report first information to the network-side device; the first information includes at least one of the following:

[0188] Channel Quality Indicator (CQI) information, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0189] It should be noted that the terminal provided in this embodiment can implement all the method steps implemented by the embodiment where the execution subject is a terminal, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0190] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to related technologies, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0191] Figure 8 illustrates a schematic diagram of the physical structure of a network-side device, including a memory 820, a transceiver 810, and a processor 800; wherein the processor 800 and the memory 820 can also be physically arranged separately.

[0192] The memory 820 is used to store computer programs; the transceiver 810 is used to send and receive data under the control of the processor 800.

[0193] Specifically, the transceiver 810 is used to receive and send data under the control of the processor 800.

[0194] In Figure 8, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 800 and memory represented by memory 820. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described herein. A bus interface provides an interface. Transceiver 810 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 800 is responsible for managing the bus architecture and general processing, and memory 820 may store data used by processor 800 during operation.

[0195] The processor 800 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0196] The processor 800 calls the computer program stored in the memory 820 to execute any of the methods provided in the embodiments of this disclosure according to the obtained executable instructions, such as receiving the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the terminal;

[0197] Based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, determine the PMI corresponding to the second antenna port information.

[0198] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following:

[0199] Basis vectors and merging factors.

[0200] In some embodiments, before the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the receiving terminal, the method further includes:

[0201] Send configuration information to the terminal; the configuration information is used to indicate the first antenna port information and / or the second antenna port information to the terminal.

[0202] In some embodiments, the method further includes:

[0203] The first information reported by the receiving terminal; the first information includes at least one of the following:

[0204] Channel Quality Indicator (CQI) information, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0205] It should be noted that the network-side device provided in this disclosure can implement all the method steps implemented in the embodiments where the execution subject is a network-side device, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiments will not be described in detail here.

[0206] In some embodiments, a computer program product is also provided, which includes a computer program that can be stored on a non-transitory readable storage medium. When the computer program is executed by a processor, the computer enables the processor to execute the information reporting method provided in the embodiments where the execution subject is a terminal, or the information reporting method provided in the embodiments where the execution subject is a network-side device.

[0207] Specifically, the computer program products provided in this disclosure can implement all the method steps implemented in the above method embodiments and can achieve the same technical effects. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0208] In some embodiments, a non-transient readable storage medium is also provided, which stores a computer program for causing a processor to execute the information reporting method provided in the method embodiments where the execution subject is a terminal, or the information reporting method provided in the method embodiments where the execution subject is a network-side device.

[0209] The non-transiently readable storage medium provided in this disclosure can implement all the method steps implemented by the method embodiments with the execution subject being a terminal, or by the method embodiments with the execution subject being a network-side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0210] In some embodiments, a processor-readable storage medium is also provided, which stores a computer program for causing the processor to execute the information reporting method provided in the method embodiments where the execution subject is a terminal, or the information reporting method provided in the method embodiments where the execution subject is a network-side device.

[0211] The processor-readable storage medium provided in this disclosure can implement all the method steps implemented by the method embodiments where the execution subject is a terminal, or the method embodiments where the execution subject is a network-side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0212] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0213] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0214] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can 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 one or more flowchart illustrations and / or one or more block diagrams.

[0215] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0216] These processor-executable instructions can 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 one or more flowcharts and / or one or more block diagrams.

[0217] It should also be noted that the terms "first," "second," etc., used in the embodiments of this disclosure are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this disclosure can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited; for example, the first object can be one or more.

[0218] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0219] In this disclosure, "determining B based on A" means that factor A must be considered when determining B. It is not limited to "B can be determined based solely on A," but should also include: "determining B based on A and C," "determining B based on A, C, and E," and "determining C based on A, and further determining B based on C," etc. Additionally, it can include using A as a condition for determining B, for example, "when A satisfies the first condition, B is determined using the first method"; or "when A satisfies the second condition, B is determined," or "when A satisfies the third condition, B is determined based on the first parameter," etc. Of course, it can also be a condition where A is a factor in determining B, for example, "when A satisfies the first condition, C is determined using the first method, and B is further determined based on C," etc.

[0220] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0221] The technical solutions provided in this disclosure can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems and their evolved communication systems, and 6G (sixth generation mobile communication technology) systems. These systems may include terminals and network equipment. The systems may also include a core network component, such as Evolved Packet Core (EPC), 5G Core Network (5GC), and 6G Core Network (6GC).

[0222] The terminals disclosed in this embodiment can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminals may differ in different systems; for example, in a 5G system, a terminal can be called User Equipment (UE). Wireless terminals can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminals can be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments disclosed herein.

[0223] The network device disclosed in this embodiment may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with a wireless terminal via one or more sectors on the air interface, or other names. The network device may be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network equipment involved in this disclosure can be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB) in Wide-band Code Division Multiple Access (WCDMA), an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in this disclosure. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0224] Network devices and terminal devices can each use one or more antennas to perform multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO or multi-user MIMO. Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0225] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. An information reporting method, applied to a terminal, comprising: Determine the first antenna port information and / or the second antenna port information; Report the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device; The PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

2. The information reporting method of claim 1, wherein, The target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors or merging factors.

3. The information reporting method of claim 1, wherein, The determination of the first antenna port information and / or the second antenna port information includes at least one of the following: Based on the configuration information of the network-side device, determine the first antenna port information and / or the second antenna port information; The first antenna port information and / or the second antenna port information are determined according to predefined rules; or Based on the reported requirements, determine the information of the first antenna port and / or the second antenna port.

4. The information reporting method of claim 3, wherein, The reported requirements include at least one of the following: The target indicator is greater than the first threshold; or The target indicator is less than the second threshold.

5. The information reporting method of claim 4, wherein, The step of reporting the precoding matrix indication PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device includes: The target codebook is used to report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. The target codebook includes at least one of the following: a codebook predefined by the protocol, a first codebook, or a second codebook. The first codebook includes multiple base vector groups. The second codebook includes base vectors of various lengths.

6. The information reporting method of claim 5, wherein, When reporting the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device based on the first codebook or the second codebook, the method further includes at least one of the following: Determine the basis vector length or basis vector group based on the configuration information of the network-side devices; Determine the basis vector length or basis vector set according to predefined rules; or The terminal determines the basis vector length or basis vector group based on energy-saving requirements.

7. The information reporting method according to any one of claims 1 to 6, wherein, The method further includes: Report first information to the network-side device; the first information includes at least one of the following: Channel Quality Indicator (CQI) information, the ratio of port number to CQI, the ratio of CQI to port number, or the first antenna port information and / or the second antenna port information that meet the reporting requirements.

8. An information reporting method, comprising: The PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the receiving terminal; Based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information, determine the PMI corresponding to the second antenna port information.

9. The information reporting method of claim 8, wherein, The target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors or merging factors.

10. The information reporting method of claim 8, wherein, Before the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the receiving terminal, the method further includes: Send configuration information to the terminal; the configuration information is used to indicate the first antenna port information and / or the second antenna port information to the terminal.

11. The information reporting method according to any one of claims 8 to 10, wherein, The method further includes: Receive first information reported by the terminal; the first information includes at least one of the following: Channel Quality Indicator (CQI) information, the ratio of port number to CQI, the ratio of CQI to port number, or the first antenna port information and / or the second antenna port information that meet the reporting requirements.

12. A terminal, comprising a memory, a transceiver, and a processor: The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to execute the information reporting method as described in any one of claims 1 to 7.

13. A network-side device, comprising a memory, a transceiver, and a processor: a memory for storing the computer program; Transceiver, used to send and receive data under the control of the processor; A processor for performing the information reporting method as described in any one of claims 8 to 11.

14. An information reporting device, comprising: A determining unit is used to determine the first antenna port information and / or the second antenna port information; The reporting unit is used to report the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information to the network-side device. The PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used by the network-side device to determine the PMI corresponding to the second antenna port information.

15. An information reporting device, comprising: The receiving unit is used to receive the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information reported by the terminal. The determining unit is configured to determine the PMI corresponding to the second antenna port information based on the PMI corresponding to the first antenna port information and / or the target parameters corresponding to the second antenna port information.

16. A processor-readable storage medium storing a computer program for causing the processor to perform the method of any one of claims 1 to 7, or the method of any one of claims 8 to 11.

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