Information reporting method, terminal and network side device

Abstract

The application provides an information reporting method, a terminal and a network side device. The method comprises the following steps: determining first antenna port information and / or second antenna port information; reporting, to the network side device, a precoding matrix indication (PMI) corresponding to the first antenna port information and / or a target parameter corresponding to the second antenna port information; and the PMI corresponding to the first antenna port information and / or the target parameter corresponding to the second antenna port information are used for the network side device to determine a PMI corresponding to the second antenna port information. The method of the application solves the problem that, in the related art, a terminal needs to perform PMI measurement and reporting respectively for multiple port assumptions, and the feedback overhead of the terminal is high.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an information reporting method, a terminal, and a network-side device. Background Technology

[0002] 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

[0003] This application 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 multiple port assumptions, resulting in high feedback overhead for the terminal.

[0004] Firstly, this application provides an information reporting method, including: Determine the first antenna port information and / or the second antenna port information; 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.

[0005] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0006] In some embodiments, determining 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 equipment, 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; Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0007] In some embodiments, the channel quality requirements or energy-saving requirements include at least one of the following: The target indicator is greater than the first threshold; The target indicator is less than the second threshold; The target indicator is greater than the first threshold and less than the second threshold.

[0008] In some embodiments, 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 and a second codebook; the first codebook includes multiple base vector groups; the second codebook contains base vectors of various lengths.

[0009] 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: 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 group according to predefined rules; The terminal determines the length of the basis vectors or the basis vector group.

[0010] In some embodiments, 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, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0011] Secondly, this application provides an information reporting method, including: 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.

[0012] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0013] 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: 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.

[0014] In some embodiments, the method further includes: The first information reported by the receiving terminal; the first information includes at least one of the following: 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.

[0015] Thirdly, this application also provides 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 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.

[0016] Fourthly, this application also provides 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 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.

[0017] Fifthly, this application also provides a terminal, including a memory, a transceiver, and a processor, wherein: 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.

[0018] Sixthly, this application also provides a network-side device, including a memory, a transceiver, and a processor, wherein: 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.

[0019] In a seventh aspect, this application 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.

[0020] Eighthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the information reporting method as described above.

[0021] The information reporting method, terminal, and network-side device provided in this application 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

[0022] To more clearly illustrate the technical solutions in this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is one of the flowcharts illustrating the information reporting method provided in this application.

[0024] Figure 2 This is one of the schematic diagrams showing the main lobe direction of the basis vector under different numbers of antenna ports provided in this application.

[0025] Figure 3 This is the second schematic diagram of the main lobe direction of the basis vector under different numbers of antenna ports provided in this application.

[0026] Figure 4 This is the second flowchart illustrating the information reporting method provided in this application.

[0027] Figure 5 This is one of the schematic diagrams of the information reporting device provided in this application.

[0028] Figure 6 This is the second schematic diagram of the information reporting device provided in this application.

[0029] Figure 7 This is a schematic diagram of the terminal provided in this application.

[0030] Figure 8 This is a schematic diagram of the network-side device provided in this application. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following is combined Figures 1-8 This application describes the information reporting method, terminal, and network-side equipment.

[0033] To facilitate a clearer understanding of the technical solutions of the various embodiments of this application, some technical content related to the various embodiments of this application will be introduced first.

[0034] 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 on different ports are different. Directly using the SD basis vectors and combining coefficients corresponding to only a portion of the 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 for 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.

[0035] For example, the CSI measurement reporting process for 5G New Radio (NR) power saving is as follows: 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.

[0036] For example, the Rel-15 Type I SP codebook design is as follows: When the number of antenna ports is greater than or equal to 4, the terminal feeds back the PMI codebook parameters. ,in These are the broadband feedback parameters, corresponding to the composite codebook parameters. , The parameters for the sub-band codebook are as follows: Taking Level 1 and Level 2 feedback as examples, the PMI feedback below the codebook model is represented by Tables 1 and 2. arrive and The mapping is shown in Table 3.

[0037] Table 1. Layer 1 CSI Reporting

[0038] Table 2. Layer 2 CSI Reporting

[0039] Table 3 arrive and mapping

[0040] In these tables, and Configured by higher-level parameters, N1 represents the number of antenna ports in the horizontal direction. Indicates the number of antenna ports in the vertical direction. This represents the oversampling factor in the horizontal direction. This represents the oversampling factor in the vertical direction, corresponding to a CSI-RS port count of 2. The parameters in the table are shown below: when When it is greater than 1, A set of DFT vectors containing There are _ Discrete Fourier Transform (DFT) basis vectors, numbered from 0 to _ ... -1, the terminal uses codebook parameters Indicates the index of the selected DFT vector. for The Kronecker product of the DFT basis vectors in another set of DFT basis vectors, which contains... There are _DFT basis vectors, numbered from 0 to _ . -1, the terminal uses codebook parameters This 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. and The vectors representing the DFT are called the horizontal SD basis vectors and the vertical SD basis vectors, respectively.

[0041] Figure 1 This is one of the flowcharts illustrating the information reporting method provided in this application. The execution subject of this method can be a terminal, and the method includes the following steps: Step 101: Determine the first antenna port information and / or the second antenna port information.

[0042] 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 for various port assumptions, resulting in high feedback overhead for the terminal.

[0043] 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, or 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. and / or number of vertical ports Alternatively, configure the total number of antenna ports; or, include the maximum number of horizontal ports. and / or maximum number of vertical ports Alternatively, the network side can configure the total maximum number of antenna ports; or, the network side can configure port patterns for the terminal in the form of antenna port groups. For example, the first antenna port information may include a group of horizontal (maximum) antenna ports. Maximum number of antenna ports in the vertical direction Total (maximum) number of antenna ports; optionally, the network side will also be configured with and vertical oversampling factor The value serves 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, it may determine the minimum or maximum number of antenna ports that meet the reporting requirements as the first port information, and the other port numbers as the second port information. Alternatively, the terminal may 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0049] 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 domain 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.

[0050] 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 four port assumptions respectively. , , and The value can be configured on the network side. , , and The value determines the SD basis vector set. In some embodiments, the network side is configured to allow the terminal to report SD basis vectors for four port assumptions, and configure the values ​​for each of the four port assumptions. and The terminal determines the value corresponding to the second antenna port according to predefined rules. and The value corresponding to the first antenna port and The values ​​are equal, or the values ​​corresponding to the second line port. and The value is the one corresponding to the first antenna port. and By multiplying or halving the value, the terminal can determine the SD basis vector set. Optionally, when the terminal reports the SD basis vectors corresponding to the second antenna port, it can either directly report the SD basis vector index or report differentially based on the SD basis vector index corresponding to the first antenna port, that is, 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. Indicates the number of antenna ports in the vertical direction. This represents the oversampling factor in the horizontal direction. The oversampling factor in the vertical direction can be a DFT basis vector, an eigenvector, or a Discrete Cosine Transform (DCT) basis vector, etc. This application does not impose any restrictions on this.

[0051] (2) The terminal can report the PMI (including basis vector and combining factor) 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 number of second antenna ports. In some embodiments, such as... Figure 2 As shown, assuming the first antenna has 128 ports and the second antenna has 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. Figure 3As shown, if the DFT vector resolutions corresponding to the various port assumptions are different, the main lobe direction of the second antenna port number determined by the network side will deviate somewhat from that of the first antenna port number. Optionally, the basis vectors of the high ports can be derived from the basis vectors of the low ports, or the basis vectors of the low ports can be derived from the SD basis vectors of the high ports.

[0052] (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 number of second antenna ports. 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 application, the information reported at one time can include the PMI corresponding to the first antenna port and 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 a 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 application does not impose any restrictions on this.

[0053] 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.

[0054] In some embodiments, determining 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 equipment, 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; Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0055] 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.

[0056] 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 corresponding to the first antenna port information and / or the second antenna port information. and number of vertical ports Alternatively, the total number of antenna ports can be configured, with the terminal determining the horizontal and vertical port allocation. When the parameters corresponding to the codebook configured on the network side are... =8, When the value is 8, it implies that the antenna array has 8 ports horizontally and 8 ports vertically, resulting in a total of 128 ports in the cross-polarization case. When the network side configures the terminal to report for port 32, the terminal can... =4, =4 can be used for reporting, or it can be based on =8, =2 can be reported, and can also be based on =2, =8 reporting is required, 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 information corresponding to the first antenna port and / or the second antenna port by measuring resource-related configurations. To reduce signaling overhead, a port indication method based on antenna groups can be considered. For example, in the case of 128 ports, each group of 4 ports is divided into 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 using bit mapping. For another example, if the network side divides 8 ports into groups, 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 using bit mapping; or it can use 64 bits to indicate the first antenna port information and / or the second antenna port information using bit mapping.

[0057] Optionally, the terminal can 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 based on predefined rules. , The value and / or SD basis vector length determine the first antenna port information and / or the second antenna port information.

[0058] 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 the 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 the 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).

[0059] 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.

[0060] 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.

[0061] In some embodiments, the reporting requirement includes at least one of the following: The target indicator is greater than the first threshold; The target indicator is less than the second threshold; The target indicator is greater than the first threshold and less than the second threshold.

[0062] 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.

[0063] 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: 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.

[0064] Specifically, in this embodiment, 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 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.

[0065] Optionally, in the first codebook, one polarization direction corresponds to K SD basis vector sets, or regardless of polarization direction, all antenna ports correspond to K SD basis vector sets. The length of each SD basis vector is less than... * For example, the length of the basis vector is * / K, or 2 * / 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 a single polarization direction, or all antenna ports can be grouped jointly 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; no specific limitations are imposed in this embodiment.

[0066] 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. =8, Taking a 4-port codebook as an example, in a non-blocked 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 a blocked 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 a 128-port codebook 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).

[0067] 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.

[0068] For example, the second codebook structure is as follows: 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 , and This is the matrix corresponding to multiple SD basis vectors for each polarization direction. We can let... It contains SD basis vectors of length 16; It contains SD basis vectors of length 32. Assume... =8, =8, in the precoded codeword and All dimensions are *K, where K is the number of SD basis vectors. For example , .exist All basis vectors in ( All values ​​do not contain zero, and the length of the DFT vector is [value missing]. ;exist All basis vectors in ( All of them contain zero values. The length of the median vector is still However, the length of the non-zero value is / 2 or / 4, the rest are zero values, that is, the corresponding length is / 2 or A DFT vector of 4 / 4. Thus, the terminal selects different port hypothesis numbers by choosing different precoding codewords.

[0069] Second codebook structure two: , While multiple vectors in the vector representation have the same length, 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.

[0070] Second codebook structure three: , The lengths of multiple DFT vectors are also different; for example It 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, , , , It is a DFT vector of length 64. It is a DFT vector of length 32.

[0071] 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 values ​​for measurement and reporting, or CSI-RS resources with better L1-RSRP or L1-SINR values ​​for measurement and reporting, or CSI-RS resources that meet CQI requirements for measurement and reporting. Optionally, the terminal can also perform PMI / CQI measurement and reporting on 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.

[0072] 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.

[0073] 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: 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 group according to predefined rules; The terminal determines the length of the basis vectors or the basis vector group.

[0074] 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.

[0075] For example, the length or number of SD basis vectors in the first codebook is configured by higher-layer signaling. The network side configures the length of the SD basis vectors to be... =8, =8 indicates that the length of the SD basis vectors in both the horizontal and vertical directions is 8; or the length of the SD basis vectors can also be represented by other parameters, such as M1 and M2, and the parameters... and It is still used to indicate the number of antenna ports in the horizontal and vertical directions. Alternatively, it can be used in configuration parameters. and In this case, the network side additionally configures the number of SD basis vector groups, such as 2 groups of horizontal SD basis vectors, 4 groups of vertical SD basis vectors, or a total of 4 groups of SD basis vectors. The terminal can determine the SD basis vectors based on the N1 and N2 values ​​configured by the network side, and / or the SD basis vector length or number of groups configured by the network side.

[0076] 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 the 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.

[0077] 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.

[0078] In some embodiments, the information reporting 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, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0079] 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.

[0080] 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: 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] For example, the method for terminal feedback of CQI is at least one of the following: 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. 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.

[0085] 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.

[0086] 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.

[0087] For example, such as Figure 4 As shown in the embodiments of this application, an information reporting method is also provided, applied to a network-side device, including: 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.

[0088] 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.

[0089] 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.

[0090] For example, in some embodiments, the target parameters corresponding to the second antenna port information reported by the terminal to the network side include four port assumptions. and The network-side device determines the second antenna port information based on predefined rules. and Values ​​and information of the first antenna port and The values ​​are equal, or the number of second-line ports is equal. and The value is the number of the first antenna ports. and By using a value that is twice or half the value, the terminal can determine the PMI corresponding to the SD basis vector set and the second antenna port information. Optionally, the terminal can report the high-port PMI and the target parameters of the low-port 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 the target parameters of the high-port to the network-side device, and the network side determines the high-port PMI based on the information reported by the terminal. Optionally, the high port may be such as port 64 or port 128, and the low port may be such as port 8 or port 16.

[0091] 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.

[0092] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0093] Specifically, in this embodiment, 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.

[0094] 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: 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.

[0095] Specifically, in this embodiment, 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.

[0096] For example, the network side can configure the number of horizontal ports for the terminal. and number of vertical ports Alternatively, the total number of antenna ports can be configured; or the network side can configure port styles for the terminal in the form of antenna port groups.

[0097] 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.

[0098] In some embodiments, the information reporting method further includes: The first information reported by the receiving terminal; the first information includes at least one of the following: 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.

[0099] Specifically, in this embodiment, 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 more energy-efficient or which port can meet the channel quality requirements.

[0100] The information reporting device provided in this application is described below. The information reporting device described below corresponds to the information reporting method described above. The information reporting device in the embodiments of this application is as follows: Figure 5 As shown, it is applied to the terminal and includes: The determining unit 510 is used to determine the first antenna port information and / or the second antenna port information; 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.

[0101] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0102] In some embodiments, the determining unit 510 is specifically used for: Based on the configuration information of the network-side equipment, 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; Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0103] In some embodiments, the reporting requirement includes at least one of the following: The target indicator is greater than the first threshold; The target indicator is less than the second threshold; The target indicator is greater than the first threshold and less than the second threshold.

[0104] In some embodiments, the reporting unit 520 is specifically used for: 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.

[0105] In some embodiments, the determining unit 510 is further configured to: The base vector length or base vector group is determined based on the configuration information of the network-side devices; Determine the basis vector length or basis vector group according to predefined rules; The terminal determines the length of the basis vectors or the basis vector group.

[0106] In some embodiments, the reporting unit 520 is further configured to: Report first information to the network-side device; the first information includes at least one of the following: 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.

[0107] For example, this application also provides an information reporting device, such as... Figure 6 As shown, it is applied to network-side devices, including: 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. 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.

[0108] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0109] In some embodiments, the information reporting device further includes a sending unit, specifically used for: 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.

[0110] In some embodiments, the receiving unit 610 is further configured to: The first information reported by the receiving terminal; the first information includes at least one of the following: 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.

[0111] It should be noted that the division of units in the embodiments of this application 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 application 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.

[0112] 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 application, 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 application. 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.

[0113] Figure 7 An example of a terminal structure diagram is provided, which includes a memory 720, a transceiver 710, a processor 700, and a user interface 730; wherein the processor 700 and the memory 720 may also be physically arranged separately.

[0114] 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.

[0115] Specifically, the transceiver 710 is used to receive and send data under the control of the processor 700.

[0116] Among them, Figure 7In this application, the bus architecture can 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 together. The bus architecture can 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. The bus interface provides an interface. The transceiver 710 can be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. Processor 700 is responsible for managing the bus architecture and general processing, and memory 720 can store data used by processor 700 during operation.

[0117] 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.

[0118] The processor 700 calls a computer program stored in the memory 720 to execute any of the methods provided in the embodiments of this application according to the obtained executable instructions, such as: determining the first antenna port information and / or the 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.

[0119] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0120] In some embodiments, determining 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 equipment, 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; Based on the reported requirements, determine the first antenna port information and / or the second antenna port information.

[0121] In some embodiments, the reporting requirement includes at least one of the following: The target indicator is greater than the first threshold; the target indicator is used to indicate channel quality or energy efficiency. The target indicator is less than the second threshold; The target indicator is greater than the first threshold and less than the second threshold.

[0122] In some embodiments, 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 and a second codebook; the first codebook includes multiple base vector groups; the second codebook contains base vectors of various lengths.

[0123] 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: 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 group according to predefined rules; The terminal determines the length of the basis vectors or the basis vector group.

[0124] In some embodiments, 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, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

[0125] It should be noted that the terminal provided in this application 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. Here, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail.

[0126] 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 application, 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 in the various embodiments of this application. 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.

[0127] Figure 8 An example of a physical structure diagram of a network-side device is provided, including a memory 820, a transceiver 810, and a processor 800; wherein the processor 800 and the memory 820 may also be physically arranged separately.

[0128] 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.

[0129] Specifically, the transceiver 810 is used to receive and send data under the control of the processor 800.

[0130] Among them, Figure 8 In this application, the bus architecture can 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 together. The bus architecture can 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. The bus interface provides an interface. The transceiver 810 can be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. Processor 800 is responsible for managing the bus architecture and general processing, and memory 820 can store data used by processor 800 during operation.

[0131] The processor 800 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0132] The processor 800 calls the computer program stored in the memory 820 to execute any of the methods provided in the embodiments of this application 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; 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.

[0133] In some embodiments, the target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

[0134] 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: 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.

[0135] In some embodiments, the method further includes: The first information reported by the receiving terminal; the first information includes at least one of the following: 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.

[0136] It should be noted that the network-side device provided in this application embodiment can implement all the method steps implemented by the embodiments in which 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.

[0137] 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.

[0138] Specifically, the computer program product provided in this application embodiment can implement all the method steps implemented in the above method embodiments 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.

[0139] 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.

[0140] The non-transiently readable storage medium provided in this application embodiment 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.

[0141] 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.

[0142] The processor-readable storage medium provided in this application embodiment 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.

[0143] 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 (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical memory (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (such as ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0144] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0145] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0146] These processor-executable instructions may also be stored in a processor-readable memory that can direct 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, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0147] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0148] It should also be noted that the terms "first," "second," etc., used in the embodiments of this application 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 application 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.

[0149] In the embodiments of this application, the term "and / or" describes the relationship between associated 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 associated objects have an "or" relationship.

[0150] In this application, "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," "determining C based on A, and further determining B based on C," etc. It can also 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.

[0151] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0152] The technical solutions provided in this application 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 the Evolved Packet Core (EPC), 5G core network (5GC), and 6G core network (6GC).

[0153] The terminal involved in the embodiments of this application can be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem. The name of the terminal may differ in different systems; for example, in a 5G system, the terminal can be called a User Equipment (UE). The wireless terminal can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges 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 this application does not limit the terminology.

[0154] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal via one or more sectors on the air interface, or other names. The network device can 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, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in 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 the embodiments of this application. 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 also be geographically separated.

[0155] 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.

[0156] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An information reporting method, applied to a terminal, characterized in that, include: 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 according to claim 1, characterized in that, The target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

3. The information reporting method according to claim 1, characterized in that, 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; Based on the reported requirements, determine the information of the first antenna port and / or the second antenna port.

4. The information reporting method according to claim 3, characterized in that, The reported requirements include at least one of the following: The target indicator is greater than the first threshold; The target indicator is less than the second threshold; The target indicator is greater than the first threshold and less than the second threshold.

5. The information reporting method according to claim 4, characterized in that, 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 and a second codebook. The first codebook includes multiple base vector groups. The second codebook contains base vectors of various lengths.

6. The information reporting method according to claim 5, characterized in that, 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 group according to predefined rules; The terminal determines the length of the basis vectors or the basis vector group.

7. The information reporting method according to any one of claims 1 to 6, characterized in that, 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, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

8. An information reporting method, characterized in that, include: 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 according to claim 8, characterized in that, The target parameters corresponding to the second antenna port information include at least one of the following: Basis vectors and merging factors.

10. The information reporting method according to claim 8, characterized in that, 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, characterized in that, 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, ratio of port number to CQI, ratio of CQI to port number, and antenna port information that meets reporting requirements.

12. A terminal, characterized in that, Includes memory, transceiver, and 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, characterized in that, Includes memory, transceiver, and 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 8 to 11.

14. An information reporting device, characterized in that, include: 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, characterized in that, include: 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, characterized in that, The processor-readable storage medium stores a computer program that causes the processor to perform the method according to any one of claims 1 to 7, or the method according to any one of claims 8 to 11.

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