Measurement reporting method and apparatus, terminal, and network-side device

Abstract

The present disclosure provides a measurement reporting method and apparatus, a terminal, and a network-side device. The method comprises: a terminal measures measurement resources to obtain channel state information (CSI); and the terminal sends the CSI to a network-side device, wherein the CSI comprises at least one first basis vector parameter, the first basis vector parameter is used for determining a precoding codeword corresponding to a first antenna group parameter, the first basis vector parameter is determined by a measurement resource corresponding to the first antenna group parameter, or by measurement resources corresponding to antenna group parameters other than the first antenna group parameter, and the terminal comprises at least two antenna group parameters.

Description

Measurement and reporting methods, devices, terminals, and network-side equipment

[0001] This disclosure claims priority to Chinese Patent Application No. 202510064800.8, filed with the Chinese Patent Office on January 15, 2025, entitled "Measuring and Reporting Method, Apparatus, Terminal and Network-Side Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a measurement reporting method, apparatus, terminal and network-side equipment. Background Technology

[0003] In traditional systems, when receiving data via the Physical Downlink Shared Channel (PDSCH), the terminal performs joint Multiple-Input Multiple-Output (MIMO) detection and demodulation on all data streams. As the number of data streams increases, the complexity of MIMO detection also increases. To reduce MIMO detection complexity, the terminal can employ a low-complexity reception method, using multiple sub-receivers to perform MIMO detection and demodulation independently. However, if there is excessive interference between the signals transmitted by the network-side equipment to the multiple sub-receivers, it may cause performance degradation for the low-complexity receivers. Summary of the Invention

[0004] The purpose of this disclosure is to provide a measurement reporting method, apparatus, terminal, and network-side equipment that solves the problem of performance loss of low-complexity receivers caused by excessive signal interference.

[0005] Embodiments of this disclosure provide a measurement reporting method, including:

[0006] The terminal measures the measurement resources to obtain Channel State Information (CSI);

[0007] The terminal sends the CSI to the network-side device;

[0008] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter; the first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

[0009] Embodiments of this disclosure provide a measurement reporting method, including:

[0010] Network-side equipment receives CSI sent by the terminal;

[0011] The network-side device preprocesses the data to be transmitted according to the CSI.

[0012] The network-side device sends the preprocessed data;

[0013] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal includes at least two antenna group parameters.

[0014] Embodiments of this disclosure provide a terminal, including: a memory, a transceiver, and a processor.

[0015] A memory for storing computer programs; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0016] The measurement resources are measured to obtain Channel State Information (CSI).

[0017] Send the CSI to the network-side device;

[0018] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter; the first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

[0019] Embodiments of this disclosure provide a network-side device, including: a memory, a transceiver, and a processor.

[0020] A memory for storing computer programs; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0021] Receive CSI sent by the terminal;

[0022] Preprocess the data to be transmitted according to the CSI;

[0023] Send the preprocessed data;

[0024] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal includes at least two antenna group parameters.

[0025] Embodiments of this disclosure provide a measurement reporting device, comprising:

[0026] The measurement unit is used to measure measurement resources and obtain channel state information (CSI).

[0027] The first transmitting unit is used to transmit the CSI to the network-side device;

[0028] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter; the first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

[0029] Embodiments of this disclosure provide a measurement reporting device, comprising:

[0030] The first receiving unit is used to receive CSI sent by the terminal;

[0031] The first processing unit is used to preprocess the data to be transmitted according to the CSI;

[0032] The second sending unit is used to send the preprocessed data;

[0033] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal includes at least two antenna group parameters.

[0034] Embodiments of this disclosure provide a processor-readable storage medium storing a program for causing the processor to execute the measurement reporting method described above.

[0035] The beneficial effects of the above-mentioned technical solution disclosed herein are:

[0036] In embodiments of this disclosure, the terminal determines the first basis vector parameter corresponding to the first antenna group parameter based on the measurement resources corresponding to the first antenna group parameter, or the terminal determines the first basis vector parameter corresponding to the first antenna group parameter based on the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The first basis vector parameter is used to determine the precoding codeword of the first antenna group parameter. In this way, the network-side device can use the precoding codeword to preprocess the data to be transmitted, which can reduce or eliminate the interference between the signal corresponding to the first antenna group parameter and the signal corresponding to other antenna group parameters, thereby reducing the performance loss of signal detection and demodulation. Attached Figure Description

[0037] Figure 1 shows one of the flowcharts of the measurement reporting method according to an embodiment of the present disclosure;

[0038] Figure 2 illustrates one of the methods for determining the precoding matrix indicator (PMI) according to an embodiment of this disclosure;

[0039] Figure 3 illustrates a second schematic diagram of the method for determining PMI according to an embodiment of this disclosure;

[0040] Figure 4 illustrates the third of the methods for determining PMI according to an embodiment of this disclosure;

[0041] Figure 5 illustrates the fourth schematic diagram of the method for determining PMI according to an embodiment of this disclosure;

[0042] Figure 6 illustrates the fifth of the methods for determining PMI according to embodiments of this disclosure;

[0043] Figure 7 shows a second schematic flowchart of the measurement reporting method according to an embodiment of this disclosure;

[0044] Figure 8 shows a schematic diagram of one of the measurement reporting devices according to an embodiment of the present disclosure;

[0045] Figure 9 shows a second schematic diagram of the structure of the measurement reporting device according to an embodiment of this disclosure;

[0046] Figure 10 shows a schematic diagram of the structure of a terminal according to an embodiment of this disclosure;

[0047] Figure 11 shows a schematic diagram of the structure of a network-side device according to an embodiment of the present disclosure. Detailed Implementation

[0048] To make the technical problems, solutions, and advantages of this disclosure clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this disclosure. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0049] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a particular feature, structure, or characteristic relating to an embodiment is included in at least one embodiment of this disclosure. Therefore, "in one embodiment" or "one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0050] In the various embodiments of this disclosure, it should be understood that the sequence number of each process described below does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure.

[0051] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0053] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0054] The embodiments of this disclosure provide a measurement reporting method, apparatus, terminal, and network-side equipment to solve the problem of performance loss of low-complexity receivers caused by excessive signal interference.

[0055] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0056] As shown in Figure 1, an embodiment of this disclosure provides a measurement reporting method applied to a terminal, specifically including the following steps:

[0057] Step 101: The terminal measures the measurement resources and obtains Channel State Information (CSI).

[0058] Step 102: The terminal sends the CSI to the network-side device;

[0059] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter; the first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

[0060] In this embodiment, the measurement resources can be configured or pre-configured by network-side devices, or determined by the terminal according to predefined rules. The CSI includes at least one first basis vector parameter, which can be considered a precoding indicator (PMI) parameter. The CSI may also include one or more other PMI parameters (such as a second basis vector parameter, a combining factor, etc.), a rank indicator (RI), a channel quality indicator (CQI), etc. It should be noted that the first basis vector parameter in this embodiment belongs to the PMI parameter category, and the PMI parameter may further include one or more parameters such as a second basis vector parameter and a combining factor.

[0061] The antenna group parameters are the relevant parameters of the transmitted signal corresponding to a certain antenna group. They can also be understood as the relevant parameters of the transmitted signal corresponding to a certain sub-receiver of the terminal, such as capability index value, Detection Reference Signal (SRS) group index, number of SRS ports, SRS port index, etc., or one or more of these. The antenna group parameters correspond to the sub-receivers of the terminal; they can be understood as representing the sub-receivers of the terminal. For example, if a terminal has 8 receiving antennas, and every 4 receiving antennas are grouped together, with each group capable of performing up to 4 MIMO detections, each group can be considered as corresponding to a sub-receiver used independently for MIMO detection and demodulation. Therefore, each antenna group parameter corresponds to one sub-receiver.

[0062] In some embodiments, the function of the first basis vector parameter is: the network-side device eliminates interference between receivers corresponding to the antenna group parameters based on the first basis vector parameter, or the network-side device precodes the data to be sent to the receiver corresponding to the first antenna group parameter based on the first basis vector parameter, thereby eliminating or reducing interference between the receiver corresponding to the first antenna group parameter and receivers corresponding to other antenna group parameters, or the network-side device precodes the data to be sent to the receiver corresponding to the first antenna group parameter based on the first basis vector parameter, thereby eliminating or reducing interference leaked from the receiver corresponding to the first antenna group parameter to receivers corresponding to other antenna group parameters.

[0063] The terminal measures measurement resources to obtain the CSI corresponding to one or more antenna group parameters, which can also be understood as obtaining the CSI corresponding to one or more sub-receivers. The CSI includes a first base vector parameter. The network-side device can determine the precoding codeword for the first antenna group parameter corresponding to the first base vector parameter based on the first base vector parameter, thereby using the precoding codeword to pre-encode the data to be transmitted, pre-eliminating or reducing interference to other receivers. The first base vector parameter can be obtained by the terminal measuring the measurement resources corresponding to the first antenna group parameter, or it can be obtained by the terminal measuring the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter.

[0064] In some embodiments, the measurement resources may include channel measurement resources and / or interference measurement resources corresponding to antenna group parameters. For example, the network-side device configures first channel measurement resources and / or first interference measurement resources for first antenna group parameters, and the network-side device also configures second channel measurement resources and / or second interference measurement resources for other antenna group parameters. The first channel measurement resource and the second channel measurement resource may be the same or different, and the first interference measurement resource and the second interference measurement resource may be the same or different. The interference measurement resource corresponding to a certain antenna group parameter may also be the channel measurement resource of other antenna group parameters. For example, the second channel measurement resource is also considered to be the interference measurement resource of the first antenna group parameter.

[0065] The terminal can obtain the first basis vector parameters based on the measurement resources of the first antenna group parameters. For example, the terminal determines the first basis vector parameters and other precoding parameters (such as the second basis vector parameters, combining factor, etc.) based on the channel measurement resources and dedicated interference measurement resources of the first antenna group parameters. The terminal can also determine the precoding matrix corresponding to the first antenna group parameters based on its own channel measurement resources and the measurement resources of other antenna group parameters. For example, the terminal determines the first basis vector parameters based on the channel measurement resources of other antenna group parameters. In this case, the channel measurement resources of the other antenna group parameters can be used as the channel measurement resources or interference measurement resources of the first antenna group parameters. Furthermore, the terminal can also determine other precoding parameters based on its own channel measurement resources.

[0066] In some embodiments, the first basis vector parameter is orthogonal to the channel information corresponding to the interference measurement resources that serve as parameters of the first antenna group. This way, when the precoding codeword determined based on the first basis vector parameter is applied to the first antenna group parameters, interference to the signal transmission corresponding to other antenna group parameters can be avoided. For example, a terminal includes two sub-receivers: sub-receiver 1 corresponds to the first antenna group parameters, and sub-receiver 2 corresponds to the second antenna group parameters. The network-side device configures the first channel measurement resources and the first interference measurement resources of sub-receiver 1, and configures the second channel measurement resources and the second interference measurement resources of sub-receiver 2. The terminal uses sub-receiver 1 to measure the first channel measurement resources and the first interference measurement resources to determine the first basis vector parameter and other precoding parameters (such as the second basis vector parameter, combining factor, etc.). For example, the terminal can first determine a subset of candidate precoding codewords based on the channel information obtained from measuring the first channel measurement resources, and then select the precoding codeword that is as orthogonal as possible to the channel information obtained from measuring the first interference measurement resources as the final first basis vector parameter.

[0067] Alternatively, the terminal uses sub-receiver 1 to measure the first channel measurement resources and sub-receiver 2 to measure the second channel measurement resources corresponding to sub-receiver 1, thereby determining the first basis vector parameters and other precoding parameters (such as the second basis vector parameters, combining factor, etc.). In this case, the second channel measurement resources can be used as the interference measurement resources of sub-receiver 1. For example, the terminal can first determine some candidate precoding codewords based on the channel information obtained by measuring the first channel measurement resources, and then select the precoding codewords that are as orthogonal as possible to the channel information obtained by measuring the second channel measurement resources as the final first basis vector parameters.

[0068] Alternatively, the terminal uses sub-receiver 1 to measure the first channel measurement resources and sub-receiver 2 to measure the second channel measurement resources. Based on the measurement results, it determines the first basis vector parameters and other precoding parameters (such as the second basis vector parameters, combining factor, etc.). In this case, the second channel measurement resources can be used as the interference measurement resources of sub-receiver 1. For example, the terminal can first determine some candidate precoding codewords based on the channel information obtained from measuring the first channel measurement resources, and then select the precoding codewords that are as orthogonal as possible to the channel information obtained from measuring the second channel measurement resources as the final first basis vector parameters.

[0069] Because the precoding codewords for the first antenna group parameters fed back by the terminal to the network-side device are orthogonal to the channel information of the interference measurement resources for the first antenna group parameters or the channel measurement resources corresponding to other antenna group parameters, the network-side device uses these precoding codewords to process (precode) the data sent to the sub-receiver corresponding to the first antenna group parameters, thereby eliminating interference between the sub-receiver corresponding to the first antenna group parameters and other sub-receivers. The CSI can include the first basis vector parameters corresponding to each antenna group parameter. Thus, by precoding the data to be transmitted using the precoding codewords corresponding to each antenna group parameter, the network-side device can ensure that each sub-receiver only receives the useful signal sent to it by the network-side device, while the received interference (i.e., the signal sent by the network-side device to other sub-receivers) remains at a low level.

[0070] In embodiments of this disclosure, the terminal determines the first basis vector parameter corresponding to the first antenna group parameter based on the measurement resources corresponding to the first antenna group parameter, or the terminal determines the first basis vector parameter corresponding to the first antenna group parameter based on the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The first basis vector parameter is used to determine the precoding codeword of the first antenna group parameter. In this way, the network-side device can use the precoding codeword to preprocess the data to be transmitted, which can reduce or eliminate the interference between the signal corresponding to the first antenna group parameter and the signal corresponding to other antenna group parameters, thereby reducing the performance loss of signal detection and demodulation.

[0071] As an optional embodiment, the first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including:

[0072] The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

[0073] In this embodiment, the first basis vector parameter can be determined by the interference measurement resource corresponding to the first antenna group parameter. The interference measurement resource can be the interference measurement resource dedicated to the first antenna group parameter configured by the network side device, or it can be the interference measurement resource determined by the terminal according to predefined rules. For example, the terminal determines that the channel measurement resource corresponding to the second antenna group parameter is the interference measurement resource corresponding to the first antenna group parameter according to predefined rules.

[0074] The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameters. This can be understood as the terminal determining the first basis vector parameter based on the channel measurement resources and interference measurement resources corresponding to the first antenna group parameters, or it can be understood as the terminal determining the first basis vector parameter based on the interference measurement resources corresponding to the first antenna group parameters. In some embodiments, the determination of the first basis vector parameter by the measurement resources corresponding to the first antenna group parameters can also be understood as: the first basis vector parameter is orthogonal or nearly orthogonal to the channel information of the interference measurement resources corresponding to the first antenna group parameters, or the multiplication of the first basis vector parameter with the channel information of the interference measurement resources corresponding to the first antenna group parameters results in a smaller L2 norm. For example, when determining the first basis vector parameter, the terminal can choose a precoding codeword orthogonal to the channel information of the interference measurement resources corresponding to the first antenna group parameters as the first basis vector parameter, or the terminal can choose a precoding codeword with the smallest L2 norm after multiplying with the channel information of the interference measurement resources corresponding to the first antenna group parameters as the first basis vector parameter.

[0075] As an optional embodiment, the first basis vector parameters are determined by measurement resources corresponding to other antenna group parameters besides the first antenna group parameters, including:

[0076] The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

[0077] In this embodiment, the first basis vector parameter can be determined by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal can also determine the interference measurement resources based on predefined rules, thereby determining the first basis vector parameter. For example, if the network-side device configures channel measurement resources for sub-receiver 1 and sub-receiver 2 respectively, when determining the first basis vector parameter of sub-receiver 1, the channel measurement resources of sub-receiver 2 can be used. For instance, a precoding codeword orthogonal to the channel information of the channel measurement resources of sub-receiver 2 can be selected as the first basis vector parameter of sub-receiver 1.

[0078] In some embodiments, the channel measurement resources corresponding to antenna group parameters other than the first antenna group parameters can also be the interference measurement resources corresponding to the other antenna group parameters, and the interference measurement resources corresponding to the other antenna group parameters are used as the interference measurement resources corresponding to the first antenna group parameters. For example, if the network-side device configures channel measurement resources for sub-receiver 1 and interference measurement resources for sub-receiver 2, when determining the first basis vector parameters of sub-receiver 1, the interference measurement resources of sub-receiver 2 can be used to determine them. For example, a precoding codeword orthogonal to the channel information of the interference measurement resources of sub-receiver 2 can be selected as the first basis vector parameters of sub-receiver 1.

[0079] In some embodiments, the length of the first basis vector parameter is related to the number of ports of the measurement resource, and the length of the first basis vector parameter is configured by the network-side device.

[0080] In this embodiment, the length of the first basis vector parameter determined by the terminal corresponds to the number of ports of the measurement resource. For example, the length of the first basis vector parameter is N. t or N t / 2,N t This refers to the number of transmitting antennas, which can also be understood as the number of ports for measuring resources. The length is N. t This indicates that the terminal jointly determines the basis vectors for all antenna ports on the network side, with a length of N. t / 2 indicates that the terminal determines the basis vector for an antenna with a polarization direction on the network side.

[0081] As an optional embodiment, the CSI further includes at least one of the following:

[0082] The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter;

[0083] The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

[0084] In this embodiment, after obtaining the first basis vector parameters, the terminal can further determine the second basis vector parameters and / or the merging factor based on the first basis vector parameters and the measurement resources corresponding to the first antenna group parameters. The second basis vector parameters and / or the merging factor can be used to improve network performance. For example, the terminal can further determine the spatial domain (SD) basis vector in the second basis vector parameters based on the channel information of the measurement resources corresponding to the first antenna group parameters and the first basis vector parameters. The terminal reports the second basis vector parameters and / or the merging factor to the network side.

[0085] As an optional embodiment, sending the CSI to the network-side device includes:

[0086] The second basis vector parameter is reported using a parameter index, and the first basis vector parameter is reported using one or two parameter indices.

[0087] In this embodiment, the first basis vector parameter corresponds to one or two parameter indices, such as using parameter i. 1,1 and i 1,2 This is used to provide feedback on the first basis vector parameter; the second basis vector parameter corresponds to a parameter index, such as using parameter i. 1,1 This is used to provide feedback on the second basis vector parameter. For example, the first basis vector parameter includes horizontal and vertical dimensions, while the second basis vector parameter does not distinguish between horizontal and vertical dimensions. For example, the matrix dimension of the first basis vector parameter is N. t ×N r2 N t N is the number of antennas (or ports) at the transmitting end. r2 This refers to the number of antennas (or ports) of the receiver corresponding to the antenna group parameters. The matrix dimension of the second basis vector parameters is N. u ×T,N u N represents the length of the SD basis vectors in the second basis vector parameters. u Configured by higher-level parameters, T is the number of SD basis vectors in the second basis vector parameter, T≥1.

[0088] As an optional embodiment, the length corresponding to the second basis vector parameter is less than the number of ports of the measurement resource, or the length corresponding to the second basis vector parameter is less than the length corresponding to the first basis vector parameter; the length corresponding to the second basis vector parameter is configured by the network-side device.

[0089] In this embodiment, the length of the second basis vector parameter is less than the number of ports of the measurement resource. The length of the first basis vector parameter is related to the number of ports of the measurement resource, and the length of the second basis vector parameter can be less than the length of the first basis vector parameter. The lengths of the first and second basis vector parameters can be configured to the terminal by higher-layer parameters.

[0090] As an optional embodiment, each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters;

[0091] The step of measuring the measurement resources to obtain Channel State Information (CSI) includes: measuring the measurement resources according to the antenna group parameters associated with the measurement resources to obtain the CSI corresponding to the antenna group parameters.

[0092] In this embodiment, each measurement resource is associated with one or more antenna group parameters to determine the CSI. The CSI may include one or more information such as PMI, RI, and CQI. The first basis vector parameter, the second basis vector parameter, the merging factor, etc., can be considered as the PMI. The PMI may be the PMI corresponding to each antenna group parameter individually, or a joint PMI corresponding to all antenna group parameters.

[0093] The terminal performs measurements and reports based on the measurement resources corresponding to the antenna group parameters. When obtaining the PMI by measuring the measurement resources, the terminal can perform measurements based on the correlation between the antenna group parameters and the measurement resources. The obtained PMI is the PMI corresponding to the antenna group parameters. The terminal can feed back the PMI separately for each measurement resource corresponding to each antenna group parameter.

[0094] In some embodiments, the CSI is the CSI corresponding to each antenna group parameter, or the CSI is the CSI corresponding to all antenna group parameters.

[0095] As an optional embodiment, sending the CSI to the network-side device includes:

[0096] When each measurement resource is associated with an antenna group parameter, the CSI corresponding to each antenna group parameter is sent to the network-side device;

[0097] or,

[0098] In cases where each measurement resource is associated with at least two antenna group parameters, the CSI corresponding to at least two antenna group parameters is sent to the network-side device.

[0099] In this embodiment, each measurement resource can be associated with one or more antenna group parameters. The terminal measures the measurement resource to obtain the CSI corresponding to the associated one or more antenna group parameters. For example, each antenna group parameter has its own associated measurement resource. The terminal measures the measurement resource associated with the first antenna group parameter to obtain the PMI, which is the CSI corresponding to the first antenna group parameter. As another example, multiple antenna group parameters are associated with the same measurement resource. The terminal measures the measurement resource to obtain the PMI, which is the PMI corresponding to all the antenna group parameters.

[0100] It should be noted that in the embodiments of this disclosure, the measurement resources corresponding to multiple antenna group parameters can be the same or different. For example, when the network-side device uses different precoding matrices for weighting each sub-receiver, such as in non-PMI reporting under a Time Division Duplex (TDD) scenario, the channel measurement resources corresponding to multiple sub-receivers can be different, and therefore the precoding codewords they use are different. When the channel measurement resources are not weighted using precoding codewords, the channel measurement resources corresponding to multiple sub-receivers can be the same.

[0101] For example: The network-side device configures P (e.g., P = 1, 2, 3, etc.) CSI Reference Signal (CSI-RS) resource settings for the terminal. The first resource setting is used for channel measurement and contains N CSI-RS resource sets, each corresponding to one of the N sub-receivers. Alternatively, the first resource setting contains one CSI-RS resource set, corresponding to all the sub-receivers. Another example: The network-side device configures N CSI-RS resource settings for the terminal, with each resource setting corresponding to one sub-receiver, and each resource setting contains at least one CSI-RS resource set used for channel measurement. Yet another example: The network-side device configures P (e.g., P = 1, 2, 3, etc.) CSI-RS resource settings for the terminal, with the first resource setting used for channel measurement and containing one CSI-RS resource set. Each CSI-RS resource set contains one or N CSI-RS resources, and each CSI-RS resource corresponds to one sub-receiver.

[0102] It should be noted that the measurement resources in the embodiments of this disclosure may be measurement resources, a set of measurement resources, or a subgroup of resources.

[0103] In some embodiments, the correspondence between measurement resources and sub-receivers (which can also be understood as antenna group parameters) can be explicitly defined through predefined methods or network-side configuration. For example, the first measurement resource or measurement resource set or resource subgroup (an implicit or explicit resource subgroup composed of multiple CSI-RS resources within a CSI-RS resource set) is associated with sub-receiver 1 (i.e., associated with the first antenna group parameters), and the second measurement resource or measurement resource set or resource subgroup is associated with sub-receiver 2 (i.e., associated with the second antenna group parameters).

[0104] As an optional embodiment, the antenna group parameters include at least one of the following:

[0105] Capability index value;

[0106] Detection Reference Signal (SRS) group index;

[0107] Number of SRS ports;

[0108] SRS port index.

[0109] In this embodiment, the antenna group parameters can be one or more of the above-mentioned parameters, which can be used to indicate the sub-receiver of the terminal. Since the sub-receiver is only an application scenario, it is not explicitly defined. Instead, panel-related parameters (such as capability value indexes) in uplink transmission can be used to characterize the sub-receiver. The network-side equipment pre-configures the capability value indexes corresponding to the measurement resources, measurement resource sets, or resource subgroups, or the protocol pre-defines the correspondence between measurement resources, measurement resource sets, or resource subgroups and capability value indexes. In this way, when performing measurements, the terminal will only use the capability value indexes (which can also be understood as the corresponding sub-receiver) corresponding to the measurement resources, measurement resource sets, or resource subgroups for measurement reporting.

[0110] The terminal can also use the SRS resources or resource groups corresponding to the sub-receivers to limit the sub-receivers receiving measurement resources. For example, each measurement resource, measurement resource set, or resource subgroup corresponds to an SRS resource group (which can also be understood as corresponding to a sub-receiver). If an associated SRS resource group is explicitly configured for each measurement resource, measurement resource set, or resource subgroup, the UE will receive and measure the measurement resource, measurement resource set, or resource subgroup according to the associated SRS resource group. The SRS resource group can be represented by an SRS group index, or by the number of SRS ports or an SRS port index.

[0111] The following example illustrates the implementation method of the terminal reporting CSI information such as the first basis vector parameter, the second basis vector parameter, and the merging factor in an embodiment of this disclosure.

[0112] The first basis vector parameters fed back by the terminal to the network-side device can be used to eliminate interference between multiple sub-receivers. In embodiments of this disclosure, antenna group parameters are used to refer to sub-receivers; that is, the sub-receivers described herein can also be represented by antenna group parameters. For example, if the PMI fed back by the terminal for one sub-receiver is relatively orthogonal to the measurement resources of other sub-receivers, when the network-side device uses the precoding codewords fed back by the UE, it can ensure that each sub-receiver only receives the useful signal sent to it by the network side, while the interference it receives (i.e., the signal sent by the network side to other sub-receivers) is at a low level. In this case, when multiple sub-receivers demodulate independently, the performance loss is relatively small compared to joint demodulation by multiple sub-receivers.

[0113] Example 1: Assuming codebook design is based on Type I codebook, the codebook design method disclosed herein can utilize the concept of Block Diagonalization (BD). Taking two terminals as an example, the precoding matrix can be composed of two sub-matrices, as shown below:

[0114] Where submatrix Used to combat inter-terminal interference, it represents the eigenvectors corresponding to the zero singular values ​​of the equivalent channel of other terminals, and the submatrix W. b =V 1 Used to eliminate interference between various data streams of the terminal, providing the terminal's equivalent channel (including channel information and W). a The eigenvectors corresponding to the largest N singular values ​​of the matrix (the influence of the matrix). In the codebook design for low-complexity receivers, the idea of ​​BD can be followed, treating multiple sub-receivers as multiple terminals, and designing precoding codewords for multiple sub-receivers jointly or independently. The specific design method of the codebook is explained below.

[0115] Method 1: Each sub-receiver corresponds to a codebook, using a codebook design method with two or more sets of basis vectors.

[0116] If each sub-receiver corresponds to a codebook, meaning multiple sub-receivers independently perform CSI (or PMI) feedback, the low-feedback-overhead codebook structure for each sub-receiver is: W = W0W1W2

[0117] Wherein W0 is the first basis vector parameter described in this embodiment, used to suppress interference from other sub-receiver channels. W1 is the second basis vector parameter described in this embodiment, and W2 is the combining factor described in this embodiment. W1 and W2 are used to improve network performance.

[0118] Taking a terminal with two sub-receivers as an example, assuming the number of receiving antennas (or ports) of the two sub-receivers are N respectively. r1 and N r2 The number of transmitting antennas (which can also be understood as the number of ports) is N. t The first sub-receiver (corresponding to N) r1 The dimension of the W0 matrix corresponding to the root receiving antenna is N. t ×N r2 When the number of antennas on the network side is large—for example, the number of antennas on the network side is much larger than the total number of antennas on the scheduled terminals—the number of eigenvectors corresponding to the equivalent channel zero eigenvalues ​​of the terminals and network side devices will also be large. Therefore, the number of columns in W0 can also be greater than N. r2 .

[0119] To simplify the design, the two sub-receivers can use the same codebook structure, or the number of columns in W0 can be fixed at N. s =max(N) r1 N r2 When the number of sub-receivers is greater than 2, for example, if there are K sub-receivers, then the number of columns N of W0 is... s =max(N) r1 N r2 ,…N rK ), where N eK This represents the number of receiving antennas or ports of the Kth sub-receiver.

[0120] W0 is quantized using a DFT vector. To distinguish it from the DFT vector in the W1 matrix, this DFT vector is called the first SD basis vector. The length of the first SD basis vector is N. t or N t / 2, with a length of N t This indicates that the terminal jointly determines the basis vectors for all antenna ports of the network-side equipment, with a length of N. t / 2 indicates that the terminal determines the basis vector for an antenna with a polarization direction on the network side device.

[0121] The network-side equipment configures the number of antenna ports (N1 and N2) in the horizontal and vertical directions for the terminal, along with corresponding oversampling factors O1 and O2. In the codebook corresponding to the low-complexity receiver, these parameters configured by the network-side equipment can be used to determine the SD basis vector (first SD basis vector) of W0. Since the purpose of W0 is to eliminate interference between different sub-receivers rather than to maximize performance, the first SD basis vector does not need an excessively large oversampling factor; for O1 and O2 values, O1 = O2 = 1 is sufficient to satisfy orthogonality. Furthermore, when selecting the first SD basis vector, sub-receiver 1 (or sub-receiver 2) will choose N... s Choose a DFT vector orthogonal to the channel of sub-receiver 2 (or sub-receiver 1), for example, select the DFT vector with the minimum gain after multiplying with the channel of sub-receiver 2 (or sub-receiver 1). This can ensure that the determined W0 can eliminate or reduce interference between sub-receivers after precoding the data.

[0122] When performing CSI feedback, the terminal can use parameter i 1,1 The relevant parameters 9 (such as W0) reflecting the first SD basis vector, i 1,1 It can be wideband feedback. Each sub-receiver needs to determine the first SD basis vector based on the channel information of other sub-receivers, so multiple sub-receivers can jointly perform PMI calculation and feedback.

[0123] For W1, if W1 contains L≥1 SD basis vectors, to distinguish them from the SD basis vectors in W0, they are referred to here as the second SD basis vectors. Sub-receiver 1 (or sub-receiver 2) will use its own equivalent channel information with the network-side equipment and the determined W0 to further determine the second SD basis vectors in W1. Furthermore, the second SD basis vectors in W1 have a different dimension than the antenna array and there is no explicit correspondence. Therefore, in the design of the second SD basis vectors in W1, it is possible to disregard the horizontal and vertical directions. For example, if the dimension of W1 is N... u ×T,N u N is the length of the second SD basis vector. u Configured by high-level parameters, without further distinction between horizontal and vertical directions, the oversampling factor of the SD basis vectors is 0; T is the number of second SD basis vectors in W1, T≥1. One or more data streams correspond to one SD basis vector, or one data stream corresponds to multiple SD basis vectors.

[0124] The design philosophy of W2 is similar to that of W1, such as including beam selection and / or phase merging factors.

[0125] When performing CSI feedback, it can be done through parameter i 1,2 The relevant parameters (such as W1) reflecting the second SD basis vector, i 1,2 It can be broadband feedback. The parameter i2 can reflect the relevant parameters of the merging factor (such as W2), and i2 can be sub-band feedback.

[0126] The codebook design method described above can also be applied to N. u When the numerical value (or rank) is greater than 2 or 4, the W1 matrix is ​​constructed using the DFT vector. When N u When the numerical value (or rank number) is small, such as 2 or 4, codebook feedback can be performed using the second method below.

[0127] Method 2: Each sub-receiver corresponds to a codebook, using a codebook design method with one or a set of basis vectors.

[0128] In this method, the codebook structure corresponding to each sub-receiver is as follows:

[0129] W = W0W2

[0130] The design method for W0 is the same as that for W0 in Method 1, and will not be repeated here. Since one or a set of basis vectors are used, the codebook structure does not include the second basis vector parameter W1.

[0131] W2 can be designed without using DFT-based 4-antenna or 2-antenna codebook methods. By adopting a codebook structure based on W0, network-side devices can eliminate or reduce interference between sub-receivers, and the matrix dimension can be reduced to a lower dimension. For example, if each sub-receiver supports at most 2 or 4 streams of data transmission, W2 can use 2-antenna or 4-antenna codebooks for transmission. When both the number of ports and data streams are small, codebooks with lower complexity can be used for transmission. The 2-antenna and 4-antenna codebooks are shown in Tables 1 and 2 below, where Table 2... I is a 4x4 identity matrix. W2 can also use other codebook structures that are not based on DFT basis vectors, in addition to those in Tables 1 and 2, which are not limited here.

[0132] Table 1: 2-Antenna Codebook Design

[0133] Table 2: 4-Antenna Codebook Design

[0134] In this second method, W2 can use a 2-antenna or 4-antenna codebook for transmission, which simplifies the codebook structure and further reduces the processing complexity of the terminal.

[0135] Method 3: Multiple sub-receivers jointly correspond to one codebook, using a codebook design method with two or two sets of basis vectors.

[0136] If the two sub-receivers use the same codebook for feedback reporting, the overall codebook structure can be represented as: W = (W 01 W 11 W 21 W 02 W 12 W 22 )

[0137] Among them, W 01 W 11 W 21 Corresponding to the first sub-receiver, W 02 W 12 W 22 This corresponds to the second sub-receiver. The two sub-receivers correspond to several layers of the precoded codewords, and the codebook structure of each sub-receiver is the same as that of Method 1, so it will not be described in detail here.

[0138] When the number of receivers is greater than 2, the codebook construction method is similar and can be represented as: W = (W 01 W 11 W 21 … W 0K W 1K W 2K )

[0139] Under this joint codebook structure, the terminal can perform PMI feedback for two sub-receivers jointly, avoiding the need to maintain multiple codebooks.

[0140] Method 4: Multiple sub-receivers jointly correspond to one codebook, using a codebook design method with one or a set of basis vectors.

[0141] If the two sub-receivers use the same codebook for feedback reporting, the overall codebook structure can be represented as: W = (W 01 W 21 W 02 W 22 )

[0142] Among them, W 01 W 21 This corresponds to the first sub-receiver. W 02 W 22 This corresponds to the second sub-receiver. Because it uses one or a set of basis vectors, this codebook design does not have W1 (i.e., W...). 11 and W 12 ).

[0143] The codebook structure for each sub-receiver is the same as in Method 2, and will not be elaborated upon here. When the number of sub-receivers is greater than 2, the codebook construction method is also similar, and can be represented as W = (W 01 W 21 … W 0K W 2K )

[0144] Method 5: Multiple sub-receivers provide feedback only to the relevant codebook of the first SD basis vector.

[0145] In some cases, the terminal may only feed back the relevant parameters of the first SD basis vector (i.e., the first basis vector parameter W0 matrix), and the precoded codewords formed by these parameters can be used to eliminate interference between sub-receivers.

[0146] When multiple sub-receivers jointly perform correlation parameter feedback for the first SD basis vector, the codebook structure can be W = (W 01 W 02 ) or W = (W 01 … W 0K For example, the terminal feeds back N to each sub-receiver. s Each of the first basis vector parameters is orthogonal to the channel of at least one sub-receiver.

[0147] After obtaining these precoded codewords, the network-side equipment can use the precoded codewords to weight (precode) the measurement resources, enabling the terminal or each sub-receiver to further perform PMI feedback based on the precoded measurement resources, and feed back precoded codewords suitable for transmission at each layer of each sub-receiver.

[0148] Example 2: When using a more refined codebook, such as a Type II related codebook, the design of the W0 matrix in the above embodiments can still be reused. Potential codebook structures for each sub-receiver include: W = W0W1W2 or... When not included When the codebook structure is the same as that of Type I codebook, the selection method for W1 and W2 is the same as that of Type II codebook; when it contains At that time, the various sub-bands can work together to provide feedback.

[0149] The design of W0 is similar to the designs in the methods mentioned above, requiring the elimination of interference between sub-receivers beforehand, which will not be elaborated here.

[0150] After the terminal design codebook is completed, measurement reporting is performed based on the codebook. The following section explains the configuration of the terminal's measurement resources and the measurement reporting process.

[0151] Assume the number of sub-receivers is N, and the number of data streams or layers fed back by the N sub-receivers are v1, v2, ... v N For this type of low-complexity receiver, the CSI measurement reporting method can be at least one of the following:

[0152] Method 1: The network-side equipment configures channel measurement resources and / or interference measurement resources for each sub-receiver. The terminal feeds back CSI for the channel measurement resources and / or interference measurement resources corresponding to each sub-receiver, such as RI (for basic transmission), PMI and CQI.

[0153] The channel measurement resources corresponding to multiple sub-receivers can be the same or different. When the network-side equipment uses different precoding matrices for weighting each sub-receiver (such as non-PMI reporting in a TDD scenario), the channel measurement resources corresponding to multiple sub-receivers can be different, and therefore they use different precoding codewords. When the channel measurement resources are not weighted using precoding codewords, the channel measurement resources corresponding to multiple sub-receivers can be the same.

[0154] For example, the network side configures P (e.g., P = 1, 2, 3, etc.) CSI-RS resource settings for the terminal. The first resource setting is used for channel measurement and contains N CSI-RS resource sets, each corresponding to one of the N sub-receivers. Alternatively, the first resource setting contains one CSI-RS resource set, corresponding to all the sub-receivers. Another example is that the network-side device configures N CSI-RS resource settings for the terminal, with each resource setting corresponding to one sub-receiver, and each resource setting having at least one CSI-RS resource set configured for channel measurement. Yet another example is that the network-side device configures P (e.g., P = 1, 2, 3, etc.) CSI-RS resource settings for the terminal, with the first resource setting used for channel measurement and containing one CSI-RS resource set. Each CSI-RS resource set contains one or N CSI-RS resources, and each CSI-RS resource corresponds to one sub-receiver.

[0155] The measurement resources disclosed herein can refer to measurement resources, sets of measurement resources, or resource subgroups (implicit or explicit resource subgroups composed of multiple CSI-RS resources within a CSI-RS resource set). The correspondence between measurement resources and sub-receivers can be explicitly defined through predefinition or network-side configuration. For example, the first measurement resource is associated with sub-receiver 1, and the second measurement resource is associated with sub-receiver 2. In some embodiments, one approach is to use panel-related parameters (such as capability indexes) in uplink transmission to characterize the sub-receiver. The capability indexes corresponding to the measurement resources are pre-configured by the network-side equipment, or the correspondence between measurement resources and capability indexes is pre-defined in the protocol. Thus, during measurement, the terminal will only use the capability index (sub-receiver) corresponding to the measurement resource for measurement reporting. In some embodiments, another approach is to use the SRS resource (or resource group) corresponding to the sub-receiver to limit the sub-receiver to which the measurement resource is received. For example, each measurement resource corresponds to one SRS resource group (i.e., a sub-receiver). If an associated SRS resource group is explicitly configured for each measurement resource, the UE receives and measures the measurement resource according to the associated SRS resource group.

[0156] Furthermore, the interference measurement resources for multiple sub-receivers can be different. For example, the channel measurement resources of multiple sub-receivers can be used as interference measurement resources for other sub-receivers. For instance, the network-side equipment configures multiple (e.g., two or more) CSI-RS resource settings for the terminal. The first resource setting is used for channel measurement and contains N CSI-RS resource sets. These N resource sets are used for channel measurement of N sub-receivers respectively, and can also be used for interference measurement of other sub-receivers. Therefore, the terminal can determine the interference measurement resources for each sub-receiver according to predefined rules without explicitly configuring the interference measurement resources for each sub-receiver. Additionally, the interference measurement resources or interference measurement resource sets corresponding to multiple sub-receivers can also be the same, for example, used to measure inter-cell interference, inter-user interference, etc.

[0157] When reporting CSI, the terminal can report one or more RI / PMI / CQI. In PMI reporting, multiple sub-receivers can use a joint codebook, or each sub-receiver can use a different codebook. The terminal can use the codebooks in Examples 1 and 2 to provide independent or joint feedback on the CSI of multiple sub-receivers, or it can use a traditional codebook to provide feedback on the CSI of each sub-receiver separately.

[0158] For example, when using the codebook of Method 5 in Example 1, the terminal can feed back the relevant parameters (i.e., W0) of the first SD basis vector for each sub-receiver. When using Method 1 in Example 1, the terminal can feed back the relevant parameters of the first SD basis vector, the relevant parameters (W1) of the second SD basis vector, the combining factor W2 parameter, etc., for each sub-receiver.

[0159] Taking two sub-receivers as an example, the channel measurement resources corresponding to the two sub-receivers are referred to as the first channel measurement resource and the second channel measurement resource (including the case of resource sets), respectively. The interference measurement resources corresponding to the two sub-receivers are referred to as the first interference measurement resource and the second interference measurement resource, respectively. The first channel measurement resource and the second channel measurement resource can be the same resource, resource set, or resource subgroup. The first interference measurement resource and the second interference measurement resource can also be the same resource, resource set, or resource subgroup. There are no restrictions here.

[0160] If each sub-receiver corresponds to its own codebook, the codebooks corresponding to the two sub-receivers can be the same or different. For example, the codebook used by the network-side equipment has an Nt port (Nt is greater than 1), and both sub-receivers correspond to the precoding codebook of the Nt port. For example, the PMI reported by sub-receiver 1 is a precoding codeword with a rank of 3 (Nt). t *3), the PMI reported by sub-receiver 2 is a precoded codeword with rank 2 (N t*2). Then the terminal targets N. t The port codebook provides PMI feedback for each sub-receiver. For example, as shown in Figure 2, the terminal feeds back two PMIs. The first PMI is determined by the terminal based on the first channel measurement resource and the first interference measurement resource, and the second PMI is determined by the terminal based on the second channel measurement resource and the second interference measurement resource. When the first interference measurement resource and the second interference measurement resource are the same, the two PMIs are determined according to the method shown in Figure 3, that is, the first PMI is determined by the terminal based on the first channel measurement resource and the common interference measurement resource, and the second PMI is determined by the terminal based on the second channel measurement resource and the common interference measurement resource.

[0161] For example, the two PMIs reported by the terminal are determined based on the first channel measurement resources and the second channel measurement resources, respectively. In this case, the two PMIs are jointly determined. For instance, the first PMI can maximize the channel of the first sub-receiver while trying to be orthogonal to the channel of the second sub-receiver. Therefore, the two PMIs can be jointly determined by the channel measurement resources of the two sub-receivers, as shown in Figure 4. Specifically, the terminal uses the first sub-receiver to measure the first channel measurement resources to obtain the channel information H. 11 The second sub-receiver is used to measure the first channel measurement resources to obtain channel information H. 21 The first sub-receiver is used to measure the second channel measurement resources to obtain channel information H. 12 The second sub-receiver is used to measure the second channel measurement resources to obtain channel information H. 22 When determining the first PMI (corresponding to the first sub-receiver), the UE can do so based on H. 11 Determine multiple candidate precoding codewords (e.g., precoding codewords close to H) 11 (the eigenvectors), and then based on H 12 or H 22 The final pre-encoded codeword is determined, and the first PMI and H are finally determined. 12 or H 22 Try to make them as orthogonal as possible, such that the second norm is smaller after multiplying the two.

[0162] Similarly, when determining the second PMI (corresponding to the second sub-receiver), the UE can do so based on H. 22 Determine multiple candidate precoding codewords (e.g., precoding codewords close to H) 22 (the eigenvectors), and then based on H 11 or H 21 The final pre-encoding codeword is determined, and the final determined second PMI and H 11 or H 21 Try to make them as orthogonal as possible, such that the second norm is smaller after multiplying the two.

[0163] For example, in the two PMIs fed back by the terminal, the first PMI is determined by the terminal based on the first channel measurement resources, the second channel measurement resources, and the first interference measurement resources; the second PMI is determined by the terminal based on the first channel measurement resources, the second channel measurement resources, and the second interference measurement resources, as shown in Figure 5. When calculating the first PMI, it is necessary not only to maximize the useful signal of the first sub-receiver (i.e., the PMI needs to be determined based on the first channel measurement resources), but also to minimize the interference and neighboring cell interference of the second sub-receiver (i.e., the PMI needs to be determined based on the second channel measurement resources and the first interference measurement resources). Similarly, when calculating the second PMI, it is necessary not only to maximize the useful signal of the second sub-receiver (the PMI needs to be determined based on the second channel measurement resources), but also to minimize the interference and neighboring cell interference of the first sub-receiver (the PMI needs to be determined based on the first channel measurement resources and the second interference measurement resources).

[0164] When the interference measurement resources of the two sub-receivers are the same, the two PMIs are determined according to the method in Figure 6. In this case, the first PMI is determined by the terminal based on the first channel measurement resources, the second channel measurement resources, and the common interference measurement resources. The second PMI is also determined by the terminal based on the first channel measurement resources, the second channel measurement resources, and the common interference measurement resources.

[0165] Method 2: The network-side equipment configures channel measurement resources and / or interference measurement resources for each sub-receiver, and the terminal jointly feeds back CSI for the channel measurement resources and / or interference measurement resources corresponding to each sub-receiver, such as feeding back RI, PMI and CQI;

[0166] In this method, the configuration of the measurement reference signal is the same as in Method 1. Multiple sub-receivers correspond to a common codebook, and therefore, the multiple sub-receivers jointly feed back RI, PMI, and CQI for this codebook.

[0167] Taking two sub-receivers as an example, assuming the codebook corresponds to N t Port (N) t (greater than 1), the PMI jointly reported by sub-receiver 1 and sub-receiver 2 is a precoded codeword with a rank of 5 (N). t *5). If the terminal recommends that sub-receiver 1 perform 3-stream transmission and sub-receiver 2 perform 2-stream transmission, then the terminal will target N... t The port codebook jointly feeds back an N tThe PMI (Personal Interface) of *5. This PMI can be determined by the first channel measurement resources, the second channel measurement resources, the first interference measurement resources, and the second interference measurement resources, similar to Figure 2; it can also be determined by the first channel measurement resources, the second channel measurement resources, and common interference measurement resources, similar to Figure 3; or it can be determined based on the first and second channel measurement resources, such that some layers of the PMI (e.g., the first layer group) can maximize the channel of the first sub-receiver and be as orthogonal as possible to the channel of the second sub-receiver, while other layers of the PMI (e.g., the second layer group) can maximize the channel of the second sub-receiver and be as orthogonal as possible to the channel of the first sub-receiver, similar to Figure 4. The PMI can also be determined based on the first channel measurement resources, the second channel measurement resources, the first interference measurement resources, and the second interference measurement resources, or based on the first channel measurement resources, the second channel measurement resources, and interference measurement resources.

[0168] Taking the terminal determining the joint PMI based on the first channel measurement resources and the second channel measurement resources as an example, the terminal first uses sub-receiver 1 to measure the first channel measurement resources and obtain channel information H. 11 The second channel measurement resource is measured using sub-receiver 2 to obtain channel information H. 22 Combining Method 1 from Example 1, the terminal uses H... 22 Determine the first SD basis vector of the first sub-receiver, for example, among T SD basis vectors, the one that corresponds to H. 22 Try to be orthogonal or with H 22 The SD basis vectors with the smallest 2-norm after multiplication.

[0169] Terminal according to H 11 Determine the first SD basis vector of the second sub-receiver, for example, among P SD basis vectors, the one that corresponds to H. 11 Try to be orthogonal or with H 11 The SD basis vectors with the smallest 2-norm after multiplication.

[0170] Then the terminal according to H 11 The T SD basis vectors corresponding to the first sub-receiver are jointly used to determine the second SD basis vector and the combining factor of the first sub-receiver, according to H. 22 The second SD basis vector and the combining factor of the second sub-receiver are jointly determined by the P SD basis vectors corresponding to the second sub-receiver.

[0171] To provide more information to network-side devices, the terminal can also feed back RI and CQI for each sub-receiver separately, that is, multiple sub-receivers jointly feed back PMI, and each sub-receiver feeds back RI and CQI separately.

[0172] Method 3: The network-side equipment configures channel measurement resources and / or interference measurement resources for the terminal (without configuring them separately for each sub-receiver), and the terminal jointly feeds back RI, PMI, and CQI for multiple sub-receivers;

[0173] In this method, the network-side device sends the same measurement resources to multiple sub-receivers for measurement. The measurement resources are sent to the terminal as a whole, rather than to each sub-receiver individually. For example, the network-side device configures P (e.g., P = 1, 2, 3, etc.) CSI-RS resource settings for the terminal. The first resource setting is used for channel measurement and contains one CSI-RS resource set. Each CSI-RS resource set contains one CSI-RS resource corresponding to all sub-receivers. The terminal can use a unified codebook for PMI determination, as in methods three, four, and five of Example 1.

[0174] For example, the terminal uses multiple sub-receivers to measure the configured measurement resources, determines the channel information of each sub-receiver, and then feeds back the first SD basis vector associated with each sub-receiver, or, for the nth sub-receiver, feeds back the first SD basis vector orthogonal to the channel information of all other sub-receivers except the nth sub-receiver. The reporting of other codebook parameters is similar.

[0175] The terminal can assume that each sub-receiver corresponds to an antenna group (such as a capability index value related to the antenna array, or an SRS resource group, etc.). The terminal determines the capability index value or SRS resource group index corresponding to the measurement resource, and determines the relevant parameters of the first SD basis vector (i.e., the first basis vector parameters), the relevant parameters of the second SD basis vector (i.e., the second basis vector parameters), the combining factor, etc., corresponding to the capability index value or SRS resource group index, and reports them.

[0176] To provide more information to network-side devices, the terminal can also feed back RI and CQI for each sub-receiver separately, that is, multiple sub-receivers jointly feed back PMI, and each sub-receiver feeds back RI and CQI separately.

[0177] In addition, in order to make the correspondence between the reported quantities and the sub-receivers clear to the network-side devices, the terminal can also report the capability index value or SRS resource group index corresponding to each measurement resource.

[0178] Method 4: The network-side equipment configures channel measurement resources and / or interference measurement resources for the terminal (without configuring them separately for each sub-receiver), and the terminal feeds back RI, PMI, and CQI for each sub-receiver separately;

[0179] In this method, the resource configuration method is the same as that in Example 3. It is assumed that each sub-receiver uses an independent codebook for feedback. The codebook is like that in Example 1, Method 2 and Method 5, or it can be other traditional codebooks.

[0180] When using the codebook in Example 1, the terminal can measure and report parameters such as the first basis vector parameter, the second basis vector parameter, and the merging factor corresponding to each sub-receiver (capability value index value or SRS resource group index).

[0181] When using other codebooks, if there are no codebook parameters related to the first basis vector parameter W0, the terminal first uses multiple sub-receivers to measure the configured measurement resources to determine the channel information of each sub-receiver. Then, based on the channel information of each sub-receiver and the configured codebook, it determines multiple candidate precoding codewords. Finally, it multiplies the determined candidate precoding codewords with the channel information of other sub-receivers and selects the precoding codeword that is as orthogonal as possible to the channels of other sub-receivers to report to the network side.

[0182] Based on the above measurement and reporting method, the network-side equipment can obtain suitable pre-encoding codewords, use the obtained pre-encoding codewords to encode the data to be sent, and eliminate the interference between each sub-receiver in advance, so that the terminal can perform low-complexity reception.

[0183] In this embodiment, the terminal feeds back precoded codewords suitable for low-complexity reception by each sub-receiver. When the network-side equipment uses the precoded codewords fed back by the terminal for transmission, interference between multiple sub-receivers can be eliminated in advance, so that the performance loss when multiple sub-receivers perform independent demodulation is controlled within a certain range compared to joint demodulation.

[0184] In embodiments of this disclosure, the terminal determines the first basis vector parameter corresponding to the first antenna group parameter based on the measurement resources corresponding to the first antenna group parameter, or the terminal determines the first basis vector parameter corresponding to the first antenna group parameter based on the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The first basis vector parameter is used to determine the precoding codeword of the first antenna group parameter. In this way, the network-side device can use the precoding codeword to preprocess the data to be transmitted, which can reduce or eliminate the interference between the signal corresponding to the first antenna group parameter and the signal corresponding to other antenna group parameters, thereby reducing the performance loss of signal detection and demodulation.

[0185] As shown in Figure 7, this embodiment of the present disclosure also provides a measurement reporting method, applied to a network-side device, including:

[0186] Step 701: The network-side device receives the CSI sent by the terminal;

[0187] Step 702: The network-side device preprocesses the data to be transmitted according to the CSI;

[0188] Step 703: The network-side device sends the preprocessed data;

[0189] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal includes at least two antenna group parameters.

[0190] In this embodiment, the CSI is obtained by the terminal measuring the measurement resources. The CSI includes at least one first basis vector parameter, which can be considered a precoding indication (PMI) parameter. The CSI may also include one or more other PMI parameters (such as a second basis vector parameter, a combining factor, etc.), a rank indicator (RI), a channel state indicator (CQI), etc. The measurement resources can be configured or pre-configured by the network-side equipment, or determined by the terminal according to predefined rules. It should be noted that the first basis vector parameter in this embodiment belongs to the PMI parameter, and the PMI parameter may also include one or more parameters such as a second basis vector parameter and a combining factor.

[0191] The antenna group parameters are the relevant parameters of the transmitted signal corresponding to a certain antenna group. They can also be understood as the relevant parameters of the transmitted signal corresponding to a certain sub-receiver of the terminal, such as capability index value, Detection Reference Signal (SRS) group index, number of SRS ports, SRS port index, etc., or one or more of these. The antenna group parameters correspond to the sub-receivers of the terminal; they can be understood as representing the sub-receivers of the terminal. For example, if a terminal has 8 receiving antennas, and every 4 receiving antennas are grouped together, with each group capable of performing up to 4 MIMO detections, each group can be considered as corresponding to a sub-receiver used independently for MIMO detection and demodulation. Therefore, each antenna group parameter corresponds to one sub-receiver.

[0192] The CSI includes a first basis vector parameter. The function of the first basis vector parameter is as follows: the network-side device uses the first basis vector parameter to eliminate interference between receivers corresponding to the antenna group parameters; or the network-side device uses the first basis vector parameter to pre-encode data to be sent to the receiver corresponding to the first antenna group parameter, thereby eliminating or reducing interference between the receiver corresponding to the first antenna group parameter and receivers corresponding to other antenna group parameters; or the network-side device uses the first basis vector parameter to pre-encode data to be sent to the receiver corresponding to the first antenna group parameter, thereby eliminating or reducing interference leaked from the receiver corresponding to the first antenna group parameter to receivers corresponding to other antenna group parameters.

[0193] The network-side device can determine the precoding codeword corresponding to the first antenna group parameters based on the first basis vector parameters. Using the precoding codeword, the data to be sent to the receiver corresponding to the first antenna group parameters can be processed, thus eliminating interference to other receivers in advance.

[0194] The first basis vector parameter can be obtained by the terminal measuring the measurement resources corresponding to the first antenna group parameters, or it can be obtained by the terminal measuring the measurement resources corresponding to other antenna group parameters besides the first antenna group parameters.

[0195] In some embodiments, the measurement resources may include channel measurement resources and / or interference measurement resources corresponding to antenna group parameters. For example, the network-side device configures first channel measurement resources and / or first interference measurement resources for first antenna group parameters, and the network-side device also configures second channel measurement resources and / or second interference measurement resources for other antenna group parameters. The first channel measurement resource and the second channel measurement resource may be the same or different, and the first interference measurement resource and the second interference measurement resource may be the same or different. The interference measurement resource corresponding to a certain antenna group parameter may also be the channel measurement resource of other antenna group parameters. For example, the second channel measurement resource is also considered to be the interference measurement resource of the first antenna group parameter.

[0196] The terminal can obtain the first basis vector parameters based on the measurement resources of the first antenna group parameters. For example, the terminal determines the first basis vector parameters and other precoding parameters (such as the second basis vector parameters, combining factor, etc.) based on the channel measurement resources and dedicated interference measurement resources of the first antenna group parameters. The terminal can also determine the precoding matrix corresponding to the first antenna group parameters based on its own channel measurement resources and the measurement resources of other antenna group parameters. For example, the terminal determines the first basis vector parameters based on the channel measurement resources of other antenna group parameters; in this case, the channel measurement resources of the other antenna group parameters can be used as either channel measurement resources or interference measurement resources for the first antenna group parameters. Furthermore, the terminal can determine other precoding parameters based on its own channel measurement resources.

[0197] In some embodiments, the first basis vector parameter is orthogonal to the channel information corresponding to the interference measurement resources that serve as parameters of the first antenna group. This way, when the precoding codeword determined based on the first basis vector parameter is applied to the first antenna group parameters, interference to the signal transmission corresponding to other antenna group parameters can be avoided. For example, a terminal includes two sub-receivers: sub-receiver 1 corresponds to the first antenna group parameters, and sub-receiver 2 corresponds to the second antenna group parameters. The network-side device configures the first channel measurement resources and the first interference measurement resources of sub-receiver 1, and configures the second channel measurement resources and the second interference measurement resources of sub-receiver 2. The terminal uses sub-receiver 1 to measure the first channel measurement resources and the first interference measurement resources to determine the first basis vector parameter and other precoding parameters (such as the second basis vector parameter, combining factor, etc.). For example, the terminal can first determine a subset of candidate precoding codewords based on the channel information obtained from measuring the first channel measurement resources, and then select the precoding codeword that is as orthogonal as possible to the channel information obtained from measuring the first interference measurement resources as the final first basis vector parameter.

[0198] Alternatively, the terminal uses sub-receiver 1 to measure the first channel measurement resources and sub-receiver 2 to measure the second channel measurement resources corresponding to sub-receiver 1, thereby determining the first basis vector parameters and other precoding parameters (such as the second basis vector parameters, combining factor, etc.). In this case, the second channel measurement resources can be used as the interference measurement resources of sub-receiver 1. For example, the terminal can first determine some candidate precoding codewords based on the channel information obtained by measuring the first channel measurement resources, and then select the precoding codewords that are as orthogonal as possible to the channel information obtained by measuring the second channel measurement resources as the final first basis vector parameters.

[0199] Alternatively, the terminal uses sub-receiver 1 to measure the first channel measurement resources and sub-receiver 2 to measure the second channel measurement resources. Based on the measurement results, it determines the first basis vector parameters and other precoding parameters (such as the second basis vector parameters, combining factor, etc.). In this case, the second channel measurement resources can be used as the interference measurement resources of sub-receiver 1. For example, the terminal can first determine some candidate precoding codewords based on the channel information obtained from measuring the first channel measurement resources, and then select the precoding codewords that are as orthogonal as possible to the channel information obtained from measuring the second channel measurement resources as the final first basis vector parameters.

[0200] Because the precoding codewords for the first antenna group parameters fed back by the terminal to the network-side device are orthogonal to the channel information of the interference measurement resources for the first antenna group parameters or the channel measurement resources corresponding to other antenna group parameters, the network-side device uses these precoding codewords to process (precode) the data sent to the sub-receiver corresponding to the first antenna group parameters, thereby eliminating interference between the sub-receiver corresponding to the first antenna group parameters and other sub-receivers. The CSI can include the first basis vector parameters corresponding to each antenna group parameter. Thus, by precoding the data to be transmitted using the precoding codewords corresponding to each antenna group parameter, the network-side device can ensure that each sub-receiver only receives the useful signal sent to it by the network-side device, while the received interference (i.e., the signal sent by the network-side device to other sub-receivers) remains at a low level.

[0201] In embodiments of this disclosure, a network-side device receives a CSI sent by a terminal. The CSI includes a first basis vector parameter, and precoding codewords corresponding to first antenna group parameters can be determined based on the first basis vector parameter. Since the first basis vector parameter is determined by the terminal based on the measurement resources corresponding to the first antenna group parameters, or based on the measurement resources corresponding to other antenna group parameters besides the first antenna group parameters, the network-side device can preprocess the data to be transmitted using the precoding codewords corresponding to the first antenna group parameters. This can reduce or eliminate interference between the signal corresponding to the first antenna group parameters and the signals corresponding to other antenna group parameters, thereby reducing the performance loss of signal detection and demodulation.

[0202] As an optional embodiment, the first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including:

[0203] The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters.

[0204] In this embodiment, the first basis vector parameter can be determined by the interference measurement resource corresponding to the first antenna group parameter. The interference measurement resource can be the interference measurement resource dedicated to the first antenna group parameter configured by the network side device, or it can be the interference measurement resource determined by the terminal according to predefined rules. For example, the terminal determines that the channel measurement resource corresponding to the second antenna group parameter is the interference measurement resource corresponding to the first antenna group parameter according to predefined rules.

[0205] The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameters. This can be understood as the terminal determining the first basis vector parameter based on the channel measurement resources and interference measurement resources corresponding to the first antenna group parameters, or it can be understood as the terminal determining the first basis vector parameter based on the interference measurement resources corresponding to the first antenna group parameters. In some embodiments, the determination of the first basis vector parameter by the measurement resources corresponding to the first antenna group parameters can also be understood as: the first basis vector parameter is orthogonal or nearly orthogonal to the channel information of the interference measurement resources corresponding to the first antenna group parameters, or the multiplication of the first basis vector parameter with the channel information of the interference measurement resources corresponding to the first antenna group parameters results in a smaller L2 norm. For example, when determining the first basis vector parameter, the terminal can choose a precoding codeword orthogonal to the channel information of the interference measurement resources corresponding to the first antenna group parameters as the first basis vector parameter, or the terminal can choose a precoding codeword with the smallest L2 norm after multiplying with the channel information of the interference measurement resources corresponding to the first antenna group parameters as the first basis vector parameter.

[0206] As an optional embodiment, the first basis vector parameters are determined by measurement resources corresponding to other antenna group parameters besides the first antenna group parameters, including:

[0207] The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters.

[0208] In this embodiment, the first basis vector parameter can be determined by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal can also determine the interference measurement resources based on predefined rules, thereby determining the first basis vector parameter. For example, if the network-side device configures channel measurement resources for sub-receiver 1 and sub-receiver 2 respectively, when determining the first basis vector parameter of sub-receiver 1, the channel measurement resources of sub-receiver 2 can be used. For instance, a precoding codeword orthogonal to the channel information of the channel measurement resources of sub-receiver 2 can be selected as the first basis vector parameter of sub-receiver 1.

[0209] In some embodiments, the channel measurement resources corresponding to antenna group parameters other than the first antenna group parameters can also be the interference measurement resources corresponding to the other antenna group parameters, and the interference measurement resources corresponding to the other antenna group parameters are used as the interference measurement resources corresponding to the first antenna group parameters. For example, if the network-side device configures channel measurement resources for sub-receiver 1 and interference measurement resources for sub-receiver 2, when determining the first basis vector parameters of sub-receiver 1, the interference measurement resources of sub-receiver 2 can be used to determine them. For example, a precoding codeword orthogonal to the channel information of the interference measurement resources of sub-receiver 2 can be selected as the first basis vector parameters of sub-receiver 1.

[0210] As an optional embodiment, the method further includes: configuring the length corresponding to the first basis vector parameter, wherein the length corresponding to the first basis vector parameter is related to the number of ports of the measurement resource.

[0211] In this embodiment, the length of the first basis vector parameter corresponds to the number of ports of the measurement resource. For example, the length of the first basis vector parameter is N. t or N t / 2,N t This refers to the number of transmitting antennas, which can also be understood as the number of ports for measuring resources. The length is N. t This indicates that the terminal jointly determines the basis vectors for all antenna ports on the network side, with a length of N. t / 2 indicates that the terminal determines the basis vector for an antenna with a polarization direction on the network side.

[0212] As an optional embodiment, the CSI further includes at least one of the following:

[0213] The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter;

[0214] The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

[0215] In this embodiment, after obtaining the first basis vector parameters, the terminal can further determine the second basis vector parameters and / or the combining factor based on the first basis vector parameters and the measurement resources corresponding to the first antenna group parameters. The second basis vector parameters and / or the combining factor can be used to improve network performance. For example, the terminal can further determine the SD basis vector in the second basis vector parameters based on the channel information of the measurement resources corresponding to the first antenna group parameters and the first basis vector parameters. The terminal reports the second basis vector parameters and / or the combining factor to the network side.

[0216] As an optional embodiment, the CSI sent by the receiving terminal includes:

[0217] A parameter index of the second basis vector parameter sent by the receiving terminal;

[0218] The index of one or both parameters of the first basis vector parameter sent by the receiving terminal.

[0219] In this embodiment, the first basis vector parameter corresponds to one or two parameter indices, for example, the terminal uses parameter i. 1,1 and i 1,2 The first basis vector parameter is reported; the second basis vector parameter corresponds to a parameter index, for example, the terminal uses parameter i. 1,1Report the second basis vector parameter. For example, the first basis vector parameter includes horizontal and vertical dimensions, while the second basis vector parameter does not distinguish between horizontal and vertical dimensions. For example, the matrix dimension of the first basis vector parameter is N. t ×N r2 N t N is the number of antennas (or ports) at the transmitting end. r2 This refers to the number of antennas (or ports) of the receiver corresponding to the antenna group parameters. The matrix dimension of the second basis vector parameters is N. u ×T,N u N represents the length of the SD basis vectors in the second basis vector parameters. u Configured by higher-level parameters, T is the number of SD basis vectors in the second basis vector parameter, T≥1.

[0220] As an optional embodiment, the method further includes: configuring the length corresponding to the second basis vector parameter, wherein the length corresponding to the second basis vector parameter is less than the number of ports of the measurement resource, or the length corresponding to the second basis vector parameter is less than the length corresponding to the first basis vector parameter.

[0221] In this embodiment, the length of the second basis vector parameter is less than the number of ports of the measurement resource. The length of the first basis vector parameter is related to the number of ports of the measurement resource, and the length of the second basis vector parameter can be less than the length of the first basis vector parameter. The lengths of the first and second basis vector parameters can be configured to the terminal by higher-layer parameters.

[0222] As an optional embodiment, the method further includes: configuring measurement resources for the terminal;

[0223] Each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters.

[0224] In this embodiment, each measurement resource is associated with one or more antenna group parameters to determine the CSI. The CSI may include one or more information such as PMI, RI, and CQI. The first basis vector parameter, the second basis vector parameter, the merging factor, etc., can be considered as the PMI. The PMI may be the PMI corresponding to each antenna group parameter individually, or a joint PMI corresponding to all antenna group parameters.

[0225] The terminal performs measurements and reports based on the measurement resources corresponding to the antenna group parameters. When obtaining the PMI by measuring the measurement resources, the terminal can perform measurements based on the correlation between the antenna group parameters and the measurement resources. The obtained PMI is the PMI corresponding to the antenna group parameters. The terminal can feed back the PMI separately for each measurement resource corresponding to each antenna group parameter.

[0226] As an optional embodiment, the CSI is the CSI corresponding to each antenna group parameter, or the CSI is the CSI corresponding to all antenna group parameters.

[0227] In this embodiment, each measurement resource can be associated with one or more antenna group parameters. The terminal measures the measurement resource to obtain the CSI corresponding to the associated one or more antenna group parameters. For example, each antenna group parameter has its own associated measurement resource. The terminal measures the measurement resource associated with the first antenna group parameter to obtain the PMI, which is the CSI corresponding to the first antenna group parameter. As another example, multiple antenna group parameters are associated with the same measurement resource. The terminal measures the measurement resource to obtain the PMI, which is the PMI corresponding to all the antenna group parameters.

[0228] It should be noted that in the embodiments of this disclosure, the measurement resources corresponding to multiple antenna group parameters can be the same or different. For example, when the network-side device uses different precoding matrices for weighting each sub-receiver (such as non-PMI reporting in a TDD scenario), the channel measurement resources corresponding to multiple sub-receivers can be different, and therefore the precoding codewords they use are different. When the channel measurement resources are not weighted using precoding codewords, the channel measurement resources corresponding to multiple sub-receivers can be the same.

[0229] The measurement resources in this disclosure can be measurement resources, a set of measurement resources, or a subgroup of resources.

[0230] As an optional embodiment, the network-side device can also configure the correspondence between measurement resources and antenna group parameters for the terminal. For example, the first measurement resource or measurement resource set or resource subgroup (an implicit or explicit resource subgroup composed of multiple CSI-RS resources within a CSI-RS resource set) is associated with sub-receiver 1 (i.e., associated with the first antenna group parameters), and the second measurement resource or measurement resource set or resource subgroup is associated with sub-receiver 2 (i.e., associated with the second antenna group parameters).

[0231] As an optional embodiment, the antenna group parameters include at least one of the following:

[0232] Capability index value;

[0233] Detection Reference Signal (SRS) group index;

[0234] Number of SRS ports;

[0235] SRS port index.

[0236] In this embodiment, the antenna group parameters can be one or more of the above-mentioned parameters, which can be used to indicate the sub-receiver of the terminal. Since the sub-receiver is only an application scenario, it is not explicitly defined. Instead, panel-related parameters (such as capability value indexes) in uplink transmission can be used to characterize the sub-receiver. The network-side equipment pre-configures the capability value indexes corresponding to the measurement resources, measurement resource sets, or resource subgroups, or the protocol pre-defines the correspondence between measurement resources, measurement resource sets, or resource subgroups and capability value indexes. In this way, when performing measurements, the terminal will only use the capability value indexes (which can also be understood as the corresponding sub-receiver) corresponding to the measurement resources, measurement resource sets, or resource subgroups for measurement reporting.

[0237] The terminal can also use the SRS resources or resource groups corresponding to the sub-receivers to limit the sub-receivers receiving measurement resources. For example, each measurement resource, measurement resource set, or resource subgroup corresponds to an SRS resource group (which can also be understood as corresponding to a sub-receiver). If an associated SRS resource group is explicitly configured for each measurement resource, measurement resource set, or resource subgroup, the UE will receive and measure the measurement resource, measurement resource set, or resource subgroup according to the associated SRS resource group. The SRS resource group can be represented by an SRS group index, or by the number of SRS ports or an SRS port index.

[0238] In embodiments of this disclosure, a network-side device receives a CSI sent by a terminal. The CSI includes a first basis vector parameter, and precoding codewords corresponding to first antenna group parameters can be determined based on the first basis vector parameter. Since the first basis vector parameter is determined by the terminal based on the measurement resources corresponding to the first antenna group parameters, or based on the measurement resources corresponding to other antenna group parameters besides the first antenna group parameters, the network-side device can preprocess the data to be transmitted using the precoding codewords corresponding to the first antenna group parameters. This can reduce or eliminate interference between the signal corresponding to the first antenna group parameters and the signals corresponding to other antenna group parameters, thereby reducing the performance loss of signal detection and demodulation.

[0239] The above embodiments describe the measurement and reporting method of this disclosure. The following embodiments will further describe the corresponding devices in conjunction with the accompanying drawings.

[0240] Specifically, as shown in Figure 8, this embodiment of the present disclosure provides a measurement reporting device 800, applied to a terminal, comprising:

[0241] Measurement unit 810 is used to measure measurement resources and obtain channel state information (CSI).

[0242] The first transmitting unit 820 is used to transmit the CSI to the network-side device;

[0243] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter; the first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

[0244] In some embodiments, the first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including:

[0245] The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

[0246] In some embodiments, the first basis vector parameter is determined by measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, including:

[0247] The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

[0248] In some embodiments, the length of the first basis vector parameter is related to the number of ports of the measurement resource, and the length of the first basis vector parameter is configured by the network-side device.

[0249] In some embodiments, the CSI further includes at least one of the following:

[0250] The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter;

[0251] The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

[0252] In some embodiments, the first transmitting unit is specifically used for:

[0253] The second basis vector parameter is reported using a parameter index, and the first basis vector parameter is reported using one or two parameter indices.

[0254] In some embodiments, the length corresponding to the second basis vector parameter is less than the number of ports of the measurement resource, or the length corresponding to the second basis vector parameter is less than the length corresponding to the first basis vector parameter;

[0255] The length corresponding to the second basis vector parameter is configured by the network-side device.

[0256] In some embodiments, each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters;

[0257] The measurement unit is specifically used to: measure the measurement resource according to the antenna group parameters associated with the measurement resource, and obtain the CSI corresponding to the antenna group parameters.

[0258] In some embodiments, the CSI is the CSI corresponding to each antenna group parameter, or the CSI is the CSI corresponding to all antenna group parameters.

[0259] In some embodiments, the first transmitting unit is specifically used for:

[0260] When each measurement resource is associated with an antenna group parameter, the CSI corresponding to each antenna group parameter is sent to the network-side device;

[0261] or,

[0262] In cases where each measurement resource is associated with at least two antenna group parameters, the CSI corresponding to at least two antenna group parameters is sent to the network-side device.

[0263] In some embodiments, the antenna group parameters include at least one of the following:

[0264] Capability index value;

[0265] Detection Reference Signal (SRS) group index;

[0266] Number of SRS ports;

[0267] SRS port index.

[0268] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0269] Specifically, as shown in Figure 9, this embodiment of the present disclosure provides a measurement reporting device 900, applied to a network-side device, comprising:

[0270] The first receiving unit 910 is used to receive CSI sent by the terminal;

[0271] The first processing unit 920 is used to preprocess the data to be transmitted according to the CSI;

[0272] The second sending unit 930 is used to send the preprocessed data;

[0273] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal includes at least two antenna group parameters.

[0274] In some embodiments, the first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including:

[0275] The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters.

[0276] In some embodiments, the first basis vector parameter is determined by measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, including:

[0277] The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters.

[0278] In some embodiments, the apparatus further includes:

[0279] The first configuration unit is used to configure the length corresponding to the first basis vector parameter, the length of which is related to the number of ports of the measurement resource.

[0280] In some embodiments, the CSI further includes at least one of the following:

[0281] The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter;

[0282] The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

[0283] In some embodiments, the first receiving unit is specifically used for:

[0284] A parameter index of the second basis vector parameter sent by the receiving terminal;

[0285] The index of one or both parameters of the first basis vector parameter sent by the receiving terminal.

[0286] In some embodiments, the apparatus further includes:

[0287] The second configuration unit is used to configure the length corresponding to the second basis vector parameter, wherein the length corresponding to the second basis vector parameter is less than the number of ports of the measurement resource, or the length corresponding to the second basis vector parameter is less than the length corresponding to the first basis vector parameter.

[0288] In some embodiments, the apparatus further includes:

[0289] The third configuration unit is used to configure measurement resources for the terminal;

[0290] Each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters.

[0291] In some embodiments, the CSI is the CSI corresponding to each antenna group parameter, or the CSI is the CSI corresponding to all antenna group parameters.

[0292] In some embodiments, the antenna group parameters include at least one of the following:

[0293] Capability index value;

[0294] Detection Reference Signal (SRS) group index;

[0295] Number of SRS ports;

[0296] SRS port index.

[0297] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the method embodiment applied to network side devices and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0298] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0299] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0300] As shown in Figure 10, an embodiment of this disclosure also provides a terminal, including: a memory 1020, a transceiver 1000, and a processor 1010; wherein, the memory 1020 is used to store computer programs; the transceiver 1000 is used to receive and send data under the control of the processor 1010; and the processor 1010 is used to read the computer program in the memory and perform the following operations:

[0301] The measurement resources are measured to obtain Channel State Information (CSI).

[0302] Send the CSI to the network-side device;

[0303] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter; the first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

[0304] In some embodiments, the first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including:

[0305] The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

[0306] In some embodiments, the first basis vector parameter is determined by measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, including:

[0307] The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

[0308] In some embodiments, the length of the first basis vector parameter is related to the number of ports of the measurement resource, and the length of the first basis vector parameter is configured by the network-side device.

[0309] In some embodiments, the CSI further includes at least one of the following:

[0310] The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter;

[0311] The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

[0312] In some embodiments, the processor is configured to read a computer program from the memory and perform the following operations:

[0313] The second basis vector parameter is reported using a parameter index, and the first basis vector parameter is reported using one or two parameter indices.

[0314] In some embodiments, the length corresponding to the second basis vector parameter is less than the number of ports of the measurement resource, or the length corresponding to the second basis vector parameter is less than the length corresponding to the first basis vector parameter;

[0315] The length corresponding to the second basis vector parameter is configured by the network-side device.

[0316] In some embodiments, each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters;

[0317] The processor is used to read the computer program in the memory and perform the following operations:

[0318] The measurement resource is measured according to the antenna group parameters associated with the measurement resource to obtain the CSI corresponding to the antenna group parameters.

[0319] In some embodiments, the CSI is the CSI corresponding to each antenna group parameter, or the CSI is the CSI corresponding to all antenna group parameters.

[0320] In some embodiments, the processor is configured to read a computer program from the memory and perform the following operations:

[0321] When each measurement resource is associated with an antenna group parameter, the CSI corresponding to each antenna group parameter is sent to the network-side device;

[0322] or,

[0323] In cases where each measurement resource is associated with at least two antenna group parameters, the CSI corresponding to at least two antenna group parameters is sent to the network-side device.

[0324] In some embodiments, the antenna group parameters include at least one of the following:

[0325] Capability index value;

[0326] Detection Reference Signal (SRS) group index;

[0327] Number of SRS ports;

[0328] SRS port index.

[0329] In Figure 10, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1010 and memory represented by memory 1020. 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 described further herein. The bus interface provides an interface. The transceiver 1000 can be multiple components, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1030 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0330] The processor 1010 is responsible for managing the bus architecture and general processing, while the memory 1020 can store the data used by the processor 1010 when performing operations.

[0331] In some embodiments, the processor 1010 may 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 may also adopt a multi-core architecture.

[0332] The processor executes any of the methods described in the embodiments of this disclosure by invoking a computer program stored in memory, according to the obtained executable instructions. The processor and memory may also be physically separated.

[0333] It should be noted that the terminal provided in this embodiment can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0334] As shown in Figure 11, an embodiment of this disclosure also provides a network-side device, including: a memory 1120, a transceiver 1100, and a processor 1110; wherein, the memory 1120 is used to store computer programs; the transceiver 1100 is used to receive and send data under the control of the processor 1110; and the processor 1110 is used to read the computer program in the memory and perform the following operations:

[0335] Receive CSI sent by the terminal;

[0336] Preprocess the data to be transmitted according to the CSI;

[0337] Send the preprocessed data;

[0338] The CSI includes at least one first basis vector parameter, which is used to determine the precoded codeword corresponding to the first antenna group parameter. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter. The terminal includes at least two antenna group parameters.

[0339] In some embodiments, the first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including:

[0340] The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters.

[0341] In some embodiments, the first basis vector parameter is determined by measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, including:

[0342] The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters.

[0343] In some embodiments, the processor is configured to read a computer program from the memory and perform the following operations:

[0344] Configure the length corresponding to the first basis vector parameter, which is related to the number of ports of the measurement resource.

[0345] In some embodiments, the CSI further includes at least one of the following:

[0346] The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter;

[0347] The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

[0348] In some embodiments, the processor is configured to read a computer program from the memory and perform the following operations:

[0349] A parameter index of the second basis vector parameter sent by the receiving terminal;

[0350] The index of one or both parameters of the first basis vector parameter sent by the receiving terminal.

[0351] In some embodiments, the processor is configured to read a computer program from the memory and perform the following operations:

[0352] Configure the length of the second basis vector parameter, where the length of the second basis vector parameter is less than the number of ports of the measurement resource, or the length of the second basis vector parameter is less than the length of the first basis vector parameter.

[0353] In some embodiments, the processor is configured to read a computer program from the memory and perform the following operations:

[0354] Configure measurement resources for the terminal;

[0355] Each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters.

[0356] In some embodiments, the CSI is the CSI corresponding to each antenna group parameter, or the CSI is the CSI corresponding to all antenna group parameters.

[0357] In some embodiments, the antenna group parameters include at least one of the following:

[0358] Capability index value;

[0359] Detection Reference Signal (SRS) group index;

[0360] Number of SRS ports;

[0361] SRS port index.

[0362] In Figure 11, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1110 and memory represented by memory 1120. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 1100 may be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. The processor is responsible for managing the bus architecture and general processing. Processor 1110 is responsible for managing the bus architecture and general processing, and memory 1120 may store data used by processor 1110 during operation.

[0363] The processor 1110 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.

[0364] It should be noted that the network-side device provided in this embodiment can implement all the method steps implemented in the method embodiment applied to the network-side device, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0365] In addition, specific embodiments of this disclosure also provide a processor-readable storage medium storing a program for causing the processor to execute the above-described measurement reporting method, which achieves the same technical effect. To avoid repetition, it will not be described again here. The readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magnetic optical disk (MO)), optical memory (e.g., compact disc (CD), digital video disc (DVD), Blu-ray disc (BD), high-definition versatile disc (HVD)), and semiconductor memory (e.g., read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid state hard disk (SSD)).

[0366] It should be noted that the technical solutions provided in this disclosure are applicable 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 terminal equipment and network equipment. The systems may also include a core network component, such as the Evolved Packet Core (EPC) and the 5G Core Network (5GC).

[0367] The terminal devices involved in the embodiments of this disclosure can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in 5G or 6G systems, the terminal device may be called User Equipment (UE). Wireless terminal devices can be USB storage devices, other personal computer memory devices, and dongles. They can also communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablets, and Machine-type Communication (MTC) terminal devices. Wireless terminal devices can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile devices, remote stations, access points, remote terminals, access terminals, user terminals, user agents, user devices, and wireless access devices and routers / modems that meet the limitations of this definition, but are not limited to these specific embodiments in this disclosure.

[0368] The network-side equipment involved in this disclosure can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network-side equipment can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network-side equipment can also coordinate the attribute management of the air interface. For example, the network-side equipment involved in this disclosure can be 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, or a Home evolved Node B (HeNB), relay node, femto, pico, network testing equipment, etc., and is not limited in this disclosure. In some network architectures, network-side devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, which may also be geographically separated.

[0369] 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.

[0370] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0371] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0372] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more blocks of a block diagram.

[0373] These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of a block diagram.

[0374] Furthermore, it should be noted that in the apparatus and method of this disclosure, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of this disclosure. Moreover, the steps performing the above series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of this disclosure can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof, which can be achieved by those skilled in the art using their basic programming skills after reading the description of this disclosure.

[0375] It should be noted that the above division of modules is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. For example, a module can be a separate processing element, or it can be integrated into a chip in the aforementioned device. Alternatively, it can be stored as program code in the memory of the aforementioned device, and its function can be called and executed by a processing element of the device. The implementation of other modules is similar. Moreover, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0376] For example, each module, unit, subunit, or submodule can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0377] The terms “first,” “second,” etc., used in this disclosure and in the claims are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. Additionally, the use of “and / or” in the specification and claims indicates at least one of the connected objects, such as A and / or B and / or C, indicating seven possibilities: A alone, B alone, C alone, and both A and B, both B and C, both A and C, and A, B, and C. Similarly, the use of “at least one of A and B” in this specification and claims should be understood as “A alone, B alone, or both A and B.”

[0378] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A measurement reporting method, comprising: The terminal measures the measurement resources and obtains Channel State Information (CSI). The terminal sends the CSI to the network-side device; The CSI includes at least one first basis vector parameter, which is used to determine the precoding codewords corresponding to the first antenna group parameters. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

2. The method according to claim 1, wherein, The first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including: The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

3. The method according to claim 1, wherein, The first basis vector parameters are determined by the measurement resources corresponding to the other antenna group parameters besides the first antenna group parameters, including: The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters, or the interference measurement resources determined by the terminal according to predefined rules.

4. The method according to claim 1, wherein, The length of the first basis vector parameter is related to the number of ports of the measurement resource, and the length of the first basis vector parameter is configured by the network-side device.

5. The method according to claim 1, wherein, The CSI also includes at least one of the following: The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter; The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

6. The method according to claim 5, wherein, Sending the CSI to the network-side device includes: The second basis vector parameter is reported using a parameter index, and the first basis vector parameter is reported using one or two parameter indices.

7. The method according to claim 5, wherein, The length of the second basis vector parameter is less than the number of ports of the measurement resource, or the length of the second basis vector parameter is less than the length of the first basis vector parameter; The length corresponding to the second basis vector parameter is configured by the network-side device.

8. The method according to any one of claims 1 to 5, wherein, Each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters; The measurement of measurement resources to obtain Channel State Information (CSI) includes: The measurement resource is measured according to the antenna group parameters associated with the measurement resource to obtain the CSI corresponding to the antenna group parameters.

9. The method according to claim 1 or 8, wherein, The CSI is either the CSI corresponding to each antenna group parameter or the CSI corresponding to all antenna group parameters.

10. The method according to claim 1, 8, or 9, wherein, Sending the CSI to the network-side device includes: When each measurement resource is associated with an antenna group parameter, the CSI corresponding to each antenna group parameter is sent to the network-side device; or, In cases where each measurement resource is associated with at least two antenna group parameters, the CSI corresponding to at least two antenna group parameters is sent to the network-side device.

11. The method according to any one of claims 1 to 10, wherein, The antenna group parameters include at least one of the following: Capability index value; Detection Reference Signal (SRS) group index; Number of SRS ports; SRS port index.

12. A measurement reporting method, comprising: Network-side equipment receives CSI sent by the terminal; The network-side device preprocesses the data to be transmitted according to the CSI. The network-side device sends the preprocessed data; The CSI includes at least one first basis vector parameter, which is used to determine the precoding codewords corresponding to the first antenna group parameters. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, and the terminal includes at least two antenna group parameters.

13. The method according to claim 12, wherein, The first basis vector parameters are determined by the measurement resources corresponding to the first antenna group parameters, including: The first basis vector parameter is determined by the interference measurement resources corresponding to the first antenna group parameters; the interference measurement resources are the interference measurement resources configured by the network-side device for the first antenna group parameters.

14. The method according to claim 12, wherein, The first basis vector parameters are determined by the measurement resources corresponding to the other antenna group parameters besides the first antenna group parameters, including: The first basis vector parameter is determined by the channel measurement resources corresponding to the other antenna group parameters besides the first antenna group parameter; the channel measurement resources are the channel measurement resources configured by the network-side device for the other antenna group parameters.

15. The method according to claim 12, wherein, The method further includes: Configure the length corresponding to the first basis vector parameter, which is related to the number of ports of the measurement resource.

16. The method according to claim 12, wherein, The CSI also includes at least one of the following: The second basis vector parameter is determined based on the measurement resources corresponding to the first basis vector parameter and the first antenna group parameter; The merging factor is determined based on the measurement resources corresponding to the first basis vector parameters and the first antenna group parameters.

17. The method according to claim 16, wherein, The CSI sent by the receiving terminal includes: A parameter index of the second basis vector parameter sent by the receiving terminal; The index of one or both parameters of the first basis vector parameter sent by the receiving terminal.

18. The method according to claim 16, wherein, The method further includes: Configure the length of the second basis vector parameter, where the length of the second basis vector parameter is less than the number of ports of the measurement resource, or the length of the second basis vector parameter is less than the length of the first basis vector parameter.

19. The method according to claim 12, wherein, The method further includes: Configure measurement resources for the terminal; Each of the measurement resources is associated with one antenna group parameter, or each of the measurement resources is associated with at least two antenna group parameters.

20. The method according to claim 12 or 19, wherein, The CSI is either the CSI corresponding to each antenna group parameter or the CSI corresponding to all antenna group parameters.

21. The method according to any one of claims 12 to 20, wherein, The antenna group parameters include at least one of the following: Capability index value; Detection Reference Signal (SRS) group index; Number of SRS ports; SRS port index.

22. A terminal, comprising: Memory, transceiver, processor: Memory, used to store computer programs; A transceiver, used to receive and send data under the control of the processor; Processor, configured to read the computer program in the memory and perform the following operations: The measurement resources are measured to obtain Channel State Information (CSI). Send the CSI to the network-side device; The CSI includes at least one first basis vector parameter, which is used to determine the precoding codewords corresponding to the first antenna group parameters. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

23. A network-side device, comprising: Memory, transceiver, processor: Memory, used to store computer programs; A transceiver, used to receive and send data under the control of the processor; Processor, configured to read the computer program in the memory and perform the following operations: Receive CSI sent by the terminal; Preprocess the data to be transmitted according to the CSI; Send the preprocessed data; The CSI includes at least one first basis vector parameter, which is used to determine the precoding codewords corresponding to the first antenna group parameters. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, and the terminal includes at least two antenna group parameters.

24. A measurement reporting device, comprising: The measurement unit is used to measure measurement resources and obtain channel state information (CSI). The first transmitting unit is used to transmit the CSI to the network-side device; The CSI includes at least one first basis vector parameter, which is used to determine the precoding codewords corresponding to the first antenna group parameters. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter; the terminal includes at least two antenna group parameters.

25. A measurement reporting device, comprising: The first receiving unit is used to receive CSI sent by the terminal; The first processing unit is used to preprocess the data to be transmitted according to the CSI; The second sending unit is used to send the preprocessed data; The CSI includes at least one first basis vector parameter, which is used to determine the precoding codewords corresponding to the first antenna group parameters. The first basis vector parameter is determined by the measurement resources corresponding to the first antenna group parameter, or by the measurement resources corresponding to other antenna group parameters besides the first antenna group parameter, and the terminal includes at least two antenna group parameters.

26. A processor-readable storage medium storing a program for causing the processor to perform the method of any one of claims 1 to 11, or to perform the method of any one of claims 12 to 21.

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