Channel state information reporting method and apparatus, and storage medium

Abstract

The present disclosure relates to a channel state information reporting method and device, and a storage medium, and belongs to the technical field of communication, and is used for improving the transmission performance of multi-TRP. The method comprises the following steps: receiving first configuration information sent by a network device, wherein the first configuration information is used for configuring at least one channel measurement resource (CMR), and the at least one CMR comprises N channel state information reference signal (CSI-RS) resources, wherein N is an integer greater than 1.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method, apparatus and storage medium for reporting Channel State Information (CSI). Background Technology

[0002] New Radio (NR) technology introduces Coherent Joint Transmission (CJT) based on Multiple Transmission Reception Points (M-TRPs). Network devices can transmit or receive beams through multiple Transmission Reception Points (TRPs) to provide services to terminals.

[0003] When network devices provide services to terminals via TRPs, they configure Channel Measurement Resources (CMRs) for each TRP. However, for CJTs with multiple TRPs, how to report Channel State Information (CSI) is a problem that needs to be solved. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a channel state information reporting method, apparatus and storage medium.

[0005] According to a first aspect of the present disclosure, a channel state information reporting method is provided, applied to a terminal, the method comprising: receiving first configuration information sent by a network device, the first configuration information being used to configure at least one channel measurement resource (CMR), the at least one CMR including N channel state information reference signal (CSI-RS) resources, where N is an integer greater than 1.

[0006] According to a second aspect of the present disclosure, a channel state information reporting method is provided, applied to a network device. The method includes: sending first configuration information to a terminal, the first configuration information being used to configure at least one channel measurement resource (CMR), the at least one CMR including N channel state information reference signal (CSI-RS) resources, where N is an integer greater than 1.

[0007] According to a third aspect of embodiments of the present disclosure, a channel state information reporting apparatus is provided, applied to a terminal, the apparatus comprising: a receiving module configured to receive first configuration information sent by a network device, the first configuration information being used for configuring at least one channel measurement resource (CMR), the at least one CMR comprising N channel state information reference signal (CSI-RS) resources, N being an integer greater than 1.

[0008] According to a fourth aspect of embodiments of the present disclosure, a channel state information reporting apparatus is provided, applied to a network device, the apparatus comprising: a sending module configured to send first configuration information to a terminal, the first configuration information being used for configuring at least one channel measurement resource (CMR), the at least one CMR comprising N channel state information reference signal (CSI-RS) resources, N being an integer greater than 1.

[0009] According to a fifth aspect of embodiments of the present disclosure, a channel state information reporting apparatus is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the method in the first aspect and any one of the implementations thereof.

[0010] According to a sixth aspect of embodiments of the present disclosure, a channel state information reporting apparatus is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the method in the second aspect and any one of the implementations thereof.

[0011] According to a seventh aspect of embodiments of the present disclosure, a storage medium is provided, the storage medium storing instructions, when the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the method in the first aspect and any one of the implementations thereof.

[0012] According to an eighth aspect of embodiments of the present disclosure, a storage medium is provided, the storage medium storing instructions, when the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute the method in the second aspect and any one of the implementations thereof.

[0013] According to a ninth aspect of embodiments of the present disclosure, a communication system is provided, comprising a terminal and a network device, wherein the terminal is configured to execute the method in the first aspect and any one of the implementations thereof; the network device is configured to execute the method in the second aspect and any one of the implementations thereof.

[0014] The technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: the terminal receives the first configuration information sent by the network device, wherein the first configuration information is used for configuring at least one CMR, and the at least one CMR includes N CSI-RS resources. Therefore, the terminal can perform CSI measurement based on the configuration of the CMR in the coherent joint transmission scenario of multiple transmission and reception points, and the transmission performance of the multiple transmission and reception points is improved.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the description.

[0017] Figure 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0018] Figure 2 is a flowchart of a channel state information reporting method according to an exemplary embodiment.

[0019] Figure 3 is a flowchart of a channel state information reporting method according to an exemplary embodiment.

[0020] Figure 4 is a flowchart of a channel state information reporting method according to an exemplary embodiment.

[0021] Figure 5 is a flowchart of a channel state information reporting method according to an exemplary embodiment.

[0022] Figure 6 is a flowchart of a channel state information reporting method according to an exemplary embodiment.

[0023] Figure 7 is a flowchart of a channel state information reporting method according to an exemplary embodiment.

[0024] Figure 8 is a block diagram of a channel state information reporting apparatus according to an exemplary embodiment.

[0025] Figure 9 is a block diagram of a channel state information reporting apparatus according to an exemplary embodiment.

[0026] Figure 10 is a block diagram of a channel state information reporting apparatus according to an exemplary embodiment.

[0027] Figure 11 is a block diagram of a channel state information reporting apparatus according to an exemplary embodiment. DETAILED DESCRIPTION

[0028] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, unless otherwise indicated, the same numbers on the different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

[0029] The channel state information reporting method provided by the embodiments of the present disclosure can be applied to Figure 1 a wireless communication system as shown in FIG. 1. Referring to FIG. 1, the wireless communication system includes a network device and a terminal. The terminal is connected to the network device through a wireless resource and performs data transmission. Figure 1

[0030] It can be understood that Figure 1 the wireless communication system as shown in FIG. 1 is only illustrative, and the wireless communication system can further include other network devices, such as a core network device, a wireless relay device, and a wireless backhaul device, etc., which are not shown in FIG. 1. The embodiments of the present disclosure do not limit the number of network devices and the number of terminals in the wireless communication system. Figure 1

[0031] ​​It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access with collision avoidance (CSMA / CA). According to different network capacities, rates, latencies, and other factors, the network can be divided into 2G (English: generation) networks, 3G networks, 4G networks, or future evolution networks such as 5G networks. The 5G network can also be referred to as a new radio network (New Radio, NR). For the convenience of description, the wireless communication network in the present disclosure will be referred to as a network.

[0032] Further, the network device involved in the present disclosure can also be referred to as a wireless access network device. The wireless access network device can be a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in the NR system, or it can also be a component or part of a device that constitutes a base station, etc. It should be understood that the specific technology and specific device form of the network device in the embodiments of the present disclosure are not limited. In the present disclosure, the network device can provide communication coverage for a specific geographic area, and can communicate with terminals located in the coverage area (cell). In addition, when it is a vehicle-to-everything (V2X) communication system, the network device can also be a vehicle-mounted device.

[0033] Further, the terminal involved in the present disclosure, which can also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to a user, such as a handheld device having wireless connection capability, a vehicle-mounted device, etc. Currently, some examples of the terminal are: a mobile phone, a customer premise equipment (CPE), a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the present embodiments do not limit the specific technology and specific device form of the terminal.

[0034] In new radio technology (NR), coherent joint transmission (CJT) based on multi-transmission reception point (M-TRP) is introduced. The network device can perform transmission through multiple transmission reception points (TRPs) receiving or transmitting beams, thereby providing services for the terminal.

[0035] When the network device provides services for the terminal through the TRP, the network device will configure the channel measurement resource (CMR) for the TRP. However, for the CJT of the multi-TRP, how to report the channel state information (CSI) is a problem to be solved.

[0036] Based on this, the present embodiments provide a channel state information reporting method. A terminal receives first configuration information sent by a network device, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N channel state information reference signal (CSI-RS) resources. Thus, in the coherent joint transmission scenario of the multi-transmission reception point, the terminal can perform CSI measurement based on the configuration of the CMR, thereby improving the transmission performance of the multi-TRP.

[0037] Figure 2 is a flow chart of a channel state information reporting method according to an example embodiment, as shown in Figure 2 The channel state information reporting method is used in a terminal, and includes the following steps.

[0038] In step S11, first configuration information sent by a network device is received, and the first configuration information is used to configure at least one CMR, and the at least one CMR includes N CSI-RS resources, N being an integer greater than 1.

[0039] The N CSI-RS resources correspond to N TRPs. That is, the network device indicates the CSI-RS resources corresponding to the N TRPs.

[0040] In the embodiments of the present disclosure, the terminal receives the first configuration information sent by the network device, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N CSI-RS resources. Thus, the terminal can perform CSI measurement based on the configuration of the CMR in the coherent joint transmission scenario of multiple transmission and reception points, and improve the transmission performance of the multiple transmission and reception points.

[0041] Figure 3 is a flow chart of a channel state information reporting method according to an example embodiment, as shown in Figure 3 The channel state information reporting method includes the following steps.

[0042] In step S21, second configuration information sent by a network device is received, and the second configuration information is used to configure at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination, and the at least one spatial domain basis vector combination includes the number of spatial domain basis vectors corresponding to each resource in N CSI-RS resources.

[0043] The spatial domain basis vector can also be referred to as a beam.

[0044] In some embodiments, the spatial domain basis vector is related to at least one of N1, N2, O1, and O2. N1 is the number of first-dimension antenna ports, N2 is the number of second-dimension antenna ports, O1 is the first-dimension oversampling rate, and O2 is the second-dimension oversampling rate. The number of antenna ports can be understood as the number of ports of the CSI-RS.

[0045] For example, the selection of the spatial domain basis vector can be understood as selecting a specified number of spatial domain basis vectors from the total number of antenna ports N1*N2 of each CSI-RS resource.

[0046] In the embodiments of the present disclosure, the second configuration information is used for configuring at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination, so that after the terminal determines the number of spatial domain basis vectors corresponding to each CSI-RS resource, the terminal can determine the combination index corresponding to the spatial domain basis vector combination corresponding to the number of spatial domain basis vectors corresponding to the N CSI-RS resources.

[0047] It should be noted that the embodiments shown in Figure 2 may be implemented alone, that is, the embodiments shown in Figure 2 When the embodiments shown in Figure 2 are implemented alone, the terminal can receive the first configuration information for configuring at least one CMR sent by the network device, and whether to receive the second configuration information for configuring at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination, or in what way to determine the at least one spatial domain basis vector combination and the combination index corresponding to the at least one spatial domain basis vector combination, the embodiments of the present disclosure do not make any limitation. The embodiments shown in Figure 3 may also be implemented in combination with other embodiments of the present disclosure, for example, in combination with the embodiments shown in ; that is, the terminal can receive the first configuration information for configuring at least one CMR sent by the network device, and the terminal also receives the second configuration information for configuring at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination sent by the network device. In the embodiments of the present disclosure, the first configuration message and the second configuration message can be carried in different signaling or the same signaling, and the embodiments of the present disclosure do not make any limitation.

[0048] Figure 4 A flowchart of a channel state information reporting method according to an exemplary embodiment is shown in Figure 4 , which includes the following steps.

[0049] In step S31, based on the first configuration information and / or the second configuration information, the N CSI-RS resources are measured, and the first indication information and / or the second indication information are determined.

[0050] The first indication information is used for indicating the target CSI-RS resource and / or the non-target CSI-RS resource in the N CSI-RS resources, and the second indication information is used for indicating at least one combination index.

[0051] In some embodiments, the combination index indicated by the second indication information corresponds to the spatial domain basis vector combination used for determining the number of spatial domain basis vectors corresponding to the target CSI-RS resource.

[0052] It is worth mentioning that the terminal can implicitly determine the combination index corresponding to the combination of the at least one spatial domain basis vector, and thus does not need the second configuration information sent by the network device. The terminal can determine the second indication information based on the first configuration information and the measurement of the N CSI-RS resources.

[0053] For example, when the terminal determines, based on the configuration information of the network device or a default rule, that the candidate values of the number of spatial domain basis vectors corresponding to each CSI-RS resource are 2, 4, and 6, if the number of CSI-RS resources included in one CMR is 2, the combination of spatial domain basis vectors can include the following 9 combinations and corresponding combination indexes:

[0054] Combination 1: {2, 2}

[0055] Combination 2: {2, 4}

[0056] Combination 3: {2, 6}

[0057] Combination 4: {4, 2}

[0058] Combination 5: {4, 4}

[0059] Combination 6: {4, 6}

[0060] Combination 7: {6, 2}

[0061] Combination 8: {6, 4}

[0062] Combination 9: {6, 6}

[0063] Of course, the correspondence between the above combinations and combination indexes is not limited to the correspondence given in this embodiment.

[0064] In the channel state information reporting method provided in the embodiment of the disclosure, the first indication information and / or the second indication information are sent to the network device.

[0065] In the embodiment of the disclosure, by measuring the N CSI-RS resources, the target CSI-RS resource or the non-target CSI-RS resource selected by the terminal from the N CSI-RS resources, the number of spatial domain basis vectors corresponding to the target CSI-RS resource, and the combination index corresponding to the combination of the number of spatial domain basis vectors corresponding to the target CSI-RS resource can be determined. Thus, after the first indication information and / or the second indication information are sent to the network device, the network device can know the target CSI-RS resource selected by the terminal and the number of spatial domain basis vectors corresponding to the target CSI-RS resource, and the transmission performance of the multi-TRP based CJT is improved.

[0066] In the channel state information reporting method provided in the embodiments of the present disclosure, the number of spatial domain basis vectors corresponding to the target CSI-RS resource in the combination corresponding to the combination index indicated by the second indication information is indicated by the first indication information.

[0067] For example, the CMR configured by the first configuration information contains 4 CSI-RS resources, the first indication information indicates that the first three CSI-RS resources among the 4 CSI-RS resources are target CSI-RS resources, and the last CSI-RS resource is a non-target CSI-RS resource, and the number of spatial domain basis vectors selected for each target CSI-RS resource is 2, 4, and 2 respectively. Then the combination corresponding to the combination index indicated by the second indication information is {2, 4, 2, 6}, that is, the number of spatial domain basis vectors corresponding to the target CSI-RS resource is 2, 4, and 2 respectively.

[0068] The combination {2, 4, 2, 6} corresponding to the combination index indicated by the second indication information is a combination configured by the network device through the second configuration information. If the CMR configured by the first configuration information contains N CSI-RS resources, the combination configured by the second configuration information will include the number of spatial domain basis vectors that the N CSI-RS resources may correspond to. Whether the terminal selects all the N CSI-RS resources as target CSI-RS resources or not, the combination corresponding to the combination index indicated by the second indication information will include the number of spatial domain basis vectors corresponding to the N CSI-RS resources.

[0069] In the channel state information reporting method provided in the embodiments of the present disclosure, the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0.

[0070] It is worth noting that no matter what the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the combination configured by the second configuration information for N CSI-RS resources is or what the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the combination corresponding to the combination index indicated by the second indication information is, the actual number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0.

[0071] In the above embodiment, if the terminal selects part of the CSI-RS resources configured by the first configuration information (also referred to as target CSI-RS resources), and another part of the CSI-RS resources is not selected by the terminal (also referred to as non-target CSI-RS resources), if the number of the spatial domain basis vectors corresponding to each CSI-RS resource contained in the CMR is determined only according to the second indication information, the network device needs to consider that the number of the spatial domain basis vectors corresponding to the part of the CSI-RS resources not selected by the terminal is 0, and therefore, the network device needs to configure the terminal with all combinations of the spatial domain basis vector combinations corresponding to all the CSI-RS resources, wherein the number of the spatial domain basis vectors corresponding to each CSI-RS resource contains 0 and non-0 (such as 2, 4, 6), which causes a large RRC signaling overhead and a large number of combinations. Meanwhile, the number of bits required when the terminal indicates the selected combination index in the uplink control information (UCI) is also large, which causes a large UCI signaling overhead.

[0072] For example, if the number of the non-0 basis vectors only contains 2, the number of the spatial domain basis vectors selected by the terminal for each target CSI-RS resource is 2, and if the number of the spatial domain basis vectors corresponding to the non-target CSI-RS resources is considered to be 0, the number of bits required for the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to the following 15 combinations:

[0073] {2, 2, 2, 2}, {0, 2, 2, 2}, {0, 0, 2, 2}, {0, 0, 0, 2}, {2, 0, 2, 2}, {2, 0, 0, 2}, {2, 0, 0, 0}, {2, 2, 0, 2}, {2, 2, 0, 0}, {2, 2, 2, 0}, {0, 2, 0, 2}, {0, 2, 2, 0}, {0, 0, 2, 0}, {0, 0, 2, 2}, {0, 2, 0, 0}.

[0074] However, if the second indication information is combined with the first indication information, since the spatial domain basis vectors corresponding to the non-target CSI-RS resources indicated by the first indication information are all 0, it is not necessary to consider the number of the spatial domain basis vectors corresponding to the non-target CSI-RS resources in the spatial domain basis vector combination corresponding to the combination index indicated by the second indication information, and therefore, the spatial domain basis vector combination only needs to be {2, 2, 2, 2} to determine the number of the spatial domain basis vectors corresponding to the target CSI-RS resources. That is, if the first indication information indicates the target CSI-RS resources and the non-target CSI-RS resources, and the spatial domain basis vector combination corresponding to the combination index indicated by the second indication information is {2, 2, 2, 2}, the base station can determine that the number of the spatial domain basis vectors corresponding to the target CSI-RS resources is 2, and the number of the spatial domain basis vectors corresponding to the non-target CSI-RS resources is 0.

[0075] For example, if the number of non-zero basis vectors includes 2 and 4, the number of spatial domain basis vectors selected by the terminal for each target CSI-RS resource is 2 or 4, and if the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0, the bit number required by the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to the 81 combinations including 0, 2 and 4:

[0076] {2, 2, 4, 4}, {0, 2, 4, 4}, {0, 0, 4, 4}, {2, 2, 4, 2}, {2, 0, 4, 4}, {2, 0, 4, 2}, {4, 2, 0, 0}, {4, 2, 0, 2}, {4, 2, 0, 0}, {4, 2, 2, 0}, {4, 2, 0, 2}...

[0077] However, if the second indication information is combined with the first indication information, since the spatial domain basis vectors corresponding to the non-target CSI-RS resource indicated by the first indication information are all 0, it is not necessary to consider the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the spatial domain basis vector combination corresponding to the combination index indicated by the second indication information, and thus the spatial domain basis vector combination indicated by the second indication information only needs to indicate the 16 combinations including 2 and 4, greatly reducing the number of combinations corresponding to the combination index indicated by the second indication information.

[0078] The embodiments of the present disclosure combine the first indication information for indicating the target CSI-RS resource and / or the non-target CSI-RS resource and the second indication information for indicating the combination index to indicate the number of spatial domain basis vectors corresponding to the target CSI-RS resource, regardless of the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the combination corresponding to the combination index indicated by the second indication information, the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0, that is, the second indication information only needs to indicate the combination index corresponding to the number of spatial domain basis vectors corresponding to the target CSI-RS resource, greatly reducing the number of combinations corresponding to the combination index indicated by the second indication information, and saving the signaling overhead of the second indication information.

[0079] In the channel state information reporting method provided by the embodiments of the present disclosure, in response to the fact that multiple spatial domain basis vector combinations in at least one spatial domain basis vector combination include the same number of spatial domain basis vectors corresponding to the target CSI-RS resource and different numbers of spatial domain basis vectors corresponding to the non-target CSI-RS resource, at least one combination index indicated by the second indication information is determined based on a first rule.

[0080] The first rule can be a preconfigured rule, or a rule specified by a protocol, or a rule indicated by a network device, and the like. The embodiments of the present disclosure do not limit here.

[0081] For example, the CMR configured by the first configuration information includes four CSI-RS resources, the terminal selects the last three CSI-RS resources as target CSI-RS resources, and the number of spatial domain basis vectors corresponding to each target CSI-RS resource is determined as 2, and the first CSI-RS resource is a non-target CSI-RS resource. However, in the spatial domain basis vector combination of the four CSI-RS resources configured by the second configuration information, the number of spatial domain basis vectors corresponding to the last three CSI-RS resources in multiple spatial domain basis vector combinations is 2, and the number of spatial domain basis vectors corresponding to the first CSI-RS resource is 2 or 4 or 6, etc. For example: {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}. At this time, the terminal can determine the combination index indicated by the second indication information based on the first rule.

[0082] In some embodiments, the first rule includes:

[0083] any one of the combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0084] the combination index corresponding to the combination with smaller combination index value in the combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0085] the combination index corresponding to the combination with larger combination index value in the combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0086] the combination index corresponding to the spatial domain basis vector combination in which the number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource is smaller in the plurality of spatial domain basis vector combinations; or

[0087] the combination index corresponding to the spatial domain basis vector combination in which the number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource is larger in the plurality of spatial domain basis vector combinations.

[0088] In an exemplary embodiment, the index indicated by the second indication information is any one of the combination indexes corresponding to the plurality of spatial domain basis vector combinations.

[0089] For example, the plurality of spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, and the combination index indicated by the second indication information can be the combination index corresponding to any one of the combinations in {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}.

[0090] In another exemplary embodiment, the index indicated by the second indication information is the combination index corresponding to the combination with smaller combination index value in the combination indexes corresponding to the plurality of spatial domain basis vector combinations.

[0091] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {2, 2, 2, 2} is smaller, and thus the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 2, 2}.

[0092] In another example embodiment, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with a larger number of spatial domain basis vectors corresponding to the non-target CSI-RS resource among the multiple spatial domain basis vector combinations.

[0093] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {6, 2, 2, 2} is larger, and thus the combination index indicated by the second indication information can be the combination index corresponding to {6, 2, 2, 2}.

[0094] In another example embodiment, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with a smaller number of spatial domain basis vectors corresponding to the non-target CSI-RS resource among the multiple spatial domain basis vector combinations.

[0095] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {2, 2, 2, 2} is smaller, and thus the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 2, 2}.

[0096] In another example embodiment, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with a larger number of spatial domain basis vectors corresponding to the non-target CSI-RS resource among the multiple spatial domain basis vector combinations.

[0097] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {6, 2, 2, 2} is larger, and thus the combination index indicated by the second indication information can be the combination index corresponding to {6, 2, 2, 2}.

[0098] In some embodiments, when there is only one non-target CSI-RS resource, the specified non-target CSI-RS resource includes the one non-target CSI-RS resource.

[0099] In some embodiments, when there are multiple non-target CSI-RS resources, the specified non-target CSI-RS resources include:

[0100] all non-target CSI-RS resources; or

[0101] non-target CSI-RS resources corresponding to smaller CSI-RS resource indexes; or

[0102] non-target CSI-RS resources corresponding to larger CSI-RS resource indexes.

[0103] For example, the first configuration information configured by the terminal includes four CSI-RS resources, the terminal selects the first two CSI-RS resources as target CSI-RS resources, and the last two CSI-RS resources as non-target CSI-RS resources. The number of spatial domain basis vectors corresponding to the first two CSI-RS resources selected by the terminal is 2, and the number of spatial domain basis vectors corresponding to the last two CSI-RS resources in different spatial domain basis vector combinations is different, such as {2, 2, 2, 2}, {2, 2, 4, 2}, {2, 2, 4, 6}, {2, 2, 6, 6}, and the like.

[0104] wherein the third CSI-RS resource corresponds to a first resource index, and the fourth CSI-RS resource corresponds to a second resource index, and the first resource index is smaller than the second resource index.

[0105] In an implementation, if the specified non-target CSI-RS resources include all non-target CSI-RS resources, the specified non-target CSI-RS resources can be the third and fourth CSI-RS resources. At this time, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with smaller number of spatial domain basis vectors corresponding to the third and fourth CSI-RS resources. The spatial domain basis vector combination with smaller number of spatial domain basis vectors corresponding to the third and fourth CSI-RS resources is {2, 2, 2, 2}, so the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 2, 2}.

[0106] In another embodiment, if the specified non-target CSI-RS resource includes all non-target CSI-RS resources, the specified non-target CSI-RS resource can be the third and fourth CSI-RS resources. At this time, the index indicated by the second indication information corresponds to a combination index of a larger spatial domain basis vector combination corresponding to the third and fourth CSI-RS resources. Since the larger spatial domain basis vector combination corresponding to the third and fourth CSI-RS resources is {2, 2, 6, 6}, the combination index indicated by the second indication information can be a combination index corresponding to {2, 2, 6, 6}.

[0107] In another embodiment, if the specified non-target CSI-RS resource is a non-target CSI-RS resource corresponding to a smaller CSI-RS resource index, the specified non-target CSI-RS resource is the third CSI-RS resource. At this time, the index indicated by the second indication information corresponds to a combination index of a smaller spatial domain basis vector combination corresponding to the third CSI-RS resource. Since the smaller spatial domain basis vector combination corresponding to the third CSI-RS resource is {2, 2, 2, 2}, the combination index indicated by the second indication information can be a combination index corresponding to {2, 2, 2, 2}.

[0108] In another embodiment, if the specified non-target CSI-RS resource is a non-target CSI-RS resource corresponding to a smaller CSI-RS resource index, the specified non-target CSI-RS resource is the third CSI-RS resource. At this time, the index indicated by the second indication information corresponds to a combination index of a larger spatial domain basis vector combination corresponding to the third CSI-RS resource. Since the larger spatial domain basis vector combination corresponding to the third CSI-RS resource is {2, 2, 6, 6}, the combination index indicated by the second indication information can be a combination index corresponding to {2, 2, 6, 6}.

[0109] In another embodiment, if the specified non-target CSI-RS resource is a non-target CSI-RS resource corresponding to a larger CSI-RS resource index, the specified non-target CSI-RS resource is the fourth CSI-RS resource. At this time, the index indicated by the second indication information corresponds to a combination index of a smaller spatial domain basis vector combination corresponding to the fourth CSI-RS resource. Since the smaller spatial domain basis vector combination corresponding to the fourth CSI-RS resource is {2, 2, 2, 2}, the combination index indicated by the second indication information can be a combination index corresponding to {2, 2, 2, 2}.

[0110] In another implementation, if the non-target CSI-RS resource is designated as a non-target CSI-RS resource with a larger corresponding CSI-RS resource index, the non-target CSI-RS resource is designated as the fourth CSI-RS resource. At this time, the index indicated by the second indication information is a combination index corresponding to a larger spatial domain basis vector combination of the fourth CSI-RS resource. The larger spatial domain basis vector combination corresponding to the fourth CSI-RS resource is {2, 2, 6, 6}, and therefore the combination index indicated by the second indication information can be a combination index corresponding to {2, 2, 6, 6}.

[0111] In the embodiments of the present disclosure, when the number of spatial domain basis vectors corresponding to the target CSI-RS resources in the plurality of spatial domain basis vector combinations is the same, because the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0, the network device can know the number of spatial domain basis vectors corresponding to the target CSI-RS resource regardless of which combination index is indicated by the second indication information. The embodiments of the present disclosure can specify which combination index is indicated by the second indication information through the first rule, thereby clarifying the behavior of the terminal.

[0112] It should be noted that the smaller or larger referred to in the above embodiments not only means the smallest or the largest, but also means the second smallest, the third smallest, and the like. The combination index specified by the first rule can be determined according to the actual application scenario, and the behavior of the terminal is clarified.

[0113] In the channel state information reporting method provided by the embodiments of the present disclosure, the first indication information includes N bits, each bit of the N bits corresponds to one of the N CSI-RS resources, and different values of each bit are used to indicate that the corresponding one of the CSI-RS resources is a target CSI-RS resource or a non-target CSI-RS resource.

[0114] For example, when the bit value is a first value, it indicates that the CSI-RS resource is a target CSI-RS resource. When the bit value is a second value, it indicates that the CSI-RS resource is a non-target CSI-RS resource.

[0115] The first value is 0 and the second value is 1, or the first value is 1 and the second value is 0.

[0116] In the channel state information reporting method provided by the embodiments of the present disclosure, the first indication information and the second indication information are carried in the CSI.

[0117] The embodiments of the present disclosure can carry the first indication information and the second indication information in the CSI at the same time when the CSI is reported, thereby reducing signaling consumption.

[0118] In a channel state information reporting method provided in this embodiment, CSI includes: first information and second information.

[0119] The first information corresponds to an indication field of a fixed size, and the second information corresponds to an indication field whose size is determined based on the first information; the first indication information and / or the second indication information are carried in the first information.

[0120] In one exemplary embodiment, CSI may include two parts, namely part 1 and part 2. Part 1 may correspond to first information, and part 2 may correspond to second information.

[0121] In another exemplary embodiment, the size of the indication field corresponding to the first information can be a fixed value. For example, it can be preset or be the default size specified by the protocol.

[0122] In another exemplary embodiment, the size of CSI part 2 is determined based on the information in part 1. Here, the size of part 2 represents the number of bits occupied by CSI part 2, such as 8 bits or 16 bits.

[0123] For example, the size of CSI part 2 is determined based on the first indication information in part 1. If the first indication information in part 1 indicates a large number of target CSI-RS resources, then the size of part 2 will be larger. Conversely, if the first indication information in part 1 indicates a small number of target CSI-RS resources, then the size of part 2 will be smaller.

[0124] For example, the size of CSI part 2 is determined based on the second indication information in part 1. If the second indication information in part 1 indicates a large number of spatial basis vectors corresponding to the target CSI-RS resource, then the size of part 2 will be larger. Conversely, if the first indication information in part 1 indicates a small number of spatial basis vectors corresponding to the target CSI-RS resource, then the size of part 2 will be smaller.

[0125] In this embodiment of the disclosure, when the second indication information needs to indicate fewer combined indexes, the signaling overhead of CSI reporting can be reduced.

[0126] In the method for reporting channel state information provided in the embodiments of the present disclosure, the first information further includes at least one of the following: channel state information reference signal resource indicator (CRI); layer rank indication information; wideband channel quality indicator (CQI); number of non-zero wideband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication information.

[0127] In an example embodiment, the first information includes the number of non-zero wideband amplitude coefficients.

[0128] It can be understood that the number of non-zero wideband amplitude coefficients represents the number of wideband amplitude coefficient values that are non-zero.

[0129] In an example embodiment, the first information includes the non-zero coefficient number indication information.

[0130] It can be understood that the non-zero coefficient number indication information can indicate the number of coefficients whose coherence coefficients are non-zero.

[0131] In an example embodiment, the first information includes the non-zero coefficient position indication information.

[0132] It can be understood that the non-zero coefficient position indication information can indicate the positions of the coefficients whose coherence coefficients are non-zero.

[0133] In an example embodiment, the first information includes mode indication.

[0134] For example, the mode indication can be used to indicate a CSI feedback mode, a codebook mode, etc. The CSI feedback mode can include mode 1 and mode 2, mode 1 is single-TRP-based feedback, and mode 2 is multi-TRP-based feedback. Of course, the CSI feedback mode can also include other modes, which are not limited in the present disclosure. The codebook mode can include codebook structure 1 and codebook structure 2, codebook structure 1 is to feed back one piece of frequency domain basis (FD basis) information for all CSI-RS resources included in one CMR, and codebook structure 2 is to feed back one piece of frequency domain basis information for each CSI-RS resource included in one CMR. The codebook mode can also include other modes, which are not limited in the present disclosure.

[0135] In the method for reporting channel state information provided in the embodiments of the present disclosure, the second information includes precoding matrix indicator (PMI) information.

[0136] The PMI information at least includes at least one of the following: spatial domain basis vector parameter information; frequency domain basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; and amplitude coefficient information.

[0137] Based on the same concept, the present disclosure also provides a channel state information reporting method applied to a network device.

[0138] Figure 5 is a flow chart of a channel state information reporting method according to an exemplary embodiment, as shown in Figure 5 The channel state information reporting method is applied to a network device, and includes the following steps.

[0139] In step S41, first configuration information is sent to a terminal, the first configuration information being used to configure at least one CMR, the at least one CMR including N CSI-RS resources, N being an integer greater than 1.

[0140] The N CSI-RS resources correspond to N TRPs. That is, the network device indicates the CSI-RS resources corresponding to the N TRPs.

[0141] In the embodiments of the present disclosure, the network device sends first configuration information to the terminal, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N CSI-RS resources. Thus, the terminal can perform CSI measurement based on the configuration of the CMR in the coherent joint transmission scenario of multiple transmission and reception points, and improve the transmission performance of the multiple transmission and reception points.

[0142] Figure 6 is a flow chart of a channel state information reporting method according to an exemplary embodiment, as shown in Figure 6 includes the following steps.

[0143] In step S51, second configuration information is sent to a terminal, the second configuration information being used to configure at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination, the at least one spatial domain basis vector combination including the number of spatial domain basis vectors corresponding to each of the N CSI-RS resources.

[0144] The spatial domain basis vector can also be referred to as a beam.

[0145] In some embodiments, the spatial domain basis vector is related to at least one of N1, N2, O1, and O2. N1 is the number of first-dimension antenna ports, N2 is the number of second-dimension antenna ports, O1 is the first-dimension oversampling rate, and O2 is the second-dimension oversampling rate. The number of antenna ports can be understood as the number of ports of the CSI-RS.

[0146] For example, the selection of the spatial domain basis vectors can be understood as selecting a specified number of spatial domain basis vectors from the total number of antenna ports N1*N2 of each CSI-RS resource respectively.

[0147] In the embodiments of the present disclosure, the second configuration information is used to configure at least one combination of spatial domain basis vectors and the combination index corresponding to the at least one combination of spatial domain basis vectors, so that after the terminal determines the number of spatial domain basis vectors corresponding to each CSI-RS resource, the terminal can determine the combination index corresponding to the combination of spatial domain basis vectors corresponding to the number of spatial domain basis vectors corresponding to the N CSI-RS resources.

[0148] It should be noted that the embodiments shown in Figure 5 may be implemented alone, that is, the embodiments shown in Figure 5 are implemented alone, in which case the network device can send the first configuration information used to configure at least one CMR to the terminal, and whether to send the second configuration information used to configure at least one combination of spatial domain basis vectors and the combination index corresponding to the at least one combination of spatial domain basis vectors is not limited in the embodiments of the present disclosure. As Figure 5 shown in the embodiments, the embodiments can also be implemented in combination with other embodiments of the present disclosure, for example, in combination with the embodiments shown in Figure 6 ; that is, the network device sends the first configuration information used to configure at least one CMR to the terminal, and the network device also sends the second configuration information used to configure at least one combination of spatial domain basis vectors and the combination index corresponding to the at least one combination of spatial domain basis vectors to the terminal. In the embodiments of the present disclosure, the first configuration message and the second configuration message can be carried in different signaling or the same signaling, and the present disclosure does not limit this.

[0149] Figure 7 is a flowchart of a channel state information reporting method according to an exemplary embodiment, as Figure 7 shown, comprising the following steps.

[0150] In step S61, the first indication information and / or the second indication information sent by the terminal are received.

[0151] The first indication information is used to indicate the target CSI-RS resource and / or the non-target CSI-RS resource in the N CSI-RS resources, and the second indication information is used to indicate at least one combination index.

[0152] In some embodiments, the combination index indicated by the second indication information corresponds to the combination of spatial domain basis vectors used to determine the number of spatial domain basis vectors corresponding to the target CSI-RS resource.

[0153] It is worth noting that the terminal can implicitly determine the combination index corresponding to the combination of the at least one spatial domain basis vector, so the network device does not need to send the second configuration information to the terminal, and the terminal can determine the second indication information based on the first configuration information and the measurement of the N CSI-RS resources.

[0154] For example, when the terminal determines that the candidate values of the number of spatial domain basis vectors corresponding to each CSI-RS resource are 2, 4 and 6 based on the configuration information of the network device or the default rule, if the number of CSI-RS resources included in one CMR is 2, the combination of spatial domain basis vectors can include the following 9 combinations and corresponding combination indexes:

[0155] Combination 1: {2, 2}

[0156] Combination 2: {2, 4}

[0157] Combination 3: {2, 6}

[0158] Combination 4: {4, 2}

[0159] Combination 5: {4, 4}

[0160] Combination 6: {4, 6}

[0161] Combination 7: {6, 2}

[0162] Combination 8: {6, 4}

[0163] Combination 9: {6, 6}

[0164] Of course, the correspondence between the above combinations and combination indexes is not limited to the correspondence given in the embodiment.

[0165] In the channel state information reporting method provided in the embodiment of the disclosure, the first indication information and / or the second indication information sent by the terminal are received.

[0166] In the embodiment of the disclosure, by receiving the first indication information and / or the second indication information sent by the terminal, the target CSI-RS resource or the non-target CSI-RS resource selected by the terminal from the N CSI-RS resources, the number of spatial domain basis vectors corresponding to the target CSI-RS resource, and the combination index corresponding to the combination of the number of spatial domain basis vectors corresponding to the target CSI-RS resource can be determined, so that the network device can know the target CSI-RS resource selected by the terminal and the number of spatial domain basis vectors corresponding to the target CSI-RS resource, and improve the transmission performance of the multi-TRP based CJT.

[0167] In the channel state information reporting method provided in the embodiments of the present disclosure, the number of spatial domain basis vectors corresponding to the target CSI-RS resource in the combination corresponding to the combination index indicated by the second indication information is indicated by the number of spatial domain basis vectors corresponding to the target CSI-RS resource in at least one combination index indicated by the second indication information.

[0168] For example, the first configuration information configures a CMR containing 4 CSI-RS resources, the first indication information indicates that the first three CSI-RS resources in the 4 CSI-RS resources are target CSI-RS resources, and the last CSI-RS resource is a non-target CSI-RS resource, and the number of spatial domain basis vectors selected for each target CSI-RS resource is 2, 4, and 2, respectively. Then the combination corresponding to the combination index indicated by the second indication information is {2, 4, 2, 6}, that is, the number of spatial domain basis vectors corresponding to the target CSI-RS resource is 2, 4, and 2, respectively.

[0169] The combination {2, 4, 2, 6} corresponding to the combination index indicated by the second indication information is a combination configured by the network device through the second configuration information. If the first configuration information configures a CMR containing N CSI-RS resources, the combination configured by the second configuration information will include the number of spatial domain basis vectors that the N CSI-RS resources may correspond to. Whether the terminal selects all the N CSI-RS resources as target CSI-RS resources or not, the combination corresponding to the combination index indicated by the second indication information will include the number of spatial domain basis vectors corresponding to the N CSI-RS resources.

[0170] In the channel state information reporting method provided in the embodiments of the present disclosure, the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0.

[0171] It is worth noting that no matter what the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the combination configured by the second configuration information for the N CSI-RS resources is or what the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the combination corresponding to the combination index indicated by the second indication information is, the actual number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0.

[0172] In the above embodiment, if the terminal selects part of the CSI-RS resources configured by the first configuration information (also referred to as target CSI-RS resources), and another part of the CSI-RS resources is not selected by the terminal (also referred to as non-target CSI-RS resources), if the number of the spatial domain basis vectors corresponding to each CSI-RS resource contained in the CMR is determined only according to the second indication information, the network device needs to consider that the number of the spatial domain basis vectors corresponding to the part of the CSI-RS resources not selected by the terminal is 0, and therefore, the network device needs to configure the terminal with all combinations of the spatial domain basis vector combinations corresponding to all the CSI-RS resources, wherein the number of the spatial domain basis vectors corresponding to each CSI-RS resource contains 0 and non-0 (such as 2, 4, 6), which causes a large RRC signaling overhead and a large number of combinations.

[0173] For example, if the number of the non-0 basis vectors only contains 2, the number of the spatial domain basis vectors selected by the terminal for each target CSI-RS resource is 2, and if the number of the spatial domain basis vectors corresponding to the non-target CSI-RS resources is considered to be 0, the number of bits required for the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to the following 15 combinations:

[0174] {2, 2, 2, 2}, {0, 2, 2, 2}, {0, 0, 2, 2}, {0, 0, 0, 2}, {2, 0, 2, 2}, {2, 0, 0, 2}, {2, 0, 0, 0}, {2, 2, 0, 2}, {2, 2, 0, 0}, {2, 2, 2, 0}, {0, 2, 0, 2}, {0, 2, 2, 0}, {0, 0, 2, 0}, {0, 0, 2, 2}, {0, 2, 0, 0}.

[0175] However, if the second indication information is combined with the first indication information, since the spatial domain basis vectors corresponding to the non-target CSI-RS resources indicated by the first indication information are all 0, it is not necessary to consider the number of the spatial domain basis vectors corresponding to the non-target CSI-RS resources in the spatial domain basis vector combination corresponding to the combination index indicated by the second indication information, and therefore, the spatial domain basis vector combination only needs to be {2, 2, 2, 2} to determine the number of the spatial domain basis vectors corresponding to the target CSI-RS resources. That is, if the first indication information indicates the target CSI-RS resources and the non-target CSI-RS resources, and the spatial domain basis vector combination corresponding to the combination index indicated by the second indication information is {2, 2, 2, 2}, the base station can determine that the number of the spatial domain basis vectors corresponding to the target CSI-RS resources is 2, and the number of the spatial domain basis vectors corresponding to the non-target CSI-RS resources is 0.

[0176] For example, if the number of non-zero basis vectors includes 2 and 4, the number of spatial domain basis vectors selected by the terminal for each target CSI-RS resource is 2 or 4, and if the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0, the bit number required by the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to the 81 combinations including 0, 2 and 4:

[0177] {2, 2, 4, 4}, {0, 2, 4, 4}, {0, 0, 4, 4}, {2, 2, 4, 2}, {2, 0, 4, 4}, {2, 0, 4, 2}, {4, 2, 0, 0}, {4, 2, 0, 2}, {4, 2, 0, 0}, {4, 2, 2, 0}, {4, 2, 0, 2}...

[0178] However, if the second indication information is combined with the first indication information, since the spatial domain basis vectors corresponding to the non-target CSI-RS resource indicated by the first indication information are all 0, it is not necessary to consider the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the spatial domain basis vector combination corresponding to the combination index indicated by the second indication information, and then the spatial domain basis vector combination indicated by the second indication information only needs to indicate the 16 combinations including 2 and 4, greatly reducing the number of combinations corresponding to the combination index indicated by the second indication information.

[0179] The embodiments of the present disclosure combine the first indication information for indicating the target CSI-RS resource and / or the non-target CSI-RS resource and the second indication information for indicating the combination index to indicate the number of spatial domain basis vectors corresponding to the target CSI-RS resource, regardless of the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource in the combination corresponding to the combination index indicated by the second indication information, the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0, that is to say, the second indication information only needs to indicate the combination index corresponding to the number of spatial domain basis vectors corresponding to the target CSI-RS resource, greatly reducing the number of combinations corresponding to the combination index indicated by the second indication information, and saving the signaling overhead of the second indication information.

[0180] In the channel state information reporting method provided by the embodiments of the present disclosure, in response to the fact that multiple spatial domain basis vector combinations in at least one spatial domain basis vector combination include the same number of spatial domain basis vectors corresponding to the target CSI-RS resource and different numbers of spatial domain basis vectors corresponding to the non-target CSI-RS resource, at least one combination index indicated by the second indication information is determined based on a first rule.

[0181] The first rule can be a preconfigured rule, or the first rule can be a rule specified by a protocol, or the first rule can be a rule indicated by a network device, and the like. The embodiments of the present disclosure do not limit here.

[0182] For example, the CMR configured by the first configuration information includes four CSI-RS resources, the terminal selects the last three CSI-RS resources as target CSI-RS resources, and the number of spatial domain basis vectors corresponding to each target CSI-RS resource is determined as 2, and the first CSI-RS resource is a non-target CSI-RS resource. However, in the spatial domain basis vector combination of the four CSI-RS resources configured by the second configuration information, the number of spatial domain basis vectors corresponding to the last three CSI-RS resources in multiple spatial domain basis vector combinations is 2, and the number of spatial domain basis vectors corresponding to the first CSI-RS resource is 2 or 4 or 6, etc. For example: {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}. At this time, the terminal can determine the combination index indicated by the second indication information based on the first rule.

[0183] In some embodiments, the first rule includes:

[0184] any one of the combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0185] the combination index corresponding to the combination with smaller combination index value in the combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0186] the combination index corresponding to the combination with larger combination index value in the combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0187] the combination index corresponding to the spatial domain basis vector combination in which the number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource is smaller in the plurality of spatial domain basis vector combinations; or

[0188] the combination index corresponding to the spatial domain basis vector combination in which the number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource is larger in the plurality of spatial domain basis vector combinations.

[0189] In an exemplary embodiment, the index indicated by the second indication information is any one of the combination indexes corresponding to the plurality of spatial domain basis vector combinations.

[0190] For example, the plurality of spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, and the combination index indicated by the second indication information can be the combination index corresponding to any one of the combinations in {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}.

[0191] In another exemplary embodiment, the index indicated by the second indication information is the combination index corresponding to the combination with smaller combination index value in the combination indexes corresponding to the plurality of spatial domain basis vector combinations.

[0192] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {2, 2, 2, 2} is smaller, and thus the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 2, 2}.

[0193] In another example embodiment, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with a larger number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource.

[0194] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {6, 2, 2, 2} is larger, and thus the combination index indicated by the second indication information can be the combination index corresponding to {6, 2, 2, 2}.

[0195] In another example embodiment, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with a smaller number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource.

[0196] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {6, 2, 2, 2} is larger, and thus the combination index indicated by the second indication information can be the combination index corresponding to {6, 2, 2, 2}.

[0197] In another example embodiment, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with a larger number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource.

[0198] For example, the multiple spatial domain basis vector combinations are {2, 2, 2, 2}, {4, 2, 2, 2}, {6, 2, 2, 2}, wherein the combination index corresponding to {6, 2, 2, 2} is larger, and thus the combination index indicated by the second indication information can be the combination index corresponding to {6, 2, 2, 2}.

[0199] In some embodiments, when there is only one non-target CSI-RS resource, the specified non-target CSI-RS resource includes the one non-target CSI-RS resource.

[0200] In some embodiments, when there are multiple non-target CSI-RS resources, the specified non-target CSI-RS resources include:

[0201] all non-target CSI-RS resources; or

[0202] non-target CSI-RS resources corresponding to smaller CSI-RS resource indexes; or

[0203] non-target CSI-RS resources corresponding to larger CSI-RS resource indexes.

[0204] For example, the first configuration information configured by the terminal includes four CSI-RS resources, the terminal selects the first two CSI-RS resources as target CSI-RS resources, and the last two CSI-RS resources as non-target CSI-RS resources. The number of spatial domain basis vectors corresponding to the first two CSI-RS resources selected by the terminal is 2, and the number of spatial domain basis vectors corresponding to the last two CSI-RS resources in different spatial domain basis vector combinations is different, such as {2, 2, 2, 2}, {2, 2, 4, 2}, {2, 2, 4, 6}, {2, 2, 6, 6}, and the like.

[0205] In the example, the CSI-RS resource corresponding to the third CSI-RS resource index is the first resource, and the CSI-RS resource corresponding to the fourth CSI-RS resource index is the second resource. The first resource index is smaller than the second resource index.

[0206] In an implementation, if the specified non-target CSI-RS resources include all non-target CSI-RS resources, the specified non-target CSI-RS resources can be the third and fourth CSI-RS resources. At this time, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with smaller number of spatial domain basis vectors corresponding to the third and fourth CSI-RS resources. The spatial domain basis vector combination with smaller number of spatial domain basis vectors corresponding to the third and fourth CSI-RS resources is {2, 2, 2, 2}, so the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 2, 2}.

[0207] In another embodiment, if the specified non-target CSI-RS resource includes all non-target CSI-RS resources, the specified non-target CSI-RS resource can be the third and fourth CSI-RS resources. At this time, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with more spatial domain basis vectors corresponding to the third and fourth CSI-RS resources. Since the spatial domain basis vector combination with more spatial domain basis vectors corresponding to the third and fourth CSI-RS resources is {2, 2, 6, 6}, the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 6, 6}.

[0208] In another embodiment, if the specified non-target CSI-RS resource is the non-target CSI-RS resource corresponding to a smaller CSI-RS resource index, the specified non-target CSI-RS resource is the third CSI-RS resource. At this time, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with less spatial domain basis vectors corresponding to the third CSI-RS resource. Since the spatial domain basis vector combination with less spatial domain basis vectors corresponding to the third CSI-RS resource is {2, 2, 2, 2}, the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 2, 2}.

[0209] In another embodiment, if the specified non-target CSI-RS resource is the non-target CSI-RS resource corresponding to a smaller CSI-RS resource index, the specified non-target CSI-RS resource is the third CSI-RS resource. At this time, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with more spatial domain basis vectors corresponding to the third CSI-RS resource. Since the spatial domain basis vector combination with more spatial domain basis vectors corresponding to the third CSI-RS resource is {2, 2, 6, 6}, the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 6, 6}.

[0210] In another embodiment, if the specified non-target CSI-RS resource is the non-target CSI-RS resource corresponding to a smaller CSI-RS resource index, the specified non-target CSI-RS resource is the third CSI-RS resource. At this time, the index indicated by the second indication information is the combination index corresponding to the spatial domain basis vector combination with more spatial domain basis vectors corresponding to the third CSI-RS resource. Since the spatial domain basis vector combination with more spatial domain basis vectors corresponding to the third CSI-RS resource is {2, 2, 6, 6}, the combination index indicated by the second indication information can be the combination index corresponding to {2, 2, 6, 6}.

[0211] In another implementation, if the non-target CSI-RS resource is designated as a non-target CSI-RS resource with a larger corresponding CSI-RS resource index, the non-target CSI-RS resource is designated as the fourth CSI-RS resource. At this time, the index indicated by the second indication information is a combination index corresponding to a larger spatial domain basis vector combination of the fourth CSI-RS resource. The larger spatial domain basis vector combination corresponding to the fourth CSI-RS resource is {2, 2, 6, 6}, and therefore the combination index indicated by the second indication information can be a combination index corresponding to {2, 2, 6, 6}.

[0212] In the embodiments of the present disclosure, when the number of spatial domain basis vectors corresponding to the target CSI-RS resources in the multiple spatial domain basis vector combinations is the same, because the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0, the network device can know the number of spatial domain basis vectors corresponding to the target CSI-RS resource regardless of which combination index is indicated by the second indication information. The embodiments of the present disclosure can specify which combination index is indicated by the second indication information through the first rule, thereby clarifying the behavior of the terminal.

[0213] It should be noted that the smaller or larger referred to in the above embodiments not only means the smallest or the largest, but also means the second smallest, the third smallest, and the like. The combination index specified by the first rule can be determined according to the actual application scenario, and the behavior of the terminal is clarified.

[0214] In the channel state information reporting method provided by the embodiments of the present disclosure, the first indication information includes N bits, each bit of the N bits corresponds to one of the N CSI-RS resources, and different values of each bit are used to indicate that the corresponding one of the CSI-RS resources is a target CSI-RS resource or a non-target CSI-RS resource.

[0215] For example, when the bit value is a first value, it indicates that the CSI-RS resource is a target CSI-RS resource. When the bit value is a second value, it indicates that the CSI-RS resource is a non-target CSI-RS resource.

[0216] The first value is 0 and the second value is 1, or the first value is 1 and the second value is 0.

[0217] In the channel state information reporting method provided by the embodiments of the present disclosure, the first indication information and the second indication information are carried in the CSI.

[0218] The embodiments of the present disclosure carry the first indication information and the second indication information in the CSI, so that the first indication information and the second indication information can be reported at the same time when the CSI is reported, thereby reducing signaling consumption.

[0219] In a CSI reporting method provided by an embodiment of the present disclosure, the CSI includes first information and second information.

[0220] The first information corresponds to an indication field with a fixed size, and the size of the indication field is determined based on the first information; and the first indication information and / or the second indication information is carried in the first information.

[0221] In an exemplary embodiment, the CSI can include two parts, i.e., part 1 and part 2. The part 1 can correspond to the first information, and the part 2 can correspond to the second information.

[0222] In another exemplary embodiment, the size of the indication field corresponding to the first information can be a fixed value. For example, it can be a pre-set value, or a default size specified by a protocol, etc.

[0223] In another exemplary embodiment, the size of the part 2 of the CSI is determined based on the information in the part 1. The size of the part 2 represents the size of the number of bits occupied by the part 2 of the CSI, such as 8 bits or 16 bits, etc.

[0224] For example, the size of the part 2 of the CSI is determined based on the first indication information in the part 1. If the target CSI-RS resource indicated by the first indication information in the part 1 is more, the size of the part 2 will be larger. Conversely, if the target CSI-RS resource indicated by the first indication information in the part 1 is less, the size of the part 2 will be smaller.

[0225] For another example, the size of the part 2 of the CSI is determined based on the second indication information in the part 1. If the number of spatial domain basis vectors corresponding to the target CSI-RS resource indicated by the second indication information in the part 1 is more, the size of the part 2 will be larger. Conversely, if the number of spatial domain basis vectors corresponding to the target CSI-RS resource indicated by the first indication information in the part 1 is less, the size of the part 2 will be smaller.

[0226] In an embodiment of the present disclosure, when the combination index indicated by the second indication information is less, the signaling overhead of the CSI reporting can be reduced.

[0227] In the method for reporting channel state information provided in the embodiments of the present disclosure, the first information further includes at least one of the following: channel state information reference signal resource indicator (CRI); layer rank indication information; wideband channel quality indicator (CQI); number of non-zero wideband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication information.

[0228] In an example embodiment, the first information includes the number of non-zero wideband amplitude coefficients.

[0229] It can be understood that the number of non-zero wideband amplitude coefficients represents the number of wideband amplitude coefficient values that are non-zero.

[0230] In an example embodiment, the first information includes the non-zero coefficient number indication information.

[0231] It can be understood that the non-zero coefficient number indication information can indicate the number of coefficients whose coherence coefficients are non-zero.

[0232] In an example embodiment, the first information includes the non-zero coefficient position indication information.

[0233] It can be understood that the non-zero coefficient position indication information can indicate the positions of the coefficients whose coherence coefficients are non-zero.

[0234] In an example embodiment, the first information includes mode indication.

[0235] For example, the mode indication can be used to indicate a CSI feedback mode, a codebook mode, etc. The CSI feedback mode can include mode 1 and mode 2, mode 1 is single-TRP-based feedback, and mode 2 is multi-TRP-based feedback. Of course, the CSI feedback mode can also include other modes, which are not limited in the present disclosure. The codebook mode can include codebook structure 1 and codebook structure 2, codebook structure 1 is to feed back one piece of frequency domain basis (FD basis) information for all CSI-RS resources included in one CMR, and codebook structure 2 is to feed back one piece of frequency domain basis information for each CSI-RS resource included in one CMR. The codebook mode can also include other modes, which are not limited in the present disclosure.

[0236] In the method for reporting channel state information provided in the embodiments of the present disclosure, the second information includes precoding matrix indicator (PMI) information.

[0237] The PMI information at least includes at least one of: spatial domain basis vector parameter information; frequency domain basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; and amplitude coefficient information.

[0238] It should be noted that those skilled in the art can understand that the various embodiments / embodiments related to the above-mentioned embodiments of the present disclosure can be used together or independently. Whether it is used alone or together with the foregoing embodiments, the implementation principle is similar. In the present disclosure, some embodiments are described as embodiments used together. Of course, those skilled in the art can understand that such example descriptions are not a limitation of the embodiments of the present disclosure.

[0239] Based on the same concept, the present disclosure also provides a channel state information reporting device.

[0240] It can be understood that the channel state information reporting device provided by the embodiments of the present disclosure comprises the corresponding hardware structure and / or software modules for executing each function in order to realize the above-mentioned functions. In combination with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

[0241] Figure 8 is a block diagram of a channel state information reporting device according to an exemplary embodiment. Referring to Figure 8 The device comprises a receiving module 101. Wherein, the channel state information reporting device 100 is applied to a terminal.

[0242] The receiving module 101 is configured to receive first configuration information sent by a network device, the first configuration information being used for configuring at least one channel measurement resource CMR, the at least one CMR comprising N channel state information reference signal CSI-RS resources, N being an integer greater than 1.

[0243] In an embodiment, the receiving module 101 is further configured to receive second configuration information sent by the network device, the second configuration information being used for configuring at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination, the at least one spatial domain basis vector combination comprising a number of spatial domain basis vectors corresponding to each of the N CSI-RS resources.

[0244] In one embodiment, the channel state information reporting device 100 further includes a processing module 102. The processing module 102 is configured to measure the N CSI-RS resources based on first configuration information and / or second configuration information, and determine first indication information and / or second indication information;

[0245] The first indication information is used to indicate the target CSI-RS resource and / or non-target CSI-RS resource among the N CSI-RS resources, and the second indication information is used to indicate at least one combined index.

[0246] In one embodiment, the channel state information reporting device 100 further includes a sending module 103. The sending module 103 is configured to send first indication information and / or second indication information to the network device.

[0247] In one embodiment, the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to at least one combined index indicated by the second indication information.

[0248] In one embodiment, the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0.

[0249] In one embodiment, in response to the existence of multiple spatial basis vector combinations containing the same number of spatial basis vectors corresponding to target CSI-RS resources and different numbers of spatial basis vectors corresponding to non-target CSI-RS resources, the at least one combination index indicated by the second indication information is determined based on the first rule.

[0250] In one implementation, the first rule includes:

[0251] Any one of the multiple combined indices corresponding to multiple spatial basis vector combinations; or

[0252] The combination index corresponding to the smaller combination index value among multiple combination indices corresponding to multiple spatial basis vector combinations; or

[0253] The combination index corresponding to the larger combination index value among multiple combination indices corresponding to multiple spatial basis vector combinations; or

[0254] Among multiple spatial basis vector combinations, the combination index corresponding to the spatial basis vector combination with the smaller number of spatial basis vectors corresponding to the non-target CSI-RS resource is specified; or

[0255] Among the multiple spatial basis vector combinations, the combination index corresponding to the spatial basis vector combination with the larger number of spatial basis vectors corresponding to the non-target CSI-RS resource is specified.

[0256] In an implementation, the non-target CSI-RS resources are specified as follows:

[0257] all non-target CSI-RS resources; or

[0258] non-target CSI-RS resources corresponding to CSI-RS resource indexes smaller than a threshold; or

[0259] non-target CSI-RS resources corresponding to CSI-RS resource indexes larger than a threshold.

[0260] In an implementation, the first indication information includes N bits, each bit of the N bits corresponding to one of the N CSI-RS resources, and different values of each bit are used to indicate that the corresponding one of the CSI-RS resources is a target CSI-RS resource or a non-target CSI-RS resource.

[0261] In an implementation, the first indication information and the second indication information are carried in channel state information (CSI).

[0262] In an implementation, the CSI includes: first information and second information, the first information corresponding to an indication field of a fixed size, and the size of the indication field of the second information being determined based on the first information.

[0263] The first indication information and / or the second indication information are carried in the first information.

[0264] In an implementation, the first information further includes at least one of the following information:

[0265] channel state information reference signal resource indication (CRI);

[0266] layer rank indication information;

[0267] wideband channel quality information (CQI);

[0268] number of non-zero wideband amplitude coefficients;

[0269] non-zero coefficient number indication information;

[0270] non-zero coefficient position indication information;

[0271] mode indication information.

[0272] In an implementation, the second information includes precoding matrix indication (PMI) information.

[0273] The PMI information includes at least one of the following:

[0274] spatial domain basis vector parameter information;

[0275] frequency domain basis vector parameter information;

[0276] non-zero coefficient position indication information;

[0277] phase coefficient information;

[0278] amplitude coefficient information.

[0279] Figure 9 is a channel state information reporting device block diagram according to an exemplary embodiment. Referring to Figure 9 , the device includes a sending module 201. Wherein, the channel state information reporting device 200 is applied to a network device.

[0280] The sending module 201 is configured to send first configuration information to the terminal, the first configuration information is used for configuring at least one channel measurement resource CMR, the at least one CMR includes N channel state information reference signal CSI-RS resources, N is an integer greater than 1.

[0281] In an embodiment, the sending module 201 is further configured to send second configuration information to the terminal, the second configuration information is used for configuring at least one spatial domain basis vector combination and a combination index corresponding to the at least one spatial domain basis vector combination, the at least one spatial domain basis vector combination includes the number of spatial domain basis vectors corresponding to each of the N CSI-RS resources.

[0282] In an embodiment, the channel state information reporting device 200 further includes a receiving module 202. The receiving module 202 is used for receiving the first indication information and / or the second indication information sent by the terminal;

[0283] Wherein, the first indication information is used for indicating the target CSI-RS resource and / or the non-target CSI-RS resource in the N CSI-RS resources, and the second indication information is used for indicating at least one of the combination indexes.

[0284] In an embodiment, the number of spatial domain basis vectors corresponding to the target CSI-RS resource is the number of spatial domain basis vectors corresponding to the target CSI-RS resource in the spatial domain basis vector combination corresponding to the at least one combination index indicated by the second indication information.

[0285] In an embodiment, the number of spatial domain basis vectors corresponding to the non-target CSI-RS resource is 0.

[0286] In an embodiment, if there are multiple spatial domain basis vector combinations in the at least one spatial domain basis vector combination, the number of spatial domain basis vectors corresponding to the target CSI-RS resources included in the multiple spatial domain basis vector combinations is the same, and the number of spatial domain basis vectors corresponding to the non-target CSI-RS resources included in the multiple spatial domain basis vector combinations is different, the at least one combination index indicated by the second indication information is determined based on a first rule.

[0287] In an embodiment, the first rule comprises:

[0288] any one of a plurality of combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0289] a combination index corresponding to a combination index value smaller one of the plurality of combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0290] a combination index corresponding to a combination index value larger one of the plurality of combination indexes corresponding to the plurality of spatial domain basis vector combinations; or

[0291] a combination index corresponding to a spatial domain basis vector combination with a smaller number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource among the plurality of spatial domain basis vector combinations; or

[0292] a combination index corresponding to a spatial domain basis vector combination with a larger number of spatial domain basis vectors corresponding to the specified non-target CSI-RS resource among the plurality of spatial domain basis vector combinations.

[0293] In an embodiment, the specified non-target CSI-RS resource comprises:

[0294] all non-target CSI-RS resources; or

[0295] a non-target CSI-RS resource corresponding to a smaller CSI-RS resource index; or

[0296] a non-target CSI-RS resource corresponding to a larger CSI-RS resource index.

[0297] In an embodiment, the first indication information comprises N bits, each bit of the N bits corresponding to one of the N CSI-RS resources, and different values of each bit are used to indicate that the corresponding one of the CSI-RS resources is a target CSI-RS resource or a non-target CSI-RS resource.

[0298] In an embodiment, the first indication information and / or the second indication information is carried in channel state information (CSI).

[0299] In an embodiment, the CSI comprises: first information and second information, the first information corresponding to an indication field with a fixed size, and the size of the indication field is determined based on the first information.

[0300] The first indication information and the second indication information are carried in the first information.

[0301] In an embodiment, the first information further comprises at least one of the following information:

[0302] a channel state information reference signal resource indication (CRI);

[0303] layer rank indication information;

[0304] wideband channel quality information (CQI);

[0305] number of non-zero wideband amplitude coefficients;

[0306] non-zero coefficient number indication information;

[0307] non-zero coefficient position indication information;

[0308] mode indication information.

[0309] In an implementation form of the apparatus, the second information comprises precoding matrix indicator (PMI) information.

[0310] The PMI information comprises at least one of:

[0311] spatial domain basis vector parameter information;

[0312] frequency domain basis vector parameter information;

[0313] non-zero coefficient position indication information;

[0314] phase coefficient information;

[0315] amplitude coefficient information.

[0316] It should be noted that the apparatus 100 and 200 can further comprise other modules, for example a communication module. As to the apparatus in the above embodiments, the specific manners how the various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0317] It should be noted that the apparatus 100 and 200 can further comprise other modules, for example a communication module. As to the apparatus in the above embodiments, the specific manners how the various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0318] Figure 10 is a block diagram of a channel state information reporting apparatus according to an example embodiment. For example, the apparatus 300 can be a mobile phone, computer, digital broadcast terminal, message communicator, game console, tablet device, medical device, fitness device, personal digital assistant, etc.

[0319] Referring to Figure 10 , the apparatus 300 can include one or more of the following components: a processing component 302, a memory 304, a power supply component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0320] The processing component 302 generally controls the overall operations of the device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 can include one or more processors 320 to execute instructions delivered from the memory 304 to complete all or part of the steps of the methods described above. In addition, the processing component 302 can include one or more modules to facilitate the interaction between the processing component 302 and other components. For example, the processing component 302 can include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0321] The memory 304 is configured to store various types of data to support operations of the device 300. Examples of these data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0322] The power component 306 provides power to the various components of the device 300. The power component 306 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.

[0323] The multimedia component 308 includes a screen providing an output interface between the device 300 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensors can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 308 includes a front camera and / or a back camera. The front camera and / or the back camera can receive external multimedia data when the device 300 is in an operation mode, such as a shooting mode or a video mode. Each of the front and back cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0324] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive an external audio signal when the device 300 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 also includes a speaker for outputting audio signals.

[0325] The I / O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which can include a keypad, a click wheel, buttons, and so on. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0326] The sensor component 314 includes one or more sensors for providing status assessments of various aspects of the device 300. For example, the sensor component 314 can detect an open / closed position of the device 300, relative positioning of components, such as a display and a keypad of the device 300, a change of position of the device 300 or a component of the device 300, presence or absence of user contact with the device 300, changes in orientation or acceleration / deceleration

[0327] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a corresponding communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 316 receives broadcast signals or broadcast-related information from external broadcast management systems via a broadcast channel. In an example embodiment, the communication component 316 also includes a Near Field Communication (NFC) module to promote short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) techniques, infrared data association (IrDA) techniques, ultra-wideband (UWB) techniques, Bluetooth (BT) techniques, and other techniques.

[0328] In exemplary embodiments, the apparatus 300 can be implemented using one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic devices, to perform the above methods.

[0329] In exemplary embodiments, a non-transitory computer readable storage medium including instructions, such as the memory 304 including instructions, is also provided, which can be executed by the processor 320 of the apparatus 300 to complete the above methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0330] Figure 11 is a block diagram of a channel state information reporting apparatus according to an exemplary embodiment. For example, the apparatus 400 can be provided as a network device. Referring to Figure 11 , the apparatus 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by a memory 432, for storing instructions, such as application programs, executable by the processing component 422. The application programs stored in the memory 432 can include one or more than one module each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute the instructions to perform the above methods.

[0331] The apparatus 400 can also include a power supply component 426 configured to perform power management of the apparatus 400, a wired or wireless network interface 450 configured to connect the apparatus 400 to a network, and an input output (I / O) interface 458. The apparatus 400 can operate based on an operating system stored in the memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0332] In exemplary embodiments, a non-transitory computer readable storage medium including instructions, such as the memory 432 including instructions, is also provided, which can be executed by the processing component 422 of the apparatus 400 to complete the above methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0333] It should be further understood that the term "multiple" in the present disclosure refers to two or more, and other quantifiers are similar thereto. The term "and / or" describes an associated relationship between associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0334] It should be further understood that the meanings of the words "in response to", "if" and the like in the present disclosure depend on the context and the actual use scenario, such as the word "in response to" used herein can be interpreted as "when" or "when" or "if" or "if".

[0335] It should be further understood that the terms "first", "second" and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions "first", "second" and the like can be used interchangeably. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0336] It should be further understood that although the operations are described in a specific order in the accompanying drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order or in a serial order, or requiring all the shown operations to be performed to obtain the desired results. In a specific environment, multitasking and parallel processing can be advantageous.

[0337] Other embodiments of the present disclosure will be apparent to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses or adaptive changes of the present disclosure following the general principles of the present disclosure and including common knowledge or conventional technical means in the art not disclosed by the present disclosure.

[0338] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A method for reporting channel state information, characterized in that, Applied to a terminal, the method includes: The network device receives first configuration information, which is used to configure at least one channel measurement resource (CMR). The at least one CMR includes N channel state information reference signal (CSI-RS) resources, where N is an integer greater than 1. Send a first indication message and a second indication message to the network device; wherein, the first indication message is used to indicate the target CSI-RS resource and the non-target CSI-RS resource among the N CSI-RS resources, and the second indication message is used to indicate at least one combined index; the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the combination of spatial basis vectors corresponding to the at least one combined index indicated by the second indication message; the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0.

2. The method according to claim 1, characterized in that, The method further includes: The system receives second configuration information sent by a network device. The second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to the at least one spatial basis vector combination. The at least one spatial basis vector combination includes the number of spatial basis vectors corresponding to each of the N CSI-RS resources.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Based on the first configuration information and / or the second configuration information, the N CSI-RS resources are measured, and the first indication information and / or the second indication information are determined.

4. The method according to claim 1 or 2, characterized in that, In response to the existence of multiple spatial basis vector combinations in the at least one spatial basis vector combination containing the same number of spatial basis vectors corresponding to the target CSI-RS resource, and containing different numbers of spatial basis vectors corresponding to the non-target CSI-RS resources, the at least one combination index indicated by the second indication information is determined based on the first rule.

5. The method according to claim 4, characterized in that, The first rule includes: Any one of the multiple combined indices corresponding to the multiple spatial basis vector combinations; or The combination index corresponding to the smaller combination index value among the multiple combination indices corresponding to the multiple spatial basis vector combinations; or The combination index corresponding to the larger combination index value among the multiple combination indices corresponding to the multiple combinations of spatial basis vectors; or Among the multiple spatial basis vector combinations, the combination index corresponding to the spatial basis vector combination with the smaller number of spatial basis vectors corresponding to the non-target CSI-RS resource is specified; or Among the multiple spatial basis vector combinations, the combination index corresponding to the spatial basis vector combination with the larger number of spatial basis vectors corresponding to the non-target CSI-RS resource is specified.

6. The method according to claim 5, characterized in that, The designated non-target CSI-RS resources include: All non-target CSI-RS resources; or The corresponding non-target CSI-RS resource with a smaller CSI-RS resource index; or Non-target CSI-RS resources with larger corresponding CSI-RS resource indexes.

7. The method according to claim 1, characterized in that, The first indication information includes N bits, each of which corresponds to one of the N CSI-RS resources. Different values ​​of each bit are used to indicate whether the corresponding CSI-RS resource is a target CSI-RS resource or a non-target CSI-RS resource.

8. The method according to claim 1, characterized in that, The first indication information and the second indication information are carried in the channel state information (CSI).

9. The method according to claim 8, characterized in that, The CSI includes: first information and second information, wherein the first information corresponds to an indication field of fixed size, and the size of the indication field corresponding to the second information is determined based on the first information; The first indication information and / or the second indication information are carried in the first information.

10. The method according to claim 9, characterized in that, The first information also includes at least one of the following: Channel State Information Reference Signal Resource Indicator (CRI); Layer rank indication information; Broadband Channel Quality Information (CQI); Number of non-zero bandwidth amplitude coefficients; Information indicating the number of non-zero coefficients; Non-zero coefficient position indication information; Pattern indication information.

11. The method according to claim 9, characterized in that, The second information includes precoding matrix indication PMI information; The PMI information includes at least one of the following: Spatial basis vector parameter information; Frequency domain basis vector parameter information; Non-zero coefficient position indication information; Phase coefficient information; Amplitude coefficient information.

12. A method for reporting channel state information, characterized in that, Applied to network devices, the method includes: Send first configuration information to the terminal. The first configuration information is used to configure at least one channel measurement resource (CMR). The at least one CMR includes N channel state information reference signal (CSI-RS) resources, where N is an integer greater than 1. The system receives first indication information and / or second indication information sent by the terminal; wherein the first indication information is used to indicate target CSI-RS resources and non-target CSI-RS resources among the N CSI-RS resources, and the second indication information is used to indicate at least one combined index; the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to the at least one combined index indicated by the second indication information; and the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0.

13. The method according to claim 12, characterized in that, The method further includes: Send second configuration information to the terminal. The second configuration information is used to configure at least one spatial basis vector combination and the combination index corresponding to the at least one spatial basis vector combination. The at least one spatial basis vector combination includes the number of spatial basis vectors corresponding to each of the N CSI-RS resources.

14. The method according to claim 12, characterized in that, If multiple spatial basis vector combinations contain the same number of spatial basis vectors corresponding to the target CSI-RS resource, and contain different numbers of spatial basis vectors corresponding to the non-target CSI-RS resource, the at least one combination index indicated by the second indication information is determined based on the first rule.

15. The method according to claim 14, characterized in that, The first rule includes: Any one of the multiple combined indices corresponding to the multiple spatial basis vector combinations; or The combination index corresponding to the smaller combination index value among the multiple combination indices corresponding to the multiple spatial basis vector combinations; or The combination index corresponding to the larger combination index value among the multiple combination indices corresponding to the multiple combinations of spatial basis vectors; or Among the multiple spatial basis vector combinations, the combination index corresponding to the spatial basis vector combination with the smaller number of spatial basis vectors corresponding to the non-target CSI-RS resource is specified; or Among the multiple spatial basis vector combinations, the combination index corresponding to the spatial basis vector combination with the larger number of spatial basis vectors corresponding to the non-target CSI-RS resource is specified.

16. The method according to claim 15, characterized in that, The designated non-target CSI-RS resources include: All non-target CSI-RS resources; or The corresponding non-target CSI-RS resource with a smaller CSI-RS resource index; or Non-target CSI-RS resources with larger corresponding CSI-RS resource indexes.

17. The method according to any one of claims 12 to 16, characterized in that, The first indication information includes N bits, each of which corresponds to one of the N CSI-RS resources. Different values ​​of each bit are used to indicate whether the corresponding CSI-RS resource is a target CSI-RS resource or a non-target CSI-RS resource.

18. The method according to any one of claims 12 to 16, characterized in that, The first indication information and / or the second indication information are carried in the channel state information (CSI).

19. The method according to claim 18, characterized in that, The CSI includes: first information and second information, wherein the first information corresponds to an indication field of fixed size, and the size of the indication field corresponding to the second information is determined based on the first information; The first instruction information and the second instruction information are carried in the first information.

20. The method according to claim 19, characterized in that, The first information also includes at least one of the following: Channel State Information Reference Signal Resource Indicator (CRI); Layer rank indication information; Broadband Channel Quality Information (CQI); Number of non-zero bandwidth amplitude coefficients; Information indicating the number of non-zero coefficients; Non-zero coefficient position indication information; Pattern indication information.

21. The method according to claim 19, characterized in that, The second information includes precoding matrix indication PMI information; The PMI information includes at least one of the following: Spatial basis vector parameter information; Frequency domain basis vector parameter information; Non-zero coefficient position indication information; Phase coefficient information; Amplitude coefficient information.

22. A channel state information reporting device, characterized in that, Applied to a terminal, the device includes: The receiving module is configured to receive first configuration information sent by the network device. The first configuration information is used to configure at least one channel measurement resource (CMR). The at least one CMR includes N channel state information reference signals (CSI-RS) resources, where N is an integer greater than 1. A sending module is configured to send first indication information and second indication information to a network device; wherein, the first indication information is used to indicate target CSI-RS resources and non-target CSI-RS resources among the N CSI-RS resources, and the second indication information is used to indicate at least one combined index; the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the combination of spatial basis vectors corresponding to the at least one combined index indicated by the second indication information; the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0.

23. A channel state information reporting device, characterized in that, Applied to network devices, the device includes: The transmitting module is used to transmit first configuration information to the terminal. The first configuration information is used to configure at least one channel measurement resource (CMR). The at least one CMR includes N channel state information reference signals (CSI-RS) resources, where N is an integer greater than 1. The receiving module is configured to receive first indication information and / or second indication information sent by the terminal; wherein, the first indication information is used to indicate target CSI-RS resources and non-target CSI-RS resources among the N CSI-RS resources, and the second indication information is used to indicate at least one combined index; the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to the at least one combined index indicated by the second indication information; the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0.

24. A channel state information reporting device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1 to 11.

25. A channel state information reporting device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method according to any one of claims 12 to 21.

26. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the terminal's processor, enable the terminal to perform the method described in any one of claims 1 to 11.

27. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of the network device, enable the network device to perform the method described in any one of claims 12 to 21.

28. A communication system comprising a terminal and network equipment, wherein, The terminal is used to perform the method as described in any one of claims 1 to 11; The network device is used to perform the method as described in any one of claims 12 to 21.

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