A channel state information reporting method and device, and a storage medium

Abstract

The present disclosure relates to a channel state information reporting method and device and a storage medium. The channel state information reporting method is applied to a terminal and includes: measuring channel state information based on at least one channel measurement resource (CMR), wherein the channel state information includes measurement results measured based on the at least one CMR, and the measurement results include a precoding matrix indicator (PMI) shared by the at least one CMR; and reporting the channel state information. The present disclosure realizes a feedback method of joint PMI of at least one CMR, reduces signaling overhead, and improves transmission performance based on multiple CMRs.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for reporting channel state information. Background Art

[0002] In new radio (NR) technology, for example, when the communication frequency band is in frequency range 2, beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels.

[0003] In the related art, the network device is configured with multiple channel measurement resources (CMR), such as multiple transmission and reception points (TRP). When the network device has multiple TRPs, the network device can use multiple TRPs to provide services to the terminal, such as using multiple TRPs to send physical downlink shared channels (PDSCH) to the terminal. Among them, when the network device uses multiple TRPs to provide services to the terminal, the terminal will independently feedback the precoding matrix indicators (PMI) of the multiple TRPs to the network device. The terminal independently feedbacks PMI for multiple TRPs to the network device, that is, it needs to feedback multiple PMIs, resulting in a large signaling overhead. Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides a channel state information reporting method, device and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a channel state information reporting method is provided, which is applied to a terminal and includes:

[0006] Based on at least one channel measurement resource CMR, channel state information is measured, where the channel state information includes a measurement result based on the at least one CMR measurement, and the measurement result includes a precoding matrix indicator PMI shared by the at least one CMR; and the channel state information is reported.

[0007] In one implementation, each of the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0008] In one implementation, the CMR resource set corresponds to resource parameters, where the resource parameters include one or more of a control resource set pool index, a transmitting / receiving point, and a remote radio head. Different CMR resource sets correspond to different resource parameters.

[0009] In one implementation, the PMI includes one or more PMI feedback parameters.

[0010] In one embodiment, there is a phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; the X1 information field is used to carry the first broadband PMI feedback parameter, and the X2 information field is used to carry the second broadband PMI feedback parameter or the narrowband PMI feedback parameter.

[0011] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group; the first PMI feedback parameter group includes at least one of the following:

[0012] A first PMI feedback parameter, wherein the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; a second PMI feedback parameter, wherein the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; a third PMI feedback parameter, wherein the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of other layers and the first layer; a fourth PMI feedback parameter, wherein the fourth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR.

[0013] In one embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0014] In one embodiment, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

[0015] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group;

[0016] The second PMI feedback parameter group includes at least one of the following:

[0017] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; an eighth PMI feedback parameter, the eighth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0018] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0019] In one embodiment, the second PMI feedback parameter group includes a sixth PMI feedback parameter or multiple sixth PMI feedback parameters; the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension of the same transmitting and receiving point / remote radio head, the number of antenna ports in the second dimension, and / or the number of selected beams;

[0020] The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the first dimension, the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the second dimension, and / or the number of beams selected by the multiple different transmitting and receiving points / radio frequency remote heads.

[0021] In an embodiment, the V matrix corresponding to each of the at least one CMR is different, and the PMI feedback parameter is carried in an X1 information field or an X2 information field; the X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

[0022] In an embodiment, the V matrix corresponding to each of the at least one CMR is different, and the first wideband PMI feedback parameter carried in the X1 information field comprises:

[0023] a first PMI feedback parameter, which is determined based on a first-dimension antenna port number and a first-dimension oversampling number, or a first-dimension antenna port number and a first-dimension beam number; or a second PMI feedback parameter, which is determined based on a second-dimension antenna port number and a second-dimension oversampling number, or a second-dimension antenna port number and a second-dimension beam number; or a third PMI feedback parameter, which is used to indicate a relative difference of the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers.

[0024] In an embodiment, the V matrix corresponding to each of the at least one CMR is different, and the second wideband PMI feedback parameter or the narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0025] In an embodiment, the first wideband PMI feedback parameter carried in the X1 information field comprises a plurality of different first PMI feedback parameters, and the different first PMI feedback parameters correspond to different CMRs; or the first wideband PMI feedback parameter carried in the X1 information field comprises a plurality of different second PMI feedback parameters, and the different second PMI feedback parameters correspond to different CMRs; or the first wideband PMI feedback parameter carried in the X1 information field comprises a plurality of different third PMI feedback parameters, and the different third PMI feedback parameters correspond to different CMRs.

[0026] In an embodiment, the V matrix corresponding to each of the at least one CMR is different, and the PMI feedback parameter comprises at least one of:

[0027] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0028] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters include:

[0029] Multiple different fifth PMI feedback parameters, different fifth PMI feedback parameters correspond to different CMRs; and / or multiple different sixth PMI feedback parameters, different sixth PMI feedback parameters correspond to different CMRs; and / or multiple different seventh PMI feedback parameters, different seventh PMI feedback parameters correspond to different CMRs; and / or multiple different ninth PMI feedback parameters, different ninth PMI feedback parameters correspond to different CMRs.

[0030] According to a second aspect of an embodiment of the present disclosure, a channel state information reporting method is provided, which is applied to a network device, including: obtaining channel state information reported by a terminal, the channel state information including a measurement result based on at least one channel measurement resource CMR measurement, and the measurement result including a precoding matrix indication PMI shared by the at least one CMR.

[0031] In one implementation, each of the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0032] In one implementation, the CMR resource set corresponds to resource parameters, where the resource parameters include one or more of a control resource set pool index, a transmitting / receiving point, and a remote radio head. Different CMR resource sets correspond to different resource parameters.

[0033] In one implementation, the PMI includes one or more PMI feedback parameters.

[0034] In one embodiment, there is a phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; the X1 information field is used to carry the first broadband PMI feedback parameter, and the X2 information field is used to carry the second broadband PMI feedback parameter or the narrowband PMI feedback parameter.

[0035] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group; the first PMI feedback parameter group includes at least one of the following:

[0036] A first PMI feedback parameter, wherein the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; a second PMI feedback parameter, wherein the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; a third PMI feedback parameter, wherein the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of other layers and the first layer; a fourth PMI feedback parameter, wherein the fourth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR.

[0037] In one embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0038] In one embodiment, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

[0039] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group;

[0040] The second PMI feedback parameter group includes at least one of the following:

[0041] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; an eighth PMI feedback parameter, the eighth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0042] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0043] In one embodiment, the second PMI feedback parameter group includes a sixth PMI feedback parameter or multiple sixth PMI feedback parameters; the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension of the same transmitting and receiving point / remote radio head, the number of antenna ports in the second dimension, and / or the number of selected beams;

[0044] The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the first dimension, the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the second dimension, and / or the number of beams selected by the multiple different transmitting and receiving points / radio frequency remote heads.

[0045] In one embodiment, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters are carried in the X1 information field or the X2 information field; the X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0046] In one implementation, the first wideband PMI feedback parameter carried in the X1 information field includes:

[0047] A first PMI feedback parameter, wherein the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; or a second PMI feedback parameter, wherein the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; or a third PMI feedback parameter, wherein the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of other layers and the first layer.

[0048] In one implementation, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0049] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes multiple different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs; or the first broadband PMI feedback parameter carried in the X1 information field includes multiple different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs; or the first broadband PMI feedback parameter carried in the X1 information field includes multiple different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

[0050] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameter includes at least one of the following:

[0051] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0052] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters include:

[0053] The plurality of different fifth PMI feedback parameters correspond to different CMRs, and / or the plurality of different sixth PMI feedback parameters correspond to different CMRs, and / or the plurality of different seventh PMI feedback parameters correspond to different CMRs, and / or the plurality of different ninth PMI feedback parameters correspond to different CMRs.

[0054] According to a third aspect of the embodiments of the present disclosure, a channel state information reporting apparatus is provided, comprising:

[0055] a measurement unit configured to measure channel state information based on at least one channel measurement resource (CMR), wherein the channel state information comprises measurement results measured based on the at least one CMR, and the measurement results comprise a precoding matrix indicator (PMI) shared by the at least one CMR; and

[0056] In an implementation form, each of the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0057] In an implementation form, the CMR resource set corresponds to a resource parameter, the resource parameter comprises one or more of a control resource set pool index, a transmission reception point, and a radio remote head, and different CMR resource sets correspond to different resource parameters.

[0058] In an implementation form, the PMI comprises one or more PMI feedback parameters.

[0059] In an implementation form, there is a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameters are carried in an X1 information field and / or an X2 information field; the X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

[0060] In an implementation form, the first wideband PMI feedback parameter carried in the X1 information field comprises a first PMI feedback parameter group; and the first PMI feedback parameter group comprises at least one of the following:

[0061] A first PMI feedback parameter, wherein the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; a second PMI feedback parameter, wherein the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; a third PMI feedback parameter, wherein the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of other layers and the first layer; a fourth PMI feedback parameter, wherein the fourth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR.

[0062] In one embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0063] In one embodiment, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

[0064] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group;

[0065] The second PMI feedback parameter group includes at least one of the following:

[0066] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; an eighth PMI feedback parameter, the eighth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0067] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0068] In one embodiment, the second PMI feedback parameter group includes a sixth PMI feedback parameter or multiple sixth PMI feedback parameters; the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension of the same transmitting and receiving point / remote radio head, the number of antenna ports in the second dimension, and / or the number of selected beams;

[0069] The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the first dimension, the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the second dimension, and / or the number of beams selected by the multiple different transmitting and receiving points / radio frequency remote heads.

[0070] In one embodiment, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters are carried in the X1 information field or the X2 information field; the X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0071] In one embodiment, the V matrices corresponding to the respective CMRs in the at least one CMR are different, and the first wideband PMI feedback parameters carried in the X1 information field include:

[0072] A first PMI feedback parameter, wherein the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; or a second PMI feedback parameter, wherein the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; or a third PMI feedback parameter, wherein the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of other layers and the first layer.

[0073] In one embodiment, the V matrices corresponding to the CMRs in the at least one CMR are different, and the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0074] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes multiple different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs; or the first broadband PMI feedback parameter carried in the X1 information field includes multiple different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs; or the first broadband PMI feedback parameter carried in the X1 information field includes multiple different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

[0075] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameter includes at least one of the following:

[0076] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0077] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters include:

[0078] Multiple different fifth PMI feedback parameters, different fifth PMI feedback parameters correspond to different CMRs; and / or multiple different sixth PMI feedback parameters, different sixth PMI feedback parameters correspond to different CMRs; and / or multiple different seventh PMI feedback parameters, different seventh PMI feedback parameters correspond to different CMRs; and / or multiple different ninth PMI feedback parameters, different ninth PMI feedback parameters correspond to different CMRs.

[0079] According to a fourth aspect of an embodiment of the present disclosure, a channel state information reporting device is provided, including:

[0080] The acquisition unit is configured to acquire channel state information reported by a terminal, wherein the channel state information comprises measurement results measured based on at least one channel measurement resource (CMR), and the measurement results comprise a precoding matrix indicator (PMI) shared by the at least one CMR.

[0081] In an implementation, each of the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0082] In an implementation, the CMR resource set corresponds to a resource parameter, the resource parameter comprises one or more of a control resource set pool index, a transmission reception point, and a radio remote head, and different CMR resource sets correspond to different resource parameters.

[0083] In an implementation, the PMI comprises one or more PMI feedback parameters.

[0084] In an implementation, there is a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in an X1 information field and / or an X2 information field; the X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

[0085] In an implementation, the first wideband PMI feedback parameter carried in the X1 information field comprises a first PMI feedback parameter group; the first PMI feedback parameter group comprises at least one of:

[0086] a first PMI feedback parameter determined based on a first-dimension antenna port number and a first-dimension oversampling number, or a first-dimension antenna port number and a first-dimension beam number; a second PMI feedback parameter determined based on a second-dimension antenna port number and a second-dimension oversampling number, or a second-dimension antenna port number and a second-dimension beam number; a third PMI feedback parameter used to indicate a relative difference of the first PMI feedback parameter and / or the second PMI feedback parameter of a first layer of other layers; and a fourth PMI feedback parameter used to indicate a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR.

[0087] In one embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0088] In one embodiment, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

[0089] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group;

[0090] The second PMI feedback parameter group includes at least one of the following:

[0091] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; an eighth PMI feedback parameter, the eighth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in the at least one CMR; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0092] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same; and / or the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0093] In one embodiment, the second PMI feedback parameter group includes a sixth PMI feedback parameter or multiple sixth PMI feedback parameters; the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension of the same transmitting and receiving point / remote radio head, the number of antenna ports in the second dimension, and / or the number of selected beams;

[0094] The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the first dimension, the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the second dimension, and / or the number of beams selected by the multiple different transmitting and receiving points / radio frequency remote heads.

[0095] In one embodiment, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters are carried in the X1 information field or the X2 information field; the X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0096] In one implementation, the first wideband PMI feedback parameter carried in the X1 information field includes:

[0097] A first PMI feedback parameter, wherein the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; or a second PMI feedback parameter, wherein the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; or a third PMI feedback parameter, wherein the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of other layers and the first layer.

[0098] In one implementation, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0099] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes multiple different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs; or the first broadband PMI feedback parameter carried in the X1 information field includes multiple different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs; or the first broadband PMI feedback parameter carried in the X1 information field includes multiple different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

[0100] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameter includes at least one of the following:

[0101] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number; a sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number; a seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer; a ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0102] In one implementation, the V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameters include:

[0103] Multiple different fifth PMI feedback parameters, different fifth PMI feedback parameters correspond to different CMRs; and / or multiple different sixth PMI feedback parameters, different sixth PMI feedback parameters correspond to different CMRs; and / or multiple different seventh PMI feedback parameters, different seventh PMI feedback parameters correspond to different CMRs; and / or multiple different ninth PMI feedback parameters, different ninth PMI feedback parameters correspond to different CMRs.

[0104] According to a fifth aspect of an embodiment of the present disclosure, a channel state information reporting device is provided, including:

[0105] a processor; a memory for storing instructions executable by the processor;

[0106] The processor is configured to: execute the channel state information reporting method described in the first aspect or any one of the implementations of the first aspect.

[0107] According to a sixth aspect of an embodiment of the present disclosure, a channel state information reporting device is provided, including:

[0108] a processor; a memory for storing instructions executable by the processor;

[0109] The processor is configured to: execute the channel state information reporting method described in the second aspect or any one of the implementations of the second aspect.

[0110] According to the seventh aspect of the embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by the processor of the terminal, the terminal is enabled to execute the channel state information reporting method described in the first aspect or any one of the embodiments of the first aspect.

[0111] According to the eighth aspect of the embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by the processor of the network device, the network device can execute the channel state information reporting method described in the second aspect or any one of the embodiments of the second aspect.

[0112] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the channel state information includes a measurement result based on at least one CMR measurement, and the measurement result includes at least one PMI shared by the CMRs, thereby implementing a feedback method for the joint PMI of at least one CMR, reducing signaling overhead, and improving transmission performance based on multiple CMRs.

[0113] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0114] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0115] Figure 1 The figure is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0116] Figure 2 The figure is a flowchart of a CSI reporting method according to an exemplary embodiment.

[0117] Figure 3 The figure is a flowchart of another CSI reporting method according to an exemplary embodiment.

[0118] Figure 4 The figure is a block diagram showing a CSI reporting device according to an exemplary embodiment.

[0119] Figure 5 It is a block diagram of another CSI reporting device according to an exemplary embodiment.

[0120] Figure 6 The figure is a block diagram showing a device for CSI reporting according to an exemplary embodiment.

[0121] Figure 7 It is a block diagram showing another apparatus for CSI reporting according to an exemplary embodiment. DETAILED DESCRIPTION

[0122] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0123] The CSI reporting method provided by the embodiment of the present disclosure can be applied to Figure 1 In the wireless communication system shown in FIG. Figure 1 As shown in FIG, the wireless communication system includes a terminal and a network device. The terminal is connected to the network device via wireless resources and performs data transmission and reception.

[0124] It is understandable that Figure 1 The wireless communication system shown is only for schematic illustration. The wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices. Figure 1 The embodiment of the present disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0125] It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt 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 / collision avoidance (Carrier Sense Multiple Access with Collision Avoidance). According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, which can also be called New Radio (NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as simply a network.

[0126] Furthermore, the network devices involved in the present disclosure may also be referred to as wireless access network devices. The wireless access network devices may be: base stations, evolved node B (eNB), home base stations, access points (APs) in wireless fidelity (WIFI) systems, wireless relay nodes, wireless backhaul nodes, transmission points (TPs) or transmission and reception points (TRPs), etc., and may also be gNBs in NR systems, or may also be components or part of devices constituting base stations. In the case of a vehicle-to-everything (V2X) communication system, the network device may also be an on-board device. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.

[0127] 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 for a user, for example, the terminal can be a handheld device having wireless connection function, a vehicle-mounted device, etc. At present, some examples of the terminal are: a mobile phone, 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 disclosure embodiments do not limit the specific technology and specific device form of the terminal.

[0128] In the present disclosure, the network device and the terminal perform data transmission based on beams. In the process of data transmission based on beams, the network device (for example, a base station) can configure multiple CMRs to serve the terminal. The terminal can also perform channel measurement based on the multiple CMRs and feed back channel state information (CSI). In the related art, the terminal independently feeds back PMI for each of the multiple CMRs, that is, when multiple CMRs are used, multiple PMIs need to be independently fed back. However, for the same terminal, the channels of the multiple CMRs are correlated, and independent feedback of multiple PMIs results in a large signaling overhead and low transmission performance.

[0129] The present disclosure embodiments provide a CSI reporting method. The terminal measures CSI based on at least one CMR, the CSI including measurement results measured based on the at least one CMR, and the measurement results including PMI common to the at least one CMR. The terminal reports the CSI. The network device obtains the CSI reported by the terminal and including the measurement results of the at least one CMR. The present disclosure realizes joint transmission of PMI of multiple CMRs, reduces signaling overhead, and improves transmission performance.

[0130] Figure 2 FIG. 1 is a flowchart of a CSI reporting method according to an example embodiment, as shown in FIG. 1, the CSI reporting method is used in a terminal, including the following steps. Figure 2

[0131] In step S11, CSI is measured based on at least one CMR. The CSI includes measurement results measured based on the at least one CMR, and the measurement results include PMI common to the at least one CMR.​

[0132] In step S12, CSI is reported.

[0133] In the embodiment of the present disclosure, the CSI reported by the terminal includes a measurement result based on at least one CMR measurement, and the measurement result includes at least one PMI shared by the CMRs, thereby implementing a joint PMI feedback method for multiple CMRs, reducing signaling overhead, and improving transmission performance based on multiple CMRs.

[0134] In the embodiment of the present disclosure, the number of the at least one CMR for measuring CSI may be one or more.

[0135] Each of the at least one CMR involved in the embodiments of this disclosure corresponds to a CMR resource set, and different CMRs correspond to different CMR resource sets. The at least one CMR includes at least two different CMRs. The at least two different CMRs correspond to different CMR resource sets. The CMR set involved in the embodiments of this disclosure can be a CMR set configured on a network device, or a subset of a CMR set configured on the network device. That is, each of the at least one CMR corresponds to a different CMR subset or a different CMR set.

[0136] In one implementation of the embodiment of the present disclosure, a CMR resource set corresponding to each CMR in at least one CMR corresponds to a resource parameter, and the resource parameter includes one or more of a control resource set (Control Resource Set, CORESET) pool index (PoolIndex), a transmission reception point (Transmission reception Point, TRP) and a remote radio header (remote radio header, RRH).

[0137] In the embodiments of the present disclosure, different CMR resource sets correspond to different resource parameters. This can be understood as different CMRs corresponding to different resource parameters. For example, different CMRs correspond to different TRPs. It can be further understood that a terminal can perform CSI measurements based on different TRPs, and include the PMI shared by different TRPs in the measurement results. For another example, different CMRs correspond to different RRHs. It can be further understood that a terminal can perform CSI measurements based on different RRHs, and include the PMI shared by different RRHs in the measurement results.

[0138] In the embodiment of the present disclosure, the PMI shared by at least one CMR may be understood as one PMI. The CSI includes a measurement result obtained based on at least one CMR measurement and includes one PMI.

[0139] In the embodiments of the present disclosure, a PMI included in a measurement result based on at least one CMR measurement can be understood as a set of PMI feedback parameters. The set of PMI feedback parameters includes one or more PMI feedback parameters. Some of the PMI feedback parameters are the same for different CMRs, while some are different for different CMRs.

[0140] Furthermore, in the embodiment of the present disclosure, the PMI feedback parameter included in the measurement result based on at least one CMR measurement may be determined based on V matrices corresponding to different CMRs.

[0141] In the embodiment of the present disclosure, the V matrix is ​​generated by the U matrix. The U matrix can be expressed as the following formula:

[0142]

[0143]

[0144] In the U matrix, N2 represents the number of antenna ports in the second dimension, O2 represents the oversampling factor in the second dimension, N1 represents the number of antenna ports in the first dimension, and O1 represents the oversampling factor in the first dimension. L represents the number of layers. Therefore, the V matrix corresponding to CMR is related to the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, the oversampling factor in the first dimension, the oversampling factor in the second dimension, and the number of layers.

[0145] In the embodiment of the present disclosure, the V matrix may also be composed of multiple column vectors, in which only one element in each column vector is 1 and the other elements are all 0.

[0146] In the embodiments of the present disclosure, the V matrix may also have other forms, which are not limited by the present disclosure.

[0147] In one implementation of the present disclosure, there is a phase offset between the V matrices corresponding to at least two CMRs in at least one CMR for measuring CSI. That is, different V matrices can be determined by different phase offsets. The at least two different CMRs correspond to different CMR subsets or different CMR sets. Therefore, there is a phase offset between the V matrices corresponding to different CMR subsets or different CMR sets. The PMI feedback parameter is carried in the X1 information field and / or the X2 information field. The X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0148] In the embodiments of the present disclosure, the first wideband PMI feedback parameter carried in the X1 information field may be one or more PMI feedback parameter groups. For ease of description in the embodiments of the present disclosure, any two different PMI feedback parameter groups included in the first wideband PMI feedback parameter carried in the X1 information field are referred to as a first PMI feedback parameter group and a second PMI feedback parameter group.

[0149] In one example, the first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group (Codebook index i1). The first PMI feedback parameter group includes at least one of the following:

[0150] A: First PMI feedback parameter (i 1,1 ). The first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. That is, i 1,1 Related to N1 and O1, where N1 is the number of antenna ports in the first dimension and O1 is the number of oversampling or beams in the first dimension.

[0151] In the embodiment of the present disclosure, the first PMI feedback parameter may be a parameter corresponding to a sampling position selected from N1*O1 sampling positions.

[0152] B: Second PMI feedback parameter (i 1,2 ). The second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. That is, i 1,2 Related to N2 and O2, where N2 is the number of antenna ports in the second dimension and O2 is the number of oversampling or beams in the second dimension.

[0153] In the embodiment of the present disclosure, the second PMI feedback parameter may be a parameter corresponding to a sampling position selected from N2*O2 sampling positions.

[0154] C: The third PMI feedback parameter (i 1,3 The third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers. The third PMI feedback parameter is primarily used for determining antenna ports between different layers when RANK > 1 (i.e., when the number of layers is greater than 1).

[0155] D: fourth PMI feedback parameter (i 1,4 ). The fourth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR.

[0156] Among them, i1,4 It is used to adjust the relative phase between different CMR subsets or different CMR sets. In one example, i 1,4 Include at least one of the following parameters: i 1,4,1 ,i 1,4,2 ,i 1,4,3 Among them, i 1,4,1 Indicates the phase of layer 1. 1,4,2 Indicates the phase offset of layer 2 relative to layer 1. 1,4,3 Indicates the phase shift of layer 3 relative to layer 1.

[0157] In the disclosed embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the first PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the first PMI feedback parameter.

[0158] In this embodiment of the present disclosure, the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the second PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the second PMI feedback parameter.

[0159] In this embodiment of the present disclosure, the first PMI feedback parameter group includes a third PMI feedback parameter. The third PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the third PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the third PMI feedback parameter.

[0160] In this embodiment of the present disclosure, a phase offset exists between the V matrices corresponding to at least two CMRs in at least one CMR used to measure CSI. The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information domain is used for at least one of the following: beam selection, phase offset determination, indication of the location of a selected frequency domain element, and indication of the location of a non-zero coefficient.

[0161] The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field may include i2, i 2,0 ,i 2,1 ,i 2,2 At least one of .... Among them, i2, i 2,0 ,i 2,1 ,i 2,2 It can be understood as the 0th, 1st, 2nd, 3rd... PMI feedback parameters carried in the X2 information field.

[0162] In another example of the present disclosure, there is a phase offset between V matrices corresponding to at least two CMRs in at least one CMR used to measure CSI. The first wideband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group (Codebook index i1). The second PMI feedback parameter group includes at least one of the following:

[0163] A: The fifth PMI feedback parameter (i 1,1 ). The fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number. That is, i 1,1 Related to O1 and O2, where O1 is the oversampling number or beam number in the first dimension and O2 is the oversampling number or beam number in the second dimension.

[0164] B: Sixth PMI feedback parameter (i 1,2 ). The sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension and / or the number of selected beams. That is, i 1,2 Related to N2, N2 and L, where N1 is the number of antenna ports in the first dimension, N2 is the number of antenna ports in the second dimension, and L is the number of selected beams.

[0165] In the embodiment of the present disclosure, the second PMI feedback parameter group includes one sixth PMI feedback parameter or multiple sixth PMI feedback parameters.

[0166] Among them, a sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams of the same TRP / RRH.

[0167] Among them, multiple sixth PMI feedback parameters are determined based on the number of antenna ports of multiple different TRP / RRHs in the first dimension, the number of antenna ports of the multiple different TRP / RRHs in the second dimension, and / or the number of beams selected by multiple different TRP / RRHs.

[0168] In one example, when only one L value is fed back, it is assumed that N1, N2, and the selected L are the same for each TRP / RRH. N1 is the number of antenna ports in the first dimension at one TRP / RRH, N2 is the number of antenna ports in the second dimension at the same TRP / RRH, and L is the number of L selected from N1*N2. Alternatively, when only one L value is fed back, N1 can be the sum of the number of antenna ports in the first dimension at multiple TRPs / RRHs, N2 can be the sum of the number of antenna ports in the second dimension at multiple TRPs / RRHs, and L is the number of L selected from N1*N2.

[0169] In the disclosed embodiment, there is no restriction on the number of selected TRPs / RRHs, which may be L / N (N is the number of TRPs / RRHs), or different TRPs / RRHs may be selected.

[0170] C: seventh PMI feedback parameter (i 1,3 The seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer and other layers. The third PMI feedback parameter is mainly used for the case of RANK>1, that is, when the number of layers is greater than 1, and is mainly used to determine the antenna ports between different layers.

[0171] D: eighth PMI feedback parameter (i 1,4 The eighth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR. The eighth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR.

[0172] Among them, i 1,4 It is used to adjust the relative phase between different CMR subsets or different CMR sets. In one example, i 1,4 Include at least one of the following parameters: i 1,4,1 ,i 1,4,2 ,i 1,4,3 Among them, i 1,4,1 Indicates the phase of layer 1. i 1,4,2 Indicates the phase offset of layer 2 relative to layer 1. 1,4,3 Indicates the phase shift of layer 3 relative to layer 1.

[0173] E: ninth PMI feedback parameter (i 1,5 ). The ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0174] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the fifth PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the fifth PMI feedback parameter.

[0175] In one embodiment, the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the sixth PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the sixth PMI feedback parameter.

[0176] In one embodiment, the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the seventh PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the seventh PMI feedback parameter.

[0177] In one embodiment, the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. That is, the ninth PMI feedback parameter is the same for different CMR subsets or different CMR sets. The V matrix is ​​associated with the ninth PMI feedback parameter.

[0178] In this embodiment of the present disclosure, a phase offset exists between the V matrices corresponding to at least two CMRs in at least one CMR used to measure CSI. The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information domain is used for at least one of the following: beam selection, phase offset determination, indication of the location of a selected frequency domain element, and indication of the location of a non-zero coefficient.

[0179] The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field may include i2, i 2,0 ,i 2,1 ,i 2,2 At least one of .... Among them, i2, i 2,0 ,i 2,1 ,i 2,2 It can be understood as the 0th, 1st, 2nd, 3rd... PMI feedback parameters carried in the X2 information field.

[0180] The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field may include the position of the frequency domain unit selected for feedback, which may be referred to as i 1,6 Among them, for different CMR subsets or different CMR sets, the parameter i 1,6 Unified feedback (i.e. parameter i 1,6 same) or independent feedback.

[0181] The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field may include an indication of a non-zero coefficient position, which may be referred to as i 1,7 . Among them, for different CMR subsets or different CMR sets, the parameter is uniformly fed back (ie, the parameter i 1,7 same) or independent feedback.

[0182] In another embodiment of the present disclosure, at least two of the at least one CMR for measuring CSI have different V matrices corresponding to them. The different V matrices may include the V matrices corresponding to the different CMRs being determined by phase offset, or the V matrices corresponding to the different CMRs being mutually indeterminate using information such as phase offset. PMI feedback parameters are carried in the X1 information field or the X2 information field. The X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0183] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes at least one of the following items A, B, and C, and at least one of the included PMI feedback parameters includes multiple feedback values:

[0184] A: First PMI feedback parameter (i 1,1 ). The first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. That is, i 1,1 Related to N1 and O1, where N1 is the number of antenna ports in the first dimension and O1 is the number of oversampling or beams in the first dimension.

[0185] In the embodiment of the present disclosure, the first PMI feedback parameter may be a parameter corresponding to a sampling position selected from N1*O1 sampling positions.

[0186] B: Second PMI feedback parameter (i 1,2 ). The second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. That is, i 1,2 Related to N2 and O2, where N2 is the number of antenna ports in the second dimension and O2 is the number of oversampling or beams in the second dimension.

[0187] In the embodiment of the present disclosure, the second PMI feedback parameter may be a parameter corresponding to a sampling position selected from N2*O2 sampling positions.

[0188] C: The third PMI feedback parameter (i 1,3 The third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers. The third PMI feedback parameter is primarily used for determining antenna ports between different layers when RANK > 1 (i.e., when the number of layers is greater than 1).

[0189] In an embodiment, the V matrix corresponding to each of the at least one CMR is different, the first wideband PMI feedback parameter carried in the X1 information field includes a plurality of different first PMI feedback parameters, and the different first PMI feedback parameters correspond to different CMRs. And / or the first wideband PMI feedback parameter carried in the X1 information field includes a plurality of different second PMI feedback parameters, and the different second PMI feedback parameters correspond to different CMRs. And / or the first wideband PMI feedback parameter carried in the X1 information field includes a plurality of different third PMI feedback parameters, and the different third PMI feedback parameters correspond to different CMRs.

[0190] In an embodiment of the present disclosure, different feedback values in the PMI feedback parameter including a plurality of feedback values correspond to different CMR subsets or different CMR sets, that is, correspond to different CORESETPoolindex or different TRPs or different RRHs.

[0191] In another embodiment, the V matrix corresponding to each of the at least one CMR is different, the first wideband PMI feedback parameter carried in the X1 information field includes at least one of A, B, C and E, and at least one PMI feedback parameter included in the PMI feedback parameter includes a plurality of feedback values:

[0192] A: the fifth PMI feedback parameter (i 1,1 ) is determined based on the first dimension oversampling number / the first dimension beam number and the second dimension oversampling number / the second dimension beam number. That is, i 1,1 O1 is the first dimension oversampling number or the beam number, and O2 is the second dimension oversampling number or the beam number.

[0193] B: the sixth PMI feedback parameter (i 1,2 ) is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number. That is, i 1,2 N1 is the first dimension antenna port number, N2 is the second dimension antenna port number, and L is the selected beam number.

[0194] In an embodiment of the present disclosure, the second PMI feedback parameter group includes one sixth PMI feedback parameter or a plurality of sixth PMI feedback parameters.

[0195] Among them, a sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams for the same TRP / RRH. When only one L value is fed back, it is assumed that N1, N2, and the selected L are the same for each TRP / RRH. N1 is the number of antenna ports in the first dimension at one of the TRP / RRHs, N2 is the number of antenna ports in the second dimension at the same TRP / RRH, and L is L selected from N1*N2.

[0196] The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of multiple different TRPs / RRHs in the first dimension, the number of antenna ports of the multiple different TRPs / RRHs in the second dimension, and / or the number of beams selected by the multiple different TRPs / RRHs. When only one L value is fed back, N1 can be the sum of the number of antenna ports in the first dimension at the multiple TRPs / RRHs, N2 can be the sum of the number of antenna ports in the second dimension at the multiple TRPs / RRHs, and L is L selected from N1*N2.

[0197] In the disclosed embodiment, there is no restriction on the number of selected TRPs / RRHs, which may be L / N (N is the number of TRPs / RRHs), or different TRPs / RRHs may be selected.

[0198] C: seventh PMI feedback parameter (i 1,3 The seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer and other layers. The third PMI feedback parameter is mainly used for the case of RANK>1, that is, when the number of layers is greater than 1, and is mainly used to determine the antenna ports between different layers.

[0199] E: ninth PMI feedback parameter (i 1,5 ). The ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0200] In one embodiment, a plurality of different fifth PMI feedback parameters may correspond to different CMRs. And / or a plurality of different sixth PMI feedback parameters may correspond to different CMRs. And / or a plurality of different seventh PMI feedback parameters may correspond to different CMRs. And / or a plurality of different ninth PMI feedback parameters may correspond to different CMRs.

[0201] Furthermore, the V matrices corresponding to at least two CMRs in at least one CMR for measuring CSI are different, and the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0202] The CSI reporting method provided in the embodiment of the present disclosure is that when a terminal performs communication transmission based on multiple CMRs, for example, when performing communication transmission based on multiple CORESETPoolIndex, multiple TRPs, or multiple RRHs, the CSI reporting method involved in the above embodiment can be used to implement joint PMI feedback between multiple CORESETPoolIndex, joint PMI feedback between multiple TRPs, or joint PMI feedback between multiple RRHs. Therefore, the joint PMI feedback method provided in the present disclosure can reduce signaling overhead relative to the independent PMI feedback method, and improve the transmission performance of communication transmission based on multiple CMRs.

[0203] Based on the above embodiments, an embodiment of the present disclosure further provides a CSI reporting method applied to a network device.

[0204] Figure 3 is a flow chart of a CSI reporting method according to an exemplary embodiment. Figure 3 As shown, the CSI reporting method is used in a network device and includes the following steps.

[0205] In step S21, CSI reported by the terminal is obtained, where the CSI includes a measurement result based on at least one CMR measurement, and the measurement result includes at least one PMI shared by the CMRs.

[0206] In one implementation, each CMR in the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0207] The CMR set involved in the embodiments of the present disclosure may be a CMR set configured on a network device, or a subset of a CMR set configured on a network device, that is, each CMR in at least one CMR corresponds to a different CMR subset or a different CMR set.

[0208] In one implementation, the CMR resource set corresponds to resource parameters, and the resource parameters include controlling one or more of CORESETPoolIndex, TRP, and RRH. Different CMR resource sets correspond to different resource parameters.

[0209] In the embodiments of the present disclosure, different CMR resource sets correspond to different resource parameters. This can be understood as different CMRs corresponding to different resource parameters. For example, different CMRs correspond to different TRPs. It can be further understood that a terminal can perform CSI measurements based on different TRPs, and include the PMI shared by different TRPs in the measurement results. For another example, different CMRs correspond to different RRHs. It can be further understood that a terminal can perform CSI measurements based on different RRHs, and include the PMI shared by different RRHs in the measurement results.

[0210] In one embodiment, the PMI includes one or more PMI feedback parameters. The one or more PMI feedback parameters can be understood as one or more PMI feedback parameters in a set of PMI feedback parameters. Among the set of PMI feedback parameters, some parameters are the same for different CMRs, while some parameters are different for different CMRs.

[0211] In one embodiment, there is a phase offset between the V matrices corresponding to at least two CMRs in at least one CMR used to measure CSI, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; the X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0212] In one implementation, the first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group; the first PMI feedback parameter group includes at least one of the following:

[0213] A first PMI feedback parameter, the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. A second PMI feedback parameter, the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. A third PMI feedback parameter, the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the other layers and the first layer. A fourth PMI feedback parameter, the fourth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in at least one CMR.

[0214] Among them, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same; and / or the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same; and / or the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same.

[0215] In one embodiment, a phase offset exists between V matrices corresponding to at least two CMRs in at least one CMR used to measure CSI. The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain element, and indicating the position of a non-zero coefficient.

[0216] In one implementation, the first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group; the second PMI feedback parameter group includes at least one of the following:

[0217] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number. A sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number. A seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the other layers and the first layer. An eighth PMI feedback parameter, the eighth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in at least one CMR. A ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0218] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. And / or the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. And / or the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. And / or the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0219] In one implementation, the second PMI feedback parameter group includes one sixth PMI feedback parameter or multiple sixth PMI feedback parameters.

[0220] Among them, a sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams of the same TRP / RRH.

[0221] Among them, multiple sixth PMI feedback parameters are determined based on the number of antenna ports of multiple different TRP / RRHs in the first dimension, the number of antenna ports of multiple different TRP / RRHs in the second dimension, and / or the number of beams selected by multiple different TRP / RRHs.

[0222] In one example, when only one L value is fed back, it is assumed that N1, N2, and the selected L are the same for each TRP / RRH. N1 is the number of antenna ports in the first dimension at one TRP / RRH, N2 is the number of antenna ports in the second dimension at the same TRP / RRH, and L is the number of L selected from N1*N2. Alternatively, when only one L value is fed back, N1 can be the sum of the number of antenna ports in the first dimension at multiple TRPs / RRHs, N2 can be the sum of the number of antenna ports in the second dimension at multiple TRPs / RRHs, and L is the number of L selected from N1*N2.

[0223] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameters are carried in the X1 information field or the X2 information field; the X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0224] In one implementation, the V matrices corresponding to the CMRs in at least one CMR are different, and the first wideband PMI feedback parameters carried in the X1 information field include:

[0225] A first PMI feedback parameter, the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. A second PMI feedback parameter, the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. A third PMI feedback parameter, the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers.

[0226] In one implementation, the V matrices corresponding to the CMRs in at least one CMR are different, and the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0227] In one embodiment, the V matrices corresponding to each CMR in at least one CMR are different, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs. Alternatively, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs. Alternatively, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

[0228] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameter includes at least one of the following:

[0229] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number. A sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number, and / or the selected beam number. A seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer. A ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0230] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameters include:

[0231] Multiple different fifth PMI feedback parameters, each corresponding to a different CMR. And / or multiple different sixth PMI feedback parameters, each corresponding to a different CMR. And / or multiple different seventh PMI feedback parameters, each corresponding to a different CMR. And / or multiple different ninth PMI feedback parameters, each corresponding to a different CMR.

[0232] In an embodiment of the present disclosure, a network device obtains CSI reported by a terminal and including a measurement result of a PMI shared by at least one CMR. The present disclosure enables joint transmission of PMIs of multiple CMRs, reduces signaling overhead, and improves transmission performance.

[0233] It should be noted that, in the embodiments of the present disclosure, the implementation methods of some embodiments involved in the process of the network device executing the CSI reporting method can refer to the relevant description of the terminal executing the CSI reporting method, and will not be repeated here.

[0234] It is understood that the CSI reporting method provided in the embodiments of the present disclosure is applicable to the process of implementing CSI reporting by the terminal and the network device through interaction. For the methods performed by the terminal and the network device involved in the process of implementing CSI reporting through interaction between the terminal and the network device, please refer to the relevant description of the above embodiments and will not be repeated here.

[0235] It should be further noted that those skilled in the art will appreciate that the various implementation methods / embodiments involved in the embodiments of the present disclosure can be used in conjunction with the aforementioned embodiments or can be used independently. Whether used alone or in conjunction with the aforementioned embodiments, the implementation principles are similar. In the implementation of the present disclosure, some embodiments are described in terms of implementation methods used together. Of course, those skilled in the art will appreciate that such examples are not limitations on the embodiments of the present disclosure.

[0236] Based on the same concept, an embodiment of the present disclosure also provides a CSI reporting device.

[0237] It is understandable that the CSI reporting device provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0238] Figure 4 FIG. 1 is a block diagram of a CSI reporting device according to an exemplary embodiment. Figure 4 The CSI reporting device 100 includes a measuring unit 101 and a reporting unit 102.

[0239] The measuring unit 101 is configured to measure CSI based on at least one CMR. The CSI includes a measurement result based on the at least one CMR, and the measurement result includes at least one PMI shared by the CMRs. The reporting unit 102 is configured to report the CSI.

[0240] In one implementation, each CMR in the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0241] In one implementation, the CMR resource set corresponds to a resource parameter, and the resource parameter includes one or more of CORESETPoolIndex, TRP, and RRH. Different CMR resource sets correspond to different resource parameters.

[0242] In one implementation, the PMI includes one or more PMI feedback parameters.

[0243] In one embodiment, a phase offset exists between V matrices corresponding to at least two CMRs in at least one CMR, and a PMI feedback parameter is carried in an X1 information field and / or an X2 information field. The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

[0244] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group. The first PMI feedback parameter group includes at least one of the following:

[0245] A first PMI feedback parameter, the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. A second PMI feedback parameter, the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. A third PMI feedback parameter, the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the other layers and the first layer. A fourth PMI feedback parameter, the fourth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in at least one CMR.

[0246] In one embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same. Furthermore, the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same. Furthermore, the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same.

[0247] In one embodiment, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

[0248] In an embodiment, the first wideband PMI feedback parameter includes a second PMI feedback parameter set in the X1 information field.

[0249] The second PMI feedback parameter set includes at least one of:

[0250] A fifth PMI feedback parameter is determined based on a first dimension oversampling number / first dimension beam number and a second dimension oversampling number / second dimension beam number. A sixth PMI feedback parameter is determined based on a first dimension antenna port number, a second dimension antenna port number and / or a selected beam number. A seventh PMI feedback parameter is used to indicate a relative difference of other layers and the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer. An eighth PMI feedback parameter is used to indicate a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR. A ninth PMI feedback parameter is used to adjust a relative amplitude of a wideband.

[0251] In an embodiment, the second PMI feedback parameter set includes the fifth PMI feedback parameter, and the fifth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same. And / or the second PMI feedback parameter set includes the sixth PMI feedback parameter, and the sixth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same. And / or the second PMI feedback parameter set includes the seventh PMI feedback parameter, and the seventh PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same. And / or the second PMI feedback parameter set includes the ninth PMI feedback parameter, and the ninth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same.

[0252] In an embodiment, the second PMI feedback parameter set includes one sixth PMI feedback parameter or multiple sixth PMI feedback parameters. One sixth PMI feedback parameter is determined based on a first dimension antenna port number, a second dimension antenna port number and / or a selected beam number at a same TRP / RRH.

[0253] Multiple sixth PMI feedback parameters are determined based on a first dimension antenna port number, a second dimension antenna port number and / or a selected beam number at multiple different TRPs / RRHs.

[0254] In an embodiment, V matrices corresponding to each CMR in the at least one CMR are different, and the PMI feedback parameter is carried in the X1 information field or the X2 information field. The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

[0255] In one implementation, the V matrices corresponding to the CMRs in at least one CMR are different, and the first wideband PMI feedback parameters carried in the X1 information field include:

[0256] A first PMI feedback parameter, the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. A second PMI feedback parameter, the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. A third PMI feedback parameter, the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers.

[0257] In one implementation, the V matrices corresponding to the CMRs in at least one CMR are different, and the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0258] In one embodiment, the V matrices corresponding to each CMR in at least one CMR are different, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs. Alternatively, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs. Alternatively, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

[0259] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameter includes at least one of the following:

[0260] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number. A sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number, and / or the selected beam number. A seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer. A ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0261] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameters include:

[0262] Multiple different fifth PMI feedback parameters, each corresponding to a different CMR. And / or multiple different sixth PMI feedback parameters, each corresponding to a different CMR. And / or multiple different seventh PMI feedback parameters, each corresponding to a different CMR. And / or multiple different ninth PMI feedback parameters, each corresponding to a different CMR.

[0263] Figure 5 FIG. 1 is a block diagram of a CSI reporting device according to an exemplary embodiment. Figure 5 The CSI reporting device 200 includes an acquisition unit 201.

[0264] The acquiring unit 201 is configured to acquire CSI reported by a terminal, where the CSI includes a measurement result based on at least one CMR measurement, and the measurement result includes at least one CMR common precoding matrix indicator PMI.

[0265] In one implementation, each CMR in the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

[0266] In one implementation, the CMR resource set corresponds to resource parameters, and the resource parameters include controlling one or more of CORESETPoolIndex, TRP, and RRH. Different CMR resource sets correspond to different resource parameters.

[0267] In one implementation, the PMI includes one or more PMI feedback parameters.

[0268] In one embodiment, a phase offset exists between V matrices corresponding to at least two CMRs in at least one CMR, and a PMI feedback parameter is carried in an X1 information field and / or an X2 information field. The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

[0269] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group. The first PMI feedback parameter group includes at least one of the following:

[0270] A first PMI feedback parameter, the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. A second PMI feedback parameter, the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. A third PMI feedback parameter, the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the other layers and the first layer. A fourth PMI feedback parameter, the fourth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in at least one CMR.

[0271] In one embodiment, the first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same. Furthermore, the first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same. Furthermore, the first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameter corresponding to at least two CMRs in at least one CMR is the same.

[0272] In one embodiment, the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

[0273] In one embodiment, the first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group. The second PMI feedback parameter group includes at least one of the following:

[0274] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number. A sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number and / or the selected beam number. A seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the other layers and the first layer. An eighth PMI feedback parameter, the eighth PMI feedback parameter indicates the phase offset between the V matrices corresponding to at least two CMRs in at least one CMR. A ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0275] In one embodiment, the second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. And / or the second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. And / or the second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same. And / or the second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameter corresponding to at least two CMRs in the at least one CMR is the same.

[0276] In one embodiment, the second PMI feedback parameter group includes one or more sixth PMI feedback parameters. The sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams for the same TRP / RRH.

[0277] Multiple sixth PMI feedback parameters are determined based on the number of antenna ports of multiple different TRP / RRHs in the first dimension, the number of antenna ports of multiple different TRP / RRHs in the second dimension, and / or the number of beams selected by multiple different TRP / RRHs.

[0278] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameters are carried in the X1 information field or the X2 information field. The X1 information field is used to carry the first wideband PMI feedback parameter, and the X2 information field is used to carry the second wideband PMI feedback parameter or the narrowband PMI feedback parameter.

[0279] In one implementation, the V matrices corresponding to the CMRs in at least one CMR are different, and the first wideband PMI feedback parameters carried in the X1 information field include:

[0280] A first PMI feedback parameter, the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension. A second PMI feedback parameter, the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension. A third PMI feedback parameter, the third PMI feedback parameter is used to indicate the relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers.

[0281] In one implementation, the V matrices corresponding to the CMRs in at least one CMR are different, and the second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

[0282] In one embodiment, the V matrices corresponding to each CMR in at least one CMR are different, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs. Alternatively, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs. Alternatively, the first wideband PMI feedback parameter carried in the X1 information field includes multiple different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

[0283] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameter includes at least one of the following:

[0284] A fifth PMI feedback parameter, the fifth PMI feedback parameter is determined based on the first dimension oversampling number / first dimension beam number, and the second dimension oversampling number / second dimension beam number. A sixth PMI feedback parameter, the sixth PMI feedback parameter is determined based on the first dimension antenna port number, the second dimension antenna port number, and / or the selected beam number. A seventh PMI feedback parameter, the seventh PMI feedback parameter is used to indicate the relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of other layers and the first layer. A ninth PMI feedback parameter, the ninth PMI feedback parameter is used to adjust the relative amplitude of the broadband.

[0285] In one embodiment, the V matrices corresponding to the CMRs in at least one CMR are different, and the PMI feedback parameters include:

[0286] Multiple different fifth PMI feedback parameters, each corresponding to a different CMR. And / or multiple different sixth PMI feedback parameters, each corresponding to a different CMR. And / or multiple different seventh PMI feedback parameters, each corresponding to a different CMR. And / or multiple different ninth PMI feedback parameters, each corresponding to a different CMR.

[0287] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0288] Figure 6is a block diagram of an apparatus 300 for CSI reporting according to an exemplary embodiment. The apparatus 300 can be provided as the terminal involved in the embodiments described above. For example, the apparatus 300 can be a mobile phone, computer, digital broadcast terminal, messaging device, gaming console, tablet device, medical device, fitness device, personal digital assistant, and the like.

[0289] Referring to Figure 6 The apparatus 300 can include one or more of the following components: a processing component 302, a memory 304, a power 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.

[0290] The processing component 302 usually controls overall operations of the apparatus 300, such as operations associated with displaying, making phone calls, data communications, camera operations, and recording operations. The processing component 302 can include one or more processors 320 to execute instructions to complete all or part of steps of the methods described above. In addition, the processing component 302 can include one or more modules to facilitate 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.

[0291] The memory 304 is configured to store various types of data to support operations of the apparatus 300. Examples of these data include instructions for any application or methods operating on the apparatus 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 can be realized 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 storage, flash memory, magnetic disk or optical disk.

[0292] The power component 306 provides power to various components of the apparatus 300. The power component 306 can include a power supply management system, one or more power sources, and other components associated with generating, managing and distributing power for the apparatus 300.

[0293] The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0294] 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 external audio signals when the device 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0295] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0296] The sensor assembly 314 includes one or more sensors for providing various aspects of the status assessment of the device 300. For example, the sensor assembly 314 can detect the open / closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300. The sensor assembly 314 can also detect changes in the position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration / deceleration of the device 300, and temperature changes of the device 300. The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0297] 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 communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0298] In an exemplary embodiment, the device 300 can be implemented by 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 elements, for performing the above-described methods.

[0299] In an exemplary embodiment, a storage medium including instructions, such as the memory 304 including instructions, is also provided, which can be executed by the processor 320 of the device 300 to complete the above-described 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.

[0300] Figure 7 is a block diagram of an apparatus 400 for CSI reporting according to an exemplary embodiment. For example, the apparatus 400 can be provided as a network device. Referring to Figure 7 , the apparatus 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by the memory 432, for storing instructions executable by the processing component 422, such as application programs. 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-described methods.

[0301] 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 ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

[0302] In an example embodiment, a 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 method. 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.

[0303] It should be further understood that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. The singular form "a", "said" and "the" are also intended to include the plural form, unless the context clearly indicates otherwise.

[0304] 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 of "first", "second", and the like can be completely interchangeable. 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.

[0305] 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 specific order or serial order shown, or requiring all of the operations shown to obtain the desired results. In a specific environment, multi-tasking and parallel processing can be advantageous.

[0306] Other embodiments of the present disclosure will be apparent to those skilled in the art upon consideration of the specification and practice of the concepts disclosed herein. The application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the application pertains.

[0307] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for reporting channel state information, characterized in that: Applied to terminals, including: Measuring channel state information based on at least one channel measurement resource (CMR), where the channel state information includes a measurement result based on the at least one CMR, and the measurement result includes a precoding matrix indicator (PMI) shared by the at least one CMR; reporting the channel state information; Wherein, the PMI includes one or more PMI feedback parameters; There is a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

2. The channel state information reporting method according to claim 1, characterized in that: Each CMR in the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

3. The channel state information reporting method according to claim 2, characterized in that: The CMR resource set corresponds to resource parameters, which include one or more of a control resource set pool index, a transmitting and receiving point, and a remote radio head. Different CMR resource sets correspond to different resource parameters.

4. The channel state information reporting method according to claim 1, wherein: The first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group; The first PMI feedback parameter group includes at least one of the following: A first PMI feedback parameter, where the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; A second PMI feedback parameter, where the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; a third PMI feedback parameter, where the third PMI feedback parameter is used to indicate a relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers; A fourth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR.

5. The channel state information reporting method according to claim 4, characterized in that: The first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same.

6. The channel state information reporting method according to claim 1, wherein: The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

7. The channel state information reporting method according to claim 1, characterized in that: The first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group; The second PMI feedback parameter group includes at least one of the following: a fifth PMI feedback parameter, the fifth PMI feedback parameter being determined based on the first-dimension oversampling number / the first-dimension beam number and the second-dimension oversampling number / the second-dimension beam number; a sixth PMI feedback parameter, where the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams; a seventh PMI feedback parameter, where the seventh PMI feedback parameter is used to indicate a relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer and other layers; an eighth PMI feedback parameter, where the eighth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR; A ninth PMI feedback parameter, where the ninth PMI feedback parameter is used to adjust a relative amplitude of the broadband.

8. The channel state information reporting method according to claim 7, characterized in that: The second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same.

9. The channel state information reporting method according to claim 7, characterized in that: The second PMI feedback parameter group includes one sixth PMI feedback parameter or multiple sixth PMI feedback parameters; The sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams of the same transmitting and receiving point / remote radio head; The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the first dimension, the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the second dimension, and / or the number of beams selected by the multiple different transmitting and receiving points / radio frequency remote heads.

10. The channel state information reporting method according to claim 1, wherein: The V matrices corresponding to the respective CMRs in the at least one CMR are different, and the PMI feedback parameter is carried in the X1 information field or the X2 information field; The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

11. The channel state information reporting method according to claim 10, characterized in that: The first broadband PMI feedback parameters carried in the X1 information field include: A first PMI feedback parameter, where the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; or A second PMI feedback parameter, where the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; or A third PMI feedback parameter is used to indicate a relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers.

12. The channel state information reporting method according to claim 10, characterized in that: The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

13. The channel state information reporting method according to claim 11, characterized in that: The first broadband PMI feedback parameter carried in the X1 information field includes a plurality of different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs; or The first broadband PMI feedback parameter carried in the X1 information field includes a plurality of different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs; or The first broadband PMI feedback parameter carried in the X1 information field includes a plurality of different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

14. The channel state information reporting method according to claim 1, wherein: The V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameter includes at least one of the following: a fifth PMI feedback parameter, the fifth PMI feedback parameter being determined based on the first-dimension oversampling number / the first-dimension beam number and the second-dimension oversampling number / the second-dimension beam number; a sixth PMI feedback parameter, where the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams; a seventh PMI feedback parameter, where the seventh PMI feedback parameter is used to indicate a relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer and other layers; A ninth PMI feedback parameter, where the ninth PMI feedback parameter is used to adjust a relative amplitude of the broadband.

15. The channel state information reporting method according to claim 14, characterized in that: The PMI feedback parameters include: a plurality of different fifth PMI feedback parameters, each of which corresponds to a different CMR; and / or a plurality of different sixth PMI feedback parameters, where different sixth PMI feedback parameters correspond to different CMRs; and / or a plurality of different seventh PMI feedback parameters, where different seventh PMI feedback parameters correspond to different CMRs; and / or There are multiple different ninth PMI feedback parameters, and different ninth PMI feedback parameters correspond to different CMRs.

16. A channel state information reporting method, characterized in that: Applicable to network equipment, including: Acquire channel state information reported by the terminal, where the channel state information includes a measurement result based on at least one channel measurement resource (CMR), and the measurement result includes a precoding matrix indicator (PMI) shared by the at least one CMR; Wherein, the PMI includes one or more PMI feedback parameters; There is a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

17. The channel state information reporting method according to claim 16, characterized in that: Each CMR in the at least one CMR corresponds to a CMR resource set, and at least two different CMRs correspond to different CMR resource sets.

18. The channel state information reporting method according to claim 17, characterized in that: The CMR resource set corresponds to resource parameters, which include one or more of a control resource set pool index, a transmitting and receiving point, and a remote radio head. Different CMR resource sets correspond to different resource parameters.

19. The channel state information reporting method according to claim 16, wherein: The first broadband PMI feedback parameter carried in the X1 information field includes a first PMI feedback parameter group; The first PMI feedback parameter group includes at least one of the following: A first PMI feedback parameter, where the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; A second PMI feedback parameter, where the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; a third PMI feedback parameter, where the third PMI feedback parameter is used to indicate a relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers; A fourth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR.

20. The channel state information reporting method according to claim 19, characterized in that: The first PMI feedback parameter group includes a first PMI feedback parameter, and the first PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The first PMI feedback parameter group includes a second PMI feedback parameter, and the second PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The first PMI feedback parameter group includes a third PMI feedback parameter, and the third PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same.

21. The channel state information reporting method according to claim 16, wherein: The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used for at least one of the following: selecting a beam, determining a phase offset, indicating the position of a selected frequency domain unit, and indicating a non-zero coefficient position.

22. The channel state information reporting method according to claim 16, characterized in that: The first broadband PMI feedback parameter carried in the X1 information field includes a second PMI feedback parameter group; The second PMI feedback parameter group includes at least one of the following: a fifth PMI feedback parameter, the fifth PMI feedback parameter being determined based on the first-dimension oversampling number / the first-dimension beam number and the second-dimension oversampling number / the second-dimension beam number; a sixth PMI feedback parameter, where the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams; a seventh PMI feedback parameter, where the seventh PMI feedback parameter is used to indicate a relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer and other layers; an eighth PMI feedback parameter, where the eighth PMI feedback parameter indicates a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR; A ninth PMI feedback parameter, where the ninth PMI feedback parameter is used to adjust a relative amplitude of the broadband.

23. The channel state information reporting method according to claim 22, characterized in that: The second PMI feedback parameter group includes a fifth PMI feedback parameter, and the fifth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The second PMI feedback parameter group includes a sixth PMI feedback parameter, and the sixth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The second PMI feedback parameter group includes a seventh PMI feedback parameter, and the seventh PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same; and / or The second PMI feedback parameter group includes a ninth PMI feedback parameter, and the ninth PMI feedback parameters corresponding to at least two CMRs in the at least one CMR are the same.

24. The channel state information reporting method according to claim 23, characterized in that: The second PMI feedback parameter group includes one sixth PMI feedback parameter or multiple sixth PMI feedback parameters; The sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams of the same transmitting and receiving point / remote radio head; The multiple sixth PMI feedback parameters are determined based on the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the first dimension, the number of antenna ports of the multiple different transmitting and receiving points / radio frequency remote heads in the second dimension, and / or the number of beams selected by the multiple different transmitting and receiving points / radio frequency remote heads.

25. The channel state information reporting method according to claim 16, characterized in that: The V matrices corresponding to the respective CMRs in the at least one CMR are different, and the PMI feedback parameter is carried in the X1 information field or the X2 information field; The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

26. The channel state information reporting method according to claim 25, characterized in that: The first broadband PMI feedback parameters carried in the X1 information field include: A first PMI feedback parameter, where the first PMI feedback parameter is determined based on the number of antenna ports in the first dimension and the number of oversampling in the first dimension, or the number of antenna ports in the first dimension and the number of beams in the first dimension; or A second PMI feedback parameter, where the second PMI feedback parameter is determined based on the number of antenna ports in the second dimension and the number of oversampling in the second dimension, or the number of antenna ports in the second dimension and the number of beams in the second dimension; or A third PMI feedback parameter is used to indicate a relative difference between the first PMI feedback parameter and / or the second PMI feedback parameter of the first layer and other layers.

27. The channel state information reporting method according to claim 25, characterized in that: The second wideband PMI feedback parameter or narrowband PMI feedback parameter carried in the X2 information field is used to select a beam or to determine a phase offset.

28. The channel state information reporting method according to claim 26, characterized in that: The first broadband PMI feedback parameter carried in the X1 information field includes a plurality of different first PMI feedback parameters, and different first PMI feedback parameters correspond to different CMRs; or The first broadband PMI feedback parameter carried in the X1 information field includes a plurality of different second PMI feedback parameters, and different second PMI feedback parameters correspond to different CMRs; or The first broadband PMI feedback parameter carried in the X1 information field includes a plurality of different third PMI feedback parameters, and different third PMI feedback parameters correspond to different CMRs.

29. The channel state information reporting method according to claim 16, wherein: The V matrices corresponding to the CMRs in the at least one CMR are different, and the PMI feedback parameter includes at least one of the following: a fifth PMI feedback parameter, the fifth PMI feedback parameter being determined based on the first-dimension oversampling number / the first-dimension beam number and the second-dimension oversampling number / the second-dimension beam number; a sixth PMI feedback parameter, where the sixth PMI feedback parameter is determined based on the number of antenna ports in the first dimension, the number of antenna ports in the second dimension, and / or the number of selected beams; a seventh PMI feedback parameter, where the seventh PMI feedback parameter is used to indicate a relative difference between the fifth PMI feedback parameter and / or the sixth PMI feedback parameter of the first layer and other layers; A ninth PMI feedback parameter, where the ninth PMI feedback parameter is used to adjust a relative amplitude of the broadband.

30. The channel state information reporting method according to claim 19, characterized in that: The PMI feedback parameters include: a plurality of different fifth PMI feedback parameters, each of which corresponds to a different CMR; and / or a plurality of different sixth PMI feedback parameters, where different sixth PMI feedback parameters correspond to different CMRs; and / or a plurality of different seventh PMI feedback parameters, where different seventh PMI feedback parameters correspond to different CMRs; and / or There are multiple different ninth PMI feedback parameters, and different ninth PMI feedback parameters correspond to different CMRs.

31. A channel state information reporting device, characterized in that: include: a measuring unit configured to measure channel state information based on at least one channel measurement resource CMR, where the channel state information includes a measurement result based on the at least one CMR measurement, and the measurement result includes a precoding matrix indicator PMI shared by the at least one CMR; a reporting unit, configured to report the channel state information; Wherein, the PMI includes one or more PMI feedback parameters; There is a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

32. A channel state information reporting device, characterized in that: include: an acquiring unit configured to acquire channel state information reported by a terminal, the channel state information including a measurement result based on at least one channel measurement resource CMR measurement, the measurement result including a precoding matrix indicator PMI shared by the at least one CMR; Wherein, the PMI includes one or more PMI feedback parameters; There is a phase offset between V matrices corresponding to at least two CMRs in the at least one CMR, and the PMI feedback parameter is carried in the X1 information field and / or the X2 information field; The X1 information field is used to carry a first wideband PMI feedback parameter, and the X2 information field is used to carry a second wideband PMI feedback parameter or a narrowband PMI feedback parameter.

33. A channel state information reporting device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to: execute the channel state information reporting method according to any one of claims 1 to 15.

34. A channel state information reporting device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to: execute the channel state information reporting method described in any one of claims 16 to 30.

35. A storage medium, characterized in that The storage medium stores instructions. When the instructions in the storage medium are executed by a processor of the terminal, the terminal is enabled to execute the channel state information reporting method according to any one of claims 1 to 15.

36. A storage medium, characterized in that The storage medium stores 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 channel state information reporting method described in any one of claims 16 to 30.

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