WO2025123365A1 - Communication method, network device, terminal, communication system, and storage medium - Google Patents

Abstract

The present disclosure relates to a communication method, a network device, a terminal, a communication system, and a storage medium. The method is executed by a network device, and comprises: configuring a plurality of channel state information reference signal (CSI-RS) resources, wherein the plurality of CSI-RS resources are used for performing channel measurement on M antenna ports of a terminal, and M is greater than 32; configuring codebook subset restrictions (CBSRs) for at least two of the plurality of CSI-RS resources, the CBSRs being used for indicating beam restrictions corresponding to the restricted CSI-RS resources; and sending a first indication to the terminal, wherein the first indication is used for indicating at least one piece of the following configuration information: CSI-RS resources for which CBSRs are configured; CSI-RS resources for which CBSRs are not configured; and CBSRs corresponding to the restricted CSI-RS resources. The use of the method can improve the system efficiency, enhance the coverage range, and reduce the downlink signaling overhead.

Description

Communication method, network device, terminal, communication system and storage medium Technical Field

The present disclosure relates to the field of communication technology, and in particular to a communication method, network equipment, terminal, communication system and storage medium.

Background Art

In order to further improve system efficiency or enhance coverage, increasing the number of antenna ports to expand the antenna scale is an important technical means to achieve this goal. However, the current communication standard can configure a channel status information reference signal (CSI-RS) resource, and the number of CSI-RS ports included in the CSI-RS resource supports 1, 2, 4, 8, 12, 16, 24 and 32.

Summary of the invention

The embodiments of the present disclosure provide a communication method, a network device, a terminal, a communication system and a storage medium.

According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a network device, and the method includes: configuring multiple channel state information reference signal CSI-RS resources, and the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of a terminal, wherein M is greater than 32; configuring a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, and the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resource; sending a first indication to the terminal, and the first indication is used to indicate at least one of the following configuration information: a CSI-RS resource configured with a CBSR; a CSI-RS resource not configured with a CBSR; and a CBSR corresponding to the constrained CSI-RS resource.

According to the second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal, and the method includes: obtaining a first indication sent by a network device, wherein the first indication is used to determine any one of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources; determining the beam selection and/or beam amplitude for CSI reporting according to the first indication; and based on the reception of the multiple CSI-RS resources sent by the network device, reporting CSI reports for M antenna ports, wherein M is greater than 32.

According to a third aspect of an embodiment of the present disclosure, a network device is provided, including:

A processing module, configured to configure multiple channel state information reference signal CSI-RS resources, where the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal, where M is greater than 32; and configure a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, where the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resource;

The transceiver module is used to send a first indication to the terminal, where the first indication is used to indicate at least one of the following configuration information: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to constrained CSI-RS resources.

According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, including:

A transceiver module, configured to obtain a first indication sent by a network device, wherein the first indication is used to determine any of the following configuration information corresponding to multiple CSI-RS resources: a CSI-RS resource configured with a CBSR; a CSI-RS resource not configured with a CBSR; a CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resource;

A processing module, configured to determine beam selection and/or beam amplitude for CSI reporting according to the first indication;

The transceiver module is further used to report CSI reports of M antenna ports based on reception of the multiple CSI-RS resources sent by the network device, where M is greater than 32.

According to the fifth aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; a memory coupled to the processor, wherein executable instructions are stored in the memory, and when the executable instructions are executed by the processor, the network device executes the communication method described in the first aspect.

According to the sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; a memory coupled to the processor, wherein executable instructions are stored in the memory, and when the executable instructions are executed by the processor, the terminal executes the communication method described in the second aspect.

According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a network device, wherein the network device is configured to implement the communication method described in the first aspect, and the terminal is configured to implement the communication method described in the second aspect.

According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions. When the instruction is executed on a communication device, the communication device is caused to execute the communication method described in the first aspect or the second aspect.

By adopting the above technical solution, at least the following beneficial technical effects can be achieved:

The network equipment configures multiple CSI-RS resources for the terminal, and based on the aggregated configuration of multiple CSI-RS resources, it can perform channel measurement on more than 32 antenna ports of the terminal, which can improve system efficiency and enhance coverage.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for describing the embodiments are introduced below. The following drawings are only some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

FIG. 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

FIG2B is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

FIG. 3A is a flow chart of a communication method according to an embodiment of the present disclosure.

FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure.

FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure.

FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure.

FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure.

FIG4C is a flow chart of a communication method according to an embodiment of the present disclosure.

FIG. 5 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

FIG. 6 is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.

FIG. 7 is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.

FIG8A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure.

FIG8B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure provide a communication method, a network device, a terminal, a communication system and a storage medium.

In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: configuring multiple channel state information reference signal CSI-RS resources, and the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of a terminal, wherein M is greater than 32; configuring a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, and the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources; sending a first indication to the terminal, and the first indication is used to indicate at least one of the following configuration information: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to the constrained CSI-RS resources.

In the above embodiment, the network device configures multiple CSI-RS resources for the terminal, and based on the aggregated configuration of multiple CSI-RS resources, can perform channel measurement on more than 32 antenna ports of the terminal, which can improve system efficiency and enhance coverage.

In combination with some embodiments of the first aspect, in some embodiments, configuring a codebook subset constrained CBSR for at least two CSI-RS resources among the multiple CSI-RS resources includes: configuring at least two CBSRs, one CBSR corresponding to one constrained CSI-RS resource.

In the above embodiment, when multiple CSI-RS resources are configured for the terminal, a CBSR can be separately configured for each constrained CSI-RS resource to perform beam constraints on the resource, thereby avoiding beam interference between adjacent cells or users and improving the accuracy of channel measurement.

In combination with some embodiments of the first aspect, in some embodiments, configuring a codebook subset constrained CBSR for at least two CSI-RS resources among the multiple CSI-RS resources includes: configuring a CBSR, and at least two constrained CSI-RS resources share one CBSR.

In the above embodiment, when multiple CSI-RS resources are configured for the terminal, the codebook subset constraint configurations corresponding to the multiple CSI-RS resources may be configured to share the same CBSR to reduce bit indication and thus reduce downlink signaling indication overhead.

In combination with some embodiments of the first aspect, in some embodiments, the configuring of at least two CBSRs includes: configuring a first bit sequence _B1 and a second bit sequence _B2,1 for a first constrained CSI-RS resource, wherein _B1 is used to determine a beam group selection indication, and _B2,1 is used to determine an amplitude constraint of each beam in a selected beam group, and the first constrained CSI-RS resource is a resource that meets a first condition among at least two constrained CSI-RS resources; and the CBSR of the first constrained CSI-RS resource includes _B1 and _B2,1 .

Optionally, the first condition includes any one of a minimum CSI-RS resource ID, a maximum CSI-RS resource ID, and a predefined CSI-RS resource ID.

In the above embodiment, when a CBSR is separately configured for each constrained CSI-RS resource, it can be standardized that a resource configuration that meets the first condition in the constrained CSI-RS resource includes CBSRs of B ₁ and B _2,1 .

In combination with some embodiments of the first aspect, in some embodiments, the configuring of at least two CBSRs includes: configuring a third bit sequence B _2,2 for determining an amplitude constraint of each beam for a second constrained CSI-RS resource, the second constrained CSI-RS resource being any resource of the at least two constrained CSI-RS resources except the first constrained CSI-RS resource; the CBSR of the second constrained CSI-RS resource includes B _2,2 , and the beam group selection indication of the second constrained CSI-RS resource reuses B ₁ .

In the above embodiment, when a CBSR is configured for each constrained CSI-RS resource separately, and a CBSR including B ₁ and B _2,1 is configured for a resource in the constrained CSI-RS resource that meets the first condition, a CBSR including B _2,2 may be configured for the second constrained CSI-RS resource. In this way, bit resource overhead can be reduced, and downlink signaling indication overhead for indicating the CBSR can be reduced.

In combination with some embodiments of the first aspect, in some embodiments, a CBSR includes a fourth bit sequence B ₀ , where the fourth bit sequence B ₀ is used to indicate a corresponding relationship between the CBSR and the constrained CSI-RS resources.

In the above embodiment, when a CBSR is separately configured for each constrained CSI-RS resource, the CSI-RS resource corresponding to the CBSR can be indicated by configuring B ₀ in the CBSR.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes: pre-setting an arrangement order of multiple CBSRs in a CBSR configuration linked list to correspond one-to-one with an arrangement order of multiple constrained CSI-RS resources in a constrained CSI-RS resource sequence, wherein the number of sequence dimensions of the constrained CSI-RS resource sequence is determined according to a parameter Mg1 pre-configured by the network device, and the number of resources that can be arranged in each sequence dimension is determined according to a parameter Ng1 pre-configured by the network device.

In the above embodiments, the correspondence between a plurality of CBSRs and a plurality of constrained CSI-RS resources that can be pre-configured or specified is regulated.

In combination with some embodiments of the first aspect, in some embodiments, configuring a CBSR includes: configuring a first bit sequence _B1 for a first constrained CSI-RS resource, wherein _B1 is used to determine a beam group selection indication, and the first constrained CSI-RS resource is a resource that meets the first condition among at least two constrained CSI-RS resources; configuring a second bit sequence _B2 for at least two constrained CSI-RS resources, wherein _B2 is used to determine an amplitude constraint of each beam in a beam group corresponding to each constrained CSI-RS resource; and a CBSR shared by at least two constrained CSI-RS resources includes _B1 and _B2 .

In the above embodiment, when the codebook subset constraint configurations corresponding to multiple CSI-RS resources share the same CBSR, the amplitude constraints corresponding to the multiple CSI-RS resources and the common beam group selection indication can be configured to reduce the bit overhead, thereby reducing the downlink indication signaling overhead.

In conjunction with some embodiments of the first aspect, in some embodiments, _B1 includes bits, where _O1 represents the oversampling factor of the horizontal dimension, _O2 represents the oversampling factor of the vertical dimension, and P represents the number of beam groups selected from _{O1 to O2} beam groups.

In the above embodiment, the number of bits of _B1 is standardized.

In combination with some embodiments of the first aspect, in some embodiments, B _2,1 includes xPN _1,1 N _2,1 bits, N _1,1 represents the number of antenna ports in the horizontal dimension corresponding to the CSI-RS resource of the first constraint, N _2,1 represents the number of antenna ports in the vertical dimension corresponding to the CSI-RS resource of the first constraint, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, The LSB (Least Significant Bit) representing the k-th bit sequence, Represents the most significant bit (MSB) of the k-th bit sequence.

In the above embodiment, the number of bits of B _2,1 and the concatenation of P bit sequences corresponding to B _2,1 are standardized.

In combination with some embodiments of the first aspect, in some embodiments, B _2,2 includes xPN _1,2 N _2,2 bits, N _1,2 represents the number of antenna ports in the horizontal dimension corresponding to the CSI-RS resource of the second constraint, N _2,2 represents the number of antenna ports in the vertical dimension corresponding to the CSI-RS resource of the second constraint, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In the above embodiment, the number of bits of B _2,2 and the concatenation of P bit sequences corresponding to B _2,2 are standardized.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N _2,j bits, I represents the total number of constrained CSI-RS resources, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In the above embodiment, a method for calculating the number of bits of B ₂ and a cascade of P bit sequences corresponding to B ₂ are provided.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N ₂ bits, I represents the total number of constrained CSI-RS resources, N ₂ represents the number of antenna ports in the preconfigured vertical dimension, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In the above embodiment, another method for calculating the number of bits of B ₂ and the concatenation of P bit sequences corresponding to B ₂ are provided.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xPN _1,j (N _2,1 +N _2,2 +…+N _2,I ) bits, I represents the total number of constrained CSI-RS resources, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In the above embodiment, another method for calculating the number of bits of B ₂ and the concatenation of P bit sequences corresponding to B ₂ are provided.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xPN ₁ (N _2,1 +N _2,2 +…+N _2,I ) bits, I represents the total number of constrained CSI-RS resources, N ₁ represents the number of antenna ports in the pre-allocated horizontal dimension, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In the above embodiment, another method for calculating the number of bits of B ₂ and the concatenation of P bit sequences corresponding to B ₂ are provided.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 ) bits, where x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, Ng1 represents the number of antenna ports in the horizontal dimension, and Mg1 represents the number of antenna ports in the vertical dimension.

In the above embodiment, another method for calculating the number of bits of B ₂ and the concatenation of P bit sequences corresponding to B ₂ are provided.

In combination with some embodiments of the first aspect, in some embodiments, configuring at least two CBSRs includes: configuring a CBSR for each constrained CSI-RS resource, and the sequence length of the CBSR corresponding to the i-th constrained CSI-RS resource is N _1,i N _2,i O ₁ O ₂ , where N _1,i represents the number of antenna ports in the horizontal dimension corresponding to the i-th constrained CSI-RS resource, N _2,i represents the number of antenna ports in the vertical dimension corresponding to the i-th constrained CSI-RS resource, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In the above embodiment, when one CBSR is configured for each constrained CSI-RS resource, the sequence length of the CBSR corresponding to the i-th constrained CSI-RS resource is standardized as N _1,i N _2,i O ₁ O ₂ .

In conjunction with some embodiments of the first aspect, in some embodiments, configuring a CBSR includes:

A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,I )N _2,j O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In the above embodiment, when one CBSR is configured for multiple CSI-RS resources, the sequence length of the shared CBSR is standardized as (N _1,1 +N _1,2 + . . . +N _1,I )N _2,j O ₁ O ₂ .

In conjunction with some embodiments of the first aspect, in some embodiments, configuring a CBSR includes:

A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,I )N ₂ O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N ₂ represents the number of pre-allocated antenna ports in the vertical dimension, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In the above embodiment, when one CBSR is configured for multiple CSI-RS resources, the sequence length of the shared CBSR is standardized as (N _1,1 +N _1,2 + . . . +N _1,I )N ₂ O ₁ O ₂ .

In conjunction with some embodiments of the first aspect, in some embodiments, configuring a CBSR includes:

A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is N _1,j (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In the above embodiment, when one CBSR is configured for multiple CSI-RS resources, the sequence length of the shared CBSR is standardized as N _1,j (N _2,1 +N _2,2 + . . . +N _2,I )O ₁ O ₂ .

In conjunction with some embodiments of the first aspect, in some embodiments, configuring a CBSR includes:

A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is N ₁ (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N ₁ represents the number of pre-allocated antenna ports in the horizontal dimension, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In the above embodiment, when one CBSR is configured for multiple CSI-RS resources, the sequence length of the shared CBSR is standardized to be N ₁ (N _2,1 +N _2,2 + . . . +N _2,I )O ₁ O ₂ .

In conjunction with some embodiments of the first aspect, in some embodiments, configuring a CBSR includes:

A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 )O ₁ O ₂ , where O ₁ represents an oversampling factor in the horizontal dimension, and O ₂ represents an oversampling factor in the vertical dimension.

In the above embodiment, when one CBSR is configured for multiple CSI-RS resources, the sequence length of the shared CBSR is standardized as (N _1,1 +N _1,2 + ... +N _1,Ng1 )(N _2,1 +N _2,2 + ... +N _2,Mg1 )O ₁ O ₂ .

In a second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a terminal, and the method includes: obtaining a first indication sent by a network device, wherein the first indication is used to determine any one of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources; determining the beam selection and/or beam amplitude for CSI reporting according to the first indication; and based on the reception of the multiple CSI-RS resources sent by the network device, reporting CSI reports for M antenna ports, wherein M is greater than 32.

In the above embodiment, CSI reports for more than 32 antenna ports are reported.

In combination with some embodiments of the first aspect, in some embodiments, determining the beam selection and/or beam amplitude for CSI reporting according to the first indication includes:

At least two CBSRs are determined according to the first indication, and one CBSR corresponds to one constrained CSI-RS resource.

In combination with some embodiments of the first aspect, in some embodiments, determining the beam selection and/or beam amplitude for CSI reporting according to the first indication includes:

A CBSR is determined according to the first indication, and at least two constrained CSI-RS resources share one CBSR.

In combination with some embodiments of the first aspect, in some embodiments, the CBSR of the first constrained CSI-RS resource includes a first bit sequence _B1 and a second bit sequence _B2,1 , wherein _B1 is used to determine the beam group selection indication, _{and B2,1} is used to determine the amplitude constraint of each beam in the selected beam group, and the first constrained CSI-RS resource is a resource that meets the first condition among the at least two constrained CSI-RS resources;

The determining at least two CBSRs according to the first indication comprises:

B ₁ and B _2,1 are determined according to the first indication.

In combination with some embodiments of the first aspect, in some embodiments, the CBSR of the second constrained CSI-RS resource includes a third bit sequence B _2,2 for determining an amplitude constraint of each beam, and the beam group selection indication multiplexing B ₁ of the second constrained CSI-RS resource is any resource of the at least two constrained CSI-RS resources except the first constrained CSI-RS resource;

The determining at least two CBSRs according to the first indication comprises:

B _2,2 is determined according to the first indication.

In conjunction with some embodiments of the first aspect, in some embodiments, a CBSR includes a fourth bit sequence B ₀ ;

The determining, according to the first indication, beam selection and/or beam amplitude for CSI reporting further includes:

Determine a constrained CSI-RS resource corresponding to the CBSR according to the fourth bit sequence _B0 .

In combination with some embodiments of the first aspect, in some embodiments, determining the beam selection and/or beam amplitude for CSI reporting according to the first indication further includes:

Determine a parameter Ng1 and a parameter Mg1 according to the first indication, wherein Mg1 represents the number of sequence dimensions of the constrained CSI-RS resource sequence, and Ng1 represents the number of resources that can be arranged in each sequence dimension;

According to the preset one-to-one correspondence between Ng1, Mg2, and the arrangement order of multiple CBSRs in the CBSR configuration list and the arrangement order of multiple constrained CSI-RS resources in the constrained CSI-RS resource sequence, the constrained CSI-RS resources corresponding to each CBSR are determined.

In combination with some embodiments of the first aspect, in some embodiments, a CBSR shared by at least two constrained CSI-RS resources includes a first bit sequence _B1 and a second bit sequence _B2 , _B1 is configured according to the first constrained CSI-RS resource, _B1 is used to determine a beam group selection indication, the first constrained CSI-RS resource is a resource that meets a first condition among the at least two constrained CSI-RS resources, _B2 is configured according to the at least two constrained CSI-RS resources, and _B2 is used to determine an amplitude constraint of each beam in a beam group corresponding to each constrained CSI-RS resource;

The determining a CBSR according to the first indication includes:

_B1 and _B2 are determined according to the first indication.

In conjunction with some embodiments of the first aspect, in some embodiments, _B1 includes bits, where _O1 represents the oversampling factor of the horizontal dimension, _O2 represents the oversampling factor of the vertical dimension, and P represents the number of beam groups selected from _{O1 to O2} beam groups.

In combination with some embodiments of the first aspect, in some embodiments, B _2,1 includes xPN _1,1 N _2,1 bits, N _1,1 represents the number of antenna ports in the horizontal dimension corresponding to the CSI-RS resource of the first constraint, N _2,1 represents the number of antenna ports in the vertical dimension corresponding to the CSI-RS resource of the first constraint, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, B _2,2 includes xPN _1,2 N _2,2 bits, N _1,2 represents the number of antenna ports in the horizontal dimension corresponding to the CSI-RS resource of the second constraint, N _2,2 represents the number of antenna ports in the vertical dimension corresponding to the CSI-RS resource of the second constraint, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N _2,j bits, I represents the total number of constrained CSI-RS resources, and N _2,j represents the number of antennas in the vertical dimension corresponding to the jth constrained CSI-RS resource. The number of ports, j = 1, 2, 3 ... I, k represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N ₂ bits, I represents the total number of constrained CSI-RS resources, N ₂ represents the number of pre-allocated antenna ports in the vertical dimension, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xPN _1,j (N _2,1 +N _2,2 +…+N _2,I ) bits, I represents the total number of constrained CSI-RS resources, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xPN ₁ (N _2,1 +N _2,2 +…+N _2,I ) bits, I represents the total number of constrained CSI-RS resources, N ₁ represents the number of antenna ports in the pre-allocated horizontal dimension, and x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 ) bits, where x represents the number of bits used to constrain the amplitude of a beam;

That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence.

In combination with some embodiments of the first aspect, in some embodiments, the sequence length of the CBSR corresponding to the i-th constrained CSI-RS resource is N _1,i N _2,i O ₁ O ₂ , wherein N _1,i represents the number of antenna ports in the horizontal dimension corresponding to the i-th constrained CSI-RS resource, N _2,i represents the number of antenna ports in the vertical dimension corresponding to the i-th constrained CSI-RS resource, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension.

In combination with some embodiments of the first aspect, in some embodiments, the sequence length of a CBSR shared by at least two constrained CSI-RS resources is (N _1,1 +N _1,2 +…+N _1,I )N _2,j O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension.

In combination with some embodiments of the first aspect, in some embodiments, the sequence length of a CBSR shared by at least two constrained CSI-RS resources is (N _1,1 +N _1,2 +…+N _1,I )N ₂ O ₁ O ₂ , wherein I represents the total number of constrained CSI-RS resources, N ₂ represents the number of pre-allocated antenna ports in the vertical dimension, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In combination with some embodiments of the first aspect, in some embodiments, the sequence length of a CBSR shared by at least two constrained CSI-RS resources is N _1,j (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In combination with some embodiments of the first aspect, in some embodiments, at least two constrained CSI-RS resources share one The sequence length of CBSR is N ₁ (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ , where I represents the total number of constrained CSI-RS resources, N ₁ represents the number of pre-allocated antenna ports in the horizontal dimension, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension.

In combination with some embodiments of the first aspect, in some embodiments, the sequence length of a CBSR shared by at least two constrained CSI-RS resources is (N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 )O ₁ O ₂ , where O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension.

In a third aspect, an embodiment of the present disclosure proposes a network device, which includes at least one of a transceiver module and a processing module; wherein the network device is used to execute the optional implementation method of the first aspect.

In a fourth aspect, an embodiment of the present disclosure proposes a terminal, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute an optional implementation method of the second aspect.

In a fifth aspect, an embodiment of the present disclosure proposes a network device, which includes one or more processors; a memory coupled to the processor, wherein the memory stores executable instructions, and when the executable instructions are executed by the processor, the network device executes the optional implementation method of the first aspect.

In a sixth aspect, an embodiment of the present disclosure proposes a terminal, which includes one or more processors; a memory coupled to the processor, on which executable instructions are stored, and when the executable instructions are executed by the processor, the terminal executes the optional implementation method of the second aspect.

In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a network device and a terminal; wherein the network device is configured to execute the method described in the optional implementation manner of the first aspect, and the terminal is configured to execute the method described in the optional implementation manner of the second aspect.

In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

It is understandable that the above network devices, terminals, communication systems, storage media, program products, computer programs, chips or chip systems are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be repeated here.

The embodiments of the present disclosure provide a communication method, a network device, a terminal, a communication system, and a storage medium. In some embodiments, the terms communication method, information processing method, codebook subset constraint configuration method, etc. can be replaced with each other, and the terms communication system, information processing system, codebook subset constraint configuration system, etc. can be replaced with each other.

The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun after the article may be understood as a singular expression or a plural expression.

In the embodiments of the present disclosure, “plurality” refers to two or more.

In some embodiments, "at least one of", "one or more of" The terms "one or more", "a plurality of", "multiple" and the like can be used interchangeably.

In some embodiments, "at least one of A and B", "A and/or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.

In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar.

The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects. The statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields", and the "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" may be the same information or different information, and their contents may be the same or different.

In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, terms such as "time/frequency", "time/frequency domain", etc. refer to the time domain and/or the frequency domain.

In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably.

In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

In some embodiments, the terms "access network device (AN device), "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission and/or reception point (transmission/reception point, TRP)", "panel", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell", "macro cell (macro cell)", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell)", "serving cell", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part, BWP)" and the like can be used interchangeably.

In some embodiments, the term “terminal”, “terminal device”, “user equipment (UE)”, “user terminal”, “mobile station (MS)”, “mobile terminal (MT)”, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote The terms remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. may be used interchangeably.

In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.

In some embodiments, acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

In some embodiments, data, information, etc. may be obtained with the user's consent.

In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.

Although the operations are described in a specific order in the accompanying drawings in the disclosed embodiments, it should not be understood that it is required to perform these operations in the specific order shown or in a serial order, or to perform all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous. In addition, sending multiple information through the same message is also advantageous.

FIG1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the communication system 100 may include a terminal 101 and a network device 102 .

In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited to these.

In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

Optionally, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

In some embodiments, the network device 102 is a base station. Optionally, the base station is, for example, a macro base station, a micro base station (also called a small station), a relay station, an access point, a 5G base station or a future base station, a satellite, a transmission point (Transmitting and Receiving Point, TRP), a transmission point (Transmitting Point, TP), a mobile switching center, or other devices that assume the function of a base station in a communication system, etc., which are not specifically limited in the embodiments of the present disclosure. For the convenience of description, in all embodiments of the present disclosure, the devices that provide wireless communication functions for terminal devices are collectively referred to as network devices or base stations.

In some embodiments, the network device 102 is a core network device. The core network device may be a device including a first network element, a second network element, etc., or may be a plurality of devices or a group of devices, including all or part of the first network element, the second network element, etc. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

In some embodiments, the technical solution of the present disclosure may be applicable to the Open RAN architecture. In this case, the embodiments of the present disclosure involve The interfaces between or within access network devices can become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

In some embodiments, the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit). The CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.

It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto. The subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.

The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access ... The present invention relates to wireless communication systems such as LTE, Wi-Fi (X), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device to Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle to Everything (V2X), systems using other communication methods, and next-generation systems expanded based on them. In addition, a combination of multiple systems (for example, a combination of LTE or LTE-A with 5G, etc.) may also be applied.

In some embodiments, in order to further improve system efficiency or enhance coverage, increasing the number of antenna ports to expand the antenna scale is an important technical means to achieve this goal. In current commercial deployments, the antenna scale can be further expanded to 4 times the original size. For example, it is necessary to support 64 or 128 CSI-RS ports to achieve channel measurement for 64 or 128 antenna ports. However, the current standard only supports 1, 2, 4, 8, 12, 16, 24 and 32 CSI-RS ports that can be configured in a CSI-RS resource. In order to achieve channel measurement that supports 64 or 128 CSI-RS ports, the network side can configure multiple CSI-RS resources for the UE, and based on the aggregate configuration of multiple CSI-RS resources, channel measurements of 64 or 128 ports can be measured.

In some embodiments, in order to avoid beam interference between adjacent cells or users, the network device indicates to the terminal through RRC (Radio Resource Control) signaling that some beams cannot be used for PMI (Precoding Matrix Indicator) calculation or feedback. For example, for Rel-15 Type I codebook, each beam can be indicated by a bitmap of size N ₁ N ₂ O ₁ O ₂ , and the configuration method is as follows:

Wherein, _N1 represents the number of ports in the horizontal dimension, _N2 represents the number of ports in the vertical dimension, _O1 and _O2 represent the oversampling factors of the horizontal dimension and the vertical dimension respectively, _O1 =4, _O2 =1 or 4.

In some embodiments, unlike the Rel-15 Type I codebook, the Rel-15 Type II or Rel-16 Type II codebook includes multiple beams and combination coefficients of the corresponding beams. Therefore, the codebook subset constraint configuration method of Type II is different from the codebook subset constraint of Type I codebook. The codebook subset constraint of Type II codebook is configured by The bitmap indicates that It means that P = 4 beam groups are selected from O ₁ O ₂ orthogonal beam groups for constraint. Then, the amplitude constraint value of the broadband coefficient corresponding to each beam in each beam group is indicated by 2 bits (Rel-15 Type II codebook), or the amplitude constraint of the average coefficient corresponding to the beam (Rel-16 Type II codebook). For example, the codebook parameter N ₁ and N ₂ value configuration method corresponding to the Rel-16 Type II codebook is shown below:

FIG2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method, and the method includes:

Step S2101, the network device 102 configures multiple CSI-RS resources.

In some embodiments, multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal. Optionally, M is a natural number greater than 32. For example, M is any value among 48, 64, 72, 96, and 128.

In step S2102, the network device 102 configures at least two CBSRs for at least two CSI-RS resources among the multiple CSI-RS resources, and one CBSR corresponds to one constrained CSI-RS resource.

In some embodiments, CBSR refers to codebook subset restriction.

In some embodiments, the network device 102 configures a codebook subset constraint CBSR for at least two CSI-RS resources among the plurality of CSI-RS resources, wherein one CBSR corresponds to one constrained CSI-RS resource.

In some embodiments, the constrained CSI-RS resource representation is configured with a CSI-RS resource of a CBSR, or the constrained CSI-RS resource representation will configure a CSI-RS resource of a CBSR.

Optionally, the CBSR is used to indicate the beam constraint of the corresponding CSI-RS resource. Optionally, the beam constraint includes an amplitude constraint for each beam and the beam specified by the constraint is used to calculate the PMI.

The following describes how to configure a CBSR corresponding to each constrained CSI-RS resource in the embodiments of the present disclosure based on the codebook subset constraint configuration principle enhanced by the Rel-15/16 Type II codebook.

In some embodiments, an implementation method of configuring at least two CBSRs by a network device includes: configuring a first bit sequence B ₁ and a second bit sequence B _2,1 for a first constrained CSI-RS resource, and obtaining a CBSR of the first constrained CSI-RS resource including B ₁ and B _2,1 . Optionally, the CBSR of the first constrained CSI-RS resource = B ₁ B _2,1 . Optionally, B ₁ is used to indicate a beam group selection indication of the first constrained CSI-RS resource. Optionally, B _2,1 is used to determine the amplitude constraints of each beam in the selected beam group. Optionally, the first constrained CSI-RS resource is a resource that meets the first condition among the at least two constrained CSI-RS resources.

In some embodiments, B represents a bit sequence.

In some embodiments, the first condition may be any one of the following: the CSI-RS resource ID is the smallest, the CSI-RS resource ID is the largest, Predefined specified CSI-RS resource ID. For example, the first constrained CSI-RS resource may be a resource with the largest ID among multiple CSI-RS resources. For example, the first constrained CSI-RS resource may be a resource with the smallest ID among multiple CSI-RS resources. For example, the first constrained CSI-RS resource may be a predefined specified CSI-RS resource from multiple CSI-RS resources.

In some embodiments, the name of the first condition is not limited, and it can be, for example, a preset condition, a specific condition, etc.

Optionally, the first condition may be indicated to the terminal by the network device. Optionally, the first condition may be determined by the terminal according to a protocol provision. Optionally, the first condition may be a default condition.

In some embodiments, the network device configures at least two CBSRs, including: configuring a third bit sequence B _2,2 for determining the amplitude constraints of each beam corresponding to the second constrained CSI-RS resource. Optionally, the second constrained CSI-RS resource is any resource of the at least two constrained CSI-RS resources except the first constrained CSI-RS resource. Optionally, the CBSR of the second constrained CSI-RS resource includes B _2,2 , and the beam group selection indication of the second constrained CSI-RS resource reuses B ₁ . Optionally, the CBSR of the second constrained CSI-RS resource = B _2,2 .

For example, assuming that the configured CSI-RS resources are _RA , _RB , _RC , and _RD , and all resources are configured with CBSR, assuming that _RA is the CSI-RS resource of the first constraint, then the CSI-RS resource of the second constraint may refer to any one of _RB , _RC , and _RD . The configuration method of CBSR of _RB , _RC , and _RD is the same.

In some embodiments, a CBSR includes a fourth bit sequence B ₀ , and the fourth bit sequence B ₀ is used to indicate the corresponding relationship between the CBSR and the constrained CSI-RS resources.

For example, the CBSR of the first constrained CSI-RS resource is B ₀ B ₁ B _2,1 .

For example, CBSR of the second constrained CSI-RS resource is B ₀ B _2,2 .

In some embodiments, the communication method disclosed herein also includes: pre-setting an arrangement order of multiple CBSRs in a CBSR configuration linked list to correspond one-to-one with an arrangement order of multiple constrained CSI-RS resources in a constrained CSI-RS resource sequence, wherein the number of sequence dimensions of the constrained CSI-RS resource sequence is determined based on a parameter Mg1 pre-configured by the network device, and the number of resources that can be arranged in each sequence dimension is determined based on a parameter Ng1 pre-configured by the network device.

The pre-setting may refer to pre-protocol provision, pre-configuration, or default configuration.

In some embodiments, the parameter Mg1 may be understood as a pre-assigned vertical dimension parameter of the antenna panel Panel, and the parameter Ng1 may be understood as a pre-assigned horizontal dimension parameter of the Panel.

In some embodiments, assuming that Mg1=1, Ng1=4, the constrained CSI-RS resource sequence may be a one-dimensional sequence. Optionally, the constrained CSI-RS resource sequence may be obtained by arranging the resource IDs in a preset order. For example, the constrained CSI-RS resource sequence may be arranged in an ascending order of the resource IDs as a one-dimensional sequence: _RA , _RB , _RC , _RD .

In some embodiments, assuming that Mg1=2, Ng1=2, the constrained CSI-RS resource sequence may be a two-dimensional sequence. Optionally, the constrained CSI-RS resource sequence may be arranged in a preset order according to the resource ID. For example, the constrained CSI-RS resource sequence may be arranged in a two-dimensional sequence according to the arrangement of the resource ID from small to large: or Among them, the two-dimensional sequence Corresponding to the arrangement of horizontal sorting first and then vertical sorting, the two-dimensional sequence The corresponding arrangement is first vertical sorting and then horizontal sorting. In some embodiments, the two-dimensional sequence may also be wait.

In some embodiments, the first bit sequence _B1 includes bits. Optionally, _O1 represents an oversampling factor in the horizontal dimension, _O2 represents an oversampling factor in the vertical dimension, and P represents the number of beam groups selected from _{O1 to O2} beam groups. Optionally, _O1O2 represents _O1 × _O2 .

In some embodiments, the second bit sequence B _2,1 includes xPN _1,1 N _2,1 bits. Optionally, N _1,1 represents the number of antenna ports in the horizontal dimension corresponding to the first constrained CSI-RS resource. Optionally, N _2,1 represents the number of antenna ports in the vertical dimension corresponding to the first constrained CSI-RS resource. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

The bit sequence of B _2,1 is represented by That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k=0, 1, 2, 3...(P-1), and P represents the number of selected beam groups. Optionally, the value of P may be specified by a protocol or indicated by a network device configuration.

In some embodiments, N _{1,_} is a first parameter indicated by the network device, representing the number of antenna ports in the horizontal dimension. N _{2,_} is a second parameter indicated by the network device, representing the number of antenna ports in the vertical dimension. b represents a bit.

In some embodiments, the third bit sequence B _2,2 includes xPN _1,2 N _2,2 bits. Optionally, N _1,2 represents the number of antenna ports in the horizontal dimension corresponding to the second constrained CSI-RS resource. Optionally, N _2,2 represents the number of antenna ports in the vertical dimension corresponding to the second constrained CSI-RS resource. Optionally, x represents the number of bits used to constrain the amplitude of a beam. That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

The following describes how to configure a CBSR corresponding to each constrained CSI-RS resource in the embodiments of the present disclosure based on the codebook subset constraint configuration principle enhanced by the Rel-15 Type I codebook.

In some embodiments, the network device configures at least two CBSRs, including: configuring a CBSR for each constrained CSI-RS resource, and the sequence length of the CBSR corresponding to the i-th constrained CSI-RS resource is N _1,i N _2,i O ₁ O ₂ . Optionally, N _1,i represents the number of antenna ports in the horizontal dimension corresponding to the i-th constrained CSI-RS resource. Optionally, N _2,i represents the number of antenna ports in the vertical dimension corresponding to the i-th constrained CSI-RS resource. Optionally, O ₁ represents the oversampling factor of the horizontal dimension. Optionally, O ₂ represents the oversampling factor of the vertical dimension.

In some embodiments, when the total number of ports M is greater than 32, such as _PCSI-RS = 48, 64, 72, 96, or 128, correspondingly, possible combinations of (N ₁ , N ₂ ) and (O ₁ , O ₂ ) of any constrained CSI-RS resources are shown in Table 1.

Table 1

Step S2103 , the network device 102 sends a first indication to the terminal 101 .

In some embodiments, terminal 101 receives a first indication.

In some embodiments, the first indication may be RRC signaling or other higher layer signaling.

In some embodiments, the name of the first indication is not limited, and it may be, for example, a codebook subset constraint configuration indication, a channel measurement configuration indication, etc.

In some embodiments, the first indication is used to indicate at least one of the following configuration information corresponding to the multiple CSI-RS resources:

CSI-RS resources configured with CBSR;

CSI-RS resources for which CBSR is not configured;

CBSR corresponding to the constrained CSI-RS resource.

For example, the first indication is used to indicate which resources among the multiple CSI-RS resources are configured with CBSR.

For example, the first indication is used to indicate which resources among the multiple CSI-RS resources are not configured with CBSR.

For example, the first indication is used to indicate the CBSR corresponding to each constrained CSI-RS resource.

In some embodiments, the first indication is used by the terminal to determine any of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; at least two constrained CSI-RS resources respectively Corresponding CBSR.

It should be noted here that no constraints are imposed on the beams corresponding to CSI-RS resources that are not configured with CBSR.

Step S2104: The terminal 101 determines a CBSR corresponding to each constrained CSI-RS resource according to the first indication.

In some embodiments, the terminal determines a CBSR corresponding to each constrained CSI-RS resource according to the first indication, including: the terminal determines at least two CBSRs according to the first indication, and one CBSR corresponds to one constrained CSI-RS resource. Optionally, the CBSR is used to determine the beam constraint for CSI reporting of the corresponding CSI-RS resource, that is, beam selection and/or beam amplitude.

In some embodiments, the terminal determines at least two CBSRs according to the first indication, including: the terminal determines B ₁ and B _2,1 according to the first indication, and obtains the CBSR of the first constrained CSI-RS resource = B ₁ B _2,1 . Among them, B ₁ is used to determine the beam group selection indication of the first constrained CSI-RS resource, and B _2,1 is used to determine the amplitude constraint of each beam in the selected beam group. Optionally, the first constrained CSI-RS resource is a resource that meets the above first condition among the at least two constrained CSI-RS resources.

In some embodiments, the terminal determines at least two CBSRs according to the first indication, including: determining B _2,2 according to the first indication, and obtaining CBSR=B _2,2 of the second constrained CSI-RS resource.

In some embodiments, the terminal determines a CBSR corresponding to each constrained CSI-RS resource according to the first indication, further comprising: determining the constrained CSI-RS resource corresponding to the CBSR according to the sequence B ₀ in each CBSR.

In some embodiments, the terminal determines a CBSR corresponding to each constrained CSI-RS resource according to the first indication, further comprising: the terminal determines parameters Ng1 and Mg1 according to the first indication, wherein Mg1 represents the number of sequence dimensions of the constrained CSI-RS resource sequence, and Ng1 represents the number of resources that can be arranged in each sequence dimension. According to the preset relationship between Ng1, Mg2, and the one-to-one correspondence between the arrangement order of multiple CBSRs in the CBSR configuration linked list and the arrangement order of multiple constrained CSI-RS resources in the constrained CSI-RS resource sequence, the constrained CSI-RS resource corresponding to each CBSR is determined.

Step S2105: the network device 102 sends multiple CSI-RS resources.

Step S2106 : The terminal 101 reports CSI reports of M antenna ports to the network device 102 based on reception of multiple CSI-RS resources sent by the network device 102 .

In some embodiments, the terminal receives multiple CSI-RS resources according to the first indication to generate a CSI report from the channel measurement, and based on the reception of multiple CSI-RS resources sent by the network device 102, reports the CSI reports of M antenna ports to the network device 102.

In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, the terms "codebook", "codeword", "precoding matrix" and the like can be interchangeable. For example, a codebook can be a collection of one or more codewords/precoding matrices.

In some embodiments, terms such as "report", "uplink", "uplink", "physical uplink", etc. can be used interchangeably, and terms such as "downlink", "downlink", "physical downlink", etc. can be used interchangeably.

In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

In some embodiments, terms such as "component carrier (CC)", "cell", "frequency carrier", and "carrier frequency" can be used interchangeably.

In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like are interchangeable.

In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectionally transmit", "Send and/or receive" can be used interchangeably, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, and other meanings.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

In some embodiments, terms such as "certain", "preset", "preset", "set", "indicated", "some", "any", and "first" can be interchangeable, and "specific A", "preset A", "preset A", "set A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2101 may be implemented as an independent embodiment, step S2106 may be implemented as an independent embodiment, and steps S2101 and S2106 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, steps S2101 and S2102 may be executed simultaneously, and steps S2104 and S2105 may be executed in an exchanged order or simultaneously.

In some embodiments, steps S2102 to S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S2101 to S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations described before or after the specification corresponding to FIG. 2A .

FIG2B is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2B , the embodiment of the present disclosure relates to a communication method, and the method includes:

Step S2201, the network device 102 configures multiple CSI-RS resources.

In some embodiments, multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal. Optionally, M is a natural number greater than 32. For example, M is any value among 48, 64, 72, 96, and 128.

Step S2202: The network device 102 configures a common CBSR for at least two CSI-RS resources among a plurality of CSI-RS resources.

In some embodiments, CBSR refers to codebook subset restriction.

In some embodiments, the network device configures a codebook subset constrained CBSR for at least two CSI-RS resources among the plurality of CSI-RS resources, wherein the at least two constrained CSI-RS resources share one CBSR.

In some embodiments, the constrained CSI-RS resource representation is configured with a CSI-RS resource of a CBSR, or the constrained CSI-RS resource representation will configure a CSI-RS resource of a CBSR.

Optionally, the CBSR is used to indicate the beam constraint of the corresponding CSI-RS resource. Optionally, the beam constraint includes an amplitude constraint for each beam and the beam specified by the constraint is used to calculate the PMI.

The following describes how to configure a shared CBSR for at least two constrained CSI-RS resources in an embodiment of the present disclosure based on the codebook subset constraint configuration principle enhanced by the Rel-15/16 Type II codebook.

In some embodiments, an implementation method of a network device configuring a common CBSR for at least two CSI-RS resources includes: configuring a first bit sequence B ₁ for a first constrained CSI-RS resource, wherein B ₁ is used to determine a beam group selection indication. A second bit sequence B ₂ is configured for at least two constrained CSI-RS resources, wherein B ₂ is used to determine the amplitude constraints of each beam in a beam group corresponding to each constrained CSI-RS resource. A CBSR shared by at least two constrained CSI-RS resources includes B ₁ and B ₂ , i.e., a CBSR shared by at least two constrained CSI-RS resources = B ₁ B _2. Optionally, the first constrained CSI-RS resource is a resource among the at least two constrained CSI-RS resources that meets the first condition.

In some embodiments, the first condition may be any one of the following: the CSI-RS resource ID is the smallest, the CSI-RS resource ID is the largest, and the CSI-RS resource ID is predefined and specified. For example, the CSI-RS resource of the first constraint may be the resource with the largest ID among multiple CSI-RS resources. For example, the CSI-RS resource of the first constraint may be the resource with the smallest ID among multiple CSI-RS resources. For example, the CSI-RS resource of the first constraint may be a CSI-RS resource predefined and specified from multiple CSI-RS resources.

In some embodiments, _B1 includes bits. Optionally, O ₁ represents an oversampling factor of the horizontal dimension. Optionally, O ₂ represents an oversampling factor of the vertical dimension. Optionally, P represents the number of beam groups selected from O ₁ O ₂ beam groups. Optionally, O ₁ O ₂ represents O ₁ ×O ₂ .

In some embodiments, when the number of antenna ports in the vertical dimension of each CSI-RS resource is the same, B ₂ may include xP(N _1,1 +N _1,2 +…+N _1,I )N _2,j bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, where j=1, 2, 3…I. Optionally, x represents the number of bits used to constrain the amplitude of a beam. For example, x is 1 or 2.

In some embodiments, the bit sequence/string _B2 may be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3 ... (P-1), P represents the number of selected beam groups. The value of P may be specified by the protocol or configured by the network device.

In some embodiments, when a network device uniformly configures multiple CSI-RS resources according to a preset number of antenna ports in the vertical dimension N ₂ , since the number of antenna ports in the vertical dimension of each CSI-RS resource is N ₂ , B ₂ may include xP(N _1,1 +N _1,2 +…+N _1,I )N ₂ bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N ₂ represents the number of antenna ports in the preconfigured vertical dimension. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 may be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3…(P-1), and P represents the number of selected beam groups.

In some embodiments, when the number of antenna ports in the horizontal dimension of each CSI-RS resource is the same, B ₂ includes xPN _1,j (N _2,1 +N _2,2 +…+N _2,I ) bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 may be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, when a network device uniformly configures multiple CSI-RS resources according to a preset number of antenna ports in the horizontal dimension N ₁ , since the number of antenna ports in the horizontal dimension of each CSI-RS resource is N ₁ , B ₂ includes xPN ₁ (N _2,1 +N _2,2 +…+N _2,I ) bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N ₁ represents the number of antenna ports in the pre-allocated horizontal dimension. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 may be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, when the network device allocates the number of antenna ports Ng1 in the horizontal dimension and the number of antenna ports Mg1 in the vertical dimension, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 ) bits, where x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 may be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

The following describes how to configure a shared CBSR for at least two constrained CSI-RS resources in an embodiment of the present disclosure based on the codebook subset constraint configuration principle enhanced by the Rel-15 Type I codebook.

In some embodiments, when the number of antenna ports in the vertical dimension of each CSI-RS resource is the same, the network device configures a CBSR implementation method, including: configuring a common CBSR for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,I )N _2,j O ₁ O ₂ . Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I. Optionally, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension.

In some embodiments, when a network device uniformly configures multiple CSI-RS resources according to a preset number of antenna ports in the vertical dimension N ₂ , since the number of antenna ports in the vertical dimension of each CSI-RS resource is N ₂ , the implementation method of the network device configuring a CBSR includes: configuring a common CBSR for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,I )N ₂ O ₁ O _2. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N ₂ represents the number of pre-allocated antenna ports in the vertical dimension. Optionally, O ₁ represents the oversampling factor of the horizontal dimension. Optionally, O ₂ represents the oversampling factor of the vertical dimension.

In some embodiments, when the number of antenna ports in the horizontal dimension of each CSI-RS resource is the same, the network device An implementation of configuring a CBSR includes: configuring a common CBSR for at least two constrained CSI-RS resources, wherein the sequence length of the common CBSR is N _1,j (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ . Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource. Optionally, j=1,2,3…I. Optionally, O ₁ represents an oversampling factor in the horizontal dimension. Optionally, O ₂ represents an oversampling factor in the vertical dimension.

In some embodiments, when a network device uniformly configures multiple CSI-RS resources according to a preset number of antenna ports in the horizontal dimension N ₁ , since the number of antenna ports in the horizontal dimension of each CSI-RS resource is N ₁ , the implementation method of the network device configuring a CBSR includes: configuring a common CBSR for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is N ₁ (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ . Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N ₁ represents the number of pre-allocated antenna ports in the horizontal dimension. Optionally, O ₁ represents the oversampling factor of the horizontal dimension. Optionally, O ₂ represents the oversampling factor of the vertical dimension.

In some embodiments, when the network device allocates the number of antenna ports Ng1 in the horizontal dimension and the number of antenna ports Mg1 in the vertical dimension, the network device configures an implementation of a CBSR, including: configuring a common CBSR for at least two constrained CSI-RS resources, the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 )O ₁ O ₂ , wherein O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension.

In some embodiments, when the total number of ports M is greater than 32, such as _PCSI-RS = 48, 64, 72, 96, or 128, corresponding possible combinations of (N ₁ , N ₂ ) and (O ₁ , O ₂ ) are as shown in Table 1 above.

Step S2203 , the network device 102 sends a first instruction to the terminal 101 .

In some embodiments, terminal 101 receives a first indication.

In some embodiments, the first indication may be RRC signaling or other higher layer signaling.

In some embodiments, the name of the first indication is not limited, and it may be, for example, a codebook subset constraint configuration indication, a channel measurement configuration indication, etc.

In some embodiments, the first indication is used to indicate at least one of the following configuration information corresponding to the multiple CSI-RS resources:

CSI-RS resources configured with CBSR;

CSI-RS resources for which CBSR is not configured;

CBSR corresponding to the constrained CSI-RS resource.

For example, the first indication is used to indicate which resources among the multiple CSI-RS resources are configured with CBSR.

For example, the first indication is used to indicate which resources among the multiple CSI-RS resources are not configured with CBSR.

Illustratively, the first indication is used to indicate a CBSR shared by at least two constrained CSI-RS resources.

In some embodiments, the first indication is used by the terminal to determine any of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR shared by at least two constrained CSI-RS resources.

It should be noted here that no constraints are imposed on the beams corresponding to CSI-RS resources that are not configured with CBSR.

Step S2204: Terminal 101 determines a CBSR shared by multiple constrained CSI-RS resources according to the first indication.

In some embodiments, the terminal determines the beam selection and/or beam amplitude for CSI reporting according to the first indication, including: determining a CBSR according to the first indication, and at least two constrained CSI-RS resources share one CBSR. Optionally, the CBSR is used to determine the beam constraint for CSI reporting of the corresponding CSI-RS resource, that is, the beam selection and/or beam amplitude.

In some embodiments, the implementation method of a terminal determining a CBSR shared by at least two constrained CSI-RS resources according to a first indication includes: determining _B1 and _B2 according to the first indication. That is, a CBSR shared by at least two constrained CSI-RS resources = _{B1 B2} . Optionally, _B1 is configured according to the first constrained CSI-RS resource, and _B1 is used to determine the beam group selection indication. Optionally, the first constrained CSI-RS resource is a resource that meets the first condition among the at least two constrained CSI-RS resources. Optionally, _B2 is configured according to the at least two constrained CSI-RS resources, _{and B2} is used to determine the amplitude constraint of each beam in the beam group corresponding to each constrained CSI-RS resource.

In some embodiments, _B1 includes bits, where _O1 represents the oversampling factor of the horizontal dimension, _O2 represents the oversampling factor of the vertical dimension, and P represents the number of beam groups selected from _{O1 to O2} beam groups.

In some embodiments, when the number of antenna ports in the vertical dimension of each CSI-RS resource is the same, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N _2,j bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 can be represented as That is, P bit sequence The concatenation of columns, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, when the network device allocates the number of antenna ports in the vertical dimension, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N ₂ bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N ₂ represents the number of pre-allocated antenna ports in the vertical dimension. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 can be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, when the number of antenna ports in the horizontal dimension of each CSI-RS resource is the same, B ₂ includes xPN _1,j (N _2,1 +N _2,2 +…+N _2,I ) bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 can be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, when the network device allocates the number of antenna ports in the horizontal dimension, B ₂ includes xPN ₁ (N _2,1 +N _2,2 +…+N _2,I ) bits. Optionally, I represents the total number of constrained CSI-RS resources. Optionally, N ₁ represents the number of antenna ports in the pre-allocated horizontal dimension. Optionally, x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 can be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, when the network device allocates the number of antenna ports Ng1 in the horizontal dimension and the number of antenna ports Mg1 in the vertical dimension, B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 ) bits, where x represents the number of bits used to constrain the amplitude of a beam.

In some embodiments, the bit sequence/string _B2 can be represented as That is, the concatenation of P bit sequences, where each bit sequence is represented by Wherein, k = 0, 1, 2, 3...(P-1), and P represents the number of selected beam groups.

In some embodiments, the implementation method of the terminal determining a CBSR shared by at least two constrained CSI-RS resources according to the first indication includes: determining a sequence of CBSRs of length (N _1,1 +N _1,2 +…+N _1,I )N _2,j O ₁ O ₂ shared by at least two constrained CSI-RS resources according to the first indication. Optionally, I represents the total number of constrained CSI-RS resources, N _2,j represents the number of antenna ports in the vertical dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension. Optionally, N _1,i represents the number of antenna ports in the horizontal dimension of the i-th constrained CSI-RS resource, i=1,2,…I.

In some embodiments, the implementation method of the terminal determining a CBSR shared by at least two constrained CSI-RS resources according to the first indication includes: determining a sequence of CBSRs of length (N _1,1 +N _1,2 +…+N _1,I )N ₂ O ₁ O ₂ shared by at least two constrained CSI-RS resources according to the first indication. Optionally, I represents the total number of constrained CSI-RS resources, N ₂ represents the number of pre-allocated antenna ports in the vertical dimension, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension. N _1,i represents the number of antenna ports in the horizontal dimension of the i-th constrained CSI-RS resource, i=1,2,…I.

In some embodiments, the implementation method of the terminal determining a CBSR shared by at least two constrained CSI-RS resources according to the first indication includes: determining a sequence of CBSRs of length N _1,j (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ shared by at least two constrained CSI-RS resources according to the first indication. Optionally, I represents the total number of constrained CSI-RS resources, N _1,j represents the number of antenna ports in the horizontal dimension corresponding to the j-th constrained CSI-RS resource, j=1,2,3…I, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension. Optionally, N _1,i represents the number of antenna ports in the vertical dimension of the i-th constrained CSI-RS resource, i=1,2,…I.

In some embodiments, the terminal determines a CBSR shared by at least two constrained CSI-RS resources according to the first indication, including: determining a CBSR shared by at least two constrained CSI-RS resources according to the first indication with a length of N ₁ (N _2,1 + N _2,2 +…+N _2,I )O ₁ O ₂ of the CBSR sequence. Optionally, I represents the total number of constrained CSI-RS resources, N ₁ represents the number of pre-allocated antenna ports in the horizontal dimension, O ₁ represents the oversampling factor in the horizontal dimension, and O ₂ represents the oversampling factor in the vertical dimension. Optionally, N _1,i represents the number of antenna ports in the vertical dimension of the i-th constrained CSI-RS resource, i=1,2,…I.

In some embodiments, the implementation method of the terminal determining a CBSR shared by at least two constrained CSI-RS resources according to the first indication includes: determining a sequence of CBSRs of length (N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 )O ₁ O ₂ shared by at least two constrained CSI-RS resources according to the first indication. Wherein, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension.

Step S2205: the network device 102 sends multiple CSI-RS resources.

Step S2206 : The terminal 101 reports CSI reports of M antenna ports to the network device 102 based on reception of multiple CSI-RS resources sent by the network device 102 .

In some embodiments, the terminal receives multiple CSI-RS resources according to the first indication to generate a CSI report from the channel measurement, and based on the reception of multiple CSI-RS resources sent by the network device 102, reports the CSI reports of M antenna ports to the network device 102.

In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, the terms "codebook", "codeword", "precoding matrix" and the like can be interchangeable. For example, a codebook can be a collection of one or more codewords/precoding matrices.

In some embodiments, terms such as "report", "uplink", "uplink", "physical uplink", etc. can be used interchangeably, and terms such as "downlink", "downlink", "physical downlink", etc. can be used interchangeably.

In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

In some embodiments, terms such as "component carrier (CC)", "cell", "frequency carrier", and "carrier frequency" can be used interchangeably.

In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like are interchangeable.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

In some embodiments, terms such as "certain", "preset", "preset", "set", "indicated", "some", "any", and "first" can be interchangeable, and "specific A", "preset A", "preset A", "set A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2206. For example, step S2201 may be implemented as an independent embodiment, step S2206 may be implemented as an independent embodiment, and steps S2101 and S2106 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, steps S2201 and S2202 may be executed simultaneously, and steps S2204 and S2205 may be executed in an exchanged order or simultaneously.

In some embodiments, steps S2202 to S2206 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S2201 to S2205 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations recorded before or after the specification corresponding to FIG. 2B .

In some embodiments, among the multiple constrained CSI-RS resources, some CSI-RS resources may correspond to independent CBSRs, some CSI-RS resources may correspond to a shared CBSR, and some CSI-RS resources may not be configured with a CBSR. Please refer to the optional implementations corresponding to FIG. 2A and FIG. 2B.

FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to a communication method, which is executed by a network device, and the method includes:

Step S3101, configure multiple CSI-RS resources.

The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2A, step S2201 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.

Step S3102: configure at least two CBSRs for at least two CSI-RS resources among the multiple CSI-RS resources, and one CBSR corresponds to one constrained CSI-RS resource.

The optional implementation of step S3102 can refer to the optional implementation of step S2102 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.

Step S3103, sending a first instruction.

The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2A, step S2203 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.

In some embodiments, the network device 102 sends the first indication to the terminal 101, but is not limited thereto, and the first indication may also be sent to other entities.

Optionally, the first indication is used by the terminal to determine any one of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and steps S3101 and S3102 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S3101 and step S3102 may be performed simultaneously.

In some embodiments, step S3102 and step S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3101 and step S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to a communication method, which is executed by a network device, and the method includes:

Step S3201, configure multiple CSI-RS resources.

The optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2A, step S2201 in Figure 2B, step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, and 3A, which will not be repeated here.

Step S3202: configure a common CBSR for at least two CSI-RS resources among a plurality of CSI-RS resources.

The optional implementation of step S3202 can refer to the optional implementation of step S2202 in FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.

Step S3203, sending a first instruction.

The optional implementation of step S3203 can refer to the optional implementation of step S2103 in Figure 2A, step S2203 in Figure 2B, step S3103 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, and 3A, which will not be repeated here.

In some embodiments, the network device 102 sends the first indication to the terminal 101, but is not limited thereto, and the first indication may also be sent to other entities.

Optionally, the first indication is used by the terminal to determine any one of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3203. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, and steps S3201 and S3202 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S3201 and step S3202 may be performed simultaneously.

In some embodiments, step S3202 and step S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3201 and step S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the embodiment of the present disclosure, step S3202 may be combined with step S3102 of FIG. 3A .

FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3C , the present disclosure embodiment relates to a communication method, which is executed by a network device, and the method includes:

Step S3301: configure multiple CSI-RS resources, where the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal, where M is greater than 32.

The optional implementation of step S3301 can refer to the optional implementation of step S2101 in Figure 2A, step S2201 in Figure 2B, step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, and 3A, which will not be repeated here.

Step S3302: configure a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, where the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resources.

The optional implementation method of step S3302 can refer to the optional implementation method of step S2102 in Figure 2A, step S2202 in Figure 2B, step S3102 in Figure 3A, step S3202 in Figure 3B, and other related parts in the embodiments involved in Figures 2A, 2B, 3A, and 3B, which will not be repeated here.

Step S3303, sending a first instruction.

The optional implementation of step S3303 can refer to the optional implementation of step S2103 in Figure 2A, step S2203 in Figure 2B, step S3103 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, and 3A, which will not be repeated here.

In some embodiments, the network device 102 sends the first indication to the terminal 101, but is not limited thereto, and the first indication may also be sent to other entities.

Optionally, the first indication is used by the terminal to determine any one of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S3301 to S3303. For example, step S3301 may be implemented as an independent embodiment, step S3302 may be implemented as an independent embodiment, and steps S3301 and S3302 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S3301 and step S3302 may be performed simultaneously.

In some embodiments, step S3302 and step S3303 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3301 and step S3303 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the present disclosure embodiment relates to a communication method, which is executed by a terminal, and the method includes:

Step S4101, obtaining a first indication.

The optional implementation of step S4101 can refer to the optional implementation of step S2103 in Figure 2A, step S2203 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.

In some embodiments, the terminal 101 receives the first indication sent by the network device 102, but is not limited thereto, and may also receive the first indication sent by other entities.

In some embodiments, terminal 101 obtains a first indication specified by a protocol.

In some embodiments, terminal 101 obtains the first indication from an upper layer(s).

In some embodiments, terminal 101 performs processing to obtain the first indication.

In some embodiments, step S4101 is omitted, and the terminal 101 autonomously implements the function indicated by the first indication, or the above function is default or acquiescent.

Optionally, the first indication is used to indicate at least one of the following configuration information:

CSI-RS resources configured with CBSR;

CSI-RS resources for which CBSR is not configured;

CBSR corresponding to the constrained CSI-RS resource.

Step S4102: Determine a CBSR corresponding to each constrained CSI-RS resource according to the first indication.

The optional implementation of step S4102 can refer to the optional implementation of step S2104 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.

Step S4103: Based on the reception of multiple CSI-RS resources, CSI reports of M antenna ports are reported.

The optional implementation of step S4103 can refer to the optional implementation of step S2106 in Figure 2A, step S2206 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.

The communication method involved in the embodiment of the present disclosure may include at least one of step S4101 to step S4103. For example, step S4103 may be implemented as an independent embodiment, and step S4101 and step S4103 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S4101 and step S4102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the present disclosure embodiment relates to a communication method, which is executed by a terminal, and the method includes:

Step S4201, obtaining a first indication.

The optional implementation of step S4201 can refer to the optional implementation of step S2103 in Figure 2A, step S2203 in Figure 2B, step S4101 in Figure 4A, and other related parts in the embodiments involved in Figures 2A, 2B, and 4A, which will not be repeated here.

In some embodiments, the terminal 101 receives the first indication sent by the network device 102, but is not limited thereto, and may also receive the first indication sent by other entities.

In some embodiments, terminal 101 obtains a first indication specified by a protocol.

In some embodiments, terminal 101 obtains a first indication from an upper layer(s).

In some embodiments, terminal 101 performs processing to obtain the first indication.

In some embodiments, step S4101 is omitted, and the terminal 101 autonomously implements the function indicated by the first indication, or the above function is default or acquiescent.

Optionally, the first indication is used to indicate at least one of the following configuration information:

CSI-RS resources configured with CBSR;

CSI-RS resources for which CBSR is not configured;

CBSR corresponding to the constrained CSI-RS resource.

Step S4202: Determine a CBSR shared by multiple constrained CSI-RS resources according to the first indication.

The optional implementation of step S4202 can refer to the optional implementation of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

Step S4203: Based on the reception of multiple CSI-RS resources, CSI reports of M antenna ports are reported.

The optional implementation of step S4203 can refer to the optional implementation of step S2106 in Figure 2A, step S2206 in Figure 2B, step S4103 in Figure 4A, and other related parts in the embodiments involved in Figures 2A, 2B, and 4A, which will not be repeated here.

The communication method involved in the embodiment of the present disclosure may include at least one of step S4201 to step S4203. For example, step S4203 may be implemented as an independent embodiment, and step S4201 and step S4203 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S4201 and step S4202 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the embodiment of the present disclosure, step S4202 may be combined with step S4102 of FIG. 4A .

FIG4C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4C , the present disclosure embodiment relates to a communication method, which is executed by a terminal, and the method includes:

Step S4301, obtain a first indication sent by a network device, wherein the first indication is used to determine any of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resources.

The optional implementation of step S4301 can refer to the optional implementation of step S2103 in Figure 2A, step S2203 in Figure 2B, step S4101 in Figure 4A, and other related parts in the embodiments involved in Figures 2A, 2B, and 4A, which will not be repeated here.

Step S4302: Determine beam selection and/or beam amplitude for CSI reporting according to the first indication.

The optional implementation of step S4302 can refer to the optional implementation of step S2104 in Figure 2A, step S2204 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.

Step S4303: Based on the reception of the multiple CSI-RS resources sent by the network device, report CSI reports of M antenna ports, where M is greater than 32.

The optional implementation of step S4303 can refer to the optional implementation of step S2106 in Figure 2A, step S2206 in Figure 2B, step S4103 in Figure 4A, and other related parts in the embodiments involved in Figures 2A, 2B, and 4A, which will not be repeated here.

The communication method involved in the embodiment of the present disclosure may include at least one of step S4301 to step S4303. For example, step S4303 may be implemented as an independent embodiment, and step S4301 and step S4303 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S4301 and step S4302 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

FIG5 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the present disclosure embodiment relates to a communication method, and the method includes:

Step S501: A network device configures a plurality of channel state information reference signal CSI-RS resources, where the plurality of CSI-RS resources are used to perform channel measurement on M antenna ports of a terminal, where M is greater than 32.

The optional implementation of step S501 can refer to the optional implementation of step S2101 in Figure 2A, step S2201 in Figure 2B, step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 2B, and 3A, which will not be repeated here.

Step S502: The network device configures a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, where the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resources.

The optional implementation of step S502 can refer to the optional implementation of step S2102 in Figure 2A, step S2202 in Figure 2B, step S3102 in Figure 3A, step S3202 in Figure 3B, and other related parts in the embodiments involved in Figures 2A, 2B, 3A, and 3B, which will not be repeated here.

Step S503: The network device sends a first indication to the terminal.

The optional implementation method of step S503 can refer to the optional implementation method of step S2103 in Figure 2A, step S2203 in Figure 2B, step S3103 in Figure 3A, step S3203 in Figure 3B, and other related parts in the embodiments involved in Figures 2A, 2B, 3A, and 3B, which will not be repeated here.

Optionally, the first indication is used to indicate at least one of the following configuration information:

CSI-RS resources configured with CBSR;

CSI-RS resources for which CBSR is not configured;

CBSR corresponding to the constrained CSI-RS resource.

Step S504: The terminal determines beam selection and/or beam amplitude for CSI reporting according to the first indication.

The optional implementation of step S504 can refer to the optional implementation of step S2104 in Figure 2A, step S2204 in Figure 2B, step S4102 in Figure 4A, step S4202 in Figure 4B, and other related parts in the embodiments involved in Figures 2A, 2B, 4A, and 4B, which will not be repeated here.

Step S505: The terminal reports CSI reports of M antenna ports based on reception of the multiple CSI-RS resources sent by the network device, where M is greater than 32.

The optional implementation of step S505 can refer to the optional implementation of step S2106 in Figure 2A, step S2206 in Figure 2B, step S4103 in Figure 4A, step S4203 in Figure 4B, and other related parts in the embodiments involved in Figures 2A, 2B, 4A, and 4B, which will not be repeated here.

In some embodiments, the above method may include the method described in the above network device side and terminal side embodiments, which will not be repeated here.

In some embodiments, if the traditional codebook subset constraint configuration method is adopted, the downlink signaling indication overhead increases exponentially with the number of CSI-RS resources. However, the codebook subset constraint configuration corresponding to multiple CSI-RS resources proposed in this application shares the same beam group selection indication configuration, which can reduce the downlink signaling indication overhead.

In some embodiments, it is assumed that the network configures I>1 CSI-RS resources for channel measurement for the terminal.

In some embodiments, based on the enhanced codebook subset constraint configuration of Rel-15/16 Type II codebook, let N _1,i represent the number of horizontal dimension ports corresponding to the i-th CSI-RS resource, and N _2,i represent the number of vertical dimension ports corresponding to the i-th CSI-RS resource, i={0,1,…,I-1}.

In some embodiments, Alt1: the network independently configures a corresponding CBSR for each CSI-RS resource configured for the terminal. The association relationship between the configured multiple CBSRs and each CSI-RS resource is determined by pre-definition or network instruction.

In some embodiments, by bits indicates the selection of the beam group configured for the first CSI-RS resource, and the beam group selection of the other I-1 resources is the same as the beam group selection indication configured for the first CSI-RS resource, that is, the beam group selection indication of the I-1 resources can be omitted, thereby reducing the signaling indication overhead. Then, the i-th resource in the I resources is independently configured with 2PN _1,i N _2,i bits or PN _1,i N _2,i bits to indicate the constraint of the average value of the broadband coefficient or coefficient amplitude. That is, the CBSR sequence length corresponding to the first CSI-RS resource is configured to be B=B ₁ B ₂ , and the CBSR sequence length configured for other CSI-RS resources is B=B _2. Optionally,

In some embodiments, if the network additionally introduces a sequence B ₀ in the CBSR to indicate the mapping relationship between the configured CBSR and the CSI-RS resource, the CBSR sequence length configured corresponding to the first CSI-RS resource is B=B ₀ B ₁ B ₂ , and the CBSR sequence length configured for other CSI-RS resources is B=B ₀ B ₂ .

In some embodiments, the first CSI-RS resource may be a CSI-RS resource with the smallest or largest CSI-RS resource ID, or a predefined and designated CSI-RS resource.

In some embodiments, Alt2: configure one CBSR for one CSI-RS resource, where the CBSR sequence B = B ₁ B ₂ , and B ₁ is still bits indicates that the sequence length of B2 is defined as follows: the amplitude of each beam is constrained by X bits, then the sequence length of B2 is XPN ₁ N ₂ bits, where N ₁ and N ₂ are determined by I CSI-RS resources configured on the network side, or by one of the CSI-RS resources.

In some embodiments, Alt3: CBSR is not configured for some CSI-RS resources among I CSI-RS resources, that is, no constraints are imposed on the beams corresponding to the resources without CBSR configuration.

In some embodiments, the value of P may be predefined or determined by network configuration.

In some embodiments, a codebook subset constraint configuration is performed based on Rel-15 Type I codebook enhancement.

In some embodiments, Option 1: a codebook subset constraint configuration is independently configured for each CSI-RS resource, and the network side indicates the beam corresponding to each constrained CSI-RS resource by a bitmap of size N ₁ N ₂ O ₁ O ₂ bits through high-layer signaling.

In some embodiments, Option 2: only one CBSR is configured, and the CBSR sequence is N ₁ N ₂ O ₁ O ₂ bits, where N ₁ and N ₂ are determined by I CSI-RS resources configured by the network side, or by one of the CSI-RS resources.

In some embodiments, Option 3: only configure the CBSR corresponding to some CSI-RS resources, that is, do not impose any constraints on the beams corresponding to the resources without CBSR configured.

In some embodiments, Embodiment 1 (codebook subset constraint configuration based on Rel-15/16 Type II codebook enhancement):

In some embodiments, it is assumed that the gNB configures I=2 CSI-RS resources for the UE, the number of ports of each resource is 32, and the IDs of the two resources are defined as ID1 and ID2, respectively. The number of ports of the horizontal dimension and vertical dimension _N2 of each resource are N1 _,i =8 and N2 _,i =2, i∈{1,2}, respectively. The value of P is predefined to be 4, that is, the UE only selects the SD basis from the constrained 4 beam groups. It is also assumed that the constraint of the amplitude corresponding to each SD basis or the constraint of the average value of each amplitude is indicated by 2 bits, and the horizontal dimension SD basis oversampling factor _O1 and the vertical dimension SD basis oversampling factor _O2 are both 4, that is, _O1 = _O2 =4.

In some embodiments, (Alt1) CBSR is configured for each CSI-RS resource. The corresponding CBSR sequence is configured in ascending order according to the CSI-RS resource ID. For the i=1 resource CSI-RS ID1, the CBSR sequence B=B ₁ B ₂ , where And expressed as For MSB, is LSB. and For the i=2nd resource CSI-RS ID2, CBSR sequence B=B ₂ , where and

In some embodiments, (Alt2) only one CBSR is configured for the two CSI-RS resources. CBSR sequence B = B ₁ B ₂ , the sequence configuration of B ₁ is the same as described in Alt1 above. or That is, the number of ports in the horizontal dimension is the sum of the number of ports in the horizontal dimension of the two resources, and the number of ports in the vertical dimension remains unchanged. Alternatively, the number of ports in the horizontal dimension remains unchanged, and the number of ports in the vertical dimension is the sum of the number of ports in the vertical dimension of the two resources.

In some embodiments, Embodiment 2 (codebook subset constraint configuration based on Rel-15 Type I codebook enhancement):

In some embodiments, it is assumed that the gNB configures I=2 CSI-RS resources for the UE, the number of ports of each resource is 32, the IDs of the two resources are defined as ID1 and ID2, and the number of ports of the horizontal dimension and vertical dimension _N2 of each resource are _N1,i =8 and N2 _,i =2,i∈{1,2} respectively. The SD basis oversampling factor _O1 of the horizontal dimension and the SD basis oversampling factor _O2 of the vertical dimension of each resource are both 4, that is, _O1 = _O2 =4.

In some embodiments, (Option 1) CBSR is independently configured for each CSI-RS resource, and the CBSR sequence is For CSI-RS ID1, the length of the sequence A _c =N _1,1 N _2,1 O ₁ O ₂ =256 bits; and for CSI-RS ID2, the length of the sequence A _c =N _1,2 N _2,2 O ₁ O ₂ =256 bits.

In some embodiments, (Option 2) only one CBSR is configured for two CSI-RS resources, and the CBSR sequence is The length of the sequence A _c =(N _1,1 +N _1,2 )N _2,1 O ₁ O ₂ =512 bits, or A _c =(N _2,1 +N _2,2 )N _1,1 O ₁ O ₂ =512 bits.

In the embodiments of the present disclosure, part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.

The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits. The hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

FIG6 is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in FIG6, the network device 600 may include: at least one of a transceiver module 601 and a processing module 602. In some embodiments, the processing module 602 is used to configure multiple channel state information reference signal CSI-RS resources, and the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal, where M is greater than 32; configure a codebook subset constraint CBSR for at least two of the multiple CSI-RS resources, and the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resource; the transceiver module 601 is used to send a first indication to the terminal, and the first indication is used to indicate at least one of the following configuration information: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to the constrained CSI-RS resource. Optionally, the above-mentioned transceiver module is used to execute The processing module is used to execute at least one of the communication steps such as sending and/or receiving performed by the network device 102 in any of the above methods (for example, step S2103, step S2105, step S2106, step S2203, step S2205, step S2206, but not limited to this), which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S2101, step S21022, step S2104, step S2201, step S2202, step S2204, but not limited to this) performed by the network device 102 in any of the above methods, which will not be repeated here.

FIG7 is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in FIG7, the terminal 700 may include: at least one of a transceiver module 701, a processing module 702, etc. In some embodiments, the transceiver module 701 is used to obtain a first indication sent by a network device, and the first indication is used to determine any of the following configuration information corresponding to multiple CSI-RS resources: CSI-RS resources configured with CBSR; CSI-RS resources not configured with CBSR; CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate the beam constraint corresponding to the constrained CSI-RS resource; the processing module 702 is used to determine the beam selection and/or beam amplitude for CSI reporting according to the first indication; the transceiver module 701 is also used to report the CSI report of M antenna ports based on the reception of the multiple CSI-RS resources sent by the network device, wherein M is greater than 32. Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and/or receiving executed by the terminal 101 in any of the above methods (for example, step S2103, step S2105, step S2106, step S2203, step S2205, step S2206, but not limited to this), which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S2101, step S21022, step S2104, step S2201, step S2202, step S2204, but not limited to this) executed by the terminal 101 in any of the above methods, which will not be repeated here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

FIG8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. The communication device 8100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

As shown in FIG8A , the communication device 8100 includes one or more processors 8101. The processor 8101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute the program, and process the data of the program. Optionally, the communication device 8100 is used to execute any of the above methods. Optionally, one or more processors 8101 are used to call instructions so that the communication device 8100 executes any of the above methods.

In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2103, step S2105, step S2106, step S2203, step S2205, step S2206, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, step S2101, step S21022, step S2104, step S2201, step S2202, step S2204, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated. Optionally, terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. can be replaced with each other, terms such as transmitter, transmitting unit, transmitter, transmitting circuit can be replaced with each other, and terms such as receiver, receiving unit, receiver, receiving circuit can be replaced with each other.

In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Optionally, all or part of the memories 8103 may also be outside the communication device 8100. In an optional embodiment, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive data from the memory 8102 or other devices, and may be used to send data to the memory 8102 or other devices. For example, the interface circuit 8104 may read the data stored in the memory 8102 and send the data to the processor 8101.

The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a (3) ASIC, such as a modem; (4) modules that can be embedded in other devices; (5) receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.; (6) others, etc.

8B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. In the case where the communication device 8100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be interchangeable. In some embodiments, the chip 8200 further includes one or more memories 8203 for storing data. Optionally, all or part of the memory 8203 can be outside the chip 8200. Optionally, the interface circuit 8202 is connected to the memory 8203, and the interface circuit 8202 can be used to receive data from the memory 8203 or other devices, and the interface circuit 8202 can be used to send data to the memory 8203 or other devices. For example, the interface circuit 8202 can read the data stored in the memory 8203 and send the data to the processor 8201.

In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2103, step S2105, step S2106, step S2203, step S2205, step S2206, but not limited thereto). The interface circuit 8202 performs the communication steps such as sending and/or receiving in the above method, for example, means that the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203 or the transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (for example, step S2101, step S21022, step S2104, step S2201, step S2202, step S2204, but not limited thereto).

The modules and/or devices described in the embodiments such as virtual devices, physical devices, chips, etc. can be combined or separated as needed. Optionally, some or all steps can also be performed by multiple modules and/or devices in collaboration, which is not limited here.

The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above methods. Optionally, the program product is a computer program product.

The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims (42)

A communication method, characterized in that it is performed by a network device, and the method comprises: Configure multiple channel state information reference signal CSI-RS resources, where the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal, where M is greater than 32; Configure a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, where the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resources; Sending a first indication to the terminal, where the first indication is used to indicate at least one of the following configuration information: CSI-RS resources configured with CBSR; CSI-RS resources for which CBSR is not configured; CBSR corresponding to the constrained CSI-RS resource. The method according to claim 1, characterized in that the configuring of codebook subset constraints CBSR for at least two CSI-RS resources among the multiple CSI-RS resources comprises: At least two CBSRs are configured, and one CBSR corresponds to one constrained CSI-RS resource. The method according to claim 1, characterized in that the configuring of codebook subset constraints CBSR for at least two CSI-RS resources among the multiple CSI-RS resources comprises: Configure a CBSR. At least two constrained CSI-RS resources share one CBSR. The method according to claim 2, characterized in that the configuring at least two CBSRs comprises: A first bit sequence _B1 and a second bit sequence _B2,1 are configured for a first constrained CSI-RS resource, wherein _B1 is used to determine a beam group selection indication, and _B2,1 is used to determine an amplitude constraint of each beam in a selected beam group, and the first constrained CSI-RS resource is a resource that meets a first condition among at least two constrained CSI-RS resources; The CBSRs of the first constrained CSI-RS resources include B ₁ and B _2,1 . The method according to claim 4, characterized in that the configuring at least two CBSRs comprises: A third bit sequence B _2,2 for determining the amplitude constraint of each beam is configured for a second constrained CSI-RS resource, where the second constrained CSI-RS resource is any resource of the at least two constrained CSI-RS resources except the first constrained CSI-RS resource; The CBSR of the second constrained CSI-RS resource includes B _2,2 , and the second constrained CSI-RS resource The beam group selection indicates multiplexing B ₁ . The method according to any one of claims 2, 4 and 5, characterized in that A CBSR includes a fourth bit sequence B ₀ , and the fourth bit sequence B ₀ is used to indicate a corresponding relationship between the CBSR and the constrained CSI-RS resources. The method according to any one of claims 2, 4 and 5, characterized in that the method further comprises: The arrangement order of multiple CBSRs in the CBSR configuration linked list is preset to correspond one-to-one with the arrangement order of multiple constrained CSI-RS resources in the constrained CSI-RS resource sequence, wherein the number of sequence dimensions of the constrained CSI-RS resource sequence is determined according to the parameter Mg1 pre-configured by the network device, and the number of resources that can be arranged in each sequence dimension is determined according to the parameter Ng1 pre-configured by the network device. The method according to claim 3, characterized in that configuring a CBSR comprises: A first bit sequence B ₁ is configured for a first constrained CSI-RS resource, where B ₁ is used to determine a beam group selection indication, and the first constrained CSI-RS resource is a resource that meets a first condition among at least two constrained CSI-RS resources; A second bit sequence B ₂ is configured for at least two constrained CSI-RS resources, where B ₂ is used to determine the amplitude constraint of each beam in the beam group corresponding to each constrained CSI-RS resource; One CBSR shared by at least two constrained CSI-RS resources includes B ₁ and B ₂ . The method according to any one of claims 4, 5 and 8, characterized in that B ₁ includes bits, where _O1 represents the oversampling factor of the horizontal dimension, _O2 represents the oversampling factor of the vertical dimension, and P represents the number of beam groups selected from _{O1 to O2} beam groups. The method according to claim 4 or 5, characterized in that B _2,1 includes xPN _1,1 N _2,1 bits, N _1,1 represents a first parameter indicated by the network device, N _2,1 represents a second parameter indicated by the network device, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, The least significant bit LSB representing the k-th bit sequence, Represents the highest bit of the k-th bit sequence MSB. The method according to claim 5, characterized in that B _2,2 includes xPN _1,2 N _2,2 bits, N _1,2 represents a first parameter indicated by the network device, N _2,2 represents a second parameter indicated by the network device, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 8, characterized in that B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N _2,j bits, where I represents the total number of constrained CSI-RS resources, N _1,i represents the first parameter indicated by the network device, i=1,2,3…I, N _2,j represents the second parameter indicated by the network device, j=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 8, characterized in that B ₂ includes xPN _1,j (N _2,1 +N _2,2 +…+N _2,I ) bits, I represents the total number of constrained CSI-RS resources, N _2,i represents the second parameter indicated by the network device, i=1,2,3…I, N _1,j represents the first parameter indicated by the network device, j=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 8, characterized in that B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 ) bits, N _1,Ng1 represents a first parameter indicated by the network device, N _2,Mg1 represents a second parameter indicated by the network device, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 2, characterized in that the configuring at least two CBSRs comprises: A CBSR is configured for each constrained CSI-RS resource, and the sequence length of the CBSR corresponding to the i-th constrained CSI-RS resource is N _1,i N _2,i O ₁ O ₂ , wherein N _1,i represents the first parameter corresponding to the i-th constrained CSI-RS resource indicated by the network device, N _2,i represents the second parameter corresponding to the i-th constrained CSI-RS resource indicated by the network device, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension. The method according to claim 3, characterized in that configuring a CBSR comprises: A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,I )N _2,j O ₁ O ₂ , wherein I represents the total number of constrained CSI-RS resources, N _1,i represents a first parameter indicated by the network device, i=1,2,3…I, N _2,j represents a second parameter indicated by the network device, j=1,2,3…I, O ₁ represents an oversampling factor in the horizontal dimension, and O ₂ represents an oversampling factor in the vertical dimension. The method according to claim 3, characterized in that configuring a CBSR comprises: A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is N _1,j (N _2,1 +N _2,2 +…+N _2,I )O ₁ O ₂ , wherein I represents the total number of constrained CSI-RS resources, N _1,j represents a first parameter indicated by the network device, j=1,2,3…I, N _2,i represents a second parameter indicated by the network device, i=1,2,3…I, O ₁ represents an oversampling factor in the horizontal dimension, and O ₂ represents an oversampling factor in the vertical dimension. The method according to claim 3, characterized in that configuring a CBSR comprises: A common CBSR is configured for at least two constrained CSI-RS resources, and the sequence length of the common CBSR is (N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 )O ₁ O ₂ , wherein N _1,Ng1 represents the network The first parameter indicated by the device, N _{2, Mg1} represents the second parameter indicated by the network device, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension. A communication method, characterized in that it is executed by a terminal, and the method comprises: Obtain a first indication sent by a network device, where the first indication is used to determine any of the following configuration information corresponding to multiple CSI-RS resources: a CSI-RS resource configured with a CBSR; a CSI-RS resource not configured with a CBSR; a CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resource; Determine beam selection and/or beam amplitude for CSI reporting according to the first indication; Based on receiving the multiple CSI-RS resources sent by the network device, CSI reports of M antenna ports are reported, where M is greater than 32. The method according to claim 19, characterized in that determining the beam selection and/or beam amplitude for CSI reporting according to the first indication comprises: At least two CBSRs are determined according to the first indication, and one CBSR corresponds to one constrained CSI-RS resource. The method according to claim 19, characterized in that determining the beam selection and/or beam amplitude for CSI reporting according to the first indication comprises: A CBSR is determined according to the first indication, and at least two constrained CSI-RS resources share one CBSR. The method according to claim 20, characterized in that The CBSR of the first constrained CSI-RS resource includes a first bit sequence _B1 and a second bit sequence _B2,1 , wherein _B1 is used to determine a beam group selection indication, and _B2,1 is used to determine an amplitude constraint of each beam in the selected beam group, and the first constrained CSI-RS resource is a resource that meets a first condition among at least two constrained CSI-RS resources; The determining at least two CBSRs according to the first indication comprises: B ₁ and B _2,1 are determined according to the first indication. The method according to claim 22, characterized in that The CBSR of the second constrained CSI-RS resource includes a third bit sequence B _2,2 for determining the amplitude constraint of each beam, and the beam group selection indication multiplexing B ₁ of the second constrained CSI-RS resource. The resource is any resource of the at least two constrained CSI-RS resources except the first constrained CSI-RS resource; The determining at least two CBSRs according to the first indication comprises: B _2,2 is determined according to the first indication. The method according to any one of claims 20, 22 and 23, characterized in that A CBSR comprises a fourth bit sequence B ₀ ; The determining, according to the first indication, beam selection and/or beam amplitude for CSI reporting further includes: Determine a constrained CSI-RS resource corresponding to the CBSR according to the fourth bit sequence _B0 . The method according to any one of claims 20, 22, and 23, characterized in that the determining the beam selection and/or beam amplitude for CSI reporting according to the first indication further comprises: Determine a parameter Ng1 and a parameter Mg1 according to the first indication, wherein Mg1 represents the number of sequence dimensions of the constrained CSI-RS resource sequence, and Ng1 represents the number of resources that can be arranged in each sequence dimension; According to the preset one-to-one correspondence between Ng1, Mg2, and the arrangement order of multiple CBSRs in the CBSR configuration list and the arrangement order of multiple constrained CSI-RS resources in the constrained CSI-RS resource sequence, the constrained CSI-RS resources corresponding to each CBSR are determined. The method according to claim 21, characterized in that A CBSR shared by at least two constrained CSI-RS resources includes a first bit sequence _B1 and a second bit sequence _B2 , _B1 is configured according to the first constrained CSI-RS resource, _B1 is used to determine a beam group selection indication, the first constrained CSI-RS resource is a resource that meets a first condition among the at least two constrained CSI-RS resources, _B2 is configured according to the at least two constrained CSI-RS resources, and _B2 is used to determine an amplitude constraint of each beam in a beam group corresponding to each constrained CSI-RS resource; The determining a CBSR according to the first indication includes: _B1 and _B2 are determined according to the first indication. The method according to any one of claims 22, 23 and 26, characterized in that B ₁ includes bits, where _O1 represents the oversampling factor of the horizontal dimension, _O2 represents the oversampling factor of the vertical dimension, and P represents the number of beam groups selected from _{O1 to O2} beam groups. The method according to claim 22 or 23, characterized in that B _2,1 includes xPN _1,1 N _2,1 bits, N _1,1 represents a first parameter indicated by the network device, N _2,1 represents a second parameter indicated by the network device, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 23, characterized in that B _2,2 includes xPN _1,2 N _2,2 bits, N _1,2 represents a first parameter indicated by the network device, N _2,2 represents a second parameter indicated by the network device, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 26, characterized in that B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,I )N _2,j bits, where I represents the total number of constrained CSI-RS resources, N _1,i represents the first parameter indicated by the network device, i=1,2,3…I, N _2,j represents the second parameter indicated by the network device, j=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 26, characterized in that B ₂ includes xPN _1,j (N _2,1 +N _2,2 +…+N _2,I ) bits, I represents the total number of constrained CSI-RS resources, N _1,j represents the first parameter indicated by the network device, j=1,2,3…I, N _2,i represents the second parameter indicated by the network device, i=1,2,3…I, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 26, characterized in that B ₂ includes xP(N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 ) bits, N _1,Ng1 represents a first parameter indicated by the network device, N _2,Mg1 represents a second parameter indicated by the network device, and x represents the number of bits used to constrain the amplitude of a beam; That is, the concatenation of P bit sequences, where each bit sequence is represented by Where k = 0, 1, 2, 3…(P-1), P represents the number of selected beam groups, represents the LSB of the k-th bit sequence, Represents the MSB of the k-th bit sequence. The method according to claim 20, characterized in that The sequence length of the CBSR corresponding to the i-th constrained CSI-RS resource is N _1,i N _2,i O ₁ O ₂ , wherein N _1,i represents the first parameter corresponding to the i-th constrained CSI-RS resource indicated by the network device, N _2,i represents the second parameter corresponding to the i-th constrained CSI-RS resource indicated by the network device, O ₁ represents the oversampling factor of the horizontal dimension, and O ₂ represents the oversampling factor of the vertical dimension. The method according to claim 21, characterized in that The sequence length of a CBSR shared by at least two constrained CSI-RS resources is (N _1,1 +N _1,2 +…+N _1,I )N _2,j O ₁ O ₂ , wherein I represents the total number of constrained CSI-RS resources, N _1,i represents a first parameter indicated by the network device, i=1,2,3…I, N _2,j represents a second parameter indicated by the network device, j=1,2,3…I, O ₁ represents an oversampling factor in the horizontal dimension, and O ₂ represents an oversampling factor in the vertical dimension. The method according to claim 21, characterized in that The sequence length of a CBSR shared by at least two constrained CSI-RS resources is N _1,j (N _2,1 +N _2,2 +…+ N _2,I )O ₁ O ₂ , wherein I represents the total number of constrained CSI-RS resources, N _1,j represents a first parameter indicated by the network device, j=1,2,3…I, N _2,i represents a second parameter indicated by the network device, i=1,2,3…I, O ₁ represents an oversampling factor in the horizontal dimension, and O ₂ represents an oversampling factor in the vertical dimension. The method according to claim 21, characterized in that The sequence length of a CBSR shared by at least two constrained CSI-RS resources is (N _1,1 +N _1,2 +…+N _1,Ng1 )(N _2,1 +N _2,2 +…+N _2,Mg1 )O ₁ O ₂ , N _1,Ng1 represents a first parameter indicated by the network device, N _2,Mg1 represents a second parameter indicated by the network device, wherein O ₁ represents an oversampling factor in the horizontal dimension, and O ₂ represents an oversampling factor in the vertical dimension. A network device, comprising: A processing module, configured to configure multiple channel state information reference signal CSI-RS resources, where the multiple CSI-RS resources are used to perform channel measurement on M antenna ports of the terminal, where M is greater than 32; and configure a codebook subset constraint CBSR for at least two CSI-RS resources among the multiple CSI-RS resources, where the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resource; The transceiver module is used to send a first indication to the terminal, where the first indication is used to indicate at least one of the following configuration information: CSI-RS resources configured with CBSR; CSI-RS resources for which CBSR is not configured; CBSR corresponding to the constrained CSI-RS resource. A terminal, characterized by comprising: A transceiver module, configured to obtain a first indication sent by a network device, wherein the first indication is used to determine any of the following configuration information corresponding to multiple CSI-RS resources: a CSI-RS resource configured with a CBSR; a CSI-RS resource not configured with a CBSR; a CBSR corresponding to at least two constrained CSI-RS resources, wherein the CBSR is used to indicate a beam constraint corresponding to the constrained CSI-RS resource; A processing module, configured to determine beam selection and/or beam amplitude for CSI reporting according to the first indication; The transceiver module is further configured to report CSI reports of M antenna ports based on reception of the multiple CSI-RS resources sent by the network device, where M is greater than 32. A network device, comprising: one or more processors; A memory coupled to the processor, wherein executable instructions are stored in the memory, and when the executable instructions are executed by the processor, the network device executes the communication method according to any one of claims 1 to 18. A terminal, characterized by comprising: one or more processors; A memory coupled to the processor, wherein the memory stores executable instructions, and when the executable instructions are executed by the processor, the terminal executes the communication method described in any one of claims 19 to 36. A communication system, characterized in that it includes a terminal and a network device, wherein the network device is configured to implement the communication method described in any one of claims 1-18, and the terminal is configured to implement the communication method described in any one of claims 19-36. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes the communication method described in any one of claims 1 to 36.