CN-122027091-A - Channel information feedback method, device, storage medium and program product

Abstract

The disclosure provides a channel information feedback method, a device, a storage medium and a program product, relates to the technical field of communication, and can solve the communication problem caused by deep attenuation phenomenon in the related technology. The method comprises the steps of determining X channel state information reference signal (CSI-RS) resource groups, wherein X is a positive integer greater than or equal to 1, each CSI-RS resource group in the X CSI-RS resource groups comprises one or more CSI-RS resources, and sending relevant information of the X CSI-RS resource groups to a second node. The method and the device can reduce or avoid interference collision among multiple paths of signals in the transmission process.

Inventors

• ZHANG SHUJUAN
• YU HONGKANG
• SUN YUNQI
• LU GUANGYAN
• YANG JUN
• CHEN YIJIAN

Assignees

• 中兴通讯股份有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (20)

1. 1. A channel information feedback method, applied to a first node, the method comprising: Determining X channel state information reference signal (CSI-RS) resource groups, wherein X is a positive integer greater than or equal to 1, and each CSI-RS resource group in the X CSI-RS resource groups comprises one or more CSI-RS resources; and sending the related information of the X CSI-RS resource groups to a second node.
2. 2. The method according to claim 1, wherein in case that the X is greater than 1, the X CSI-RS resource groups correspond to X first groups, respectively, the X first groups being at least one of: x time domain resource groups, wherein each of the X time domain resource groups comprises one or more time domain units; x time domain layer resource groups, wherein one time domain layer resource group comprises one or more time domain layer resources, and each time domain layer resource is a data layer group on one time domain resource; X groups of layers, wherein each group of X groups of layers includes one or more data layers; X frequency domain resource groups, wherein each of the X frequency domain resource groups comprises one or more frequency domain units; X time-frequency resource groups, wherein each resource in the X time-frequency resource groups is a time-frequency resource; X frequency domain layer resource groups, wherein one frequency domain layer resource group comprises one or more frequency domain layer resources, and each frequency domain layer resource is a data layer group on one frequency domain resource; and X time-frequency domain layer resource groups, wherein one time-frequency domain layer resource group comprises one or more time-frequency layer resources, and each time-frequency domain layer resource is a data layer group on one time-frequency domain resource.
3. 3. The method of claim 2, wherein the information about the X CSI-RS resource groups comprises a division manner of the X first groups, and/or, The division mode of the X first groups is determined according to the received signaling information.
4. 4. The method of claim 2, wherein at least one of the X time domain resource groups comprises time non-contiguous time domain resources, and/or, The X CSI-RS resource groups respectively correspond to X first groups, wherein the channel state information on each first group in the X first groups is determined according to one CSI-RS resource group in the X CSI-RS resource groups, the corresponding relation exists between the one CSI-RS resource group and the first group, and/or, The related information of the X CSI-RS resource groups comprises channel state information of each CSI-RS resource group, and the channel state information of one CSI-RS resource group is adapted to one first group of the X first groups, wherein the one CSI-RS resource group and the one first group have the corresponding relation.
5. 5. The method of claim 2, wherein each time domain unit included in one of the time domain resource groups comprises a CSI-RS signal of each CSI-RS resource in a CSI-RS resource group corresponding to the one of the time domain resource groups, or One or more time domain units included in one time domain resource group are time domain units after a predetermined time, wherein the predetermined time is determined according to a sending time when the first node sends related information of the X CSI-RS resource groups.
6. 6. The method according to claim 2, wherein when one CSI-RS resource belongs to at least two CSI-RS resource groups of the X CSI-RS resource groups, all or part of precoding information corresponding to the one CSI-RS resource is the same on at least two first groups corresponding to the at least two CSI-RS resource groups.
7. 7. The method of claim 1, wherein the step of determining the position of the substrate comprises, The channel state of at least one of the X CSI-RS resource groups satisfies a first predetermined characteristic, and/or, The X CSI-RS resource groups are determined according to the first preset characteristics which are required to be met by the channel state of each CSI-RS resource group.
8. 8. The method of claim 7, wherein each of the at least one CSI-RS resource groups comprises at least two CSI-RS resources therein, and wherein the first predetermined characteristic satisfied by the channel state of each of the at least one CSI-RS resource groups comprises at least one of: CSI-RS resources in the CSI-RS resource group can be received simultaneously by the first node; channel measurement values of the CSI-RS resources in the CSI-RS resource group meet a second preset characteristic; the CSI-RS resources in the CSI-RS resource group correspond to the same data layer or, And the CSI-RS resources in the CSI-RS resource group correspond to different data layers.
9. 9. The method of claim 8, wherein the channel measurements comprise at least one of: The time delay spread measurement value, the angle spread measurement value, the Doppler spread measurement value, the frequency domain change measurement value of the grouping channel corresponding to the CSI-RS resource group, the time domain change measurement value of the grouping channel corresponding to the CSI-RS resource group, the frequency domain change measurement value of the channel quality of the grouping channel and the time domain change measurement value of the channel quality of the grouping channel.
10. 10. The method of claim 9, wherein when the channel measurements include the delay spread measurement, the angle spread measurement, and at least one of the doppler spread measurements, the channel measurements for the CSI-RS resources in the CSI-RS resource group satisfy a second predetermined characteristic, comprising: The channel measurement values of any two CSI-RS resources in the CSI-RS resource group are smaller than a predetermined value, and/or the distribution of the channel measurement values of all CSI-RS resources in the CSI-RS resource group satisfies the second predetermined characteristic.
11. 11. The method of claim 9, wherein the grouping channel is a channel having ports of different ones of the set of CSI-RS resources as different measurement ports, and/or, The grouping channel is the sum of channels obtained according to ports of different CSI-RS resources in the CSI-RS resource group.
12. 12. The method according to any of claims 1-11, wherein the information related to the X CSI-RS resource groups comprises information of each of the X CSI-RS resource groups, wherein the information of each CSI-RS resource group comprises at least one of: index information of the CSI-RS resources included in each CSI-RS resource group; channel quality information of each CSI-RS resource included in each CSI-RS resource group; channel quality information of a grouping channel corresponding to each CSI-RS resource group; channel measurement values of each CSI-RS resource group; the precoding information corresponding to each CSI-RS resource group, or, And the rank information corresponding to each CSI-RS resource group.
13. 13. The method of claim 12, wherein the channel quality information comprises at least one of reference signal received power, RSRP, signal-to-interference-plus-noise ratio, SINR, and channel quality indicator, CQI.
14. 14. The method according to any one of claims 1-13, wherein the related information of the X CSI-RS resource groups includes precoding information corresponding to each of the X CSI-RS resource groups; The precoding vector corresponding to each layer in the precoding information corresponding to one CSI-RS resource group comprises z-P sub-vectors, the number of elements included in the precoding vector is equal to the sum of the number of elements included in the z-P sub-vectors, P is the number of CSI-RS resources included in the one CSI-RS resource group, z is a positive integer smaller than or equal to 3, for P CSI-RS resources in the one CSI-RS resource group, each CSI-RS resource corresponds to z-sub-vectors in the z-P sub-vectors respectively, and the number P of CSI-RS resources included in different CSI-RS resource groups in the X CSI-RS resource groups is the same or different.
15. 15. The method of claim 14, wherein the z subvectors are determined by one or more parameters including at least one of one or more first time domain base vectors, one or more first frequency domain base vectors; Wherein each element in one of the first time domain base vectors corresponds to one first time domain unit and each element in one of the first frequency domain base vectors corresponds to one first frequency domain unit.
16. 16. The method of claim 15, wherein the one or more parameters further comprise at least one of a second time domain base vector, a second frequency domain base vector; the second time domain base vector is used for representing the deviation of channel states of different CSI-RS resources in the time domain; the second frequency domain base vector is used for representing the deviation of the channel states of different CSI-RS resources on the frequency domain.
17. 17. The method of claim 14, wherein the precoding vector for each layer satisfies at least one of the following forms: Wherein, the Representing a precoding vector with a dimension of N ant x P, z=1, N ant represents the number of antenna ports included in one CSI-RS resource, d i represents a weight coefficient corresponding to the ith CSI-RS resource, Representing a first time domain base vector corresponding to the ith CSI-RS resource, b i ∈[0,1],V i representing a space domain vector corresponding to the ith CSI-RS resource, and V i comprising N=N ant /z elements; Wherein, the Representing a precoding vector with a dimension of N ant ×p, d i1 representing a weight coefficient in a first polarization direction of an ith CSI-RS resource, d i2 representing a weight coefficient in a second polarization direction of the ith CSI-RS resource, V i including the number of elements n=n ant /z, z=2; Wherein, the A precoding vector with dimension N ant x P, li denotes the number of airspace vectors corresponding to the ith CSI-RS resource, d i1,j denotes the weight coefficient of the jth airspace vector in the first polarization direction corresponding to the ith CSI-RS resource, d i2,j denotes the weight coefficient of the jth airspace vector in the second polarization direction corresponding to the ith CSI-RS resource, A first time domain base vector representing a jth space vector corresponding to an ith CSI-RS resource, V i,j representing the jth space vector corresponding to the ith CSI-RS resource, V i,j including n=n ant /z, z=2; Wherein, the Representing a precoding vector with dimension N ant x P, c i1 representing a weight coefficient in a first polarization direction corresponding to an ith CSI-RS resource, c i2 representing a weight coefficient in a second polarization direction corresponding to the ith CSI-RS resource, Representing a first frequency domain base vector corresponding to an ith CSI-RS resource, k representing indexes of first frequency domain units corresponding to the first frequency domain base vector, N 3,i representing indexes of the first frequency domain base vector corresponding to the ith CSI-RS resource, and N 3 representing the total number of the first frequency domain units corresponding to the first frequency domain base vector; Wherein, the The precoding vector with the dimension of N ant x P is represented, li represents the number of airspace vectors corresponding to the ith CSI-RS resource, V i,j represents the jth airspace vector corresponding to the ith CSI-RS resource, J m (k) represents the mth first frequency domain base vector corresponding to the plurality of CSI-RS resources, k represents the index of a first frequency domain unit corresponding to the first frequency domain base vector, c iq,j,m,r represents the weight coefficient of the ith CSI-RS resource, the mth first frequency domain base vector and the jth airspace vector in the q polarization direction corresponding to the mth first time domain base vector, and w r (t) represents the mth first time domain base vector corresponding to the plurality of CSI-RS resources; Wherein, the The method comprises the steps that a precoding vector with a dimension of N ant x P is represented, F i (k) represents a second frequency domain base vector corresponding to an ith CSI-RS resource, li represents the number of space base vectors corresponding to the ith CSI-RS resource, V i,j represents preset precoding of a J-th space base vector corresponding to the ith CSI-RS resource, J m (k) represents an m-th first frequency domain base vector corresponding to a plurality of CSI-RS resources, k represents an index of a first frequency domain unit corresponding to the first frequency domain base vector, c i1,j,m,r represents a weight coefficient of the ith CSI-RS resource, the m-th first frequency domain base vector and the J-th space base vector in a first polarization direction corresponding to the r-th first time domain base vector, and w r (t) represents the r-th first time domain base vector corresponding to the plurality of CSI-RS resources; Wherein, the A precoding vector with dimension N ant x P is represented, E i (t) represents a second frequency domain base vector corresponding to an ith CSI-RS resource, F i (k) represents a second frequency domain base vector corresponding to an ith CSI-RS resource, li represents a number of spatial base vectors corresponding to an ith CSI-RS resource, V i,j represents a preset precoding of a jth spatial base vector corresponding to an ith CSI-RS resource, J m (k) represents an mth first frequency domain base vector corresponding to a plurality of CSI-RS resources, k represents an index of a first frequency domain unit corresponding to the first frequency domain base vector, c i1,j,m,r represents a weight coefficient of the ith CSI-RS resource, the mth first frequency domain base vector, the jth spatial base vector in a first polarization direction corresponding to an mth first time domain base vector, w r (t) represents an mth first time domain base vector corresponding to a plurality of CSI-RS resources, or, Wherein the jth space vector The method comprises the steps that z is shown as Pj subvectors d iq *V j,1 ,z＝2,d iq,j , the weight corresponding to the 2 (i-1) +q subvectors of the jth airspace vector in the q polarization direction is shown as V j,i , the airspace subvectors corresponding to the 2 (i-1) +1 and 2 (i-1) +2 subvectors of the jth airspace vector are shown as V j,i , N ant,j /z elements are shown as V j,i , and Pj is determined according to an airspace vector index j.
18. 18. The method of claim 17, wherein when the precoding information corresponding to one CSI-RS resource group includes precoding vectors of a plurality of layers, precoding forms of the precoding vectors corresponding to different layers are the same, and values of at least one parameter in the precoding vectors corresponding to different layers are different.
19. 19. The method of claim 1, wherein at least one CSI-RS resource group exists in the X CSI-RS resource groups, each CSI-RS resource group of the at least one CSI-RS resource group includes only one CSI-RS resource, and the relevant information of the X CSI-RS resource groups includes at least one of: A plurality of channel state information of the one CSI-RS resource in each of the at least one CSI-RS resource group, the plurality of channel state information corresponding to a plurality of first groups; The method comprises the steps of changing information of channel quality information of the one CSI-RS resource in each of the at least one CSI-RS resource groups on a plurality of first groups; The first groups comprise at least one of a plurality of time domain resource groups, a plurality of frequency domain resource groups and a plurality of time frequency resource groups, the channel state information comprises at least one of precoding information and channel quality information, and the channel quality information comprises at least one of RSRP, SINR and Reference Signal Receiving Quality (RSRQ).
20. 20. The method of claim 19, wherein one CSI-RS resource included in each of the at least one CSI-RS resource group corresponds to multi-registration co-located reference signal configuration information.

Description

Channel information feedback method, device, storage medium and program product Technical Field The present disclosure relates to the field of communications technologies, and in particular, to a channel information feedback method, apparatus, storage medium, and program product. Background In wireless communication, the channel environment between the receiving end and the transmitting end is complex and changeable, for example, the signal propagation path is changed due to the influence of communication conditions such as signal propagation direction, topography, weather and the like, and channel multipath effect is generated. When signals reach a receiving end through different paths, interference phenomenon can be generated among the signals of the paths, at the moment, the tiny movement of the terminal position can possibly cause larger change of channel characteristics, so that the signal quality is suddenly and greatly reduced, namely, the phenomenon of deep space attenuation occurs, the receiving performance of the signals can be seriously influenced, and the communication experience of a user is poor. Disclosure of Invention The embodiment of the disclosure provides a channel information feedback method, a device, a storage medium and a program product, which can solve the communication problem caused by deep attenuation phenomenon in the related technology. In one aspect, a channel information feedback method is provided, which includes determining X channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS) resource groups, wherein X is a positive integer greater than or equal to 1, each of the X CSI-RS resource groups includes one or more CSI-RS resources, and transmitting related information of the X CSI-RS resource groups to a second node. In yet another aspect, a method for channel information feedback is provided, including receiving information related to X CSI-RS resource groups from a first node, wherein X is a positive integer greater than or equal to 1, each of the X CSI-RS resource groups including one or more CSI-RS resources. In yet another aspect, a first node is provided, comprising a processing unit and a communication unit; the processing unit is used for determining X CSI-RS resource groups, wherein X is a positive integer greater than or equal to 1, and each CSI-RS resource group in the X CSI-RS resource groups comprises one or more CSI-RS resources; the communication unit is used for sending the related information of the X CSI-RS resource groups to the second node. In yet another aspect, a first node is provided, comprising a communication unit; The communication unit is used for receiving related information of X CSI-RS resource groups from the first node, wherein X is a positive integer greater than or equal to 1, and each CSI-RS resource group in the X CSI-RS resource groups comprises one or more CSI-RS resources. In yet another aspect, a communication device is provided, including a memory and a processor, the memory and the processor being coupled, the memory being configured to store a computer program, the processor implementing the method of any of the embodiments described above when executing the computer program. In yet another aspect, a computer readable storage medium is provided, on which computer program instructions are stored which, when executed by a processor, implement a method as described in any of the embodiments above. In a further aspect, a computer program product is provided, comprising computer program instructions which, when executed by a processor, implement the method according to any of the embodiments described above. According to the embodiment of the disclosure, a first node can determine X CSI-RS resource groups and send relevant information of the X CSI-RS resource groups to a second node. Wherein X is a positive integer greater than or equal to 1, and each CSI-RS resource group of the X CSI-RS resource groups includes one or more CSI-RS resources. In an actual wireless communication scenario, a channel environment between a transmitting end and a receiving end is usually complex, especially in a scenario with abundant multipath, for example, when a plurality of nodes serve a terminal, the position of the terminal slightly moves, so that signals of the plurality of nodes cannot be superimposed forward, and a deep space attenuation phenomenon is caused. According to the method and the device, the first node can select or determine the CSI-RS resource group, and further feedback the related information of the determined CSI-RS resource group to the second node, so that the second node can perform airspace resource management based on the related information fed back by the first node, the problem that multipath signals cannot be always forward superimposed in the transmission process is reduced or avoided, the receiving performance of the signals is ensured, and the communication experience of a user is