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CN-121984545-A - Method and apparatus in a node for wireless communication

CN121984545ACN 121984545 ACN121984545 ACN 121984545ACN-121984545-A

Abstract

A method and apparatus in a node for wireless communication is disclosed. The first node receives the N pieces of CSI configuration information, updates CSI reporting in a first CSI reporting subset, and sends a first information block. The N pieces of CSI configuration information are respectively used for determining N pieces of CSI report, the first CSI report subset is a subset of the N pieces of CSI report, the first information block comprises at least one piece of CSI report in the N pieces of CSI report, any one piece of first-type CSI report in the N pieces of CSI report corresponds to a first-type integer, any one piece of second-type CSI report in the N pieces of CSI report corresponds to a second-type integer, the N pieces of CSI report respectively correspond to N priorities, and the N priorities are used for determining the quantity of the CSI report included in the first CSI report subset. According to the method, different processing units are configured for the CSI reporting with different CSI computing capacity requirements, so that the waste of computing capacity is avoided.

Inventors

  • WU KEYING
  • ZHANG XIAOBO

Assignees

  • 上海朗帛通信技术有限公司

Dates

Publication Date
20260505
Application Date
20211012

Claims (16)

  1. 1. A first node device for wireless communication, comprising: The first receiver receives N pieces of CSI configuration information, wherein the N pieces of CSI configuration information are respectively used for determining N pieces of CSI reporting, the N pieces of CSI reporting do not occupy a first type of processing unit and do not occupy a second type of processing unit before a first symbol, and N is a positive integer larger than 1; The first processor updates the CSI reports in a first CSI report subset, wherein the first CSI report subset is a subset of the N CSI reports; A first transmitter, configured to transmit a first information block, where the first information block includes at least one CSI report of the N CSI reports; Any one of the N CSI reports is a first type CSI report or a second type CSI report, where the first type CSI report and the second type CSI report have different CSI computing capability requirements.
  2. 2. The first node device of claim 1, wherein any first type of CSI report in the N CSI reports corresponds to a first type integer, any second type of CSI report in the N CSI reports corresponds to a second type integer, if updated, any first type of CSI report in the N CSI reports does not occupy the second type of processing unit and the number of the occupied first type of processing unit is equal to the corresponding first type integer, any second type of CSI report in the N CSI reports if updated, the number of the occupied second type of processing unit is equal to the corresponding second type of integer, the first node determines whether to update CSI reports in the N CSI reports that do not belong to the first CSI report subset, the N CSI reports respectively correspond to N priorities, the N CSI reports are sequentially arranged in order from high to low priority, and the N priorities are used to determine the number of CSI reports in the first CSI report.
  3. 3. The first node device according to claim 1 or 2, wherein the first CSI reporting subset includes a first reporting subset and a second reporting subset, the first reporting subset includes all first CSI reports in the first M1 CSI reports in the N CSI reports, M1 is a maximum value of N1 satisfying a first condition, N1 is a positive integer not greater than N, the first condition includes that a sum of the first integers of the first type corresponding to all CSI reports in the first reference CSI reporting subset is not greater than a first reference threshold, the first reference CSI reporting subset includes all first CSI reports in the first N1 CSI reports in the N CSI reports, the second reporting subset includes all second CSI reports in the first M2 CSI reports in the N CSI reports, M2 is a maximum value of N2 satisfying a second condition set, the N2 is a positive integer not greater than N, the sum of the first integers of the first CSI reports in the first reference CSI reporting subset is not greater than a first reference threshold, the second CSI reporting subset includes all second CSI reports in the second CSI reporting subset, and the second CSI reporting subset includes all second CSI reports in the second reference CSI reporting of the second N2 CSI reporting.
  4. 4. The first node device of claim 3, wherein at least one second type of CSI report among the N CSI reports corresponds to a first type integer, wherein the first reference CSI report subset further comprises second type CSI reports among all the first N1 CSI reports among the N CSI reports corresponding to the first type integer, wherein the second condition set further comprises a third condition, wherein a sum of the first type integers among all CSI reports among the third reference CSI report subset is not greater than the first reference threshold, and wherein the third reference CSI report subset comprises all first type CSI reports among the first N2 CSI reports among the N CSI reports and all second type CSI reports among the first N2 CSI reports among the N CSI reports corresponding to the first type integer.
  5. 5. The first node device of claim 1, wherein the first subset of CSI reports consists of a first M3 of the N CSI reports, wherein M3 is a maximum value of N3 that satisfies a fourth condition and a fifth condition simultaneously, wherein N3 is a positive integer not greater than N, wherein the fourth condition comprises a sum of the first integers corresponding to all CSI reports in the fourth subset of reference CSI reports not greater than a first reference threshold, wherein the fourth subset of reference CSI reports comprises all first CSI reports in the first N3 of the N CSI reports, wherein the fifth condition comprises a sum of the second integers corresponding to all CSI reports in the fifth subset of reference CSI reports not greater than a second reference threshold, and wherein the fifth subset of reference CSI reports consists of all second CSI reports in the first N3 of the N CSI reports.
  6. 6. The first node device of claim 5, wherein at least one second-type CSI report of the N CSI reports corresponds to a first-type integer, and wherein the fourth subset of reference CSI reports further comprises second-type CSI reports of all of the first N3 CSI reports of the N CSI reports corresponding to a first-type integer.
  7. 7. The first node device of any of claims 3-6, wherein the first transmitter transmits a second block of information, wherein the second block of information indicates a first threshold and a second threshold, wherein the first reference threshold is equal to a difference between the first threshold and a first integer, wherein the first integer is a number of processing units of a first type that have been occupied in the first symbol, and wherein the second reference threshold is equal to a difference between the second threshold and a second integer, wherein the second integer is a number of processing units of a second type that have been occupied in the first symbol.
  8. 8. The first node device of any of claims 1-6, wherein the first information block comprises a first CSI report, the first CSI report being one of a second type of CSI report in the first subset of CSI reports, the first CSI report comprising a first compressed CSI, the first pre-compressed CSI being used as an input to a first function to generate the first compressed CSI.
  9. 9. A method in a first node for wireless communication, comprising: Receiving N pieces of CSI configuration information, wherein the N pieces of CSI configuration information are respectively used for determining N pieces of CSI reporting, the N pieces of CSI reporting do not occupy a first type of processing unit and do not occupy a second type of processing unit before a first symbol, and N is a positive integer larger than 1; Updating CSI reports in a first CSI report subset, wherein the first CSI report subset is a subset of the N CSI reports; Transmitting a first information block, wherein the first information block comprises at least one CSI report in the N CSI reports; Any one of the N CSI reports is a first type CSI report or a second type CSI report, where the first type CSI report and the second type CSI report have different CSI computing capability requirements.
  10. 10. The method of claim 9, wherein any one of the N CSI reports corresponds to a first type integer, any one of the N CSI reports corresponds to a second type integer, any one of the N CSI reports does not occupy the second type processing unit if updated and the number of the occupied first type processing units is equal to the corresponding first type integer, any one of the N CSI reports does not occupy the second type processing unit if updated and the number of the occupied second type processing units is equal to the corresponding second type integer, the first node determines whether to update CSI reports not belonging to the subset of the first CSI reports, the N CSI reports respectively correspond to N priorities, the N CSI reports are sequentially arranged in order of the corresponding priorities from high to low, and the N priorities are used to determine the number of CSI reports in the first node.
  11. 11. Method in a first node according to claim 9 or 10, characterized in that, The first CSI reporting subset comprises a first reporting subset and a second reporting subset, the first reporting subset comprises all first-class CSI reports in the first M1 CSI reports in the N CSI reports, M1 is the maximum value of N1 meeting a first condition, N1 is a positive integer not greater than N, the sum of the first-class integers corresponding to all the first-class CSI reports in the first reference CSI reporting subset is not greater than a first reference threshold, the first reference CSI reporting subset comprises all first-class CSI reports in the first N1 CSI reports in the N CSI reports, the second reporting subset comprises all second-class CSI reports in the first M2 CSI reports in the N CSI reports, M2 is the maximum value of N2 meeting a second condition set, N2 is a positive integer not greater than N, the second condition set comprises the second-class CSI reports corresponding to all the first-class CSI reports in the second reference subset, and the second condition set comprises all the first-class CSI reports in the second-class CSI reports not being greater than the first-class threshold.
  12. 12. The method in a first node according to claim 11, The first reference CSI reporting subset further comprises all second CSI reports corresponding to one first integer in the first N1 CSI reports in the N CSI reports, the second condition set further comprises a third condition, the sum of the first integers corresponding to all CSI reports in the third reference CSI reporting subset is not larger than the first reference threshold, and the third reference CSI reporting subset comprises all first CSI reports in the first N2 CSI reports in the N CSI reports and all second CSI reports corresponding to one first integer in the first N2 CSI reports in the N CSI reports.
  13. 13. The method in a first node according to claim 9, The first CSI reporting subset consists of the first M3 CSI reports in the N CSI reports, M3 is the maximum value of N3 which simultaneously meets a fourth condition and a fifth condition, N3 is a positive integer which is not more than N, the fourth condition comprises that the sum of the first integers corresponding to all the CSI reports in the fourth reference CSI reporting subset is not more than a first reference threshold, the fourth reference CSI reporting subset comprises all the first CSI reports in the first N3 CSI reports in the N CSI reports, the fifth condition comprises that the sum of the second integers corresponding to all the CSI reports in the fifth reference CSI reporting subset is not more than a second reference threshold, and the fifth reference CSI reporting subset consists of all the second CSI reports in the first N3 CSI reports in the N CSI reports.
  14. 14. The method in a first node according to claim 13, The fourth reference CSI report subset further comprises second-type CSI reports corresponding to one integer of the first type in all the first N3 CSI reports in the N CSI reports.
  15. 15. The method in a first node according to any of claims 11 to 14, comprising: Transmitting a second information block; The second information block indicates a first threshold and a second threshold, the first reference threshold is equal to a difference between the first threshold and a first integer, the first integer is the number of the first type of processing units already occupied in the first symbol, and the second reference threshold is equal to a difference between the second threshold and a second integer, the second integer is the number of the second type of processing units already occupied in the first symbol.
  16. 16. The method in a first node according to any of the claims 9 to 14, The first information block comprises a first CSI report, wherein the first CSI report is one second-type CSI report in the first CSI report subset, the first CSI report comprises a first compressed CSI, and the first pre-compressed CSI is used as input of a first function to generate the first compressed CSI.

Description

Method and apparatus in a node for wireless communication The application is a divisional application of the following original application: the filing date of the original application is 2021, 10 and 12 days Number 202111184690.7 of the original application The invention of the original application is entitled method and apparatus in a node for wireless communication Technical Field The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for wireless signals in a wireless communication system supporting a cellular network. Background The multi-antenna technology is a key technology in a 3GPP (3 rd Generation Partner Project, third generation partnership project) LTE (Long-term Evolution) system and an NR (New Radio) system. Additional spatial freedom is obtained by configuring multiple antennas at a communication node, such as a base station or UE (User Equipment). The multiple antennas form beams pointing to a specific direction through multiple antenna processing such as precoding and/or beam forming, so as to improve communication quality. In downlink multi-antenna transmission, the UE generally feeds back CSI (CHANNEL STATE Information) to assist the base station in performing precoding and/or beamforming. As the number of antennas increases, the overhead of CSI feedback increases. And various enhanced multi-antenna technologies, such as multi-user MIMO, have higher requirements on feedback accuracy, thereby further increasing feedback overhead. In 3GPP RAN #88e conference and 3GPP R (release) 18 workshop, extensive attention and discussion is paid to the application of ML (MACHINE LEARING, machine learning)/AI (ARTIFICIAL INTELLIGENCE ) in the physical layer of wireless communication systems. The compression of CSI using ML/AI techniques to simultaneously address the accuracy and overhead of CSI feedback is widely recognized as one of the important applications of ML/AI in the physical layer. Disclosure of Invention In NR (release) 15 and R16, CSI computing capability that the UE can perform simultaneously is introduced to determine the number of CSI reports that the UE can update simultaneously. The applicant found through research that ML/AI-based CSI calculation is very different from conventional CSI calculation, which require different computational power. Therefore, when the ML/AI-based CSI feedback technique is introduced, how to determine the number of CSI reports that can be updated simultaneously by the UE is a problem to be solved. In this case, how to avoid the waste of the computing power is also a problem to be solved. In view of the above, the present application discloses a solution. It should be noted that although the above description is based on a cellular network as an example, the present application is also applicable to other scenarios such as V2X (Vehicle-to-evaluation) and sidelink (sidelink) transmission, and achieves technical effects similar to those in the cellular network scenario. Furthermore, the adoption of unified solutions for different scenarios (including but not limited to cellular network, V2X, and sidelink transmission) also helps to reduce hardware complexity and cost. Embodiments in a first node of the application and features in embodiments may be applied to a second node and vice versa without conflict. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict. As an embodiment, the term (Terminology) in the present application is explained with reference to the definition of the 3GPP specification protocol TS36 series. As an embodiment, the term in the present application is explained with reference to the definition of the 3GPP specification protocol TS38 series. As an embodiment, the term in the present application is explained with reference to the definition of the 3GPP specification protocol TS37 series. As one example, the term in the present application is explained with reference to definition of a specification protocol of IEEE (Institute of electrical and electronics engineers) ELECTRICAL AND Electronics Engineers. The application discloses a method used in a first node of wireless communication, which is characterized by comprising the following steps: Receiving N pieces of CSI configuration information, wherein the N pieces of CSI configuration information are respectively used for determining N pieces of CSI reporting, the N pieces of CSI reporting do not occupy a first type of processing unit and do not occupy a second type of processing unit before a first symbol, and N is a positive integer larger than 1; Updating CSI reports in a first CSI report subset, wherein the first CSI report subset is a subset of the N CSI reports; Transmitting a first information block, wherein the first information block comprises at least one CSI report in the N CSI reports; The