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CN-122029748-A - Method, device and communication system for calculating channel state information

CN122029748ACN 122029748 ACN122029748 ACN 122029748ACN-122029748-A

Abstract

The embodiment of the application provides a method, a device and a communication system for calculating channel state information. The method comprises the steps of receiving at least Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises M pieces of sub-configuration information, M is an integer greater than or equal to 1, and calculating and reporting the CSI at least based on a relevant symbol on a first antenna port relevant to at least one piece of sub-configuration information in the M pieces of sub-configuration information.

Inventors

  • LU YIWEN
  • ZHU JING
  • ZHANG LEI

Assignees

  • 壹泛尼提株式会社

Dates

Publication Date
20260512
Application Date
20230926

Claims (20)

  1. An apparatus for calculating channel state information, configured in a terminal device, the apparatus comprising: A receiving unit for receiving at least Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises M sub-configuration information, M is an integer greater than or equal to 1, and And the processing unit is used for calculating and reporting the CSI at least based on the relevant symbol on the first antenna port relevant to at least one piece of sub-configuration information in the M pieces of sub-configuration information.
  2. The apparatus of claim 1, wherein, The receiving unit also receives CSI-RS resource configuration information, wherein the CSI-RS resource configuration information includes at least port number indication information (nrofports).
  3. The apparatus of claim 1, wherein the CSI information comprises at least: CQI (channel quality information) information, and/or, PMI (Precoder matric index) information.
  4. The apparatus of claim 2, wherein, The first antenna port comprises [3000+p (0) ,…,3000+p (P-1) ], wherein P is the number (number of enabled ports) of enabled ports indicated by port indication information (port-subsetIndicator) of the sub configuration information, P (j) is more than or equal to 0 and less than or equal to Q, j is more than or equal to 0 and less than or equal to P-1, and Q is equal to port number indication information (nrofports) in the CSI-RS resource configuration information.
  5. The apparatus of claim 4, wherein, The value of p (j) is the index of the j-th enabled port indicated by the port indication information (port-subsetIndicator).
  6. The apparatus of claim 4, wherein, P (j) has the value j.
  7. The apparatus of claim 1, wherein, The first antenna port comprises [3000+0,..3000+p-1 ], wherein P is the number of enabled ports (number of enabled ports) indicated by port indication information (port-subsetIndicator) of the sub-configuration information.
  8. The apparatus of claim 3, wherein the calculation of CQI information is based at least on a hypothesized Physical Downlink Shared Channel (PDSCH) signal transmitted at antenna port [1000,..1000+v-1 ], the PDSCH signal being related to a related symbol on the first antenna port, where v is a number of PDSCH transmission layers.
  9. The apparatus of claim 8, wherein the PDSCH signal is correlated with a correlation symbol on a first antenna port of an mth sub-configuration by Wherein, the A signal vector representing v layers of the PDSCH signal, Representing the relevant symbols on antenna port 3000+ p (0) ,…,3000+p (P-1) , W m (i) represents PMI information calculated based on the mth sub-configuration information, 1≤m≤M.
  10. The apparatus of claim 8, wherein the PDSCH signal is correlated with a correlation symbol on a first antenna port of an mth sub-configuration by Wherein, the A signal vector representing v layers of the PDSCH signal, Representing the relevant symbols on antenna port 3000+0, 3000+ p-1, W m (i) represents PMI information calculated based on the mth sub-configuration information, 1≤m≤M.
  11. The apparatus of claim 2, wherein, The mth sub-configuration information in the M sub-configuration information comprises 1 port indication information (port-subsetIndicator), and M is more than or equal to 1 and less than or equal to M.
  12. The apparatus of claim 11, wherein, The port indication information is a bit map with Q bits, where Q is equal to port number indication information (nrofports) in the CSI-RS resource configuration information.
  13. A method of calculating channel state information, applied to a terminal device, the method comprising: Receiving at least Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises M pieces of sub-configuration information, M is an integer greater than or equal to 1, and And calculating and reporting the CSI at least based on the relevant symbol on the first antenna port relevant to at least one piece of the M pieces of sub-configuration information.
  14. The method of claim 13, wherein the method further comprises: And receiving CSI-RS resource configuration information, wherein the CSI-RS resource configuration information at least comprises port quantity indication information (nrofports).
  15. The method of claim 13, wherein the CSI information comprises at least: CQI (channel quality information) information, and/or, PMI (Precoder matric index) information.
  16. The method of claim 14, wherein, The first antenna port comprises [3000+p (0) ,…,3000+p (P-1) ], wherein P is the number (number of enabled ports) of enabled ports indicated by port indication information (port-subsetIndicator) of the sub configuration information, P (j) is more than or equal to 0 and less than or equal to Q, j is more than or equal to 0 and less than or equal to P-1, and Q is equal to port number indication information (nrofports) in the CSI-RS resource configuration information.
  17. The method of claim 16, wherein, The value of p (j) is the index of the j-th enabled port indicated by the port indication information (port-subsetIndicator).
  18. The method of claim 16, wherein, P (j) has the value j.
  19. The method of claim 13, wherein, The first antenna port comprises [3000+0,..3000+p-1 ], wherein P is the number of enabled ports (number of enabled ports) indicated by port indication information (port-subsetIndicator) of the sub-configuration information.
  20. A communication system comprising a network device and a terminal device, the terminal device having the apparatus for calculating channel state information as claimed in claim 1.

Description

Method, device and communication system for calculating channel state information Technical Field The embodiment of the application relates to the technical field of communication. Background With the popularity of fifth generation (5G) communication networks in various industries and in more geographical areas, in order to handle more advanced services, very high data rates and denser networks are required, and more antennas, more bandwidth and more frequency bands are used, whereby the power consumption of 5G devices becomes larger and larger. According to the data statistics of operators, the energy consumption of one 5G base station is three times higher than that of an LTE (long term evolution ) base station on average, and the operators have almost five times of electricity charge expenditure in the cost of deploying the 5G network. More importantly, the energy consumption overhead of the 5G base station is large even in the time period without traffic. Therefore, network energy saving has important significance for improving the sustainability of the environment, reducing the influence on the environment (such as reducing the emission of greenhouse gases) and saving the operation cost, and 5G network energy saving is a problem to be solved urgently. In order to achieve network power savings, R18 (release 18,release 18,Rel-18) stands for a network power saving related issue to study various power saving techniques. In the discussion, the network energy saving technology may be classified into a time domain/frequency domain/space domain/energy domain energy saving type and the like. The spatial domain energy saving is, for example, dynamically adjusting the number of antennas, the energy domain energy saving is, for example, dynamically adjusting the data transmission power, the time domain energy saving is, for example, introducing cell DTX (discontinuous transmission )/DRX (discontinuous reception technique, discontinuous Reception), etc. The use of various energy saving techniques can save a lot of energy for the network device, but at the same time, can also negatively affect other processes or techniques in the communication system, and cause certain compatibility problems for the configuration methods in the existing standards. For example, in an NR (new radio) power saving scenario, the terminal side needs to report CSI Information of one or more power saving sub-configurations according to existing or enhanced CSI (channel state Information) resource configuration measurement, so as to provide sufficient reporting of channel state Information for data transmission for energy saving purposes by the base station. It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present application and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the application section. Disclosure of Invention The inventor finds that the current CSI reporting mechanism cannot support the reporting of multiple CSI information of one or more sub-configurations. How to perform joint channel measurement and reporting on one or more sub-configurations by a terminal device becomes a problem to be solved in the network energy saving technology. In view of at least one of the above problems or other similar problems, embodiments of the present application provide a method, apparatus, and communication system for calculating channel state information. According to an aspect of an embodiment of the present application, there is provided a method for calculating channel state information, applied to a terminal device, the method including: Receiving at least Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises M pieces of sub-configuration information, M is an integer greater than or equal to 1, and And calculating and reporting the CSI at least based on the relevant symbol on the first antenna port relevant to at least one piece of the M pieces of sub-configuration information. According to another aspect of an embodiment of the present application, there is provided an apparatus for calculating channel state information, configured in a terminal device, the apparatus including: A receiving unit for receiving at least Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises M sub-configuration information, M is an integer greater than or equal to 1, and And the processing unit is used for calculating and reporting the CSI at least based on the relevant symbol on the first antenna port relevant to at least one piece of sub-configuration information in the M pieces of sub-configuration inf