CN-119731954-B - Method for reporting channel state information and apparatus therefor

Abstract

A wireless communication method for use in a wireless terminal is disclosed. The method includes receiving higher layer signaling including Channel State Information (CSI) reporting configuration information from a wireless network node, receiving first signaling including a CSI reporting trigger state indication or pattern indication from the wireless network node, and reporting CSI according to the higher layer signaling and the first signaling.

Inventors

• MA XIAOYING
• DAI BO
• XU JUN
• CHEN MENGZHU
• TANG HONG
• GUO QIUJIN
• GUO CHENG

Assignees

• 中兴通讯股份有限公司

Dates

Publication Date

20260508

Application Date

20220822

Claims (20)

1. 1. A wireless communication method for use in a wireless terminal, the method comprising: Receiving higher layer signaling from a radio network node comprising channel state information, CSI, reporting configuration information, wherein the CSI reporting configuration information comprises a list of trigger states, the list of trigger states comprising trigger states, each trigger state in the list of trigger states being associated with one or more CSI reporting configurations, one or more CSI reference signal resource configurations, and at least one of a delta of power control offsets, or a number of ports, wherein the delta of power control offsets indicates a change in power control offset, and wherein the power control offset used for CSI reporting is determined by the delta of power control offsets, and the power control offset configured in an associated CSI reference signal resource configuration; Receiving first signaling including a CSI report trigger state indication or pattern indication from the radio network node, and And reporting the CSI according to the high-layer signaling and the first signaling.
2. 2. The wireless communication method of claim 1, wherein the CSI reporting configuration information comprises at least one of: The CSI reporting configuration, or And configuring the CSI reference signal resource.
3. 3. The wireless communication method of claim 1, wherein the trigger state list comprises the trigger state associated with the CSI reporting configuration, and the time domain behavior of the CSI reporting configuration associated with the trigger state list comprises a plurality of time domain behaviors.
4. 4. The wireless communication method of claim 1, wherein each of the trigger states in the trigger state list is associated with a plurality of the CSI reporting configurations having the same or different time domain behaviors.
5. 5. The wireless communication method of claim 3 or 4, wherein the time domain behavior associated with each of the trigger states comprises at least one of periodic, aperiodic, semi-persistent on a physical uplink control channel, PUCCH, or semi-persistent on a physical uplink shared channel, PUSCH.
6. 6. The wireless communication method of claim 1, wherein each of the trigger states in the trigger state list is associated with at least one periodic CSI reporting configuration.
7. 7. The wireless communication method of claim 1, wherein the trigger state list comprises at least one subset trigger state list, wherein each subset trigger state list is associated with only one time domain behavior.
8. 8. The wireless communication method of claim 7, wherein the at least one subset trigger state list comprises at least one of: The list of states is triggered off of a periodicity, The list of states is triggered periodically and, The list of states is triggered semi-persistently, Semi-persistent trigger status list on PUSCH, or Semi-persistent trigger state list on PUCCH.
9. 9. The wireless communication method of claim 7 or 8, wherein when one of the trigger states with the same index in a different subset of trigger state lists is triggered, the trigger state with the same index is triggered.
10. 10. The wireless communication method of claim 1, wherein each of the trigger states in the trigger state list is further associated with at least one of: One or more transmission configuration indicators TCI status, A time offset between signaling triggering the trigger state and a time slot configured to report the CSI based on a CSI reporting configuration corresponding to the trigger state, The power control offset is used to control the power control offset, The power control is shifted by the synchronization signal SS, The delta of the port number is used for determining the port number, wherein the CSI is determined based on the port number or the port number of the CSI reference signal resource configuration or The number of repetitions indicates the number of times the CSI reference signal resource is repeated in the time domain.
11. 11. The wireless communication method of claim 2, wherein the CSI reporting configuration is associated with a plurality of CSI resource configurations for channel measurements and/or a plurality of non-zero power CSI reference signal resource configurations for interference measurements.
12. 12. The wireless communication method of claim 1, wherein a periodic CSI reporting configuration in the CSI reporting configuration information is associated with at least one of an aperiodic CSI reporting configuration, a triggered state in an aperiodic triggered state list, a triggered state in a semi-persistent triggered state list, or a semi-persistent CSI reporting configuration.
13. 13. The wireless communication method of claim 1, wherein a semi-persistent CSI report configuration in the CSI report configuration information is associated with an aperiodic CSI report configuration or the trigger state in an aperiodic trigger state list.
14. 14. The wireless communication method of claim 1, wherein a periodic CSI reporting configuration or a semi-persistent CSI reporting configuration is triggered if at least one of the following events occurs: Aperiodic CSI reporting configurations associated with the periodic CSI reporting configuration or the semi-persistent CSI reporting configuration are triggered, The trigger state associated with the periodic CSI reporting configuration or the semi-persistent CSI reporting configuration is triggered, or A semi-persistent CSI reporting configuration associated with the periodic CSI reporting configuration or the semi-persistent CSI reporting configuration is triggered.
15. 15. The wireless communication method of claim 1, wherein at least a portion of CSI reference signal resources included in a CSI resource configuration are valid if the CSI reporting configuration is triggered to be valid in the CSI reporting configuration information and associated with the CSI resource configuration.
16. 16. The wireless communications method of claim 15, wherein the effective CSI reference signal resources satisfy at least one condition.
17. 17. The wireless communication method of claim 15, wherein an effective CSI reference signal resource satisfies a condition that a number of ports of the effective CSI resource included in the CSI resource configuration is less than or equal to a number of ports of the CSI reporting configuration associated with the CSI resource configuration.
18. 18. The wireless communication method according to any of claims 15-17, wherein the effective CSI reference signal resources fulfill the condition that they are not configured with tracking reference signal information and/or repetition information.
19. 19. The wireless communication method of claim 1, wherein the first signaling comprises at least one of downlink control information, DCI, or medium access control, MAC, control unit, CE.
20. 20. The wireless communication method of claim 19, wherein the DCI is a group common DCI, a broadcast DCI, or a multicast DCI.

Description

Method for reporting channel state information and apparatus therefor Technical Field This document relates generally to wireless communications, particularly fifth generation (5G) wireless communications, and in particular to Channel State Information (CSI) measurements and reporting. Background With the development of wireless communication technology, transmission rate, throughput, reliability and other performance metrics of wireless communication systems have been greatly improved by using high frequency bands, large bandwidths, multiple antennas and other technologies. Meanwhile, with the deployment of 5G technology, greenhouse gas emissions from 5G base stations (e.g., gNB) and large power consumption have become a serious problem. Therefore, network energy saving is important not only for the green communication system but also for the reduction of the operation cost. In order to reduce the power consumption of the gNB, one potential approach is to reduce the number of antennas or antenna ports. A change in the number of antennas or antenna ports may have an effect on CSI measurement or CSI reporting. Thus, there is a need for a new method associated with CSI measurement and/or CSI reporting for different numbers of antennas or antenna ports. Disclosure of Invention The present document relates to methods, systems, and devices for wireless communications, and in particular for Channel State Information (CSI) measurements and reporting. The present disclosure relates to a wireless communication method for use in a wireless terminal. The method comprises the following steps: Higher layer signaling including channel state information CSI report configuration information is received from a radio network node, Receiving first signaling including a CSI report trigger state indication or pattern indication from a radio network node, an And reporting the CSI according to the high-layer signaling and the first signaling. Various embodiments may preferably implement the following features: Preferably, the CSI report configuration information comprises at least one of a CSI report configuration, a CSI-RS resource configuration, or a trigger state list. Preferably, the trigger state list comprises a trigger state associated with the CSI reporting configuration, and the time domain behaviors of the plurality of CSI reporting configurations associated with the trigger state list comprise a plurality of time domain behaviors. Preferably, each trigger state in the trigger state list is associated with multiple CSI reporting configurations with the same or different time domain behaviors. Preferably, the time domain behavior associated with each trigger state includes at least one of periodicity, aperiodicity, semi-persistence on a physical uplink control channel, PUCCH, or semi-persistence on a physical uplink shared channel, PUSCH. Preferably, each trigger state in the trigger state list is associated with at least one periodic CSI reporting configuration. Preferably, the trigger state list comprises at least one subset trigger state list, wherein each subset trigger state list is associated with only one time domain behavior. Preferably, the at least one subset trigger state list comprises at least one of a non-periodic trigger state list, a semi-persistent trigger state list on PUSCH, or a semi-persistent trigger state list on PUCCH. Preferably, when one of the trigger states having the same index in the different subset trigger state list is triggered, the trigger state having the same index is triggered. Preferably, each trigger state in the trigger state list is associated with at least one of one or more CSI reporting configurations, one or more transmission configuration indicator TCI states, one or more CSI reference signal resource configurations, a time offset between signaling of the trigger state and a time slot configured to report CSI based on the CSI reporting configuration corresponding to the trigger state, a difference in power control offset, a power control offset synchronization signal SS, a difference in number of ports used to determine the number of ports on which CSI is determined or the number of ports of the CSI reference signal resource configuration, a number of repetitions indicating the number of times the CSI reference signal resource is repeated in the time domain, or a number of ports. Preferably, the CSI reporting configuration is associated with a plurality of CSI resource configurations for channel measurements, and/or a plurality of non-zero power CSI reference signal resource configurations for interference measurements. Preferably, the periodic CSI reporting configuration in the CSI reporting configuration information is associated with at least one of an aperiodic CSI reporting configuration, a triggered state in an aperiodic triggered state list, a triggered state in a semi-persistent triggered state list, or a semi-persistent CSI reporting configuration. Preferably, the s