US-12621030-B2 - Enhanced CSI reporting activation/deactivation operation

Abstract

Example embodiments of the present disclosure provide solutions for enhanced channel state information (CSI) activation/deactivation operation. In an example method, a terminal device receives a MAC CE comprising at least one field for a CSI report configuration, wherein the CSI report configuration comprises a plurality of sub-configurations. The terminal device further determines activation or deactivation of at least one of the plurality of sub-configurations at least based on the at least one field in the MAC CE. In this way, the operation of activating/deactivating CSI reporting for one or more sub-configurations is enabled when multiple sub-configurations are included or associated with a same CSI reporting configuration.

Inventors

• MATHA DEGHEL
• Samuli Heikki TURTINEN
• Chunli Wu

Assignees

• NOKIA TECHNOLOGIES OY

Dates

Publication Date

20260505

Application Date

20250409

Claims (20)

1. 1 . A terminal device comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to: receive a medium access control (MAC) control element (MAC CE) comprising an octet including multiple fields, wherein the multiple fields indicate a respective activation or deactivation status of multiple channel state information (CSI) report configurations, wherein each CSI report configuration of the multiple CSI report configurations comprises a respective plurality of sub-configurations, and wherein, if a respective CSI report configuration of the multiple CSI report configurations has an activation status, the MAC CE comprises a respective further octet including at least one further field, wherein the at least one further field indicates an activation or deactivation status of at least one of the plurality of sub-configurations of the respective CSI report configuration; and if the respective CSI report configuration of the multiple CSI report configurations has a deactivation status, the MAC CE does not comprise the respective further octet; and determine, if the respective CSI report configuration of the multiple CSI report configurations has an activation status, the activation or deactivation status of the at least one of the plurality of sub-configurations of the respective CSI report configuration at least based on the at least one further field of the MAC CE.
2. 2 . The terminal device of claim 1 , wherein the terminal device is caused to: perform CSI measurement using a sub-configuration having an activation status; and report results of the CSI measurement to the network device.
3. 3 . The terminal device of claim 1 , wherein the at least one further field indicates an index of a sub-configuration or a set of sub-configurations among the plurality of sub-configurations to activate or deactivate.
4. 4 . The terminal device of claim 1 , wherein the at least one further field comprises a bitmap for the plurality of sub-configurations, and a bit in the bitmap indicates the activation or deactivation status of a sub-configuration or a set of sub-configurations among the plurality of sub-configurations.
5. 5 . The terminal device of claim 1 , wherein the at least one further field indicates a number of sub-configurations among the plurality of sub-configurations to activate or deactivate, and wherein the terminal device is caused to determine activation or deactivation of at least one of the plurality of sub-configurations by: determining an index of the at least one of the plurality of sub-configurations to activate or deactivate based on the indicated number and a defined order of indexes of the plurality of sub-configurations.
6. 6 . The terminal device of claim 1 , wherein a size of the at least one further field is based on a number of the plurality of sub-configurations or sets of sub-configurations of the CSI report configuration.
7. 7 . The terminal device of claim 1 , wherein at least one field indicating an activation or deactivation status of the respective CSI report configuration comprises at least one of the following: at least one reserved bit of the octet; at least one bit beyond the octet; and at least one additional octet other than the octet.
8. 8 . The terminal device of claim 7 , wherein the terminal device is caused to determine activation or deactivation of the at least one of the plurality of sub-configurations of the respective CSI report configuration by: based on determining that the respective CSI report configuration has a deactivation status, determining deactivation of the plurality of sub-configurations of the respective CSI report configuration.
9. 9 . The terminal device of claim 7 , wherein the octet including multiple fields is at least shared between the CSI report configuration and another one of the multiple CSI report configurations.
10. 10 . The terminal device of claim 9 , wherein the terminal device is caused to determine activation or deactivation of the at least one of the plurality of sub-configurations by: based on determining that the respective CSI report configuration has an activation status, determining activation or deactivation of the at least one of the plurality of sub-configurations based on the at least one further field in the MAC CE.
11. 11 . The terminal device of claim 7 , wherein the terminal device is caused to determine activation or deactivation of the at least one of the plurality of sub-configurations by: positioning the at least one further field for the CSI report configuration in the MAC CE; and determining activation or deactivation of the at least one of the plurality of sub-configurations based on a value of the at least one further field.
12. 12 . The terminal device of claim 11 , wherein the positioning of the at least one further field is at least based on at least one of the following: the activation or deactivation statuses of the multiple CSI report configurations; a number of the plurality of sub-configurations or sets of sub-configurations of each of at least one of the multiple CSI report configurations; or an index or an identity of the CSI report configuration.
13. 13 . The terminal device of claim 1 , wherein the terminal device is caused to determine activation or deactivation of at least one of the plurality of sub-configurations by: determining, based on the at least one further field and a threshold, activation or deactivation of at least one sub-configuration or set of sub-configurations, such that a number of activated sub-configurations or sets of sub-configurations is equal to or less than the threshold.
14. 14 . The terminal device of claim 1 , wherein the activation or deactivation of at least one of the plurality of sub-configurations indicate that the at least one sub-configuration is applicable or inapplicable respectively.
15. 15 . The terminal device of claim 1 , wherein a sub-configuration among the plurality of sub-configurations corresponds to or is associated with at least one of the following: a spatial pattern; a power level; an energy level; a CSI-reference signal (RS) resource; a CSI-RS resource set; a resource setting; a CSI report configuration; a codebook configuration; or a CSI triggering state.
16. 16 . The terminal device of claim 1 , wherein the respective CSI report configuration is for semi-persistent CSI reporting on physical uplink control channel (PUCCH).
17. 17 . The terminal device of claim 1 , wherein the terminal device is caused to: determine if the respective CSI report configuration of the multiple CSI report configurations has an activation status or deactivation status.
18. 18 . A network device comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to: generate a medium access control (MAC) control element (MAC CE) comprising an octet including multiple fields, wherein the multiple fields indicate a respective activation status or deactivation status of multiple channel state information (CSI) report configurations, wherein each CSI report configuration of the multiple CSI report configurations comprises a respective plurality of sub-configurations; and wherein, if a respective CSI report configuration of the multiple CSI report configurations has an activation status, the MAC CE comprises a respective further octet including at least one further field, wherein the at least one further field indicates an activation or deactivation status of at least one of the plurality of sub-configurations of the respective CSI report configuration; and if the respective CSI report configuration of the multiple CSI report configurations has a deactivation status, the MAC CE does not comprise the respective further octet; and transmit the MAC CE to a terminal device.
19. 19 . The network device of claim 18 , wherein the at least one further field indicates an index of a sub-configuration or a set of sub-configurations among the plurality of sub-configurations to activate or deactivate.
20. 20 . The network device of claim 18 , wherein the at least one further field comprises a bitmap for the plurality of the sub-configurations, and a bit in the bitmap indicates an activation or deactivation status of a sub-configuration or a set of sub-configurations among the plurality of sub-configurations.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2023/093882, filed May 12, 2023, the entire contents of which are incorporated herein by reference. FIELD Example embodiments of the present disclosure generally relate to the field of communication, and in particular, to a terminal device, a network device, methods, apparatuses, and a computer readable medium for enhanced channel state information (CSI) activation/deactivation operation. BACKGROUND Network energy saving is of great importance for environmental sustainability, to reduce environmental impact (greenhouse gas emissions), and for operational cost saving. As new radio (NR), also known as fifth-generation technology standard for broadband cellular networks (5G), is becoming pervasive across industries and geographical areas, handling more advanced services and applications requiring very high data rates, networks are being denser, use more antennas, larger bandwidths and more frequency bands, which means an increasing energy consumption. Therefore, the environmental impact of 5G and the operational operating expense need to stay under control, and improved solutions for energy saving in 5G need to be further investigated and studied. SUMMARY In general, example embodiments of the present disclosure provide solutions for enhanced channel state information (CSI) activation/deactivation operation. In a first aspect, there is provided a terminal device. The terminal device comprises at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to: receive a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration, wherein the CSI report configuration comprises a plurality of sub-configurations; and determine activation or deactivation of at least one of the plurality of sub-configurations at least based on the at least one field in the MAC CE. In a second aspect, there is provided a network device. The network device comprises at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to: generate a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration based on activation or deactivation of at least one of a plurality of sub-configurations of the CSI report configuration; and transmit the MAC CE to a terminal device. In a third aspect, there is provided a method. The method comprises: receiving, at a terminal device, a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration, wherein the CSI report configuration comprises a plurality of sub-configurations; and determining activation or deactivation of at least one of the plurality of sub-configurations at least based on the at least one field in the MAC CE. In a fourth aspect, there is provided a method. The method comprises: generating, at a network device, a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration based on activation or deactivation of at least one of a plurality of sub-configurations of the CSI report configuration; and transmitting the MAC CE to a terminal device. In a fifth aspect, there is provided an apparatus. The apparatus comprises: means for receiving, at a terminal device, a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration, wherein the CSI report configuration comprises a plurality of sub-configurations; and means for determining activation or deactivation of at least one of the plurality of sub-configurations at least based on the at least one field in the MAC CE. In a sixth aspect, there is provided an apparatus. The apparatus comprises: means for generating, at a network device, a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration based on activation or deactivation of at least one of a plurality of sub-configurations of the CSI report configuration; and means for transmitting the MAC CE to a terminal device. In a seventh aspect, there is provided a non-transitory computer-readable storage medium comprising program instructions. The program instructions, when executed by an apparatus, cause the apparatus to perform at least the following: receiving, at a terminal device, a medium access control (MAC) control element (MAC CE) comprising at least one field for a channel state information (CSI) report configuration, wherein the CSI report configuration comprises a plurality of sub-configurations; and determinin