US-12621842-B2 - Dynamic adaptation of time domain resource for periodic or semi-persistent downlink signals

Abstract

Apparatuses and methods for dynamic adaptation of a time domain resource for periodic or semi-persistent downlink signal are provided. A method of operating a user equipment (UE) includes receiving a set of configurations from a higher layer, identifying a first set of configurations from the set of configurations indicating resources for reception of downlink signals, and identifying a second set of configurations from the set of configurations for a physical downlink control channel (PDCCH) including a downlink control information (DCI) format. The DCI format includes adaptation information. The method further includes receiving the downlink signals based on the first set of configurations, receiving the PDCCH including the DCI format based on the second set of configurations, identifying, based on the adaptation information, a third set of configurations indicating the resources for reception of the downlink signals, and receiving the downlink signals based on the third set of configurations.

Inventors

• Hongbo Si
• Qiongjie Lin

Assignees

• SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date

20260505

Application Date

20230316

Claims (18)

1. 1 . A base station (BS) in a wireless communication system, the BS comprising: a transceiver configured to transmit a set of configurations by a higher layer, wherein a first configuration from the set of configurations indicates a first periodicity for transmission of downlink signals and a second configuration from the set of configurations for a physical downlink control channel (PDCCH) includes a downlink control information (DCI) format, wherein the DCI format includes adaptation information, transmit the downlink signals based on the first configuration, and transmit the PDCCH including the DCI format based on the second configuration; and a processor operably coupled to the transceiver and configured to identify, based on the adaptation information, a third configuration indicating a second periodicity for transmission of the downlink signals, wherein the transceiver is further configured to transmit the downlink signals based on the third configuration, wherein: the second periodicity is applied at a beginning of a slot, the slot occurs after an application time delay from a time of reception of the PDCCH, and the application time delay is pre-determined.
2. 2 . The BS of claim 1 , wherein the downlink signals include a synchronization signal and physical broadcast channel (SS/PBCH) block.
3. 3 . The BS of claim 1 , wherein: the set of configurations is user equipment (UE)-specific radio resource control (RRC) parameters, and the UE is in a CONNECTED mode.
4. 4 . The BS of claim 1 , wherein: the second configuration includes parameters for a common search space (CSS) set, the PDCCH is monitored based on the CSS set, and the PDCCH is UE-group-common.
5. 5 . The BS of claim 1 , wherein: the DCI format is associated with cyclic redundancy check (CRC) bits scrambled by a radio network temporary identifier (RNTI) dedicated for adapting between the first periodicity and the second periodicity, the second configuration further includes an indication on a location of a block within a set of blocks, the set of blocks are included in the DCI format, and the block includes the adaptation information.
6. 6 . The BS of claim 1 , wherein: the second configuration further includes an indication on a location of a block within a set of blocks, the set of blocks are included in the DCI format, and the block includes the adaptation information.
7. 7 . A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver configured to receive a set of configurations from a higher layer; and a processor operably coupled to the transceiver, the processor configured to: identify a first configuration from the set of configurations indicating a first periodicity for reception of downlink signals, and identify a second configuration from the set of configurations for a physical downlink control channel (PDCCH) including a downlink control information (DCI) format, wherein: the DCI format includes adaptation information, the transceiver is further configured to: receive the downlink signals based on the first configuration, and receive the PDCCH including the DCI format based on the second configuration, the processor is further configured to, based on the adaptation information, identify a third configuration indicating a second periodicity for reception of the downlink signals, the transceiver is further configured to receive the downlink signals based on the third configuration, the second periodicity is applied at a beginning of a slot, the slot occurs after an application time delay from a time of reception of the PDCCH, and the application time delay is pre-determined.
8. 8 . The UE of claim 7 , wherein the downlink signals include a synchronization signal and physical broadcast channel (SS/PBCH) block.
9. 9 . The UE of claim 7 , wherein: the set of configurations is UE-specific radio resource control (RRC) parameters, and the UE is in a CONNECTED mode.
10. 10 . The UE of claim 7 , wherein: the second configuration includes parameters for a common search space (CSS) set, the PDCCH is monitored based on the CSS set, and the PDCCH is UE-group-common.
11. 11 . The UE of claim 7 , wherein the DCI format is associated with cyclic redundancy check (CRC) bits scrambled by a radio network temporary identifier (RNTI) dedicated for adapting between the first periodicity and the second periodicity.
12. 12 . The UE of claim 7 , wherein: the second configuration further includes an indication on a location of a block within a set of blocks, the set of blocks are included in the DCI format, and the block includes the adaptation information.
13. 13 . A method of a user equipment (UE) in a wireless communication system, the method comprising: receiving a set of configurations from a higher layer; identifying a first configuration from the set of configurations indicating a first periodicity for reception of downlink signals; identifying a second configuration from the set of configurations for a physical downlink control channel (PDCCH) including a downlink control information (DCI) format, wherein the DCI format includes adaptation information; receiving the downlink signals based on the first configuration; receiving the PDCCH including the DCI format based on the second configuration; identifying, based on the adaptation information, a third configuration indicating a second periodicity for reception of the downlink signals; and receiving the downlink signals based on the third configuration, wherein: the second periodicity is applied at a beginning of a slot, the slot occurs after an application time delay from a time of reception of the PDCCH, and the application time delay is pre-determined.
14. 14 . The method of claim 13 , wherein the downlink signals include a synchronization signal and physical broadcast channel (SS/PBCH) block.
15. 15 . The method of claim 13 , wherein: the set of configurations is UE-specific radio resource control (RRC) parameters, and the UE is in a CONNECTED mode.
16. 16 . The method of claim 13 , wherein: the second configuration includes parameters for a common search space (CSS) set, the PDCCH is monitored based on the CSS set, and the PDCCH is UE-group-common.
17. 17 . The method of claim 13 , wherein the DCI format is associated with cyclic redundancy check (CRC) bits scrambled by a radio network temporary identifier (RNTI) dedicated for adapting between the first periodicity and the second periodicity.
18. 18 . The method of claim 13 , wherein: the second configuration further includes an indication on a location of a block within a set of blocks, the set of blocks are included in the DCI format, and the block includes the adaptation information.

Description

CROSS-REFERENCE TO RELATED APPLICATION AND CLAIM OF PRIORITY This application claims priority under 35 U.S.C. § 119 (e) to U.S. Provisional Patent Application No. 63/326,004 filed on Mar. 31, 2022, and U.S. Provisional Patent Application No. 63/326,560 filed on Apr. 1, 2022. The above-identified provisional patent applications are hereby incorporated by reference in their entirety. TECHNICAL FIELD The present disclosure relates generally to wireless communication systems and, more specifically, to dynamic adaptation of a time domain resource for periodic or semi-persistent downlink signals. BACKGROUND 5th generation (5G) or new radio (NR) mobile communications is recently gathering increased momentum with all the worldwide technical activities on the various candidate technologies from industry and academia. The candidate enablers for the 5G/NR mobile communications include massive antenna technologies, from legacy cellular frequency bands up to high frequencies, to provide beamforming gain and support increased capacity, new waveform (e.g., a new radio access technology (RAT)) to flexibly accommodate various services/applications with different requirements, new multiple access schemes to support massive connections, and so on. SUMMARY The present disclosure relates to apparatuses and methods for dynamic adaptation of a time domain resource for periodic or semi-persistent downlink signals. In one embodiment, a base station (BS) in a wireless communication system is provided. The BS includes a processor configured to identify a first set of configurations indicating resources for transmission of downlink signals and identify a second set of configurations for a physical downlink control channel (PDCCH) including a downlink control information (DCI) format. The DCI format includes adaptation information. The BS also includes a transceiver operably coupled to the processor. The transceiver is configured to transmit a set of configurations by a higher layer. The set of configurations include the first set of configurations and the second set of configurations. The transceiver is further configured to transmit the downlink signals based on the first set of configurations and transmit the PDCCH including the DCI format based on the second set of configurations. The processor is further configured to identify, based on the adaptation information, a third set of configurations indicating the resources for transmission of the downlink signals. The transceiver is further configured to transmit the downlink signals based on the third set of configurations. In another embodiment, a user equipment (UE) in a wireless communication system is provided. The UE includes a transceiver configured to receive a set of configurations from a higher layer and a processor operably coupled to the transceiver. The processor is configured to identify a first set of configurations from the set of configurations indicating resources for reception of downlink signals and identify a second set of configurations from the set of configurations for a PDCCH including a DCI format. The DCI format includes adaptation information. The transceiver is further configured to receive the downlink signals based on the first set of configurations and receive the PDCCH including the DCI format based on the second set of configurations. The processor is further configured to, based on the adaptation information, identify a third set of configurations indicating the resources for reception of the downlink signals. The transceiver is further configured to receive the downlink signals based on the third set of configurations. In yet another embodiment, a method of a UE in a wireless communication system is provided. The method includes receiving a set of configurations from a higher layer, identifying a first set of configurations from the set of configurations indicating resources for reception of downlink signals, and identifying a second set of configurations from the set of configurations for a PDCCH including a DCI format. The DCI format includes adaptation information. The method further includes receiving the downlink signals based on the first set of configurations, receiving the PDCCH including the DCI format based on the second set of configurations, identifying, based on the adaptation information, a third set of configurations indicating the resources for reception of the downlink signals, and receiving the downlink signals based on the third set of configurations. Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims. Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term “couple” and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The term