Search

US-12621903-B2 - Method and apparatus for enhancing DRX configuration in wireless communication system

US12621903B2US 12621903 B2US12621903 B2US 12621903B2US-12621903-B2

Abstract

The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving configuration information regarding a discontinuous reception (DRX) from a base station, starting a first timer based on the configuration information, and monitoring a physical downlink control channel (PDCCH) based on the first timer, wherein the configuration information includes a first timer value for a first subcarrier spacing (SCS) group and a first timer value for a second SCS group.

Inventors

  • Taeseop LEE
  • Anil Agiwal
  • Jaehyuk JANG
  • Seungri Jin

Assignees

  • SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date
20260505
Application Date
20230420
Priority Date
20220422

Claims (12)

  1. 1 . A method performed by a user equipment (UE) in a wireless communication system, the method comprising: transmitting, to a base station, UE capability information; receiving, from the base station, configuration information regarding a discontinuous reception (DRX) operation, wherein the configuration information includes a first value of a timer for a first subcarrier spacing (SCS) group and a second value of the timer for a second SCS group, in case that the UE is identified based on the UE capability information to support the second SCS group; applying one of the first value of the timer and the second value of the timer to the timer based on a SCS group, wherein the first value of the timer is applied to the first SCS group, and the second value of the timer is applied to the second SCS group; and performing the DRX operation based on the timer, wherein the first SCS group includes 15 KHz SCS, 30 KHz SCS, 60 KHz SCS, and 120 KHz SCS, and the second SCS group includes 480 KHz SCS and 960 KHz SCS.
  2. 2 . The method of claim 1 , wherein the timer includes a drx-HARQ-RTT-TimerUL timer and a drx-HARQ-RTT-TimerDL timer.
  3. 3 . The method of claim 1 , further comprising: receiving, from the base station, a request for the UE capability information.
  4. 4 . A method performed by a base station in a wireless communication system, the method comprising: receiving, from a user equipment (UE), UE capability information; transmitting, to the UE, configuration information regarding a discontinuous reception (DRX) operation, wherein the configuration information includes a first value of a timer for a first subcarrier spacing (SCS) group and a second value of the timer for a second SCS group, in case that the UE is identified based on the UE capability information to support the second SCS group; and performing the DRX operation based on the timer, wherein the one of the first value of the timer and the second value of the timer is applied to the timer based on a SCS group, wherein the first value of the timer is applied to the first SCS group, and the second value of the timer is applied to the second SCS group, and wherein the first SCS group includes 15 KHz SCS, 30 KHz SCS, 60 KHz SCS, and 120 KHz SCS, and the second SCS group includes 480 KHz SCS and 960 KHz SCS.
  5. 5 . The method of claim 4 , wherein each of the first value of the timer for the first SCS group and the second value of the timer for the second SCS group is for at least one of a drx-HARQ-RTT-TimerUL timer or a drx-HARQ-RTT-TimerDL timer.
  6. 6 . The method of claim 4 , further comprising: transmitting, to the UE, a request for the UE capability information.
  7. 7 . A user equipment (UE) in a wireless communication system, the UE comprising: at least one transceiver; and at least one processor operatively coupled with the at least one transceiver, wherein the at least one processor is configured to: transmit, to a base station, UE capability information, receive, from the base station, configuration information regarding a discontinuous reception (DRX) operation, wherein the configuration information includes a first value of a timer for a first subcarrier spacing (SCS) group and a second value of the timer for a second SCS group, in case that the UE is identified based on the UE capability information to support the second SCS group, apply one of the first value of the timer and the second value of the timer to the timer based on a SCS group, wherein the first value of the timer is applied to the first SCS group, and the second value of the timer is applied to the second SCS group, and perform the DRX operation based on the timer, and wherein the first SCS group includes 15 KHz SCS, 30 KHz SCS, 60 KHz SCS, and 120 KHz SCS, and the second SCS group includes 480 KHz SCS and 960 KHz SCS.
  8. 8 . The UE of claim 7 , wherein the timer includes a drx-HARQ-RTT-TimerUL timer and a drx-HARQ-RTT-TimerDL timer.
  9. 9 . The UE of claim 7 , wherein the at least one processor is further configured to: receive, from the base station, a request for the UE capability information.
  10. 10 . A base station in a wireless communication system, the base station comprising: at least one transceiver; and at least one processor operatively coupled with the at least one transceiver, wherein the at least one processor is configured to: receive, from a user equipment (UE), UE capability information, transmit, to the UE, configuration information regarding a discontinuous reception (DRX) operation, wherein the configuration information includes a first value of a timer for a first subcarrier spacing (SCS) group and a second value of the timer for a second SCS group, in case that the UE is identified based on the UE capability information to support the second SCS group, and perform the DRX operation based on the timer, wherein the one of the first value of the timer and the second value of the timer is applied to the timer based on a SCS group, wherein the first value of the timer is applied to the first SCS group, and the second value of the timer is applied to the second SCS group, and wherein the first SCS group includes 15 KHz SCS, 30 KHz SCS, 60 KHz SCS, and 120 KHz SCS, and the second SCS group includes 480 KHz SCS and 960 KHz SCS.
  11. 11 . The base station of claim 10 , wherein each of the first value of the timer for the first SCS group and the second value of the timer for the second SCS group is for at least one of a drx-HARQ-RTT-TimerUL timer or a drx-HARQ-RTT-TimerDL timer.
  12. 12 . The base station of claim 10 , wherein the at least one processor is further configured to: transmit, to the UE, a request for UE capability.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is based on and claims priority under 35 U.S.C. § 119(a) of a Korean patent application number 10-2022-0050060, filed on Apr. 22, 2022, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety. BACKGROUND 1. Field The disclosure relates to a communication method of a wireless communication. More particularly, the disclosure relates to a method and an apparatus for enhancing a discontinue reception (DRX) configuration. 2. Description of Related Art 5th generation (5G) mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6 gigahertz (GHz)” bands such as 3.5 GHz, but also in “Above 6 GHz” bands referred to as millimeter wave (mmWave) including 28 GHz and 39 GHz. In addition, it has been considered to implement 6th generation (6G) mobile communication technologies (referred to as Beyond 5G systems) in terahertz (THz) bands (for example, 95 GHz to 3 THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive multi input multi output (MIMO) for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BandWidth Part (BWP), new channel coding methods such as a Low Density Parity Check (LDPC) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as Vehicle-to-everything (V2X) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, New Radio Unlicensed (NR-U) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, new radio (NR) user equipment (UE) Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, Integrated Access and Backhaul (IAB) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and Dual Active Protocol Stack (DAPS) handover, and two-step random access for simplifying random access procedures (2-step random access channel (RACH) for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile com