Discontinuous reception method, related apparatus and system
By starting a timer after the HARQ feedback timing in the Sidelink HARQ process, the data retransmission delay problem caused by TX UE sleep in the prior art is solved, and the efficiency and timeliness of Sidelink data retransmission are achieved.
CN116056254BActive Publication Date: 2026-01-02HUAWEI TECH CO LTD
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Patent Information
- Application Number
- CN202310225180.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-08-16
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2039-08-16
AI Technical Summary
Technical Problem
In Long Term Evolution (LTE) or New Radio (NR) systems, existing discontinuous reception mechanisms may cause the TX UE to enter a sleep state in Sidelink retransmission scenarios, resulting in data retransmission delays.
Method used
After the HARQ feedback timing of the Sidelink HARQ process, the drx-HARQ-RTT-TimerSL timer is started, and when the timeout occurs and the HARQ feedback is NACK, the drx-RetransmissionTimerSL timer is started to ensure that the device listens to the PDCCH to receive retransmission schedules during the timer's operation.
Benefits of technology
It improves the efficiency of Sidelink data retransmission, avoids data retransmission delays, and ensures timely resource scheduling and retransmission.
✦ Generated by Eureka AI based on patent content.
Abstract
The present application relates to a discontinuous reception method, after the first time unit, such as the first symbol, of the HARQ feedback occasion of the Sidelink HARQ process, the first terminal can start the drx-HARQ-RTT-TimerSL, and start the drx-RetransmissionTimerSL when the drx-HARQ-RTT-TimerSL expires. During the running of the drx-RetransmissionTimerSL, the first terminal listens to the physical downlink control channel (PDCCH). In this way, the efficiency of Sidelink retransmission can be improved, the delay of Sidelink retransmission can be avoided, and better support can be provided for Sidelink-based applications, such as unmanned driving, automated driving / ADS, driver assistance / ADAS, intelligent driving, connected driving, intelligent network driving, car sharing, and other artificial intelligence fields.
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