Sidelink DRX Configuration for Low-Power V2X Pedestrian UEs
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Solution Overview
Problem
Pedestrian user equipment (P-UE) with low battery capacity and limited wireless capabilities experiences high energy consumption due to continuous sidelink communication in V2X scenarios, necessitating an energy-efficient solution.
Innovation Solution
Implementing a sidelink discontinuous reception (DRX) parameter configuration method that determines sleep times based on location information and communication type, allowing P-UE to skip receiving sidelink control information during designated sleep periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal continuously receives and monitors sidelink control information to ensure communication reliability, then the communication reliability is improved, but the energy consumption increases
Solution Approach 1:
The patent implements discontinuous reception (DRX) for sidelink control information, where the terminal periodically wakes up to monitor sidelink control channels and then enters sleep mode. This periodic monitoring approach maintains communication reliability by ensuring the terminal checks for important messages at regular intervals while significantly reducing energy consumption compared to continuous monitoring.
2Use of energy by moving object
If the terminal enters sleep mode to reduce energy consumption, then the energy consumption is reduced, but the response time to incoming communications increases
Solution Approach 1:
The patent dynamically adjusts the DRX cycle length and wake-up timing based on communication conditions. When communication activity is detected or during high-priority transmission periods, the terminal shortens its sleep duration and increases monitoring frequency. During low-activity periods, it extends sleep duration to maximize energy savings. This dynamic adaptation balances energy consumption with response time requirements.
3Loss of information
If the terminal monitors all sidelink control channels continuously to ensure no information is missed, then the information completeness is improved, but the device complexity increases
Solution Approach 1:
The patent extracts and prioritizes only the most critical sidelink control information that requires continuous monitoring, while allowing non-critical information to be monitored periodically or deferred. This selective monitoring approach ensures that essential communication information is not missed while reducing the overall monitoring burden and device complexity.
Data Source
AI summary
An energy saving method and an energy saving apparatus, a parameter configuration method and a parameter configuration apparatus, a UE, a base station and a storage medium are provided. The energy saving method includes: acquiring a sidelink discontinuous reception (DRX) parameter, where the sidelink DRX parameter is determined according to location information, a sidelink communication type and a related configuration parameter of a UE; and within a sidelink sleep time corresponding to the sidelink DRX parameter, not receiving sidelink control information (SCI) from a target equipment.