Sidelink DRX Configuration for Multi-Link V2X Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sidelink communication technologies face challenges in reducing power consumption and improving communication reliability, particularly in complex scenarios like unicast, broadcast, and multicast, within the vehicle-to-everything (V2X) system.
Innovation Solution
Implementing a sidelink communication method that configures and maintains discontinuous reception (DRX) parameters for multiple sidelinks based on specific configuration information, including timers and cycles, to optimize power usage and ensure reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DRX is configured for multiple sidelinks of the terminal device, then power consumption is reduced, but communication reliability may deteriorate due to obfuscation of multiple DRX configurations
Solution Approach 1:
The patent segments the DRX configuration by creating separate DRX configurations for different sidelinks (first DRX configuration for first sidelink, second DRX configuration for second sidelink). Each sidelink has its own independent DRX parameters including onDurationTimer, drx-HARQ-RTT-Timer, and drx-RetransmissionTimer, allowing independent management and avoiding configuration obfuscation while maintaining power savings.
Solution Approach 2:
The patent applies local quality by tailoring DRX parameters specifically for each sidelink based on its communication requirements. Each sidelink can have customized onDurationTimer values, HARQ RTT timer values, and retransmission timer values optimized for its specific traffic pattern and reliability requirements, rather than using a unified DRX configuration.
2Device complexity
If multiple DRX configurations are maintained without separate management, then device complexity is reduced, but communication failure occurs due to configuration obfuscation
Solution Approach 1:
The patent segments DRX configuration management by associating each DRX configuration with a specific sidelink identifier (first sidelink identifier, second sidelink identifier). The terminal device maintains separate DRX configuration sets in a structured manner, where each configuration is clearly tagged and managed independently, preventing obfuscation while organizing complexity systematically.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of sidelink identifiers that mediate between the multiple DRX configurations and the terminal device's DRX management functionality. These identifiers act as keys to selectively apply the correct DRX configuration for each sidelink, simplifying the selection process while ensuring accurate configuration application.
Data Source
AI summary
This application provides a sidelink communication method. The method includes: A first terminal device determines one or more pieces of first configuration information, where the one or more pieces of first configuration information correspond to one or more sidelinks, each piece of the first configuration information is used to configure a discontinuous reception DRX related parameter of a corresponding sidelink, and the first terminal device is a sending device or a receiving device on the one or more sidelinks. The first terminal device maintains, based on each piece of the first configuration information, a status of the discontinuous reception DRX corresponding to each piece of the first configuration information.