V2X DRX Cycle Configuration for Pedestrian UE Power Saving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
V2X communication protocols lead to excessive power consumption in pedestrian UE terminals due to redundant message transmission, necessitating improved DRX cycle configuration for power saving.
Innovation Solution
A method and device for configuring DRX cycles based on Quality-of-Service and service mode information, including data burst degree, cyclicity, and acyclicity, to optimize activation and dormancy periods for V2X services, ensuring efficient power usage and service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X protocol transmits messages using broadcasting mode, then message coverage and service availability are improved, but terminal device power consumption increases excessively
Solution Approach 1:
The patent implements Discontinuous Reception (DRX) cycle configuration where the terminal alternates between active monitoring periods and sleep periods. The DRX cycle includes an on-duration parameter that defines how long the terminal monitors physical downlink control channels, followed by sleep periods where monitoring is suspended. This periodic action pattern reduces power consumption by eliminating continuous monitoring while maintaining service availability through scheduled wake-up periods.
2Duration of action of moving object
If DRX cycle duration is extended to save power, then terminal standby duration increases, but service response time deteriorates
Solution Approach 1:
The patent dynamically adjusts DRX cycle parameters based on service characteristics. Different services (e.g., safety-critical vs. non-critical) are assigned different DRX cycle configurations with varying on-duration and sleep period lengths. This dynamic adaptation allows the system to optimize the balance between standby duration and service response time according to specific service requirements, rather than using a fixed DRX configuration for all services.
Solution Approach 2:
The patent segments services into different categories based on their quality of service requirements and data characteristics. Services are divided into groups that require different DRX configurations, allowing the system to apply appropriate cycle lengths and monitoring durations to each segment. This segmentation enables simultaneous optimization for both power saving and response time across different service types.
3Reliability
If DRX cycle is configured with longer activation period to ensure data reception, then data reception success rate improves, but power consumption increases
Solution Approach 1:
The patent applies different DRX configuration parameters to different services based on their local characteristics. Services with high reliability requirements are assigned longer on-duration periods and more frequent wake-up cycles, while services with lower requirements use shorter activation periods. This localized quality approach ensures each service receives appropriate monitoring intensity without unnecessarily increasing overall power consumption.
Data Source
AI summary
A cycle configuration method includes: obtaining the Quality-of-Service information and service mode information of the V2X service, and the service mode information including the data burst degree information; generating the cycle configuration information of the DRX cycle of V2X service according to the Quality-of-Service information and service mode information. The cycle configuration information includes: any one or more of the DRX cycle duration of the DRX cycle, the activation period duration of the activation period, and the dormancy period duration of the dormancy period.