Adaptive Sidelink DRX Configuration for V2X Power and Data Balance
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Solution Overview
Problem
In wireless communication systems, there is a challenge in reducing power consumption of terminal devices while ensuring effective data transmission on sidelinks, particularly in V2X scenarios where existing discontinuous reception mechanisms are inefficient.
Innovation Solution
A sidelink discontinuous reception (SL DRX) configuration enabling mechanism is introduced, where a first terminal device determines and sends indication information to a second terminal device to enable or disable SL DRX based on the status or requirements of the second terminal device, using various types of messages to facilitate efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception mechanism is introduced to reduce power consumption, then power consumption of terminal device is reduced, but data transmission effectiveness on sidelink deteriorates
Solution Approach 1:
The patent applies dynamics by making the DRX configuration adjustable and adaptable based on service requirements. The network device can dynamically configure different DRX parameters (such as drx-OnDuration, drx-InactivityTimer, drx-RetransmissionTimer) according to the specific service type and data transmission needs, allowing the system to transition between power-saving mode and high-reliability mode as conditions change.
Solution Approach 2:
The patent implements parameter changes by modifying DRX configuration parameters based on service requirements. The network device evaluates service characteristics (e.g., latency sensitivity, data volume, reliability requirements) and adjusts DRX parameters accordingly - using longer sleep intervals for power-consuming services and shorter intervals for reliability-critical services, thus resolving the contradiction between power consumption and transmission effectiveness.
2Use of energy by moving object
If SL DRX configuration is enabled for all sidelinks, then power consumption is reduced uniformly, but configuration complexity and inefficiency increase
Solution Approach 1:
The patent applies local quality by implementing differentiated DRX configurations for different sidelinks based on their specific service requirements. Instead of applying a uniform DRX configuration across all sidelinks, the network device evaluates each sidelink's service characteristics independently and configures appropriate DRX parameters locally, ensuring that each communication pair receives optimized power-saving treatment without compromising overall system complexity.
3Reliability
If terminal device continuously monitors sidelink for effective data transmission, then data transmission effectiveness is ensured, but power consumption increases
Solution Approach 1:
The patent implements periodic action through the DRX mechanism, where the terminal device alternates between active monitoring periods and sleep periods on the sidelink. During drx-OnDuration, the device actively monitors for data transmissions; during drx-Sleep periods, it enters low-power state. This periodic pattern ensures that data transmission effectiveness is maintained during active periods while significantly reducing power consumption during sleep periods.
Data Source
AI summary
This application provides a configuration enabling method and an apparatus. The method includes: A first terminal device determines first indication information, where the first indication information indicates an enabling operation determined for a first sidelink, the enabling operation includes enabling a sidelink discontinuous reception SL DRX configuration for the first sidelink, or disabling an SL DRX configuration for the first sidelink, and the first sidelink is a sidelink between the first terminal device and a second terminal device. The first terminal device sends the first indication information to the second terminal device. According to the method provided in this application, the first terminal device introduces an SL DRX configuration enabling mechanism based on a status or a requirement of the second terminal device. This improves user experience.