Sidelink Paging DRX for Lower-Power Direct Wireless Links
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Solution Overview
Problem
There is a need to further reduce power consumption in wireless communication devices by optimizing sidelink paging techniques.
Innovation Solution
Implementing sidelink discontinuous reception (DRX) to allow wireless devices to listen for messages only during specific time periods, combined with efficient paging techniques to minimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless devices continuously monitor sidelink messages to ensure reliable communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements discontinuous reception (DRX) cycles where the wireless device alternates between active monitoring periods and sleep periods. During each DRX cycle, the device monitors sidelink messages only during specific on-duration windows and remains in low-power state during off-duration periods, thereby reducing power consumption while maintaining communication reliability through periodic monitoring.
2Reliability
If wireless devices monitor sidelink messages during extended time periods to capture all communications, then message reception reliability is improved, but battery life deteriorates
Solution Approach 1:
The patent employs DRX cycles with configured on-duration and off-duration periods, allowing the device to monitor messages periodically rather than continuously. This periodic monitoring approach ensures that important messages are captured during active windows while extending battery life by minimizing active reception time.
Solution Approach 2:
The patent enables dynamic adjustment of DRX cycle parameters including on-duration length, off-duration length, and periodicity. These parameters can be adapted based on communication conditions, traffic patterns, and priority levels, allowing the system to optimize the balance between message reception reliability and battery life consumption.
Data Source
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AI summary
A technique for power saving for a wireless device, the technique including determining, by a first wireless device, a set of resources for communicating directly with a second wireless device the set of resources including a first set of paging resources, establishing a sidelink session with the second wireless device based on the set of resources, entering, by the first wireless device, a reduced power state, monitoring, by the first wireless device and based on the paging schedule, the first set of paging resources, receiving, from the second wireless device, a paging message, exiting the reduced power state based on the received paging message, and monitoring, based on the received paging message, the set of resources.