Sidelink Paging Resource Scheduling for Low-Power Message Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in reducing power consumption during sidelink communication, particularly in sidelink discontinuous reception (DRX) modes, where devices continue to listen for messages during certain time periods, leading to unnecessary power usage.
Innovation Solution
Implementing sidelink paging techniques that allow wireless devices to determine a set of resources for direct communication, establish a sidelink session, enter a reduced power state, monitor paging resources based on a schedule, receive paging messages, and exit the reduced power state upon message reception, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless devices continuously monitor for messages during sidelink DRX time periods, then message reception reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements discontinuous reception (DRX) where wireless devices periodically monitor for messages during specific time periods rather than continuously. The device enters a reduced power state outside of these monitoring periods, creating a periodic pattern of active and sleep states that reduces overall power consumption while maintaining message reception capability during active periods
Solution Approach 2:
The wireless device autonomously manages its own power state transitions by monitoring paging resources and independently entering/exiting reduced power states based on message detection, without requiring continuous network control or intervention for power management decisions
2Use of energy by moving object
If wireless devices enter reduced power state with minimal monitoring, then power consumption is reduced, but message detection capability deteriorates
Solution Approach 1:
The system performs preliminary setup of paging resources and monitoring schedules before the device enters reduced power state. The device pre-configures which paging resources to monitor during active periods, ensuring that when it wakes up, it can immediately and efficiently detect messages without needing extensive monitoring, thus maintaining detection capability while minimizing active time
Solution Approach 2:
The patent changes the monitoring parameter from continuous full-resource monitoring to periodic selective monitoring of specific paging resources. By adjusting the monitoring frequency and resource selection based on traffic patterns and power state, the system maintains adequate message detection capability while significantly reducing power consumption during reduced power states
Data Source
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.