Sidelink DRX Indication for Network Resource Scheduling
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Solution Overview
Problem
Network side devices cannot accurately determine the Discontinuous Reception (DRX) and Discontinuous Transmission (DTX) activation times for sidelink interfaces, leading to inefficient resource scheduling and reduced utilization rates in communication systems.
Innovation Solution
Terminals send indication information to network side devices about their sidelink DRX/DTX usage conditions, allowing for accurate scheduling of sidelink interfaces based on the provided information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal autonomously determines SL DRX/DTX usage based on data destination, then the terminal can optimize power consumption, but the network side device cannot accurately determine DRX activation time leading to poor resource scheduling
Solution Approach 1:
The terminal feeds back SL DRX/DTX usage indication information to the network side device through RRC signaling or MAC CE. This feedback mechanism enables the network side device to obtain accurate information about the terminal's DRX/DTX activation status, allowing for optimized resource scheduling decisions that improve productivity while maintaining the terminal's power consumption optimization strategy.
2Productivity
If the terminal sends detailed indication information about SL DRX/DTX usage, then the network side device can perform accurate resource scheduling, but the signaling overhead increases
Solution Approach 1:
The patent extracts only the essential SL DRX/DTX usage indication information that the network side device needs for resource scheduling, rather than transmitting complete DRX configuration details. This selective information extraction reduces signaling overhead while maintaining sufficient accuracy for resource scheduling decisions.
Solution Approach 2:
The terminal provides partial information about SL DRX/DTX usage (whether it is applied and activation time) rather than complete configuration details. This partial information approach is sufficient for the network side device to perform accurate resource scheduling without incurring excessive signaling overhead.
3Use of energy by moving object
If SL DRX/DTX is applied for all sidelink destinations, then power saving is maximized, but resource utilization rate decreases due to inaccurate network scheduling
Solution Approach 1:
The terminal provides feedback about SL DRX/DTX usage status to the network side device, enabling the network to accurately determine when the terminal is in active state. This allows the network to schedule resources efficiently during active periods, maintaining high resource utilization rate while the terminal continues to maximize power saving through SL DRX/DTX application.
Data Source
AI summary
An information transmission method and apparatus, a resource scheduling method and apparatus, a terminal and a network side device are provided. The method includes sending indication information to the network side device by the terminal, the indication information is used to indicate a usage condition of SL DRX and/or SL DTX of the terminal.