Sidelink DRX Wake-Up Timing for Lower Terminal Power Use
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Solution Overview
Problem
Existing DRX technology is not effectively applied to sidelink communication scenarios, leading to inefficient power consumption in terminals.
Innovation Solution
A method for controlling wakeup time in terminals by determining available resources in a resource pool and managing timers such as HARQ RTT, DRX retransmission, and inactivity timers based on these resources to optimize power usage during sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals continuously monitor PDCCH in wakeup state to ensure reliable communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by implementing discontinuous reception (DRX) where terminals alternate between wakeup states (monitoring PDCCH) and sleep states (not monitoring). The timer mechanism creates periodic monitoring intervals, allowing terminals to achieve reliable communication during active periods while conserving power during sleep periods.
Solution Approach 2:
The patent applies dynamics by making the terminal's monitoring behavior adaptive rather than static. The timer values (drx-InactivityTimer, drx-RetransmissionTimer) dynamically adjust the monitoring duration based on communication conditions, allowing the system to balance reliability and power consumption according to actual needs.
2Reliability
If terminals extend monitoring duration to cover potential retransmissions, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring timer values (drx-RetransmissionTimer) that anticipate potential retransmissions. The terminal starts monitoring for a predetermined period after initial transmission, ensuring coverage for expected retransmissions without extending monitoring indefinitely, thus balancing reliability with power conservation.
3Loss of information
If terminals monitor PDCCH during intervals without available resources, then resource availability detection is improved, but power consumption increases
Solution Approach 1:
The patent applies the taking out principle by extracting unnecessary monitoring activities. When no available resources are detected for a certain period, the terminal stops monitoring PDCCH, removing the harmful action of continuous monitoring during idle intervals while still maintaining the ability to detect resource availability when needed.
Data Source
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AI summary
The present disclosure relates to the technical field of communication and concerns a wake-up time control method and device and a computer-readable storage medium. The method comprises: a first terminal determines available resources in a resource pool, the available resources being resources for direct communication between the first terminal and a second terminal; and the first terminal controls the time when the first terminal is in a wake-up state on the basis of the available resources. The time when the first terminal is in the wakeup state is controlled on the basis of the available resources, so that a DRX technology is applied to a direct communication scene to reduce the power consumption of the first terminal.