Sidelink DTX Scheduling for Lower Terminal Power Consumption
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Solution Overview
Problem
The high power consumption in Sidelink communication systems, particularly for pedestrian handheld terminals, due to continuous monitoring of resource pools in 5G NR V2X systems, is a significant challenge.
Innovation Solution
Implementing a method for Sidelink terminals to acquire discontinuous transmission (DTX) configurations from network nodes, determining specific time ranges for awake or sleep states based on these configurations, and dynamically adjusting power consumption patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring of resource pools is implemented in Sidelink communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements discontinuous transmission (DTX) configuration where terminals periodically switch between awake and sleep states. The terminal monitors resource pools only during configured awake time ranges and enters sleep state during other periods, transforming continuous monitoring into periodic action. This reduces power consumption while maintaining communication reliability through scheduled monitoring intervals.
Solution Approach 2:
The patent introduces dynamic power consumption patterns by allowing terminals to dynamically adjust between awake and sleep states based on DTX configuration. The terminal can flexibly transition between different operational states (awake for monitoring, sleep for energy saving) according to configured time ranges, making the power consumption pattern adaptive rather than static.
2Use of energy by moving object
If terminals enter sleep state to save energy, then power consumption is reduced, but communication responsiveness deteriorates
Solution Approach 1:
The patent applies preliminary action by configuring DTX parameters in advance through network signaling. The terminal receives and stores DTX configuration (including awake time ranges, sleep durations, and cycle periods) before entering sleep state. This pre-configuration ensures the terminal can quickly wake up at the correct time without delay, maintaining communication responsiveness while saving energy during sleep periods.
Solution Approach 2:
The patent implements feedback mechanisms where the network node receives uplink feedback from terminals and can adjust DTX configuration accordingly. This feedback loop ensures that if communication responsiveness requirements change, the network can reconfigure DTX parameters to optimize the balance between power saving and responsiveness, making the system adaptive to actual communication needs.
Data Source
AI summary
The present disclosure relates to a pre-5th generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th generation (4G) communication system such as long term evolution (LTE). The application provides an energy-saving method and a device in a Sidelink system, the method includes: acquiring discontinuous transmission DTX configuration from a network node; determining a first time range and/or a second time range according to the acquired DTX configuration; staying awake in the first time range, or entering into a sleep state in the second time range.