Sidelink Partial Sensing Periodicities for Lower-Power Resource Selection
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Solution Overview
Problem
The power consumption of terminals in sidelink communication systems increases due to partial sensing operations, and continuous transmission conflicts occur when random selection operations are used, leading to deteriorated performance.
Innovation Solution
Implementing a partial sensing operation based on configured periodicities and random selection with resource offsets to reduce power consumption and prevent conflicts, where the terminal selects resources using partial sensing for specific periodicities and applies offsets to avoid continuous conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If partial sensing operation is performed for all periodicities, then resource selection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent segments the sensing operation by allowing the terminal to selectively perform partial sensing only for specific periodicities that are configured and relevant, rather than sensing all periodicities. This segmentation reduces the overall sensing burden and power consumption while maintaining adequate resource selection accuracy for the configured periodicities.
Solution Approach 2:
The patent applies partial action by performing sensing operations only for a subset of periodicities (those configured by the base station) rather than all possible periodicities. This partial sensing approach provides sufficient resource selection capability while avoiding the excessive power consumption of comprehensive sensing across all periodicities.
2Device complexity
If random selection operation is used, then device complexity is reduced, but transmission conflicts increase
Solution Approach 1:
The base station performs preliminary action by pre-configuring specific periodicities for the terminal to monitor. This preliminary configuration guides the terminal's resource selection process, reducing random conflicts by aligning sensing efforts with network-planned resource patterns, thereby improving reliability without requiring complex terminal-side conflict resolution mechanisms.
Solution Approach 2:
The system implements feedback through base station configuration of periodicities based on network conditions and terminal reports. This feedback mechanism allows the network to optimize resource allocation patterns, reducing transmission conflicts while keeping terminal complexity low, as terminals simply follow the configured periodicities rather than implementing complex conflict avoidance algorithms.
Data Source
AI summary
An operation method of a first terminal in a communication system may comprise: receiving, from a base station, configuration information including information of n periodicities; selecting one or more periodicities among the n periodicities; performing a partial sensing operation by using the one or more periodicities; and performing sidelink communication with a second terminal based on a result of the partial sensing operation, wherein n is a natural number equal to or greater than 2.