Sidelink Resource Selection Using Partial Sensing and Offsets
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Solution Overview
Problem
The power consumption of terminals in sidelink communication systems increases due to partial sensing operations, and continuous resource conflicts occur when random selection is used, leading to performance deterioration.
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 performing sensing for all possible periodicities. This segmentation reduces the overall sensing workload and power consumption while maintaining 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 that are explicitly configured by the base station, rather than performing complete sensing for all periodicities. This partial sensing approach reduces power consumption while still providing sufficient resource selection accuracy for the configured periodicities.
2Use of energy by moving object
If random selection operation is used, then power consumption is reduced, but continuous transmission conflicts occur leading to performance deterioration
Solution Approach 1:
The base station performs preliminary action by pre-configuring specific periodicities for the terminal to perform partial sensing. This preliminary configuration enables the terminal to make informed resource selections based on sensed information for the configured periodicities, thereby avoiding continuous conflicts that would occur with pure random selection, while still maintaining reduced power consumption compared to sensing all periodicities.
3Adaptability or versatility
If multiple periodicities are configured for resource pools, then resource utilization flexibility is improved, but device complexity increases
Solution Approach 1:
The patent segments the resource pool configuration by associating specific periodicities with specific resource pools. The terminal only needs to perform partial sensing for the periodicities configured for its assigned resource pools, rather than processing all possible periodicities. This segmentation reduces terminal processing complexity while maintaining the flexibility benefits of multiple periodicity configurations.
Solution Approach 2:
The patent applies local quality by configuring different periodicities for different resource pools based on local requirements. Each resource pool has its own configured periodicities that are relevant to its specific usage scenario, allowing the terminal to optimize sensing operations for each resource pool locally rather than uniformly processing all periodicities across all resource pools.
Data Source
AI summary
An operation method of a first terminal in a communication system may include: 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.