Sidelink Resource Pool Sensing Without SCI Decoding Collisions
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Solution Overview
Problem
Sensing UEs in sidelink communication systems, lacking channel encoding/decoding modules, cannot parse SCI from communication UEs, leading to higher resource collision probabilities due to inability to avoid resources reserved by communication UEs.
Innovation Solution
A sensing device measures signals in specific time and frequency units, determining resource availability before transmission to avoid collisions, using non-overlapping resource pools and threshold-based measurements to optimize transmission timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sensing UEs use simple radar sensing modules without channel encoding/decoding modules, then device complexity and cost are reduced, but the ability to parse SCI and avoid resource collisions deteriorates
Solution Approach 1:
The patent introduces a dedicated sensing resource pool as an intermediary mechanism that operates independently from the communication resource pool. This sensing resource pool includes sensing reference signals and sensing data resources that are specifically designed for sensing UEs to detect channel occupancy and identify available resources without needing to parse SCI messages from communication UEs
Solution Approach 2:
The patent segments the sidelink resources into separate communication resource pools and sensing resource pools. This segmentation allows sensing UEs to operate independently using only sensing resources, eliminating the need for complex communication processing modules while maintaining reliable resource selection through dedicated sensing mechanisms
2Device complexity
If sensing UEs cannot parse SCI from communication UEs, then device complexity is reduced, but resource collision probability increases
Solution Approach 1:
The patent implements preliminary sensing actions where sensing UEs measure sensing reference signals and assess channel occupancy in advance before selecting resources for transmission. This preliminary measurement allows sensing UEs to identify available resources without needing to decode SCI messages, maintaining simplicity while avoiding collisions
Solution Approach 2:
The sensing reference signal acts as an intermediary that carries resource availability information without requiring complex parsing. Communication UEs transmit these signals, and sensing UEs measure them to determine channel occupancy, creating a simple yet effective information exchange mechanism
Data Source
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AI summary
This application relates to a communication method and an apparatus. A sensing device receives a first signal in at least one last time subunit in a first time unit and a first frequency domain unit set, and measures the first signal. The sensing device sends a first sensing signal in a second time unit and a second frequency domain unit set when a measurement result of the first signal meets a first condition, where the second time unit is a next time unit of the first time unit. For example, if the second time unit is not occupied by another device, the sensing device may send SL signals in the second time unit; or if the second time unit is occupied by another device, the sensing device may not send SL signals in the second time unit. In this manner, a probability of resource collision can be reduced, and SL signal transmission quality can be improved.