Sidelink Resource Selection for PSFCH Conflict Avoidance
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Solution Overview
Problem
In sidelink communication, when two transmitting devices are in communication with the same receiving device, directional feedback transmission can lead to resource conflicts, resulting in dropped PSFCH transmissions and degraded system performance.
Innovation Solution
A method where a first transmitting device determines the resource information for feedback transmission to itself and transmits this information to a second transmitting device, allowing the second device to select a non-conflicting resource for its own feedback transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If directional transmissions are used for feedback from receiving device to transmitting devices, then feedback transmission reliability is improved, but resource conflicts occur when multiple transmitting devices share the same receiving device
Solution Approach 1:
The first transmitting device determines the first resource to be used by the receiving device for feedback transmission before the actual feedback occurs, and transmits this resource information to the second transmitting device in advance. This preliminary action allows the second transmitting device to select a non-conflicting resource, preventing resource conflicts before they occur while maintaining directional transmission reliability.
2Object-generated harmful factors
If resource information is shared between transmitting devices, then resource conflicts are reduced, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential resource information (first resource identification) needed for conflict avoidance and transmits it from the first transmitting device to the second transmitting device. This selective extraction minimizes signaling overhead while effectively preventing resource conflicts, as only the critical resource allocation data is shared rather than complete communication state information.
Data Source
AI summary
Embodiments of the present disclosure relate to resource selection for sidelink communication. According to one aspect of the present disclosure, a first transmitting device determines information of a first resource to be used by a receiving device for transmission of a first feedback to the first transmitting device, and transmits the information of the first resource to a second transmitting device. The second transmitting device determines a third resource reserved for a second data transmission from the second transmitting device to the receiving device such that a fourth resource associated with the third resource does not conflict with the first resource. In this way, resource selection for sidelink communication with sidelink beam management may be enhanced.