Sidelink Frame Structure PSCACH Positioning for Unlicensed Carrier Resource Sharing
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Solution Overview
Problem
Existing sidelink communication technologies face challenges in configuring frame structures for unlicensed carriers, leading to inefficient resource allocation and potential conflicts between devices.
Innovation Solution
The proposed solution involves configuring a frame structure for sidelink communication in unlicensed carriers, which includes a physical sidelink channel access channel (PSCACH) and a physical sidelink shared channel (PSSCH). The PSCACH is positioned at the starting position of the frame and is used to indicate share information of access channels for the PSSCH, allowing devices to determine whether to share resources for sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a frame structure is configured for sidelink communication in unlicensed carriers without considering particular circumstances, then the frame structure can be simplified and easier to implement, but resource allocation efficiency deteriorates and conflicts between devices increase
Solution Approach 1:
The patent applies local quality by making the PSCACH channel position flexible rather than fixed. The PSCACH can be located at different positions (starting position, middle position, or ending position) of the frame depending on the specific unlicensed carrier circumstances, allowing the system to adapt locally to different conditions while maintaining overall frame structure simplicity
Solution Approach 2:
The patent implements dynamics by enabling dynamic configuration of the PSCACH position within the frame structure. The position is not static but can be adjusted based on channel conditions, traffic requirements, and interference patterns in unlicensed carriers, thereby optimizing resource allocation efficiency without significantly increasing frame structure complexity
2Device complexity
If transmission protocols are configured to be shared among devices without considering unlicensed carrier circumstances, then protocol complexity is reduced and easier to deploy, but communication reliability deteriorates due to potential conflicts
Solution Approach 1:
The patent applies parameter changes by modifying the PSCACH position parameter (starting, middle, or ending position of the frame) to optimize communication reliability in unlicensed carriers. This parameter adjustment allows devices to adapt to different channel conditions and reduce conflicts without changing the overall protocol structure, maintaining ease of deployment while improving reliability
Data Source
AI summary
The present disclosure describes methods, apparatuses, and a storage medium for configuring a frame structure for sidelink communication between devices. The method includes configuring, by a first device, a frame for a sidelink communication in an unlicensed carrier, wherein: the frame comprises a physical sidelink channel assess channel (PSCACH) and a physical sidelink shared channel (PSSCH), the PSCACH locates at a starting position of the frame, and the PSCACH is configured to indicate share information of at least one access channel for the PSSCH; and sending, by the first device, the frame to a second device, wherein the second device is configured to determine, based on the share information indicated by the PSCACH, whether to share the at least one access channel for the sidelink communication.