Sidelink SCI-Only Grant Multiplexing for Resource Efficiency
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Solution Overview
Problem
Current sidelink communication technologies face inefficiencies due to repetitive processing overhead and wasted resources, particularly in industrial IoT environments where low latency and high reliability are critical, leading to suboptimal performance in scheduling and resource allocation.
Innovation Solution
The proposed solution involves decoupling sidelink control information (SCI) and data-only traffic in the same slot, using a time indicator to separate the starting resource of future data traffic, and incorporating a traffic direction indicator to facilitate multiplexing SCI-only grants with data-only traffic, thereby reducing processing overhead and resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SCI and data-only traffic are transmitted together in the same slot, then resource utilization is improved, but processing overhead increases due to repetitive handling
Solution Approach 1:
The patent segments the transmission by separating SCI-only grants from data-only SPS traffic into distinct transmission types. SCI-only grants contain only scheduling information without accompanying data, while data-only transmissions carry data without repeating SCI. This segmentation allows receivers to process only the necessary information type, reducing repetitive processing overhead while maintaining efficient resource utilization through multiplexing.
2Adaptability or versatility
If SCI-only grants are transmitted without data, then scheduling flexibility is improved, but resource wastage occurs due to unused data resources
Solution Approach 1:
The patent implements a universal transmission framework where the same physical resources can serve multiple functions. SCI-only grants provide scheduling flexibility for future transmissions, while data-only SPS traffic utilizes the same resource structure for actual data transmission. The time offset indicator mechanism allows the system to dynamically switch between grant-only and data-only modes, ensuring resources are fully utilized without wastage while maintaining scheduling adaptability.
3Device complexity
If data-only SPS traffic is transmitted without SCI, then processing complexity is reduced, but scheduling control is weakened
Solution Approach 1:
The patent applies preliminary action by providing SCI-only grants in advance that contain all necessary scheduling information for future data transmissions. The time offset indicator预先 specifies when data transmissions will occur, allowing receivers to prepare processing in advance. This preliminary scheduling reduces the complexity of real-time processing for data-only traffic while maintaining strong scheduling control through the pre-configured SCI information.
Data Source
AI summary
Apparatus, methods, and computer-readable media for facilitating multiplexing SCI-only grant and data-only SPS traffic on sidelink are disclosed herein. An example method for wireless communication at a first UE includes transmitting a sidelink transmission to a second UE at a first resource, the sidelink transmission including data-only traffic and scheduling information corresponding to future data traffic. The example method also includes transmitting a time offset indicator indicating a starting resource of the future data traffic.