Sidelink Communication with Multiple Starting Symbols for Lower Latency
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Solution Overview
Problem
Existing communication networks, particularly 5G and 6G, face challenges in optimizing sidelink communication performance, especially in terms of transmission timing and resource allocation in starting symbols, which can lead to transmission delays.
Innovation Solution
A method and apparatus for sidelink communication that involves configuring multiple starting symbols within a slot for transmission, with the first and second starting symbols being defined within a slot, and using these symbols for physical sidelink control and shared channel transmissions, with the second symbol occurring after the first and ensuring a minimum of 6 symbols for the second transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a single starting symbol is used for sidelink transmission, then the device complexity is low and configuration is simple, but transmission delays occur and resource allocation efficiency is reduced
Solution Approach 1:
The patent divides the time-frequency resource into multiple starting symbols (first starting symbol and second starting symbol) within a slot, allowing sidelink transmissions to begin at different time points. This segmentation of the transmission opportunity reduces transmission delay by enabling earlier or alternative start points, while the complexity is managed through standardized configuration patterns.
2Productivity
If multiple starting symbols are configured for sidelink transmission, then resource allocation efficiency is improved and transmission flexibility increases, but the device complexity and configuration overhead increase
Solution Approach 1:
The patent utilizes parameter changes by configuring different starting symbol positions (e.g., symbol 0, symbol 3, symbol 6 within a slot) and associated parameters such as cyclic shifts and orthogonal cover codes for each starting symbol. This allows flexible resource allocation across time and frequency domains, improving productivity while managing complexity through parameterized configurations.
3Reliability
If the second starting symbol is configured later in the slot, then the first starting symbol can be used for urgent transmissions, but the number of available symbols for the second transmission decreases
Solution Approach 1:
The patent implements dynamic resource allocation where the first starting symbol is used for urgent or high-priority transmissions, and the second starting symbol (configured later in the slot) provides a fallback or alternative transmission opportunity. The system dynamically selects which starting symbol to use based on transmission requirements, ensuring reliability while optimizing the use of available time resources.
Data Source
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AI summary
A method and a device for sidelink (SL) communication are disclosed. A method of a first user equipment (UE) comprises the steps of: receiving information on a first starting symbol from a base station; receiving information on a second starting symbol from the base station; and performing SL transmission from at least one starting symbol among the first starting symbol or the second starting symbol.