S-SS/PSBCH Block Frequency Location Configuration for Sidelink
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Solution Overview
Problem
Existing wireless communication systems face challenges in supporting sidelink communication, particularly in ensuring the stability of synchronization procedures due to channel access failures in unlicensed spectra.
Innovation Solution
The method involves configuring multiple frequency locations for the S-SS/PSBCH block within a unique RB set in an SL BWP, allowing the block to be transmitted even if channel access failures occur, thereby enhancing synchronization stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If channel access mechanism is used in unlicensed spectrum for sidelink communication, then spectrum sharing capability is improved, but synchronization stability deteriorates due to channel access failures
Solution Approach 1:
The synchronization signal block transmission is segmented across multiple frequency locations within the SL BWP. Each frequency location corresponds to a center frequency of a subcarrier in an S-SS/PSBCH block, with the block bandwidth confined to a unique RB set. This segmentation allows the system to attempt transmission at multiple frequency positions, increasing the probability of successful synchronization signal delivery despite channel access failures in unlicensed spectrum.
2Device complexity
If single frequency location is used for S-SS/PSBCH block transmission, then device complexity is reduced, but transmission reliability deteriorates when channel access failures occur
Solution Approach 1:
The invention transitions from a single frequency location approach to multiple frequency locations within the frequency dimension of the SL BWP. By configuring multiple frequency locations for S-SS/PSBCH block transmission, the system exploits the frequency domain to provide redundancy, ensuring that if channel access fails at one location, attempts can be made at other locations, thereby improving transmission reliability without significantly increasing device complexity.
Data Source
Figure 1~2
AI summary
Provided in the present invention are a method performed by user equipment, and user equipment. The method performed by user equipment includes: determining one or more frequency locations within one SL BWP for S-SS/PSBCH block reception, wherein each frequency location corresponds to a center frequency of one subcarrier in one S-SS/PSBCH block, and a bandwidth of the S-SS/PSBCH block is within a bandwidth of a unique RB set within the SL BWP; and receiving the S-SS/PSBCH block in part or all of the one or more frequency locations.