Sidelink Synchronization Block Repetition in Unlicensed Spectrum
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing synchronization signals in unlicensed bands, particularly in 6G systems, which require high data rates, low latency, and large numbers of connected devices, necessitating improved methods for transmitting and receiving synchronization signals.
Innovation Solution
The method involves obtaining information about the number and gap of repeated sidelink-synchronization signal/physical sidelink broadcast channel (S-SS/PSBCH) blocks in a frequency domain within a resource block set and transmitting these blocks based on configured number and gap information, utilizing a first device with transceivers, processors, and memory to manage synchronization signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synchronization signals are transmitted in unlicensed bands using conventional methods, then basic connectivity is maintained, but data rate and latency performance deteriorate for 6G requirements
Solution Approach 1:
The synchronization signal transmission is segmented into multiple repeated S-SS/PSBCH blocks distributed across frequency domain resource blocks. Each block carries synchronization information, and the segmentation allows parallel transmission across multiple frequency resources, increasing overall data rate while maintaining synchronization reliability through distributed redundancy
Solution Approach 2:
The patent introduces frequency domain repetition and spacing as an additional dimension for synchronization signal transmission. By configuring multiple repeated blocks with specific frequency spacing within resource block sets, the system achieves both high data rate through parallel frequency usage and reliable synchronization through multi-point presence in the frequency domain
2Reliability
If the number of repeated S-SS/PSBCH blocks is increased to improve synchronization reliability, then connectivity is enhanced, but frequency resource consumption increases
Solution Approach 1:
The system dynamically configures the number of repeated S-SS/PSBCH blocks and their frequency spacing based on deployment scenarios and service requirements. This dynamic configuration allows the network to adapt synchronization resource allocation to actual needs, achieving reliable synchronization only when necessary while conserving frequency resources in other scenarios
Solution Approach 2:
The patent employs parameter changes by configuring different numbers of repeated blocks and different frequency spacing values according to specific service requirements. This allows flexible trade-off between synchronization reliability and resource consumption by adjusting parameters rather than using fixed configurations
3Loss of time
If synchronization signals are transmitted with frequent repetitions to reduce latency, then connection establishment speed improves, but system complexity increases
Solution Approach 1:
The system performs preliminary configuration of synchronization signal transmission parameters including the number of repeated blocks and frequency spacing before actual transmission. This preliminary setup enables rapid synchronization signal deployment without real-time complex calculations, reducing latency while keeping transmission management simple through pre-determined configurations
Data Source
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AI summary
Provided are a method for performing wireless communication by a first device and an apparatus supporting same. The first device may obtain information related to a first resource block (RB) set; obtain first number information related to a number of repeated sidelink-synchronization signal/physical sidelink broadcast channel (S-SS/PSBCH) blocks in a frequency domain within the first RB set; obtain first gap information related to a gap between the repeated S-SS/PSBCH blocks in the frequency domain within the first RB set; and transmit at least one S-SS/PSBCH block within the first RB set, based on the first number information related to the number of repeated S-SS/PSBCH blocks and the first gap information related to the gap between the repeated S-SS/PSBCH blocks.