5G Synchronization Signal Block Segmentation for Reduced Search Latency
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Solution Overview
Problem
In 5G new radio access systems, the existing synchronization signal transmission method involves sending NR-PSS, NR-SSS, and NR-PBCH signals in an adjacent symbol manner, leading to frequent switching of processing types and prolonged signal searching times, which affects system performance due to differing coverage capabilities and reliability.
Innovation Solution
The method involves generating synchronization signal blocks with NR-PSS, NR-SSS, and NR-PBCH signals sent on non-adjacent symbols, allowing for separate processing and reduced searching time by separating these signals into different slots or using alternate and consecutive patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If NR-PSS, NR-SSS, and NR-PBCH are sent on adjacent symbols in TDM manner, then all signals can be transmitted within one SS block, but processing types need to be switched frequently and signal searching time increases
Solution Approach 1:
The patent segments the synchronization signals by separating PBCH from PSS/SSS into different SS blocks. PBCH is transmitted in one SS block while PSS and SSS are transmitted in another SS block, allowing independent processing and searching of each signal type, thereby reducing the overall searching time while maintaining efficient transmission.
2Reliability
If different processing (beamforming or power boosting) is applied to NR-PSS, NR-SSS, and NR-PBCH, then coverage and reliability are improved, but frequent switching between processing types is required when signals are on adjacent symbols
Solution Approach 1:
By separating PBCH from PSS/SSS into different SS blocks, the patent enables independent application of different processing techniques (beamforming, power boosting) to each signal type without requiring frequent switching. Each signal can be processed optimally according to its specific requirements, improving reliability while reducing processing complexity.
3Productivity
If NR-PSS, NR-SSS, and NR-PBCH are transmitted together in one SS block on adjacent symbols, then the SS block structure is compact, but the system performance is affected due to prolonged searching time and frequent processing switching
Solution Approach 1:
The patent divides the synchronization signal transmission into separate SS blocks: one block for PBCH and another block for PSS and SSS. This segmentation allows the receiver to search for and process each signal type independently, reducing searching time and simplifying processing operations, thereby improving overall system performance.
Data Source
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AI summary
This application provides a signal transmission method and apparatus. The method includes: generating a plurality of synchronization signal blocks, where each of the plurality of synchronization signal blocks includes a first synchronization signal, a second synchronization signal, and a broadcast signal; and sending signals in the plurality of synchronization signal blocks, where at least one type of signal in each synchronization signal block and another type of signal in the same synchronization signal block are sent on non-adjacent symbols. Technical solutions in embodiments of this application can improve system performance.