PBCH Soft Merging in Synchronization Signal Burst Sets
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Solution Overview
Problem
User equipment often fails to decode physical broadcast channels (PBCHs) due to poor signal quality, especially when located between beam directions, and existing beam directed broadcasting methods do not effectively combine synchronization signal blocks for improved decoding.
Innovation Solution
A method and device that identify and soft-combine physical broadcast channels from multiple synchronization signal blocks within a burst set, improving decoding success rates by averaging bit soft information across blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam directed broadcasting is used for synchronization signal blocks, then the signal quality in specific directions is improved, but user equipment located between beam directions experiences poor signal quality and fails to decode PBCH correctly
Solution Approach 1:
The patent combines multiple synchronization signal blocks from different beam directions into a single burst set. User equipment can perform soft combining on PBCH data from multiple SS blocks within the same burst set, merging signals from different directions to achieve reliable decoding even when located between beam directions.
Solution Approach 2:
The patent divides the omnidirectional broadcast into multiple directed beams by segmenting the synchronization signal burst set into multiple SS blocks, each transmitted in a specific beam direction. This segmentation allows targeted signal enhancement while the combined burst set provides comprehensive coverage.
2Reliability
If user equipment waits for multiple synchronization signal blocks to perform soft combining, then the decoding success rate improves, but the time delay increases
Solution Approach 1:
The patent transmits multiple synchronization signal blocks within a single synchronization signal burst set in advance, so that user equipment can perform soft combining without waiting for multiple separate periods. The preliminary arrangement of multiple SS blocks in one burst set reduces the time delay for achieving reliable decoding.
3Productivity
If user equipment attempts to decode PBCH from a single synchronization signal block, then the processing speed is fast, but the decoding success rate is low under poor signal conditions
Solution Approach 1:
The patent enables user equipment to combine PBCH data from multiple SS blocks within the same burst set through soft combining. This merging of multiple signals improves the decoding success rate under poor signal conditions while maintaining efficient processing since all blocks are available within a single burst set.
Data Source
AI summary
The present invention relates to a physical broadcast channel processing method and apparatus. The method comprises: according to a preset synchronization signal position, performing synchronization signal identification among obtained subframes; after performing the synchronization signal identification, determining a first synchronization signal block; within a synchronization signal burst set to which the first synchronization signal block belongs, performing synchronization signal identification once again, and determining a second synchronization signal block, performing soft merging on physical broadcast channels (PBCHs) in the first synchronization signal block and the second synchronization signal block. The prevent invention implements PBCH soft merging within a synchronization signal burst set, which helps to increase a PBCH decoding success rate.