Synchronization Signal Position Indication for 5G UE Detection
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Solution Overview
Problem
In future wireless communication systems, such as 5G or new radio (NR), the high frequency bands face severe transmission loss, and existing methods are inadequate for effectively indicating the positions of synchronization signals and physical broadcast channels (PBCHs) within a signal transmission period, leading to insufficient SSS sequences and increased complexity for UE detection.
Innovation Solution
The method involves using at least two parts of information to indicate the position of synchronization signals in a transmission period, allowing the UE to determine frame timing, by characterizing the position of PBCH blocks through a combination of signal sequences, DMRS, and PBCH information, such as SSS sequences, DMRS sequences, and PBCH payloads, to efficiently decode synchronization signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of synchronization signals transmitted in a single transmission period is increased to cover all UEs in the cell using multiple beams, then the coverage and reliability of synchronization signal transmission is improved, but the search time and detection complexity for the UE side is increased
Solution Approach 1:
The patent segments the indication of synchronization signal positions into two parts: higher bits indicating the position of the synchronization signal block in the SS burst set, and lower bits indicating the position within the block. This segmentation allows the UE to efficiently decode position information without increasing overall search time, while supporting multiple beams for improved coverage.
2Adaptability or versatility
If existing indication methods are used for synchronization signal positions, then the system maintains backward compatibility with LTE, but the indication capability is insufficient for high-frequency bands and multiple beam scenarios
Solution Approach 1:
The patent introduces a new dimension for position indication by using separate higher bits and lower bits to indicate different levels of position information. This dimensional approach provides sufficient indication capability for multiple beams in high-frequency bands while maintaining the existing SSS sequence structure for backward compatibility.
Data Source
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AI summary
An information indication method and apparatus, information detection method and apparatus and communication system. The information indication apparatus includes: a first transmitting unit configured to transmit first indication information to UE indicating a position of a synchronization signal block (SS block) in a signal transmission period (an SS burst set); wherein, the first indication information includes at least two parts of information. Hence, the position of the synchronization signal in the signal transmission period by at least two parts information, so that frame timing at the UE side is supported, and currently existed problems are solved.