Wireless Synchronization Signal Sequence Design for Ghost Effect Prevention
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Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services, large data traffic, increased connection devices, low latency, and energy efficiency, requiring advanced techniques such as small cell enhancement, dual connectivity, and non-orthogonal multiple access to meet these demands.
Innovation Solution
A method for transmitting and receiving synchronization signals in a wireless communication system by configuring and allocating sequences for primary and secondary synchronization signals with varying subcarrier spacings, using product sequences and cyclic prefix lengths to maintain high correlation performance and prevent ghost effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different subcarrier spacings are used for primary and secondary synchronization signals, then flexibility in supporting high-speed data services is improved, but sequence correlation performance deteriorates
Solution Approach 1:
The patent changes the parameter of subcarrier spacing to support high-speed data services while maintaining sequence correlation performance through specific sequence generation methods that adapt to the spacing changes
2Measurement precision
If product sequences are used for synchronization signals, then cross-correlation performance is improved, but device complexity increases
Solution Approach 1:
The synchronization signal sequence is segmented into multiple product sequences that are generated and processed separately, then combined to achieve high cross-correlation performance while managing complexity through modular generation
3Reliability
If cyclic prefix length is increased, then ghost effect prevention is improved, but transmission time increases
Solution Approach 1:
The patent optimizes the cyclic prefix length parameter to provide sufficient ghost effect prevention while minimizing transmission time overhead through careful parameter selection and sequence design
Data Source
AI summary
Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system and an apparatus therefor. Specifically, a method for performing synchronization signal by transmitting and receiving a synchronization signal includes: receiving, from a base station, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS); and performing synchronization by using the received PSS and the received SSS, in which a sequence for the SSS may be generated by a product between a first sequence and a second sequence and the number of first sequences may be configured to be larger than the number of second sequences.