Band-Dependent Synchronization Signal Configuration for 5G Interference Reduction
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in optimizing synchronization signal transmission configurations across different frequency bands, leading to interference and reduced orthogonality between neighboring cells, especially in dense deployments and higher frequency bands like mmWave.
Innovation Solution
The proposed solution involves determining a band-dependent transmission configuration for synchronization signals, allowing for flexible antenna port and power settings, and potentially different configurations for primary and secondary synchronization signals, which enables efficient beamforming and reduces interference by optimizing transmission parameters based on the frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a unified transmission configuration is used for synchronization signals across all frequency bands, then device complexity is reduced, but interference and reduced orthogonality occur between neighboring cells in dense deployments and higher frequency bands
Solution Approach 1:
The patent applies local quality by determining different transmission configurations for synchronization signals based on the specific frequency band. Each frequency band (e.g., first frequency band with different parameters than second frequency band) receives band-specific optimization for antenna ports, power settings, and beamforming parameters, thereby reducing interference in dense deployments while maintaining manageable complexity through standardized band-based classification
2Reliability
If transmission parameters are optimized for each frequency band, then orthogonality and communication efficiency improve, but device complexity increases due to multiple configuration sets
Solution Approach 1:
The patent implements parameter changes by establishing different transmission configurations for synchronization signals according to frequency band. Specific parameters including antenna port assignments, transmission power levels, and beamforming characteristics are adjusted for each frequency band to optimize detection reliability while maintaining a structured, manageable configuration framework
3Ease of operation
If standard synchronization signal transmission is used, then ease of operation is maintained, but beamforming efficiency and interference reduction are insufficient in higher frequency bands
Solution Approach 1:
The patent applies dynamics by enabling adaptive transmission configurations that vary based on frequency band characteristics. The system dynamically selects appropriate antenna ports, power settings, and beamforming parameters for each frequency band, thereby optimizing communication efficiency in higher frequency bands while maintaining operational simplicity through automated band-dependent configuration
Data Source
AI summary
Certain aspects of the present disclosure provide mechanisms for band-dependent configuration of synchronization signal transmission, as well band-dependent synchronization signal designs. The band-dependent configuration and design may help optimize certain transmission parameters (such as antenna ports and transmission power) to current operating bands.