Time Division Multiplexing Synchronization Signals Numerology
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in optimizing synchronization signal and data signal numerologies, leading to inefficiencies in multiplexing and transmission, which affect performance and reliability, especially in millimeter wave communications.
Innovation Solution
Implementing a method where a base station sets different numerologies for synchronization signals and data signals, with synchronization signals transmitted using time-division multiplexing to improve peak-to-average power ratio and avoid frequency-division multiplexing with data signals, allowing for more efficient beamforming and transmission in various directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synchronization signals and data signals are frequency-division multiplexed, then resource utilization is improved, but peak-to-average power ratio performance deteriorates
Solution Approach 1:
The patent segments the multiplexing approach by separating synchronization signals and data signals into different time slots rather than frequency resources. This segmentation allows each signal type to be transmitted with optimized parameters, resolving the contradiction between resource utilization and PAPR performance.
Solution Approach 2:
The patent transitions from frequency-domain multiplexing to time-domain multiplexing, changing the dimension of resource allocation. This dimensional shift enables better PAPR control for synchronization signals while maintaining efficient resource utilization through time-division strategies.
2Device complexity
If uniform numerology is used for all signals, then system complexity is reduced, but transmission efficiency deteriorates
Solution Approach 1:
The patent applies different numerology configurations to different signal types and transmission scenarios. Synchronization signals use one numerology optimized for their specific requirements, while data signals use another numerology optimized for their characteristics, achieving local optimization without overwhelming system complexity.
Solution Approach 2:
The patent introduces dynamic numerology selection where the numerology parameters can be adjusted based on signal type, channel conditions, and transmission requirements. This dynamic approach allows the system to adapt to varying conditions and optimize transmission efficiency while managing complexity through standardized selection criteria.
3Reliability
If time-division multiplexing is used for synchronization signals, then peak-to-average power ratio is improved, but resource utilization deteriorates
Solution Approach 1:
The patent ensures continuous and periodic transmission of synchronization signals at optimized time intervals. This continuous action maintains reliable PAPR performance while the systematic scheduling of time slots ensures that resource utilization remains efficient through minimized idle time and optimized slot allocation.
Solution Approach 2:
The patent implements periodic transmission of synchronization signals with optimized periodicity. By transmitting synchronization signals at regular, optimized intervals rather than continuously or randomly, the system maintains reliable PAPR performance while improving resource utilization through reduced transmission overhead and better resource scheduling.
Data Source
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Figure 2A~2D
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AI summary
The apparatus may be a base station. The apparatus sets a first numerology for at least one synchronization signal of one or more synchronization signals to be different from a second numerology for at least one data signal of one or more data signals. The apparatus transmits the one or more synchronization signals to a user equipment (UE) based on the first numerology. The apparatus transmits the one or more data signals to the UE based on the second numerology.