Blind Numerology Band Detection in 5G Mixed-Numerology Receivers
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Solution Overview
Problem
Existing 5G communication systems using mixed numerology structures face challenges in determining the types of numerology and their band locations in the frequency space without relying on control information, leading to increased complexity and reduced spectral efficiency.
Innovation Solution
A method involving CP correlation in the time space followed by N-dimensional FFT and IFFT processes is used to detect numerology types and band locations without control information, employing protection bands to prevent interference and using CP correlation to determine numerology types in each band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If CP correlation is used to detect numerology types, then blind detection of numerology is achieved, but the band location in frequency space cannot be determined
Solution Approach 1:
The frequency spectrum is divided into multiple bands, and CP correlation is performed separately on each band. This segmentation allows the system to determine both numerology type and band location, as each band can be independently analyzed for CP characteristics while maintaining frequency domain information.
Solution Approach 2:
The invention transitions from single-dimension CP correlation to a multi-dimensional approach by combining frequency domain band identification with time domain CP correlation. This allows simultaneous determination of numerology type and band location by analyzing signal characteristics across both frequency and time dimensions.
2Adaptability or versatility
If mixed numerology structures are used to serve diverse requirements, then service quality for new users is improved, but control information complexity increases
Solution Approach 1:
The receiver performs blind detection of numerology types and band locations using CP correlation without requiring additional control information from the transmitter. This self-service capability allows the system to automatically identify signal characteristics and reduces the need for complex control information while maintaining support for mixed numerology structures.
3Measurement precision
If control information is sent to indicate numerology types and bands, then receiver analysis accuracy is improved, but spectral efficiency is reduced
Solution Approach 1:
The receiver uses blind detection through CP correlation to automatically identify numerology types and band locations without requiring transmitted control information. This eliminates the need for additional control bits while maintaining accurate signal analysis, thereby improving spectral efficiency without sacrificing measurement precision.
Data Source
AI summary
Disclosed is a method for detecting the numerology types and bands in the received signal without using any control information in the systems using mixed numerology (e.g. 5G standard) and to a signal receiving unit operating according to the method.