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Cell ID detection method and system of 5G NR system

A 5GNR and detection method technology, applied in the field of cell ID detection in 5GNR standard, can solve the problems of high resource consumption, low computational complexity, and high algorithm complexity, and achieve the effect of simplifying the computational complexity

Active Publication Date: 2021-05-28
COMBA TELECOM SYST CHINA LTD
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Problems solved by technology

The autocorrelation algorithm has advantages in combating multipath and computational load, and the cross-correlation algorithm has advantages in combating noise and computing time. Therefore, this algorithm has high precision and strong reliability, but the computational complexity is large.
[0006] At present, the related technologies of cell ID detection in 5G NR system are all aimed at the calculation of autocorrelation or cross-correlation using local storage sequences and received signals. The problem of high cost or the need for specific chip design, so in the 5G NR system, how to quickly realize cell ID detection and demarcation through a specific method, and has the characteristics of low computational complexity and low implementation cost, can maximize the Accurate cell ID detection and demarcation is an urgent problem to be solved at present

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  • Cell ID detection method and system of 5G NR system
  • Cell ID detection method and system of 5G NR system

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Embodiment Construction

[0044] The accompanying drawings of the present invention are only for illustrative purposes, and should not be construed as limiting the present invention. The method and system for quickly detecting the cell ID of the present invention can quickly detect the cell ID, which is the prerequisite for realizing 5G signal synchronization, and the prerequisite for the mobile terminal to obtain the time and frequency of the wireless network and access the network. Cell ID detection and demarcation is the first step in establishing a connection between a user and a base station in mobile communications. The cell ID detection and the accuracy of time-frequency synchronization directly affect subsequent communication performance. Wherein, in the process of detecting the cell ID, the signal is not cut off, and at the same time, the signal can continue to be covered after passing through the system.

[0045] In a specific embodiment of the present invention, the present invention relates...

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Abstract

The invention relates to a cell ID detection method and system of a 5G NR system, and the method comprises the steps: receiving a baseband digital signal in real time; performing digital sampling and digital down-conversion processing on the baseband digital signal; obtaining a local cell ID sequence, and converting the local cell ID sequence into a local cell ID sequence group; performing digital shift operation on the baseband digital signal after digital sampling and digital down-conversion processing and the local cell ID sequence group to obtain a correlation peak value; obtaining the maximum peak value in the correlation peak values, and determining the cell ID according to the maximum peak value. According to the method and the device, the corresponding cell ID can be rapidly detected, and the technical effects of low calculation complexity and high detection speed are achieved.

Description

technical field [0001] The present invention relates to the technical field of computer communication, and more specifically, to a cell ID detection method and system of 5G NR standard. Background technique [0002] 5GNR is a global 5G standard based on a new air interface design based on OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing), and is also a very important foundation for the next generation of cellular mobile technology. 5G technology will achieve ultra-low latency and high reliability sex. So far, the most widely used scenario of 5G NR is to use TDD (Time Division Duplex, Time Division Duplex) mode, but for TDD mode signals, frame structure synchronization must be performed, and the first step in frame synchronization requires cell ID (Identification, identification) detection and PBCH (Physical Broadcast Channel, broadcast physical channel, which is the downlink transmission channel from the base station to the mobile...

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/2614H04L27/2695
Inventor 张文吕辉
Owner COMBA TELECOM SYST CHINA LTD