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Secondary synchronization channel detection method and device

A secondary synchronization channel and detection method technology, applied in the field of secondary synchronization channel detection methods and devices, can solve problems such as poor system reliability and stability, SSS signal interference, etc., and achieve the effect of increasing maintainability

Active Publication Date: 2012-02-01
SANECHIPS TECH CO LTD
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Problems solved by technology

[0006] The main purpose of the present invention is to provide a secondary synchronization channel detection method and device to at least solve the problems that the above-mentioned channel environment will interfere with the SSS signal, the accuracy of the response signal, and the poor reliability and stability of the system

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  • Secondary synchronization channel detection method and device
  • Secondary synchronization channel detection method and device

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Embodiment 1

[0067] Convention, the following keyword conventions are used in the embodiment of the present invention:

[0068] PSS: Primary Sync Signal SSS: Secondary Sync Signal

[0069] SSS1: The equalization value of the secondary synchronization signal to be detected (the first half frame)

[0070] SSS2: The equalization value of the secondary synchronization signal to be detected (the second half frame)

[0071] SSCH1: Secondary synchronization local candidate sequence (first half frame) generated in real time

[0072] SSCH2: Secondary synchronization local candidate sequence generated in real time (second half frame)

[0073] In this embodiment, a secondary synchronization channel detection device is provided, and its structural diagram is as follows Figure 6 Shown: time domain data cache unit 2001, secondary synchronization signal FFT calculation unit 2002, channel estimation unit 2003, primary synchronization sequence unit 2004, coherent detection unit 2005, multi-frame accumu...

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Abstract

The invention provides a secondary synchronization channel detection method and a secondary synchronization channel detection device. The method comprises the following steps of: acquiring secondary synchronization signals (SSS) and channel estimation values in two cyclic prefix (CP) modes, wherein the two CP modes comprises an extended cyclic prefix (ECP) mode and a negative cyclic prefix (NCP) mode; performing coherent detection by utilizing the channel estimation values and the SSSs to obtain channel estimation equilibrium values of the SSSs in the two CP modes; and obtaining secondary synchronization signals to be detected according to the channel estimation equilibrium values and a local candidate sequence, and detecting the secondary synchronization signals to be detected. By the method and the device, the problems of interference in the SSS in a channel environment, low response signal accuracy and low system reliability and stability in related technologies can be solved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a secondary synchronization channel detection method and device. Background technique [0002] In a mobile communication system, after initial power-on, a UE (User Equipment, user equipment) needs to search for possible cells and select a suitable cell to camp on. The process from power-on search to logging into a suitable cell is called a synchronization process, in which frame synchronization is obtained by primary synchronization detection, and half-frame synchronization is obtained by secondary synchronization detection. Such as figure 1 As shown, in the TDD (Time Division Duplex, Time Division Duplex) frame structure, a 10ms wireless frame is composed of two half-frames with a length of 5ms, and each half-frame is composed of five subframes with a length of 1ms. 4 normal subframes and 1 special subframe. A common subframe consists of two 0.5ms time slots, and a special s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W56/00H04L25/02
CPCH04W24/00H04L25/02H04W56/00
Inventor 卢海涛姜奇渊薛春雨
Owner SANECHIPS TECH CO LTD
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