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Method and device for detecting secondary synchronization code of long term evolution (LTE) system

A secondary synchronization code and detection method technology, applied in electrical components, wireless communication, communication between multiple stations, etc., can solve the problem of low cell detection efficiency and achieve the effect of improving cell detection efficiency

Active Publication Date: 2013-04-10
LEADCORE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0032] The purpose of the present invention is to provide a secondary synchronization code detection method and device in the LTE system to solve the problem that only one cell group number with the highest power can be output for one detection in the prior art value, so the cell detection efficiency is not high

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  • Method and device for detecting secondary synchronization code of long term evolution (LTE) system
  • Method and device for detecting secondary synchronization code of long term evolution (LTE) system
  • Method and device for detecting secondary synchronization code of long term evolution (LTE) system

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Embodiment 1

[0054] Please refer to image 3 , which is a schematic flowchart of a method for detecting a secondary synchronization code in an LTE system according to Embodiment 1 of the present invention. like image 3 As shown, the LTE system secondary synchronization code detection method specifically includes the following steps:

[0055] Step 10: Receive the secondary synchronization signal in the time domain, convert it into a frequency domain signal and perform carrier rearrangement.

[0056] Step 20: Perform deinterleaving and descrambling processing on the result of step 10 to obtain a set of correlation sequences 0 and eight sets of correlation sequences 1.

[0057] Step 30: Perform circular correlation on the results of step 20 to obtain a set of correlation values ​​of correlation sequence 0 and eight groups of correlation values ​​of correlation sequence 1.

[0058] Wherein, step 10, step 20 and step 30 are prior art, and the present application will not repeat them here. ...

Embodiment 2

[0130] This embodiment provides a device for implementing the method for detecting the secondary synchronization code in the LTE system described in Embodiment 1. Please refer to Figure 4 , which is a schematic block diagram of an apparatus for detecting a secondary synchronization code in an LTE system according to Embodiment 2 of the present invention. like Figure 4 As shown, the detection device 40 includes:

[0131] The frequency domain conversion and carrier rearrangement module 410 is used to receive the secondary synchronization signal in the time domain, convert it into a frequency domain signal and perform carrier rearrangement;

[0132] The deinterleaving and descrambling module 420 is used to perform deinterleaving and descrambling processing on the output of the frequency domain transformation and carrier rearrangement module 410, so as to obtain a set of correlation sequences 0 and eight groups of correlation sequences 1;

[0133] The correlation module 430 i...

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Abstract

The invention provides a method and a device for detecting a secondary synchronization code of an LTE system. The method comprises the steps of receiving a secondary synchronization signal of a time domain, converting into a frequency domain signal, and rearranging carrier waves; conducting de-interleaving and descrambling processing for the result to obtain a group of correlation sequences 0 and eight groups of correlation sequences 1; conducting circular correlation for the results to obtain related values; selecting a plurality of related values from related values of the group of correlation sequences 0 and obtaining a plurality of 0 sequence index values corresponding to the plurality of related values, and selecting a plurality of related values from related values of the eight groups of correlation sequences 1 and obtaining a plurality of 1 sequence index values corresponding to the plurality of related values; forming a plurality of index pairs through the plurality of 0 sequence index values and the plurality of 1 sequence index values, judging the plurality of index pairs, and selecting a plurality of index pairs from the plurality of index pairs; and according to the selected plurality of index pairs, obtaining a plurality of cell group numbers, so that the cell detection efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and device for detecting a secondary synchronization code in an LTE system. Background technique [0002] In response to the rapid rise of the Worldwide Interoperability for Microwave Access (WiMAX) technology, 3GPP launched the Long Term Evolution (LTE) plan for the Universal Mobile Telecommunications System (UMTS) technology at the end of 2004. The purpose of this plan is to introduce the world's wireless air interface and various advanced technologies in order to achieve greater transmission rate, smaller access delay and greater system capacity. According to the current LTE standard, the system supports a maximum peak rate of 300Mbps for downlink and a maximum peak rate of 75Mbps for uplink. [0003] During the cell search process of the LTE system, it is necessary to detect a Secondary Synchronization Code (Secondary Synchronization Code, SSC) to achie...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04B7/26
Inventor 邓瑞楠郭华永王乃博
Owner LEADCORE TECH
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