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Method and device for normalized power processing and cell search

A cell search and normalization technology, which is applied in the field of cell search, can solve the problem of not further using the characteristic window characteristics of the frame structure, and achieve the effect of the maximum correlation peak being obvious and increasing the correctness

Active Publication Date: 2012-11-14
LEADCORE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0028] It can be seen from the above description that the direct correlation method for power normalization only uses the correlation characteristics of the SYNC_DL signal itself, but does not further use the characteristic window characteristics of the frame structure

Method used

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  • Method and device for normalized power processing and cell search
  • Method and device for normalized power processing and cell search
  • Method and device for normalized power processing and cell search

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Embodiment Construction

[0059] The basic idea of ​​the present invention is: assume that the initial chip that participates in correlation operation is the initial chip of SYNC_DL, thus determine a subframe, from the 32 chips of GP in DwPTS in this subframe, 96 chips in GP Chips, the 32 chips used as GP in UpPTS, and the last 16 chips of each ordinary time slot, the power of any chip in a total of 272 chips is added to the calculation of the power sum, as power normalization The denominator in the processing.

[0060] Hereinafter, the implementation of the cell search method and device of the present invention will be described in detail through specific embodiments in conjunction with the accompanying drawings.

[0061] image 3 It is a schematic flow chart of the cell search method of the present invention, such as image 3 As shown, the method includes:

[0062] Steps 301-302: with figure 2 The processing flow of steps 201-202 shown is the same.

[0063] Step 303: Perform power normalization...

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Abstract

The invention provides a cell search method which comprises the following steps: when normalized power processing is carried out to first correlation values, the power sum of 65 to 336 code chips including 64 code chips which participate in the correlation operation is first counted; and then, the normalized power processing is carried out to the corresponding first correlation values according to the power sum to obtain a maximum correlation value. The invention also provides a method and a device for the normalized power processing and a device for realizing the cell search. The method and the devices can cause the maximum correlation peak value corresponding to SYNC_DL to be more obvious and improve the correctness in checking downlink pilot signals.

Description

technical field [0001] The present invention relates to cell search technology, in particular to a method and device for power normalization processing and cell search. Background technique [0002] In a mobile communication system, after the terminal (UE, User Equipment) is turned on, it first conducts a cell search. The purpose of the cell search is to select a suitable operating frequency point, and obtain downlink synchronization between the terminal and the base station at this frequency point, so that the terminal can Quickly access the communication system, receive the information of the cell, and realize the communication through the call. [0003] Downlink synchronization is an important step in the cell search process, and it is required to use a downlink synchronization detection algorithm to quickly and accurately determine the timing position of the downlink pilot signal. Hereinafter, a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7083
Inventor 王玉
Owner LEADCORE TECH