The first and second steps series iterative method for cell searching in time-divided duplexing system

A technology of time division duplex system and cell search, applied in the direction of transmission system, communication between multiple stations, electrical components, etc.

Inactive Publication Date: 2010-09-29
XUANPU INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In particular, for a software / hardware structure capable of parallelizing the first step and the second step of the initial cell search, this can also be seen as a waste of resources, at the cost of the initial cell search in a poorer channel propagation environment. rapid increase in time

Method used

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  • The first and second steps series iterative method for cell searching in time-divided duplexing system
  • The first and second steps series iterative method for cell searching in time-divided duplexing system
  • The first and second steps series iterative method for cell searching in time-divided duplexing system

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Embodiment Construction

[0048] based on the following Figure 4 ~ Figure 6 , to illustrate the preferred embodiment of the present invention.

[0049] like Figure 4 As shown, it is a flow chart of applying the present invention to a parallel iterative method in the first and second steps of the initial cell search in the TD-SCDMA system.

[0050] First, in step 41, an iteration count counter is set to zero. An iteration number counter is maintained in the parallel iteration process to count the number of iterations that have been performed, so it needs to be cleared to zero when the iteration method starts.

[0051] Next, in step 42, a first step of initial cell search is performed to detect one or more SYNC-DL codewords and their synchronization positions. The first step of the initial cell search includes correlating the received signal with each candidate SYNC-DL codeword respectively, and after further processing and comparing the correlation results of each candidate SYNC-DL codeword, select...

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Abstract

A parallel iteration method for the 1st and the 2nd cell searching steps in time-division duplex (TDD) system features that in the low SINR condition, said parallel iteration for the 1st and the 2nd steps is processed by pipeline method and said parallel iteration can detect the frame synchronization and synchronizing code with high successful rate and short time.

Description

technical field [0001] The present invention relates to a method applied in a wireless communication system, in particular to a method for initial cell search (Initial Cell Search) of a user terminal equipment applied in a Time Division Duplex (Time Division Duplex) communication system. Background technique [0002] In 1946, Bell Laboratories in the United States proposed to divide the service area of ​​mobile phones into several cells, and set up a base station in each cell to form a new concept of cellular (Cellular) mobile communication in a cellular system. In 1978, this system was successfully tested in Chicago, USA, and it was officially put into commercial use in 1983. The adoption of the cellular system enables the same frequency to be used repeatedly, thereby greatly increasing the capacity of the mobile communication system and meeting the objective needs of the sudden increase of mobile communication users. The development of cellular mobile communication system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04B1/707H04B1/7083
Inventor 谢一宁冉晓龙
Owner XUANPU INDUSTRY CO LTD
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