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A designated cell search method and terminal

A cell search and cell technology, applied in the field of communications, can solve problems such as UE disconnection search speed, and achieve the effects of improving accuracy and search speed, solving UE disconnection problems, and improving compatibility.

Inactive Publication Date: 2019-07-05
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the prior art, the present invention provides a designated cell search method to solve the problems of UE disconnection and slow search speed during the blind search process

Method used

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  • A designated cell search method and terminal
  • A designated cell search method and terminal
  • A designated cell search method and terminal

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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] figure 1 It shows a flow chart of a designated cell search method provided by an embodiment of the present invention, see figure 1 , the method includes:

[0050] Step 101: Perform cell ID detection according to the currently received signal.

[0051] Step 102: Judging whether the detected cell ID is the same as the pre-specified cell ID...

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Abstract

The invention provides an assigned cell searching method, comprising steps of S1, performing cell identifier ID detection according to a signal currently received, S2, determining whether the ID of the detected cell is identical to the ID of a cell which is assigned in advance, if yes, executing a step S3, using a signal which is received subsequently to perform frequency offset estimation and frequency offset compensation, S4, determining whether an estimation value of the frequency offset estimation is smaller than a preset frequency offset threshold, if yes, performing frequency offset convergence and executing a step S5, and S5 performing physical broadcast PBCH decoding, if decoding is correct, searching for the assigned cell is successful. The assigned cell searching method and terminal can improve accuracy of assigned cell searching, and can improve searching speed of the assigned cell because blind searching is eliminated.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a designated cell search method and a terminal. Background technique [0002] In a multi-channel wireless communication system, the entire discrete frequency band resource is divided into 40 subbands, including 3 synchronization subbands and 37 service subbands, which belong to 3 different clusters. The synchronization subband is mainly used for cell search, synchronization and broadcast reception, and the service subband is mainly used for uplink and downlink data transmission. Each cluster contains a synchronization subband and several service subbands (such as figure 1 shown). [0003] In a multi-channel wireless communication system, a designated cell search needs to be performed when a cell is rebuilt. The existing designated cell search process is as follows: (1) use the synchronization signal of the designated cell ID to perform symbol timing and frequency offset ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W48/16
Inventor 龚秋莎王丽
Owner POTEVIO INFORMATION TECH CO LTD
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