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Method and device for searching cell in homogeneous-frequency neighboring cells

A technology of cell search and same-frequency adjacent cells, which is applied in the field of communication, can solve the problems of low accuracy of same-frequency adjacent cells and the inability to search for cells with weak power, and achieve the effect of improving accuracy

Inactive Publication Date: 2012-07-11
HUAWEI TECH CO LTD
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Problems solved by technology

In the case that two cells have the same working frequency, and the power of one cell is stronger than that of the other cell, using the existing method of performing cell search in adjacent cells with the same frequency, only the cell with strong power can be found, while Cells with weak power cannot be searched, therefore, the accuracy of searching for adjacent cells of the same frequency is low

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  • Method and device for searching cell in homogeneous-frequency neighboring cells
  • Method and device for searching cell in homogeneous-frequency neighboring cells
  • Method and device for searching cell in homogeneous-frequency neighboring cells

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Embodiment Construction

[0022] 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.

[0023] Currently, in the 3rd Generation Partnership Project (3GPP for short) LTE system, there are 504 cell identities (Identities, IDs for short) in the physical layer, which are divided into 168 different groups, and each group has 3 different cell IDs. by Indicates the cell ID of the physical layer; Indicates the group number, ranging from ...

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Abstract

The invention provides a method and a device for searching a cell in homogeneous-frequency neighboring cells. The method comprises the following steps of: performing primary synchronization signal (PSS) detection and secondary synchronization signal (SSS) detection on total receipt signals, eliminating signals corresponding to a cell to be eliminated in the total receipt signals according to PSS detection and SSS detection results, acquiring the total receipt signals subjected to interference elimination, then performing PSS detection on the total receipt signals and performing SSS detection on the total receipt signals subjected to interference elimination, or performing PSS detection and SSS detection on the receipt signals subjected to interference elimination. By adopting the method and the device for searching the cell in the homogeneous-frequency neighboring cells, the search accuracy of the homogeneous-frequency neighboring cells can be improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method and device for performing cell search in same-frequency adjacent cells. Background technique [0002] In a Long Term Evolution (LTE for short) system, after the mobile terminal is turned on, it first starts an initial search to search for a serving cell for camping on. After the mobile terminal successfully camps on a certain serving cell, it will start searching for neighboring cells. The main purpose of neighbor cell search is to search for same-frequency neighbor cells or different-frequency neighbor cells to prepare for operations such as reselection or handover. [0003] In the process of searching for same-frequency neighboring cells, there are generally power differences between the serving cell and the same-frequency neighboring cells, and between the same-frequency neighboring cells of the serving cell. For a cell with a weaker power, an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/30
Inventor 魏璟鑫
Owner HUAWEI TECH CO LTD
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