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Synchronization method and device

A technology of primary synchronization signal and secondary synchronization signal, which is applied in the field of communication, can solve the problems of time-consuming time synchronization, etc., and achieve the effect of saving time-consuming synchronization, reducing two correlation operations, and reducing time-consuming

Inactive Publication Date: 2018-01-26
HISENSE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0011] The embodiment of the present invention proposes a synchronization method and a synchronization device to solve the problem that time synchronization takes a long time

Method used

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  • Synchronization method and device

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Embodiment Construction

[0084] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0085] refer to figure 1 , which shows a flow chart of the steps of a synchronization method according to an embodiment of the present invention, which may specifically include the following steps:

[0086] Step 101, broadcast a radio frame.

[0087] In a specific implementation, the embodiment of the present invention may be applied in an evolved base station (Evolved Node B, eNodeB), and the evolved base station eNodeB broadcasts a radio frame.

[0088] A user equipment (User Equipment, UE) can perform time synchronization and frame synchronization through the radio frame, and then perform cell search and access the evolved base station eNodeB.

[0089] For different standards, the structure of the radio frame is different.

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Abstract

The embodiment of the invention provides a synchronization method and device. The method used in an evolved base station and comprises the following steps: broadcasting a wireless frame, wherein the wireless frame carries a main synchronization signal and an auxiliary synchronization signal, the main synchronization signal represents blank contents, and the auxiliary synchronization signal represents a physical layer cell number. Therefore, user equipment can detect the auxiliary synchronization signal based on the locating of the main synchronization signal and directly obtain the physical layer cell number corresponding to the auxiliary synchronization signal, the detection of the main synchronization signal only requires one related operation, twice related operations can be reduced, and 2 / 3 synchronization time consumption of the main synchronization signal is reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a synchronization method and a synchronization device. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) system, cell search is a frequently occurring physical layer process. When a user terminal is powered on, reselects a cell, or switches a cell, etc., it obtains a cell ID through the cell search process and performs a time-consuming process. Synchronization (that is, frame synchronization), and then monitor the broadcast channel and other downlink channels to obtain system information, and stay in the cell to initiate communication services. [0003] In the LTE system, a hierarchical synchronization signal structure is used to realize cell search, and the synchronization signal includes a primary synchronization signal (Primary Synchronization Signal, PSS) and a secondary synchronization signal (Secondary Synchronization Signal, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
Inventor 吕叶青刘宏举
Owner HISENSE
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