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Method and device for synchronization of network devices in wireless communication system

一种无线通信网络、网络设备的技术，应用在无线通信系统领域，能够解决无法实现等问题，达到强鲁棒性的效果

Active Publication Date: 2008-02-13
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

[0010] The disadvantage of this scheme is that the synchronization process of a base station requires an upper base station or main base station as the control base station to control the sending and receiving time slots of the time reference signal, so that the transmitter and receiver coordinate with each other, which is only applicable to TDD mode , which cannot be realized in FDD (Frequency Division Duplex) mode

Method used

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  • Method and device for synchronization of network devices in wireless communication system
  • Method and device for synchronization of network devices in wireless communication system
  • Method and device for synchronization of network devices in wireless communication system

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Embodiment Construction

[0028] FIG. 2 is a structural diagram of a network with an external synchronization source according to this approach. It includes an external synchronization source 0 (such as GPS or GNSS system or original clock), multiple base stations, specifically, wherein the base station 1 communicates with the external synchronization source 0 through a wired link or a wireless link such as microwave, infrared, laser, etc. Therefore, base station 1 and external synchronization source 0 can be regarded as synchronous.

[0029] The wireless network shown in FIG. 2 also includes base station 2-base station 6, wherein base stations 2, 3, and 4 are adjacent to base station 1, and base station 5 and base station 6 are far enough away from base station 1.

[0030] Since the base station 1 is directly synchronized with the external synchronization source 0, according to the technical solution provided by the present invention, the base station 1 can be regarded as a master base station for rea...

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Abstract

The invention provides a device and a method used to synchronize adjacent base stations in a wireless communication network. According to the technical proposal provided by the invention, the base stations turn off transmitters at random to receive sync signals of adjacent base stations, and further acquire new local synchronization reference time based on the synchronization reference time of the adjacent base stations. By adopting the device and the method provided by the invention, synchronization between base stations having high robustness can be achieved.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a method and device for base station synchronization in the communication system. Background technique [0002] In a wireless communication system using OFM (Orthogonal Frequency Division Modulation), if the cell base stations are not all equipped with GPS (Global Positioning System) or Galileo (Galileo) synchronization systems, in order to be able to perform correlation combining, an accuracy of microseconds is required. Level synchronization method to achieve strict synchronization between base stations. If the synchronization between base stations cannot meet the above requirements, the signal arriving at the user equipment receiver may fall outside the CP window, resulting in interference between symbols, affecting pilot estimation and data reception. [0003] The schemes used to realize the above synchronization in the prior art include: [0004] 1. The method pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L7/04H04Q7/30H04W92/20
CPCH04W92/20H04J3/0682H04J3/0638H04W56/00
Inventor 汪勇刚胡中骥陈宇
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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