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Method, apparatus implementing base station synchronization and base station

A base station synchronization, base station technology, applied in the field of synchronization, can solve problems such as the base station not working normally

Active Publication Date: 2009-03-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using this method can also solve the problem that the base station cannot work normally due to the fault of GPS

Method used

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  • Method, apparatus implementing base station synchronization and base station
  • Method, apparatus implementing base station synchronization and base station
  • Method, apparatus implementing base station synchronization and base station

Examples

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Embodiment Construction

[0074] At present, each base station uses GPS as a reference, so as to realize the synchronization of base stations in the whole network. The basic idea of ​​the present invention is to use the time slot and SFN of a certain base station as a standard, and other base stations refer to the time slot and SFN of the base station to adjust the time slot and SFN of the base station, thereby realizing the purpose of synchronizing the base stations of the whole network.

[0075] Wherein, the reference base station may be called a reference base station, and the base station that needs to refer to the reference base station to adjust its own time slot and SFN may be called a reference base station. The reference base station can obtain the time slot information and calculate the SFN of the base station by receiving the time information of the GPS. The reference base station can even use a crystal oscillator with high stability to determine the time slot of the base station and calcula...

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PUM

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Abstract

The invention discloses a method for realizing base station synchronization, which includes the following steps: a second base station defines a first base station according to indication information sent by other base stations; the second base station searches the position of a descending pilot frequency time slot (DwPTS) of the first base station and adjusts the position of the DwPTS according to the position of the searched DwPTS; the second base station reads a system frame number (SFN) from the broadcasting information of the first base station and updates the SFN to be the read SFN. In the invention, the second base station realizes synchronization among different base stations through building the time slot synchronization and frame synchronization with the first base station. Not every base station is needed to be provided with a GPS receiver, therefore, the system cost is greatly reduced. In addition, the realization of the invention can completely break away GPS, therefore, the synchronization among all the base stations can be still ensured when the GPS fails. The invention also discloses a device for realizing the synchronization of the base station and a relevant base station.

Description

technical field [0001] The present invention relates to a synchronization technology in a mobile communication system, in particular to a method and device for realizing base station synchronization in a mobile communication system, and a corresponding base station. Background technique [0002] In a mobile communication system, functions such as user handover between base stations can only be realized if the base stations are kept synchronized. Taking the Time Division Duplex (TDD) system as an example, each base station has a subframe number (SUBSFN) counter, which counts once every 5 milliseconds, and counts cyclically within 0-8191. The System Frame Number (SFN, System Frame Number) is half of the SUBSFN counting frequency. Since the SUBSFN is accumulated at a fixed interval of 5 milliseconds, the base station uses the SUBSFN counting method to identify different time points. The so-called synchronization between base stations means that the time slots and SFNs of all ...

Claims

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Application Information

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IPC IPC(8): H04Q7/30H04B7/00
Inventor 梁志科范永林卫孔健
Owner DATANG MOBILE COMM EQUIP CO LTD
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