System, method and device for implementing synchronization of micromicro honeycomb base station

Abstract

The invention relates to a system for realizing microcellular base station synchronization, which is used for the synchronization of GSM; the system comprises: BTS, BSC and Pico; wherein the master-slave synchronization method is adopted between BTSs for realizing synchronization; the hollow port Um of the BTS is adopted for Pico to realize the synchronization between Pico, i.e. the receiving channel of the Um port is used for terminal operation in synchronous receiving state to receive and search the broadcast signal channel BCH frequency points of BTS and then analyze frequency correction signal channel FCCH message so as to obtain BCH carrier timing message, according to timing message calculation and correcting the frequency deviation of local reference clock, the synchronization between Pico is realized. The invention utilizes terminal chipset to make the Pico be operated at two states of either terminal frequency band or base station frequency band, therefore no other base station functions are affected when realizing the synchronization of Pico, thereby enhancing systematic integration degree effectively and reducing systematic manufacture and maintenance cost.

Description

technical field [0001] The invention relates to base station synchronization technology in the field of mobile communication, in particular to the synchronization technology between picocell base stations in Global System for Mobile communication (GSM, Global System for Mobile communication). Background technique [0002] In a synchronous wireless communication system, the base station is in the air interface part of the mobile communication system and is an important control device in the wireless communication link. The synchronization problem between base stations directly affects the quality of wireless communication services, that is, maintaining synchronization between base stations plays an important role in ensuring the maximum capacity of the system and providing high-quality services. [0003] At present, there are two ways to realize synchronization in GSM base stations: adopting a global positioning system (GPS, Global Positioning System) way, or adopting a maste...

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Problems solved by technology

[0006] The above synchronization implementation scheme has the following disadvantages: (1) adopting the GPS method to realize synchronization needs to increase the GPS receiving circuit, which increases the complexity and cost of the system, and increases the circuit area; (2) adopts the master-slave synchronization system method to realize synchronization , the synchronization signal needs to be transmitted through a dedicated line, which increases the transmission cost and makes the application inflexible; (3) the existing two synchronization implementation schemes are feasible in the macrocell base station system, but in the picocell base station system due to the above The shortcomings are not applicable, especially in the picocell base station based on IP Abis, the master-slave synchronization system cannot be realized at all

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