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

A technology of picocell base stations and base station controllers, applied in the field of synchronization between picocell base stations and base station synchronization, can solve the problems of increased transmission costs, increased system complexity and cost, and increased GPS receiving circuits, etc., to reduce operation and maintenance cost, save manpower and material resources, and reduce manufacturing costs

Inactive Publication Date: 2008-05-21
ZTE CORP
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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

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

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Embodiment Construction

[0039] The system for realizing synchronization of picocell base stations proposed by the present invention includes macrocell base station BTS, base station controller BSC, base station controller iBSC with IP interface, Internet network and picocell base station Pico; wherein, master-slave synchronization is adopted between BTS However, Pico receives and searches the BCH frequency point through the air interface of the BTS and successfully analyzes the FCCH information in it to determine the "0 time slot" of the BCH carrier, thereby continuing to analyze the synchronization channel SCH to obtain the timing information of the BCH carrier, and according to The timing information calculates and corrects the frequency offset of the local 26M clock, so as to realize the synchronization between Picos. In the downlink direction, Pico receives the control signaling sent by iBSC through the IPAbis port, and controls and manages each wireless channel; at the same time, it processes the...

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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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Application Information

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IPC IPC(8): H04B7/26H04B1/707H04W48/16H04W56/00H04W92/20
Inventor 杭靠文雷颖蓓崔亦军许铭吴双桂俞连浦蔡永建
Owner ZTE CORP
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