Method and system for implementing synchronization among micro base stations

摘要

The present disclosure provides a method and system for implementing synchronization among micro-base stations, including: a micro-base station intercepts a wireless reference signal of an air interface, and selects a synchronization reference object according to an intercepted wireless reference signal; and the micro-base station implements synchronization processing through detecting the wireless reference signal of the selected synchronization reference object, and adjusts its own synchronization information. The method for implementing synchronization among micro-base stations disclosed in the present disclosure is implemented on the basis of the wireless air interface signals of the micro-base stations, requires no additional synchronization hardware devices (such as Global Positioning Satellite (GPS) receiving apparatus, etc.) and has low cost. By the solution disclosed in the present disclosure, the mutual interference caused by asynchronization between a Time Division Duplex (TDD) micro-base station and other base stations is eliminated flexibly.

主权项

1. A method for implementing synchronization among micro-base stations, comprising presetting synchronization information in a micro-base station, and further comprising:
intercepting a wireless reference signal of an air interface and selecting a most precise synchronization reference object according to an intercepted wireless reference signal by the micro-base station, wherein the most precise synchronization reference object is a synchronization reference object having minimum error with a clock of a Global Navigation Satellite System (GNSS); and implementing synchronization processing by the micro-base station through the wireless reference signal of the selected synchronization reference object; wherein the synchronization information comprises a synchronization state value or comprises a synchronization state value and a self-synchronization indication value; and the micro-base station determines the most precise synchronization reference object through the synchronization information; and the selecting a most precise synchronization reference object comprises: when a synchronous signal from a satellite is intercepted, selecting the satellite as the synchronization reference object; otherwise, when a wireless reference signal from a macro-base station is intercepted, selecting the macro-base station as the synchronization reference object; otherwise, when a wireless reference signal from other micro-base stations is intercepted, selecting a micro-base station with a self-synchronization indication value No as the synchronization reference object from the intercepted micro-base station and the micro-base station; when there are two or more than two micro-base stations with the self-synchronization indication value No, selecting a micro-base station with a minimum synchronization state value as the synchronization reference object from the two or more than two micro-base stations.