Method, device and system for achieving base station air interface synchronization

Abstract

The invention discloses a method, device and system for achieving base station air interface synchronization, and relates to the field of network communication. The method comprises the steps that a base station air interface synchronization device which is independent of a first base station receives an air interface signal of an adjacent reference base station; the base station air interface synchronization device caries out the demodulation processing of an air interface signal, and obtains the information for the base station air interface synchronization. the base station air interface synchronization device transmits the information for the base station air interface synchronization to a first base station, so that the first base station achieves the air interface synchronization with the adjacent reference base station according to the received information. According to the embodiment of the invention, the base station air interface synchronization device achieves the synchronization of base station air interfaces with different systems and different frequency bands, and the method, device and system are not limited by the processing capability of a baseband SoC of the basestation, do not occupy a normal business receiving and transmitting time gap, and are a flexible, simple and convenient implementation scheme of the air interfaces with different systems and differentfrequency bands.

Description

technical field [0001] The present invention relates to the field of network communication, in particular to a method, device and system for realizing base station air interface synchronization. Background technique [0002] Air interface synchronization is a base station clock synchronization technology. For Time Division Duplexing (TDD) systems, such as Time Division Long Term Evolution (TD-LTE), if the clocks between base stations are not synchronized, it will cause cross-interference between uplink and downlink time slots, seriously affecting the network performance. [0003] There are three main methods of clock synchronization: [0004] 1. Synchronization based on global satellite positioning system [0005] For example, Global Positioning System (Global Positioning System, GPS), Beidou, etc. This type of solution needs to install GPS for each base station, which requires high engineering construction and maintenance, and indoor base stations cannot receive satellit...

AI Technical Summary

Problems solved by technology

[0013] 1. The air interface synchronization operation occupies the normal time slot and radio frequency receiving channel, although some methods can be used to reduce the impact on the user equipment (User Equipment, UE), such as the single frequency proposed by the third generation partnership project (3rd Generation Partnership Project, 3GPP) Network multicast / broadcast (Multicast / Broadcast over Single Frequency Network, MBSFN) subframe mode and TDD special subframe mode, but there is still a certain impact on the business;

[0014] 2. Limited by the processing capability of the baseband System on Chip (SoC), it is impossible to demodulate some data of different frequencies and different formats, and it is impossible to realize the adjacent reference base stations of these different frequencies and different formats. air interface listening and synchronization

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