A synchronization method and device between base stations

Abstract

A synchronization method and device between base stations, wherein the method includes the following steps: a source base station sends a time synchronization request to a target base station, so that the target base station feeds back an acknowledgment message for the time synchronization request; the source base station receives the A confirmation message fed back by the target base station; the source base station sends a specific sequence to the target user terminal located in a specific area, so that the target user terminal sends the specific sequence; the source base station detects the specific sequence, and in the Time synchronization is performed between the source base station and the target base station. With the present invention, the user terminal located in a specific area forwards a specific sequence, and the base station to be synchronized can detect the specific sequence to realize the time synchronization between the base stations. Since the determination of the user terminal is simple and convenient, it helps to shorten the synchronization cycle between the base stations , thereby improving the synchronization accuracy.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a synchronization method and equipment between base stations. Background technique [0002] In a base station-based mobile communication system, the synchronization between base stations is closely related to the synchronization quality of wireless communication services. Among the existing synchronization technologies between base stations, one is to achieve synchronization through a built-in Global Positioning System (Global Positioning System, GPS) or Beidou, IEEE 1588 V2; the other is to achieve synchronization based on the assistance of user terminals. Although the former can achieve high-precision time synchronization, the guarantee of its accuracy depends on the accurate frequency of the counter, and it has high requirements on the performance of the target base station and the network, making it difficult to implement. The latter is implemented depending o...

AI Technical Summary

Problems solved by technology

Although the former can achieve high-precision time synchronization, the guarantee of its accuracy depends on the accuracy of the counter frequency, and it has high requirements on the performance of the target base station and the network, making it difficult to achieve

The latter is implemented depending on the user terminal that needs to switch the base station. One way is: when the user terminal initiates the process of switching from the source base station to the target base station, the source base station and the target base station determine that the same message sent by the user terminal is received. At the time of random access to information, the time difference between the source base station and the target base station is further obtained, and then the synchronization between the source base station an

Images