5G base station high-precision time service method and system based on satellite and 5G air interface fusion

Abstract

The invention belongs to the field of 5G air interface time service, and discloses a 5G base station high-precision time service method and system based on satellite and 5G air interface fusion. A receiver is installed in a 5G base station, and the one-way time service time of a Beidou system is obtained. And meanwhile, the 5G base station receives a time signal sent by a 5G server side, and obtains a deviation value of two times. And a deviation calibration value model is established, and model parameters are obtained. And the time deviation value and the model parameters are loaded to a 5G wireless signal end, and sent to a user. The user obtains two types of information, including 5G air interface time information and a time deviation value. And when the 5G base station can receive a satellite signal, the 5G air interface time information is corrected, and 5G air interface user time service is obtained. And when the 5G base station cannot receive the satellite information, a time deviation calibration value of a period of time is predicted by using a deviation calibration value model, 5G air interface time information is corrected, and provided to the user.

Description

technical field [0001] The invention belongs to the field of 5G air interface timing, in particular to a 5G base station high-precision timing method and system based on the integration of satellites and 5G air interfaces. Background technique [0002] The 5G air interface timing architecture consists of a transmission backbone layer and a convergence layer. The backbone layer mainly generates and maintains high-precision time standards. The aggregation layer is mainly responsible for receiving high-precision time from the backbone layer and distributing it to each base station. The timing process of 5G air interface time from the server to the terminal is as follows: (1) the transmission backbone layer receives the time signal injected by the high-precision timing server; (2) the backbone time signal reaches the access layer device through the transmission link of the synchronization network. (3) The access layer equipment outputs the time synchronization signal to the wir...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a 5G base station high-precision timing method and system based on satellite time synchronization to solve the problem of low timing accuracy between the 5G base station and the terminal in the prior art

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