Master-slave TDMA time slot synchronization calibration method and device

Abstract

The application relates to a master-slave TDMA time slot synchronization calibration method and a device. The method comprises the following steps: at least one slave machine receives a synchronization frame from a master machine, wherein the synchronization frame includes a first count value of a timing counter in the master machine; the at least one slave machine analyzes the synchronization frame to get the first count value; and for each slave machine, the TDMA time slot of the slave machine is adjusted according to the first count value and a second count value of a timing counter in the slave machine in order to synchronize the TDMA time slot of the slave machine with the TDMA time slot of the master machine. Synchronization is carried out directly using the clock sources of the master machine and the slave machines, without the need to add an RTC clock source and a GPS module. The accuracy is improved while the cost is reduced.

Description

technical field [0001] The present application relates to the technical field of data transmission, in particular to a master-slave TDMA time slot synchronization calibration method and device. Background technique [0002] At present, in the implementation methods of Time Division Multiple Access (TDMA) time slot synchronization, most of them rely on the RTC clock or GPS module to provide an accurate clock source for time slot synchronization, that is, it is necessary to set an RTC (Real- time Clock) clock source or a Global Positioning System (Global Positioning System, GPS) module to provide accurate clock information. Afterwards, slot synchronization is performed using this clock information. [0003] However, using an RTC clock source or a GPS module will not only increase the cost, but also have limitations in use. For example, when a GPS module is used, in an indoor environment, the solution cannot be realized because the GPS signal is weak or disappears. When an RT...

AI Technical Summary

Problems solved by technology

[0003] However, using an RTC clock source or a GPS module will not only increase the cost, but also have limitations in use

For example, when the GPS module is used, in an indoor environment, the solution cannot be realized due to the weak or disappearing GPS signal. When the RTC clock source is used, the RTC clock needs to be calibrated to ensure the accuracy of the clock information.

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