Patent ID: 9220076
Filing Date: 2015-12-22
Classification: H04J,H04W

Abstract:
1. A base station, comprising: a base station indoor apparatus; and a base station outdoor apparatus communicably coupled to the base station indoor apparatus via at least a single data line; wherein the base station outdoor apparatus comprises a ground service antenna configured to receive a ground service signal, a satellite antenna configured to receive a satellite radio frequency signal, a satellite signal processing module configured to perform decoding processing on the satellite radio frequency signal received by the satellite antenna to obtain a reference clock source signal, and a second ground service processing module configured to perform demodulation processing on the ground service signal received by the ground service antenna to obtain a demodulated signal; wherein the second ground service processing module is further configured to perform phase discrimination processing on a current system clock signal and the reference clock source signal that is obtained by the satellite signal processing module to obtain a phase difference, to generate a data packet carrying the phase difference, and to send the data packet carrying both the phase difference obtained from the satellite radio frequency signal and the demodulated signal obtained from the ground service signal over the single data line to the base station indoor apparatus; and wherein the base station indoor apparatus comprises a third service processing module, configured to receive the data packet and the demodulated signal, to obtain the carried phase difference from the data packet, and to perform phase-locked tracking according to the phase difference, so as to obtain a calibrated system clock signal.