Patent ID: 9277517
Filing Date: 2016-03-01
CPC Classification: G01S,H04B,H04W

Claim Text:
1. A method for stabilizing a local oscillator of a first base station in a macro network, the method comprising: the first base station in the macro network receiving a frequency modulation (FM) radio signal from an FM station, wherein the first base station and the FM station are both located in a given telecommunications market, and wherein the first base station comprises the local oscillator; the first base station phase-locking the local oscillator to the FM radio signal; the first base station sending an identifier of the FM radio signal or the FM station to a network operations center; in response to sending the identifier of the FM radio signal or the FM station, the first base station periodically receiving a phase-error indication generated by the network operations center, wherein each received phase-error indication indicates a phase drift of the FM radio signal from the FM station; and the first base station using each received phase-error indication to adjust a phase of the local oscillator in order to account for the phase drift of the FM radio signal.