Generating frequency reference signals

摘要

The invention is directed to methods and systems for generating frequency reference signals from a radio signal received from a large-coverage access component, such as a base station. The radio signal is received and processed by an oscillator to filter out abnormalities. Consequently, a frequency reference signal is generated that is encapsulated into packets and delivered to one or more small-coverage access components using the Precision Timing Protocol or some other protocol that is useable by the small-coverage access components. The small-coverage access components comprise one or more of a femtocell or a picocell.

主权项

1. A method for generating frequency reference signals from a received radio signal, the method comprising:
receiving a radio signal from a large-coverage access component; providing the radio signal to a signal processor that converts the radio signal into an intermediate reference signal; providing the intermediate reference signal to an oscillator; filtering jitter and other abnormalities from the radio signal to generate a frequency reference signal; encapsulating the frequency reference signal into packets that are useable by one or more small-coverage access components; and delivering the packets that comprise the frequency reference signal to the one or more small-coverage access components through a physical interface.