Radio over Ethernet

摘要

A method of wireless communication utilizing a communication system that includes a baseband module that is in communication with a radio module via an Ethernet communication link. The method of wireless communication can include the synchronization of the internal reference clocks of the baseband module and radio module. A hierarchical arrangement can be used to synchronize the internal reference clocks with a grandmaster clock within the communication system. Further, packet transit calculations can be used to synchronize the internal reference clocks.

主权项

1. A method of wireless communication utilizing baseband circuitry in communication with radio circuitry via an Ethernet communication link, the method comprising:
recovering a first clock frequency at the baseband circuitry from a grandmaster clock provided from primary reference clock (PRC) circuitry; synchronizing a frequency of a first internal reference clock of the baseband circuitry based on the recovered clock frequency; recovering a second clock frequency at the radio circuitry from a signal received over the Ethernet communication link from the baseband circuitry, the second recovered clock frequency being frequency locked to the grandmaster clock; synchronizing a frequency of a second internal reference clock of the radio circuitry based on the second clock frequency; and synchronizing a phase of the first internal reference clock and a phase of the second internal reference clock, a phase offset between the phase of the first internal reference clock and the phase of the second internal reference clock being determined by utilizing a time stamped packet sent by the baseband circuitry to the radio circuitry via the Ethernet communication link and returned by the radio circuitry to the baseband circuitry via the Ethernet communication link.