Dynamic mode control of upstream ONU transmitters in an RFoG network
AssigneeARRIS Enterprises LLC
InventorsVenkatesh G. Mutalik, Thomas J. Cloonan, Ayham Al-banna, Ian G. Wheelock, Charles Peter Cheevers
Life of this patent
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Abstract
Systems and methods for relaying upstream signals received from a plurality of subscribers to a remote head end. Some preferred embodiments include upstream transmitters in one or more Optical Network Units that may be dynamically and individually controlled to determine whether the upstream transmission is in burst mode or continuous mode.
Claims20
A cable modem operatively connected to an Optical Network Unit (ONU) configured to send upstream signals within a range of frequencies dedicated in the ONU for the upstream signals, the cable modem comprising:
- an output configured to send a signal to the (ONU), the ONU having a laser that retransmits the signal;
- and
- a tone generator capable of selectively inserting a tone ahead of the signal so as to activate the laser prior to a time that the ONU receives the signal, the tone outside the range of frequencies dedicated for upstream signals and inserted ahead of the signal.
A system comprising:
- an ONU proximate a subscriber, the ONU having a laser configured to retransmit a first signal comprising an upstream data signal containing information to be retransmitted;
- and
- a cable modem operably connected to the ONU and capable of sending the first signal and a second signal, the second signal not containing the upstream data signal, the second signal outside any range of frequencies dedicated for upstream signals and used by the ONU to improve the quality of the upstream data signal.
A system comprising:
- a first ONU and a second ONU, each having a laser configured to retransmit in burst mode a respective upstream data signal containing information to be retransmitted, the first ONU and the second ONU each connected to a common combiner unit that forwards the retransmitted signals to a head end;
- a first cable modem configured to send an upstream data signal to the first ONU and configured to force the laser of the first ONU into continuous mode;
- and
- a second cable modem connected to the second ONU and configured to send an upstream data signal to the second ONU without forcing the laser of the second ONU into continuous mode.
Dependencies are inferred from the claim text.