Passive optical network data over cable service interface specification upstream proxy architecture over the next generation hybrid fiber-coaxial networks
AssigneeFuturewei Technologies, Inc.
InventorYuxin Dai
Life of this patent
Estimating the term…
Abstract
An apparatus comprising a wavelength division multiplexer (WDM), an optical network unit (ONU) coupled to the WDM, a passive optical network (PON) data over cable service interface specification (DOCSIS) upstream proxy (PDUP) coupled to the ONU and configured to couple to a coaxial cable, and a downstream (DS) optical/electrical (O/E) converter coupled to the WDM and configured to couple to the coaxial cable. An apparatus comprising a WDM, an optical line terminal (OLT) coupled to the WDM, a cable model termination system (CMTS) coupled to the OLT via an upstream external physical (PHY) interface (UEPI), and a DOCSIS and a Quadrature Amplitude Modulation (QAM) unit coupled to the WDM and the CMTS.
Claims15
An apparatus comprising:
- a wavelength-division multiplexer (WDM);
- an optical network unit (ONU) coupled to the WDM;
- a passive optical network (PON) data over cable service interface specification (DOCSIS) upstream proxy (PDUP) coupled to the ONU and configured to:
- couple to a coaxial cable;
- encapsulate an upstream burst signal into a payload field of an Ethernet frame using a time-division multiplexing (TDM) PON protocol to provide an upstream (US) scheduling mechanism in a point to multipoint (P2MP) topology of a hybrid fiber-coaxial (HFC) network, wherein the upstream scheduling mechanism does not use DOCSIS timing information, and wherein the Ethernet frame comprises a frame check sequence (FCS) field;
- and
- encapsulate the Ethernet frame into an Ethernet PON (EPON) frame comprising an EPON header field;
- and
- a downstream (DS) optical/electrical (0/E) converter coupled to the WDM and configured to couple to the coaxial cable.
A method comprising:
- receiving a plurality of upstream burst signals from a plurality of downstream network elements (DNEs) via an electrical distribution network (EDN), wherein the EDN comprises a data over cable service interface specification (DOCSIS) upstream proxy;
- encapsulating each upstream burst signal into a payload field of an Ethernet frame using a time-division multiplexing (TDM) passive optical network (PON) protocol to provide an upstream scheduling mechanism in a point to multipoint (P2MP) topology of a hybrid fiber-coaxial (HFC) network, wherein the upstream scheduling mechanism does not use DOCSIS timing information, and wherein the Ethernet frame comprises a frame check sequence (FCS) field;
- encapsulating the Ethernet frame into an Ethernet PON (EPON) frame comprising an EPON header field;
- and
- transmitting each frame via a PON to an upstream network element (UNE) coupled to the PON.
Dependencies are inferred from the claim text.