Method and Apparatus of Delivering Upstream Data in Ethernet Passive Optical Network Over Coaxial Network

摘要

An apparatus for interconnecting a fiber-optic network and a coax network comprising a coax line terminal (CLT) configured to couple to an optical line terminal (OLT) at the fiber-optic network and a plurality of coax network units (CNUs) at the coax network and to cache data received from the CNUs and forward the cached data to the OLT upon receiving a message from the OLT that assigns a transmission cycle for a specified CNU, wherein the CLT forwards the cached data to the OLT upon receiving the message regardless of whether the cached data corresponds to the specified CNU.

主权项

1. An apparatus for bridging a digital optical network and a coax network, comprising:
a radio frequency interface configured to couple to a plurality of coaxial network units (CNUs) via the coax network; a network side interface configured to couple to an optical line terminal (OLT) via the digital optical network; a memory; and a processor coupled to the memory, the network side interface, and the radio frequency interface, wherein the processor is configured to:
receive a plurality of packets from the CNUs via the radio frequency interface;queue the packets in the memory according to logical links;receive a first upstream scheduling message from the OLT via the network side interface that assigns one or more optical transmission time windows for one or more CNUs;schedule the packets for upstream transmissions over the digital optical network; andforward a first of the packets to the OLT during a first of the optical transmission time windows via the network side interface, wherein the first packet corresponds to a CNU that is different from a CNU assigned to the first optical transmission time window by the first upstream scheduling message.