Method and apparatus of managing bandwidth allocation for upstream transmission in a unified optical-coaxial network

摘要

A method of allocating upstream bandwidth on a network comprising mapping an integer portion of a value obtained from a grant start time into a symbol number of a data frame on a coaxial segment of the network, wherein the value comprises the grant start time in units of a length of a data frame in the coaxial segment of a network, and wherein the length of the data frame comprises a preselected number of units of time defined in an optical segment of a network; mapping a fractional portion of the value obtained from the grant start time into a subcarrier number of the data frame; and mapping a grant length into a number subcarriers of the data frame.

主权项

1. A coaxial network unit (CNU) comprising:
a processor configured to:
extract a grant start time from a message allocating a time window for upstream transmission of data;extract a grant length from the message allocating the time window for upstream transmission of data;map an integer portion of a value obtained from the grant start time into a symbol number of a data frame, wherein the value comprises the grant start time in units of a length of a data frame in a coaxial segment of a network, and wherein the length of the data frame comprises a preselected number of units of time defined in an optical segment of the network;map a fractional portion of the value obtained from the grant start time into a subcarrier number of the data frame; andmap the grant length into a number of subcarriers of the data frame.