Patent ID: 9143290
Filing Date: 2015-09-22
Classification: H04L

Abstract:
1. A communications apparatus for receiving payload data transmitted on a downstream using Orthogonal Frequency Division Multiplexed (OFDM) symbols via a cable network, the communications apparatus comprising: a receiver comprising a receiver filter, an analogue to digital converter, and a Fast Fourier Transformer, the receiver being configured to receive a downstream signal representing the payload data modulated onto one or more OFDM symbols, the downstream signal comprising a demodulator configured to demodulate the OFDM symbols of one of the data profiles to detect and to recover the payload data using the physical layer signalling data, wherein the physical layer signalling data is received as a preamble of one of the scheduling intervals, wherein the receiver and the demodulator are further configured to receive one or more of the scheduling intervals, which include in separate communications resources of the downstream signal a media access control (MAC) signal representing upstream messages relating to the transmission of data from the receiver to a transmitter.