Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2010-03-20
2010-12-07
Levitan, Dmitry H (Department: 2461)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
Reexamination Certificate
active
07848357
ABSTRACT:
In a point to multi-point share-media network, method and apparatus of media access control (MAC) for a modem termination system (MTS) to communicate with a plurality of modems over a set of downstream and upstream channels comprising the steps of designating a MAC domain comprising the set of downstream and upstream channels, in which a primary downstream channel and a primary upstream channel being chosen from the set of channels for MAC message exchanges between the MTS and the modems; establishing synchronization with the modems; calibrating upstream transmission parameters and registering each of the modems; receiving without error a bandwidth request from the modem in one of the allocated contention transmission time slots; and transmitting a bandwidth grant to the modems to transmit a number of bytes, starting at a specified time and at a periodic time interval thereafter, with a specified burst profile, and in a specified upstream channel.
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