Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2007-02-02
2010-06-08
Levitan, Dmitry H (Department: 2461)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
Reexamination Certificate
active
07733916
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 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 downstream and upstream channels for MAC message exchanges between the MTS and the modems; S establishing synchronization with the modems by broadcasting first MAC messages via the primary downstream channel; establishing the MAC domain with the modems by broadcasting second MAC messages via the primary downstream channel; calibrating upstream transmission parameters for each of the modems for at least the primary upstream channel by third MAC message exchanges via the primary upstream channel and the primary downstream channel; registering each of the modems by fourth MAC message exchanges via the primary upstream channel and the primary downstream channel; and transmitting packet streams to the modems in one or more the downstream channels simultaneously.
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