Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2008-04-15
2008-04-15
Hyun, Soon D. (Department: 2616)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S432000, C370S437000, C370S449000, C370S462000, C725S116000, C725S120000
Reexamination Certificate
active
07359332
ABSTRACT:
Enhanced DOCSIS upstream channel changes. A CMTS directs channel changing of a CM, sometimes between upstream data bursts. Logical channels, part of a single frequency channel, may be used, and the channel changing may be performed between those logical channels. Multiple upstream burst profiles and/or modulation densities may be used providing high degrees of robustness, fidelity, and throughput and allowing great channel flexibility. A CM may be switched between channels without losing transmitter capability. Even if some throughput rate may be sacrificed during the channel changing, the CM will still be able to continue data throughput. Then, the new channel may then undergo the initialization and ranging processes thereby enabling greater throughput on that new channel. After undergoing the initialization and ranging processes, the new channel will then be a fully equivalent member of the CM communication system.
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Currivan Bruce J.
Kolze Thomas J.
Broadcom Corporation
Garlick & Harrison & Markison
Hyun Soon D.
Short Shayne X.
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