Method and system for providing time offset to minislot...

Details Method and system for providing time offset to minislot... Method and system for providing time offset to minislot...

2006-02-28

2006-02-28

Qureshi, Afsar (Department: 2667)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S347000, C370S519000

Reexamination Certificate

active

07006535

ABSTRACT:
A method and system for allocating an initial maintenance request (IMR) for an upstream channel in a communications system, wherein the communication system includes a headend and at least one remote device associated with the channel. A first propagation delay from the headend to the remote device having the greatest delay is determined. Likewise, a second propagation delay from the headend to the remote device experiencing the least delay is determined. The IMR is then defined to be shorter than the first propagation delay and at least as long as the difference between the two propagation delays. The starting point of the IMR is established by modifying the clock output of the headend. A modification value is added to the headend clock output. The modification value corresponds to a time interval that can be as long as the propagation delay from the headend to the remote having the shortest delay.

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