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Cable modem with dribble grant access system and method

  • US 6,807,193 B1
  • Filed: 06/20/2000
  • Issued: 10/19/2004
  • Est. Priority Date: 06/20/2000
  • Status: Expired due to Fees
First Claim
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1. A cable modem comprising:

  • a transmitter connected to a modem termination system by a medium;

    a receiver connected to the modem termination system by the cable;

    a memory forming a transmit queue;

    an input/output supplying generated data units, said data units from time to time including voice communications data units;

    a data unit controller for sending data units to the input/output from the receive queue and transmitting data units to the modem termination system via the transmit queue and receiving unsolicited grant service (UGS) from the modem termination system, providing fixed grants of bandwidth time slots, on a real time basis, the controller using unsolicited data grants for transmission to the modem termination system and for asserting a queue indicator, in a transmission to the modem termination system upon detecting data units accumulating in the transmission queue and receiving in response an occasional extra grant and using occasional extra grant to send the accumulated data units until the queue indicator is not asserted.

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