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Apparatus, and associated method, for communicating packet data in a network including a radio-link

  • US 9,007,123 B2
  • Filed: 06/28/2004
  • Issued: 04/14/2015
  • Est. Priority Date: 06/01/2000
  • Status: Expired due to Fees
First Claim
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1. An apparatus for controlling packet-based communication over a communication path between a mobile host and a network host, the apparatus comprising:

  • a controller and associated logic that, when executed, causes the apparatus to;

    measure a packet-data throughput rate upon at least one of a forward link or a reverse link of a radio-link in a radio part of the communication path;

    estimate an amount of time spent in retransmission of packet data over the radio-link in the radio part of the communication path;

    measure an end-to-end round-trip time for packet-based communication over the communication path between the mobile host and the network host, said end-to-end round-trip time representing a total time taken for packet-based communication over the radio part of the communication path and a wire-line part of the communication path;

    calculate a modified end-to-end round-trip time for packet-based communication over the communication path between the mobile host and the network host by subtracting the estimated amount of time spent in retransmission of packet data over the radio-link from the measured end-to-end round trip time for packet-based communication; and

    calculate a transmission window size within which to transmit a data packet as a mathematical product of the measured packet-data throughput rate upon the at least one of the forward link or the reverse link of the radio-link, and the modified end-to-end round-trip time, thereby taking into account an effect of packet-data retransmission over the radio-link in calculating the transmission window size.

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