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Ever-decreasing network QOS requirements for stored video streaming in a mobile wireless interworking environment

  • US 7,640,565 B2
  • Filed: 06/19/2003
  • Issued: 12/29/2009
  • Est. Priority Date: 06/21/2002
  • Status: Expired due to Fees
First Claim
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1. A method for downloading a video program using a mobile terminal, the method comprising the steps of:

  • Downloading, to the mobile terminal, the video program at a first data rate from a first radio access network;

    continuing to download the video program at a second data rate from a second radio access network when the mobile terminal is in a coverage area of the second radio access network, wherein the second data transfer rate is faster than the first data transfer rate;

    displaying, at the mobile terminal, the downloaded video program at a playback rate;

    buffering, at the mobile terminal, portions of the downloaded video program that result when a rate at which the video program is downloaded exceeds the playback rate;

    calculating, at the mobile terminal, a third data transfer rate, which is lower than the first data transfer rate, in response to the playback rate, the buffered portions, and a time duration of a remainder of the video program; and

    negotiating, with the first radio access network, the third data transfer rate for continued downloading of the video program, when a difference between the first and third data transfer rates exceeds a threshold level.

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