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

  • US 20060156365A1
  • Filed: 06/19/2003
  • Published: 07/13/2006
  • Est. Priority Date: 06/21/2002
  • Status: Active Grant
First Claim
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1. A method for downloading and displaying a video program using a mobile terminal in an interworking environment that includes a first radio access network having a first data transfer rate and a second radio access network having a second data transfer rate that is faster than the first data transfer rate, the method comprising the steps of:

  • downloading, through the first or second radio access networks, the video program at respective first and second data transfer rates, the video program being downloaded at the second data transfer rate when the mobile terminal is in the coverage area of the second radio access network;

    displaying the downloaded video program at a predetermined playback rate;

    buffering excess portions of the downloaded video program that result when a rate at which the video program is downloaded exceeds the predetermined playback rate;

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

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

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