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Methods and apparatus for power efficient broadcasting and communication systems

  • US 8,155,098 B2
  • Filed: 06/06/2006
  • Issued: 04/10/2012
  • Est. Priority Date: 06/09/2005
  • Status: Active Grant
First Claim
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1. A method of communication and broadcasting in a cellular communication network of base stations and mobile stations, the method comprising:

  • forming a plurality of frames of fixed time length, wherein each frame contains a plurality of time slots, and wherein each time slot contains a plurality of orthogonal frequency-division multiplexing (OFDM) symbols;

    forming a plurality of video frames and data frames in the plurality of frames, wherein;

    a video frame is a frame that contains air link resources used for broadcasting or multicasting content via a single frequency network (SFN), wherein the same broadcasting or multicasting content is transmitted by multiple base stations in multiple cells using OFDM and employing a same time and frequency resource; and

    a data frame is a frame that contains air link resources used for data unicasting without the use of a SFN;

    transmitting a video broadcasting stream in video bursts from a base station to a mobile station, wherein a video burst contains video frames carrying the content of the video broadcasting stream and data frames carrying unicasting data, and a video burst duration is substantially shorter than a time between two consecutive video bursts associated with the video broadcasting stream; and

    intermixing video frames and data frames within a video burst and configuring the video burst in accordance with a desired throughput or latency, wherein;

    the video burst configuration includes a number of video frames within the video burst, a number of data frames within the video burst, and an intermixing pattern of video frames and data frames;

    the video burst configuration is predetermined or reconfigurable in real-time; and

    the video burst configuration and scheduling information are announced to receiving mobile stations through a scheduling signal.

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