METHOD AND SYSTEM FOR THE TRANSMISSION OF DIGITAL VIDEO OVER A WIRELESS NETWORK
First Claim
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1. An apparatus for adaptive transmission control of a video stream of a video application that includes a plurality of prioritized video packets having a plurality of priorities, the apparatus comprising:
- a transmission side (212) comprising a plurality of transmission buffers (220) for storing said plurality of prioritized video packets;
an adaptive transmission component (205) comprising a mechanism for selective transmission/dropping of video packets determined by a pre-determined fullness threshold of at least one of the plurality of transmission buffers (220); and
a reception component (207) to receive the transmitted plurality of video packets of the video stream.
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Abstract
An apparatus, system and method are provided for adaptive flow control of layered streaming video over wireless local area networks (WLANs). In one aspect prioritised and adaptive transmission mechanisms are provided based on buffer fullness and discarding visually less important packets so that future visually more important packets can reach the decoder in time. In another aspect, aggregated control is provided for all video applications as well as separate control for each video application.
69 Citations
40 Claims
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1. An apparatus for adaptive transmission control of a video stream of a video application that includes a plurality of prioritized video packets having a plurality of priorities, the apparatus comprising:
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a transmission side (212) comprising a plurality of transmission buffers (220) for storing said plurality of prioritized video packets; an adaptive transmission component (205) comprising a mechanism for selective transmission/dropping of video packets determined by a pre-determined fullness threshold of at least one of the plurality of transmission buffers (220); and a reception component (207) to receive the transmitted plurality of video packets of the video stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for adaptively controlling transmission of a video stream (204) of a video application that includes a plurality of prioritized video packet layers, comprising the steps of:
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providing a plurality of prioritized queues (220) wherein said priority comprises a highest and at least one lower priority corresponding to visually important data and visually less important data (100); enqueuing (403) (502) (603) (704) (806) each of the prioritized packets in a queue (220) having a same pre-assigned priority; dequeuing (405) (504) (606) (807) an enqueued packet for transmission based on a pre-determined prioritized queue fullness scheme (610) (703). - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification