Method for optimizing quality of service of stream media

A quality of service and streaming media technology, applied in the field of multi-path routing and forwarding, can solve problems such as many achievements, and achieve the effect of improving the QoS of streaming media services

Inactive Publication Date: 2011-04-06
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, streaming media QoS technology for end-to-end streaming media and streaming media codec technology is the main direction to solve network congestion and improve streaming media QoS. There are many research results on the above two aspects.

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  • Method for optimizing quality of service of stream media
  • Method for optimizing quality of service of stream media

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] The present invention proposes an MPSMT (Multi-Path based Streaming Media Transferring) algorithm that utilizes cognitive network characteristics to form multi-path routing and transmit multi-code layer streaming media in parallel after conducting in-depth research on the existing congestion control technology for improving streaming media service quality. To ensure the end-to-end service quality of the streaming media business. The mechanism of the present invention aims to optimize the end-to-end transmission problem of streaming media, and proposes related algorithms for two aspects of streaming media encoding and decoding technology and end-to-end streaming media technology under the cognitive network environment or improves the existing mechanism, and will A combination of two technologies.

[0035] In terms of streaming media coding technology, the presen...

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Abstract

The invention provides a method for optimizing the quality of service (QoS) of stream media, belonging to the technical field of network communication. The method is implemented mainly by respectively adopting an expandability hierarchical coding technique and a multipath routing parallel transmission method from a streaming media coding and decoding technique and the end-to-end transmission aspect. A media stream is divided into a base layer and enhancement layers including a plurality of code layers by layered coding; different priorities are given to different code layers, and the highest priority is given to the base layer; according to the characteristics of a cognitive network, the priority condition of each reachable path is reasonably judged by taking delayed data fed back to a source node by a terminal node as the basis; according to the corresponding relation of the code layers and paths which are formed according to the priority, an activation set formed by a plurality of paths is established; the parallel transmission is carried out on the data in each code layer by utilizing the valid paths, and the updating time of the activation set is controlled by adopting an AIMD (Additive Increase And Multiplicative Decrease) arithmetic. The invention has the advantage of shorter delay.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to a multi-path routing and forwarding method for optimizing streaming media service quality. Background technique [0002] Streaming media is the product of the intersection of multimedia and network technology. It means that the continuous media (video / audio) stream is compressed and encoded, and the data is packaged and then sent to the receiving device according to certain timing requirements. The received data is reassembled, decoded and played. Its main feature is that it is different from traditional multimedia files that need to be downloaded from the server to play, but to watch while downloading, and transmit digital media in the form of streaming, so that people can use multimedia files online. With the rapid development of the Internet, applications centered on streaming media technology, such as distance education, video conferencing, and vide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/725
Inventor 李丹丹张润彤齐为谷秀君尚小溥华蕊朱晓敏
Owner BEIJING JIAOTONG UNIV
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