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Two-way HFC network based stream media service implementation method and device

A two-way network and implementation method technology, applied in two-way working systems, electrical components, transmission systems, etc., can solve the problems that the video-on-demand mode of the IP network is not fully applicable to the two-way HFC network, and the spectrum allocation is not effectively controlled. Effective control of spectrum resource utilization, bandwidth resource management, and reliable service

Inactive Publication Date: 2008-07-02
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0013] In the HFC network, although multiple users share a coaxial cable, the spectrum allocation for downlink transmission is not effectively controlled, resulting in the video-on-demand mode of the IP network not being fully applicable to the two-way HFC network

Method used

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  • Two-way HFC network based stream media service implementation method and device
  • Two-way HFC network based stream media service implementation method and device
  • Two-way HFC network based stream media service implementation method and device

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Embodiment Construction

[0025] When the embodiment of the present invention develops video-on-demand services on the HFC network, the interactive processing of video-on-demand is separated from the audio-video data streaming service, and the audio-video data is implemented using the MPEG-2TS specification, and video-on-demand is standardized through the RTSP protocol in the ISMA specification At the same time, in order to adapt to the asymmetric transmission limitations of the uplink and downlink of the HFC network, the uplink and downlink transmission of the RTCP control protocol can be separated, that is, the uplink is transmitted using a two-way channel, and the downlink is encapsulated in TS private data and transmitted using a broadcast channel, combined with RTCP The unique QoS information exchange function realizes the effective control of spectrum resource utilization.

[0026] In order to make the streaming media service based on the HFC two-way network have a complete on-demand solution, so ...

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Abstract

The invention provides a method for realizing streaming media service based on an HFC bidirectional network and a device thereof, which belongs to a transmission technology field of digital information. The method comprises the steps: interactive processing of video-on-demand and streaming service of audio-video data are separated; the audio-video data is realized by adopting an MPEG-2 TS specification; a RTSP protocol in an ISMA specification is introduced, thereby standardizing flow of the video-on-demand; uplink and downlink of a RTCP control protocol are separated which means that the uplink is transmitted by using a bidirectional channel and the downlink is encapsulated in private data of a TS and transmitted by using a broadcasting channel; and combination of QoS information communication function of the RTCP can realize effective monitor of utilization of spectrum resources, thus the video-on-demand service can be effectively developed in the HFC bidirectional network and reliable management of bandwidth can be realized, which supply the user with reliable service guarantee.

Description

technical field [0001] The invention relates to the technical field of digital information transmission, in particular to a method and equipment for realizing a streaming media service based on an HFC bidirectional network. Background technique [0002] Streaming media technology is the product of the development of network technology and multimedia technology to a certain stage. IPTV (Internet Protocol Television, referred to as Internet TV) is to use streaming media technology to transmit digital TV signals to users through broadband networks, so as to provide users with services including digital TV. A variety of interactive services in the network, the user terminal equipment can be a computer, or a TV+STB (television + set-top box). [0003] At present, IPTV provided by telecom operators operates on a manageable IP (Internet Protocol) network that supports multicast, and its main services are live TV, time-shifted TV, VOD (Video On Demand) and interactive information se...

Claims

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Application Information

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IPC IPC(8): H04N7/173H04L29/06H04N21/238H04N21/437H04N21/643
Inventor 王雷向伟周军吴刚朱明
Owner UNIV OF SCI & TECH OF CHINA
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