Audio and video service on demand method applied to broadcast television network, system thereof and apparatus

Abstract

The invention discloses an audio and video service on demand method applied to a broadcast television network and a system thereof. A flow control channel is established between an on demand client (ODC) and a session manager (SM); when an abnormal accident occurs in on demand audio and video services, there is no need for participation of the ODC and an on demand resource manager (ODRM) directly closes session with a streaming server (SS); an SS' is selected again to carry out audio and video flow pushing process of the on demand audio and video services; the ODC sends a flow control request to the SM; the flow control request is sent to the reselected SS' through the ODRM; and the reselected SS' is used to complete the repushing of the on demand audio and video services. According to the invention, there is no need for participation during the whole implementation process of the method; and it is also unnecessary to close a session between an ODC and an SM, a session between the SM and an edge resource manager (ERM) and a session between the SM and the ODRM; therefore, time is saved; an occurrence of a blank screen phenomenon on the ODC will not accrue; and user experience is enhanced.

Description

technical field [0001] The invention relates to the integration technology of the three networks of the radio and television network, the Internet and the telecommunication network, in particular to an audio and video service on-demand method, system and device applied in the radio and television network. Background technique [0002] With the development of technology, the radio and television network, the Internet and the telecommunications network are gradually integrated, which is called the triple play technology. Integrating various network resources to form a unified radio and television network is a big challenge. In the integrated and unified radio and television network, audio and video data needs to be on-demand. In order to ensure the service and expansion of subsequent audio and video services, it is necessary to establish an open audio and video service on-demand system, such as figure 1 as shown, figure 1 It is a schematic structural diagram of an audio and ...

AI Technical Summary

Problems solved by technology

[0050] In the first case, because the flow control request sent by the ODC indicates the time shift of the audio and video data requested

[0051] In this case, the SM needs to modify the playlist of the ordered audio and video service. At this time, the ODC needs to take the lead to close the session established by the SM for the ODC, and then re-establish a new session. The process of closing the session and establishing a new session is very long. In the process of establishing a new session, ODC needs to re-establish an audio and video stream channel with the re-selected SS' through ED, that is, re-allocate the frequency point for playing audio and video data, and need to re-lock the frequency. At this time, it will cause ODC to black screen. poor user experience

[0052] In the second case, due to the abnormal situation of SS

In the process of establishing a new session, ODC needs to re-establish an audio and video stream channel with the re-selected SS' through ED, that is, re-allocate the frequency point for playing audio and video data, and need to re-lock the frequency. At this time, it will cause ODC to black screen. poor user experience

Images