Method, equipment and system for switching business

Abstract

A service switching method, system, and device are provided. The method includes: receiving a control message for switching between a unicast service and a multicast service; and reusing access line resources of the multicast service when the multicast service is switched to the unicast service, or reusing access line resources of the unicast service when the unicast service is switched to the multicast service according to the control message.

Description

Technical field [0001] The present invention relates to the field of network technology, in particular to a method, system and equipment for service switching. Background technique [0002] In the prior art, a TSTV (Time-Shifted TV, time-shifted TV) implementation method is to display the stored TV programs in columns according to the preset program schedule of each channel on the client interface. After selecting a certain period of the TV program through EPG, the system quickly locates the corresponding media file time point for playback. The most conventional TSTV solution is to add buffering and video playback signaling processing capabilities on a BTV (Broadcast TV) server. [0003] Currently, TSTV services are closely related to BTV services, and video streams occupy a large amount of network bandwidth. Especially on access lines, the average access bandwidth of a typical ADSL access line is 6-8M, and an MPEG2 encoded video stream usually occupies a bandwidth of more than 4...

AI Technical Summary

Problems solved by technology

Therefore, when the user switches from a BTV channel program to the time-shift mode, it may occur that the unicast bandwidth needs to be allocated before the bandwidth occupied by the multicast has not been released, resulting in insufficient bandwidth.

On the network above the access node, since TSTV programs are in unicast form, while original BTV programs are in multicast form, when users switch from a BTV channel to time-shift mode, new unicast resources need to be allocated. When the bandwidth occupied by multicast is not released, unicast bandwidth needs to be allocated, resulting in insufficient bandwidth, which puts forward new requirements for resource allocation

[0004] The solution in the prior art uses the unicast and multicast architecture of the original NGN (Next Generation Network, next-generation network), and when switching from the BTV service to the TSTV service, the BTV service is suspended and its resources are released, and then the TSTV service is applied for The resources of the business make the originally related BTV and TSTV services separated and processed, which greatly slows down the switching speed and reduces the user experience; in addition, re-applying for TSTV resources may occur because the resources have been occupied by other services. Failure to receive resources will directly result in the inability to provide time-shift services

When switching from TSTV service to BTV service, there is also a similar process of releasing resources first and then applying, which will also slow down the switching speed

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