Method, apparatus and system for controlling multicast admission

Abstract

The invention discloses a method for multicast admission control (AC) which can allocate a multicast resource to a multicast service in advance. The method comprises the following steps: a network device receives a multicast request and carries out the multicast resource AC operation for the multicast request; and when the multicast resource is insufficient, the network device carries out the multicast copy according to the multicast request and labels the low priority to the corresponding multicast stream. The invention also discloses a system for the multicast admission control which comprises a network device. The network device comprises a multicast protocol processing module, a local resource admission control function module and a multicast copy module. The multicast AC method and the multicast AC system can ensure rapid switch of the multicast service channels, reduce the information interaction between the network device and the resource admission control function or subsystem(RACF or RACS) during the channel switching process, and reduce the complexity of the network device with the built-in local resource admission control function.

Description

technical field [0001] The present invention relates to communication technology, in particular to a multicast admission control (AC, AdmissionControl) method, device and system. Background technique [0002] For services that consume high bandwidth and do not allow packet loss, such as IPTV (Internet Protocol Television) video, the network bandwidth, especially the bandwidth of the user link is generally very limited. In order to ensure effective development of video services and service quality, resource management (RM, Resource Management) and AC functions must be deployed in the network. The resource admission control device that implements resource management and admission control functions can be a resource admission control system (RACS, Resource and Admission Control System) defined by ETSI TISPAN, or a resource admission control function (RACF, Resource and Admission Control System) defined by ITU-T. Function), or other devices or functional components of devices t...

AI Technical Summary

Problems solved by technology

This solution needs to interact with the resource admission control device when switching multicast service channels, which takes a long time to switch and poor user experience

[0005] At the same time, the implementation of this solution is complex, and the multicast service is more frequently switched than the unicast service. When all users switch channels, the AN needs to report user channel switching information to the resource admission control equipment. Leading to a large amount of information interaction, the performance requirements of AN are very high

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