A method, device and system admission control unicast / multicast

摘要

A method of admission control AC, Unicast, comprising: receiving, by a subsystem resource and admission RACS (14), a request message service resource from an application function, AF ( 13) and performing an AC operation on the resources; forwarding a message of positive demand unicast service resources, if resources are sufficient; allocating, by the RACS (14) in accordance with resource request resources from an access node, AN (12) and authorizing the node AN to manage resources; characterized in that sending, by the RACS (14), a forced release message multicast resource node AN (12), if there are insufficient resources; canceling, by the RACS (14); a right management resources authorized multicast node AN; and performing the operation of AC again in accordance with a response message forced release of resources forwarded multicast and sending a response message resource demand unicast services corresponding to AF (13) .