A METHOD FOR RESOURCE REVOKING BASED ON THE RESOURCE ADMISSION CONTROL SUBSYSTEM AND THE NETWORK DEVICE THEREOF

摘要

A method for resource revoking based on the resource admission control subsystem, includes the following steps: the network attachment subsystem NASS or the resource control enforcement function RCEF entitatively triggers the event relating to the revoking of resource reservation to inform the access-resource and admission control function A-RACF entity; the A-RACF entity informs the service-based policy decision function SPDF entity to release the resource reservation;the SPDF entity informs the application function AF entity to revoke the resource reservation and when it is detected by the SPDF that the BGF entity has allocated the service resource to sessions, the BGF entity releases and withdraws the allocated service resource. A network device is also provided.