METHOD AND NETWORK SYSTEM FOR ESTABLISHING SESSIONS IN MULTIMEDIA BROADCAST/MULTICAST SERVICE

摘要

A method for establishing sessions in Multimedia Broadcast/Multicast Service and a Multimedia Broadcast/Multicast Service network system, in which the method includes: sending the request message for establishing sessions to the receiving end; receiving the response message returned by the receiving end; if the returned response message shows a failure of establishing sessions caused by a resource is unusable, the request message for establishing sessions is resent to the receiving end from the sending end; or if the returned response message shows a failure of establishing sessions and the informing message showing that the resource is usable is received subsequently, the request message for establishing sessions is resent to the receiving end.