Patent ID: RE44243

Claim:
A method for processing a signal and a bearer separately in an ALL IP network system including one or more mobile stations, one or more radio networks and one or more core networks, the method comprising the steps of: a) transmitting a service request message from a mobile station to a radio network; b) at the radio network, determining whether a circuit related service or a packet-related service is requested; c) if the circuit related service is requested: (i) transmitting a connection management (CM) service request message to a mobile switching center (MSC) server; (ii) receiving a service request acknowledgement message from the MSC server; and (iii) assigning a bearer in response to the service request acknowledgement message; and d) if the packet-related service is requested: (i) transmitting the service request message from the radio network to a core network without processing the service request message; (ii) at the core network, processing the service request message and transmitting an assignment request to the radio network, the assignment request requesting that the radio network assign a bearer for user data; and (iii) assigning the bearer in response to the assignment request.