Patent ID: 7539171

Claim:
In a radio access network (RAN), a method for transmitting at least one packet data session parameter from a packet data serving node (PDSN) to a packet control function (PCF), the RAN including a base station (BS), the method comprising: establishing a dormant/active session from a mobile station (MS) to the PDSN through the RAN and the PCF; obtaining by the PDSN for the at least one packet data service, the least one packet data session parameter; transferring by the PDSN a session update message including the at least one packet data session parameter to the PCF without loss of a link between the packet data serving node and the radio access network; determining by the BS that a handoff is required; and sending by the BS a handoff required message including the at least one packet data session parameter for each packet data service supported by the MS to a mobile switching center (MSC).