Patent ID: 8085731

Claim:
A method for quality of service (QoS) parameters mapping during a handover from a first radio access network (RAN) to a second RAN, the first RAN and the second RAN having communication with an access point name (APN), comprising: deriving, for the second RAN, an APN aggregated maximum bit rate (APN-AMBR) for the APN based on a maximum bit rate (MBR) of a packet data protocol (PDP) context of the first RAN associated with the APN, the first RAN including one of a universal terrestrial radio access network (UTRAN) or a global system for mobiles (GSM) enhanced data for GSM evolution radio access network (GERAN) and the second RAN including an evolved universal terrestrial radio access network (E-UTRAN); providing a local user equipment (UE) aggregated maximum bit rate (UE-AMBR) until a subscribed UE-AMBR is available for the UE; acquiring the subscribed UE-AMBR; calculating a derived UE-AMBR by taking the minimum of the subscribed UE-AMBR and the sum of the derived APN-AMBRs of all APNs associated with the UE; comparing the derived UE-AMBR to the local UE-AMBR; and notifying the derived UE-AMBR to the second RAN by initiating a subscribed quality of service (QoS) modification procedure if the local UE-AMBR is different from the derived UE-AMBR.