Patent ID: 8688814

Claim:
A method of notifying user equipment, UE, accessing an IP Connectivity Access Network (IP-CAN) of network resource restrictions, wherein the IP-CAN authorizes and controls the provision of network services to the UE, the method comprising: during establishment of a session between the UE and the IP-CAN, receiving an IP-CAN Session Establishment Request at a Policy Charging and Enforcement Function (PCEF) in the IP-CAN, from the UE; in response to receipt of said Request, sending a request for IP.CAN restriction information, from said PCEF to a Policy and Charging Rules Function (PCRF) and receiving in response, at the PCEF, resource restriction information applicable to the provision of network services involving the UE; sending an IP-CAN Session Establishment Response from the PCEF to the UE that includes said resource restriction information applicable to the provision of network services involving the UE for the session; and storing said resource restriction information at the UE; notifying the UE of up-dated resource restrictions in an IP-CAN session modification request initiated by the IP-CAN or in a response to an IP-CAN session modification request initiated by the UE.