Patent ID: 9503885
Filing Date: 2016-11-22
CPC Classification: H04L,H04W

Claim Text:
1. An application server configured to provide a third-party service to a subscriber of an IP Connectivity Access Network, IP-CAN, comprising: a first receiver configured to receive a service request message from the subscriber, the service request message requesting access to the third-party service; a processor configured to obtain a source IP address and source port number from the service request message, and to generate an identity request message including the source IP address and source port number, the identity request message requesting a subscriber identifier associated with the source IP address and source port number; a transmitter configured to send the identity request message to a node of the IP-CAN; and a second receiver configured to receive an identity response from the node of the IP-CAN, the identity response including a subscriber identifier that the IP-CAN associates with the subscriber, wherein the subscriber identifier is based on an internal IP address and an internal port number allocated to the subscriber within the IP-CAN.