Patent ID: 8315246
Filing Date: 2012-11-20
Classification: H04L,H04W

Abstract:
1. A system for enhancing functionality of a network, the system comprising: a network controller communicating with a mobile station seeking access to the network, the network comprising an Unlicensed Mobile Access (UMA) network, and the network controller being a UMA Controller (UNC); a security gateway in communication with the network controller via a first communications channel, the first communications channel being established after authentication of the mobile station for access to the network, wherein the network controller and the security gateway are separate physical modules; and a second communications channel to enable transfer of security information between the network controller and the security gateway, wherein the second communications channel involves an Authentication, Authorization, and Accounting (AAA) server, and wherein a first operation learns a mapping between an Internet protocol (IP) address and a first identifier associated with the mobile station, and wherein the mapping is stored for a subsequent comparison such that if a mismatch is detected between the mapping that is stored and a second identifier associated with the mobile station received a second operation is executed in which a disconnect packet is sent from the UNC to the AAA server, and wherein the security gateway is configured to validate an International Mobile Subscriber Identity (IMSI) of the mobile station and to forward an AAA start record to the AAA server for building an association relating the IP address of the mobile station and the IMSI of the mobile station with the AAA start record and the resulting association is returned to the UNC.