Patent ID: 8862124
Filing Date: 2014-10-14
Classification: H04W

Abstract:
1. A method of relocating co-located mobility anchor and anchor authenticator functionalities to a first access service network gateway (ASNGW) that is performing as a serving gateway from a second ASNGW that is serving as an anchor gateway in a communication network that includes mobile subscribers, the method comprising: receiving, at the first ASNGW, a relocation request from the second ASNGW including a dynamic host configuration protocol (DHCP) context and an authorization context associated with a mobile subscriber being relocated in an access service network (ASN); adding a dynamic host configuration protocol (DHCP) context to the first ASNGW to provide mobility anchor functionality for the mobile subscriber at the first ASNGW; sending, from the first ASNGW, a context report to update a WiMAX base station associated with the mobile subscriber that the first ASNGW is providing an anchor data path function (DPF) for the mobile subscriber; re-authenticating the mobile subscriber, at the first ASNGW, with the authorization context information received in the relocation request, wherein the re-authenticating includes sending an extensible authentication protocol (EAP) message and establishing a master session key (MSK) on the first ASNGW; adding an accounting context at the first ASNGW received from the second ASNGW; and establishing the first ASNGW as an anchor authenticator associated with the mobile subscriber.