Patent ID: 7852817
Filing Date: 2010-12-14
Classification: H04W

Abstract:
1. A communication system comprising: a) a first communication system comprising a licensed radio access network and a core network comprising a serving general packet radio service (GPRS) support node (SGSN) and a gateway GPRS support node (GGSN) communicatively coupled to the SGSN, wherein the SGSN comprises: b) a second generic access network (GAN) comprising a generic access network controller (GANC), wherein the GANC is communicatively coupled to the SGSN of the first communication system through a universal mobile telecommunication system (UMTS) terrestrial radio access network (UTRAN) Iu interface; and c) a user equipment (UE), wherein the GANC comprises: wherein the UE comprises: wherein the UDP protocol layer of the GANC is communicatively coupled to the UDP protocol layer of the UE, wherein the GTP-U protocol layer of the GANC is communicatively coupled to the GTP-U protocol layer of the UE, wherein the GTP-U protocol layer of the GANC is directly coupled to the GTP-U protocol layer of the SGSN, wherein the remote IP layer of the GANC is communicatively coupled to the remote IP layer of the UE, wherein the IPSec layer of the GANC is communicatively coupled to the IPSec layer of the UE, and wherein the direct coupling of the GTP-U protocol layer of the GANC to the GTP-U protocol layer of the SGSN avoids going through the GGSN.