SYSTEM AND METHOD FOR CO-LOCATED EPDG AND PGW FUNCTIONS
A co-located ePDG and PGW system comprises an ePDG (Evolved Packet Data Gateway) functionality module, a PGW (Packet Data Network (PDN) Gateway) functionality module co-located with the ePDG functionality module, where the ePDG functionality module has an SWn interface configured for interfacing with an untrusted non-3GPP network, the ePDG functionality module has an interface toward the PGW functionality module configured for transporting control signaling data, and the ePDG functionality module has an S2b-U′ interface toward the PGW functionality module configured for transporting IP packet data.
1 . A co-located ePDG and PGW network node, comprising:
an ePDG (Evolved Packet Data Gateway) functionality module;
a PGW (Packet Data Network (PDN) Gateway) functionality module co-located with the ePDG functionality module;
wherein:
the ePDG functionality module having an SWn interface configured for interfacing with an untrusted non-3GPP network;
the ePDG functionality module having an interface toward the PGW functionality module configured for transporting control signaling data; and
the ePDG functionality module having an interface toward the PGW functionality module configured for transporting IP packet data without encapsulation.
2 . The co-located ePDG and PGW network node of claim 1 , wherein the ePDG functionality includes an S2b-C′ interface toward the PGW functionality module for transporting control plane data according to one of GPRS Tunneling Protocol-Control Plane (GTP-C) and Proxy Mobile IPv6 (PMIPv6) protocol.
3 . The co-located ePDG and PGW network node of claim 1 , wherein the ePDG functionality module further comprises a routing module configured to route IP packet data to the PGW functionality module or external entities.
4 . The co-located ePDG and PGW network node of claim 1 , further comprising an SGi interface toward an IMS Access Point Name (APN).
5 . The co-located ePDG and PGW network node of claim 1 , further comprising an SGi interface toward an Internet Access Point Name (APN).
6 . The co-located ePDG and PGW network node of claim 1 , wherein the SWn interface of the ePDG functionality module is configured to use the IP Security (IPSec) protocol to transport IP packets.
7 . The co-located ePDG and PGW network node of claim 1 , wherein the PGW functionality module comprises a routing module configured to receive IP packet on the SGi interface and route to the ePDG functionality module or external entities.
8 . The co-located ePDG and PGW network node of claim 1 , wherein the interface between the ePDG functionality module and the PGW functionality module is configured to use the IP protocol to transport IP packets without encapsulation.
9 . The co-located ePDG and PGW network node of claim 1 , wherein the PGW functionality module further includes one of S5 and S8 interface configured for interfacing with an external Serving Gateway (SGW) using one of GPRS Tunneling Protocol (GTP) and Proxy Mobile IPv6 (PMIPv6) protocol.
10 . The co-located ePDG and PGW network node of claim 1 , wherein the PGW functionality module further includes one of Gn and Gp interface configured for interfacing with an external Serving GPRS Support Node (SGSN) using GPRS Tunneling Protocol (GTP).
11 . The co-located ePDG and PGW network node of claim 1 , wherein the ePDG functionality module further includes an S2b interface configured for interfacing with an external PGW using one of GPRS Tunneling Protocol (GTP) and Proxy Mobile IPv6 (PMIPv6) protocol.
12 . A method for co-located ePDG and PGW functions, comprising:
receiving IPSec data at an SWn interface of an ePDG module;
extracting IP packet from the IPSec data; and
routing the extracted IP packet to an IP network via an SGi interface of a co-located PGW module without encapsulating the IP packet.
13 . The method for co-located ePDG and PGW functionality of claim 11 , further comprising:
receiving an IP packet at an SGi interface of a PGW module; and
routing the IP packet to a co-located ePDG module without encapsulating the IP packet.
14 . The method for co-located ePDG and PGW functionality of claim 11 , further comprising routing the extracted IP packet to one of a plurality of IP networks via the SGi interface.
15 . The method for co-located ePDG and PGW functionality of claim 12 , further comprising routing the IP packet to an external entity via an S2b interface of the ePDG according to one of GTP protocol and Proxy Mobile IPv6 (PMIPv6) protocol.
16 . The method for co-located ePDG and PGW functionality of claim 11 , further comprising encapsulating the extracted IP packet according to one of GPRS Tunneling Protocol (GTP) and Proxy Mobile IPv6 (PMIPv6) protocol at the ePDG module, and transporting the data via an S2b interface of the ePDG module to an external node.
17 . The method for co-located ePDG and PGW functionality of claim 11 , further comprising establishing an IPSec tunnel with a User Equipment at the ePDG module.
18 . A co-located integrated ePDG and PGW system, comprising:
an ePDG (Evolved Packet Data Gateway) module;
a PGW (Packet Data Network (PDN) Gateway) module co-located with the ePDG module;
wherein:
the ePDG module having an SWn interface configured for transporting IP Security (IPSec) tunnel data; and
the ePDG module and the co-located PGW module having an interface therebetween for transporting IP packets absent GTP or GRE encapsulation.
19 . The co-located integrated ePDG and PGW system of claim 20 , further comprising an S2b interface between the ePDG and PGW configured for transporting control signaling using one of GPRS Tunneling Protocol-Control Plane (GTP-C) and Proxy Mobile IPv6 (PMIPv6) data.
20 . The co-located integrated ePDG and PGW system of claim 20 , wherein the PGW module includes an SGi interface toward an Internet Access Point Name (APN).
21 . The co-located integrated ePDG and PGW system of claim 20 , wherein the PGW module further includes one of an S5 and S8 interface configured for interfacing with an external Serving Gateway (SGW) using one of GPRS Tunneling Protocol (GTP) and Proxy Mobile IPv6 (PMIPv6) protocol.
22 . The co-located integrated ePDG and PGW system of claim 20 , wherein the PGW module further includes one of a Gn and Gp interface configured for interfacing with an external Serving GPRS Support Node (SGSN) using one of GPRS Tunneling Protocol (GTP).
23 . The co-located integrated ePDG and PGW system of claim 20 , wherein the ePDG module further includes an S2b interface configured for interfacing with an external PGW using one of GPRS Tunneling Protocol (GTP) and Proxy Mobile IPv6 (PMIPv6) protocol.