in conjunction with APRICOT 2013

List of terms (source: Wikipedia and IETF)

Access Point Name (APN) - The name of a gateway between General Packet Radio Service (GPRS) (or 3G, LTE etc.) mobile network and another computer network, e.g., the Internet.
- A mobile device making a data connection must be configured with and APN to present to the carrier.
- The APN identifies the Packet Data Network (PDN) that a mobile data user wants to communicate with. (

Gateway GPRS Support Node (GGSN) The Gateway GPRS Support Node (GGSN) is a main component of the GPRS network. The GGSN is responsible for the internet working between GPRS network and external packet switched networks like the Internet. (

General Packet Radio Service (GPRS) core network The General Packet Radio Service (GPRS) core network is the central part of the GPRS which allows 2G, 3G and WCDMA mobile networks to transmit IP packets to external networks such as the Internet.(

IP Multimedia Subsystem (IMS) IP Multimedia Subsystem (IMS) is an architectural framework for delivering IP multimedia services.(

Packet Data Network Gateway (PGW) - The PDN Gateway (PGW) provides connectivity from the UE to external packet data networks by being the point of exist and entry of traffic for the UE.
- A UE may have simultaneous connectivity with more than one PGW for accessing multiple PDNs. (

PDN Connection - A PDN Connection is an association between and UE and a PDN, represented by one IPv4 address and/or one /64 IPv6 prefix
- A PDN is identified by an APN and a PDN is accessed by a PGW
- A PDN is responsible for the IP address/prefix management
- On an UE a PDN Connection is equivalent (or visible o an iP stack) as a virtual network interface (

User Equipment (UE) - In the Universal Mobile Telecommunication System (UMTS) and 3GPP Long Term Evolution (LTE), UE is any device used directly by and end-user to communicate.
- It can be a hand-held telephone, a laptop computer equipped with a mobile broadband adapter, or any other device. (