3GPP 3rd Generation Partnership Project The 3rd Generation Partnership Project (3GPP) is a collaboration between groups of telecommunications associations, known as the Organizational Partners.
3GPP4G 3rd Generation Partnership Protocol 4th Generation 3GPP is a collaboration between groups of telecommunications associations
AAA Authentication and Authorization and Accounting It refers to a security architecture for distributed systems for controlling which users are allowed access to which services, and tracking which resources they have used.
API Application Programming Interface An API is a software intermediary that makes it possible for application programs to interact with each other and share data. It's often an implementation of REST that exposes a specific software functionality while protecting the rest of the application.
APN Access Point Name An Access Point Name (APN) is the name of a gateway between a GPRS, 3G or 4G mobile network and another computer network, frequently the public Internet. A mobile device making a data connection must be configured with an APN to present to the carrier.
BSC Base Station Controller
BTS Base Transceiver Station A base transceiver station (BTS) is a piece of equipment that facilitates wireless communication between user equipment (UE) and a network
CAMEL Customized Applications for Mobile Network Enhanced Logic CAMEL is a set of standards designed to work on either a GSM core network or UMTS network. They allow an operator to define services over and above standard GSM services/UMTS services. The CAMEL architecture is based on the Intelligent Network (IN) standards, and uses the CAP protocol.
CCR/A Credit Control Request/Answer CCR and CCA are Diameter message used to support Credit Control via Diameter.
CER/A Capabilities Exchange Request/Answer
Core IP Core Internet Protocol
DB Database A collection of organized data
DNS Domain Name System The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities.
DPR/A Disconnect Peer Request/Answer
DWR/A Device Watchdog Request/Answer
EAP-AKA Extensible Authentication Protocol-Authentication and Key Agreement Extensible Authentication Protocol Method for Universal Mobile Telecommunications System (UMTS) Authentication and Key Agreement (EAP-AKA), is an EAP mechanism for authentication and session key distribution using the UMTS Subscriber Identity Module (USIM).
EAPOL Extensible Authentication Protocol Over Local Area Network Extensible Authentication Protocol, or EAP, is an authentication framework frequently used in wireless networks and point-to-point connections
eNB/eNodeB Evolved Node B E-UTRAN Node B, also known as Evolved Node B, (abbreviated as eNodeB or eNB) is the element in E-UTRA of LTE that is the evolution of the element Node B in UTRA of UMTS. It is the hardware that is connected to the mobile phone network that communicates directly with mobile handsets (UEs), like a base transceiver station (BTS) in GSM networks.
eNodeB/eNodeB E-UTRAN Node B E-UTRAN Node B, also known as Evolved Node B, (abbreviated as eNodeB or eNB) is the element in E-UTRA of LTE that is the evolution of the element Node B in UTRA of UMTS. It is the hardware that is connected to the mobile phone network that communicates directly with mobile handsets (UEs), like a base transceiver station (BTS) in GSM networks.
EPC Evolved Packet Core The EPC will serves as the equivalent of GPRS networks (via the Mobility Management Entity, Serving Gateway and PDN Gateway subcomponents).
ePDG Evolved Packet Data Gateway The main function of the ePDG is to secure the data transmission with a UE connected to the EPC over an untrusted non-3GPP access. For this purpose, the ePDG acts as a termination node of IPsec tunnels established with the UE.
EUTRAN Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network It is a radio access network standard meant to be a replacement of the UMTS and HSDPA/HSUPA technologies specified in 3GPP releases 5 and beyond. Unlike HSPA, LTE's E-UTRA is an entirely new air interface system, unrelated to and incompatible with W-CDMA. It provides higher data rates, lower latency and is optimized for packet data. It uses OFDMA radio-access for the downlink and SC-FDMA on the uplink. Trials started in 2008.
FTP File Transfer Protocol The File Transfer Protocol (FTP) is a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet.
GGSN Gateway General Support Node The gateway GPRS support node (GGSN) is a main component of the GPRS network. The GGSN is responsible for the internetworking between the GPRS network and external packet switched networks, like the Internet and X.25 networks.
GMSC/PSTN Gateway Mobile Switching Center/Public Service Telephone Network The Gateway Mobile Switching Centre (GMSC) is a special kind of MSC that is used to route calls outside the mobile network. Whenever a call for a mobile subscriber comes from outside the mobile network, or the subscriber wants to make a call to somebody outside the mobile network the call is routed through the GMSC.
GPRS General Packet Radio Service General packet radio service (GPRS) is a packet oriented mobile data service on the 2G and 3G cellular communication system's global system for mobile communications (GSM).
GTP GPRS Tunnel Protocols GPRS Tunneling Protocol (GTP) is a group of IP-based communications protocols used to carry general packet radio service (GPRS) within GSM, UMTS and LTE networks. In 3GPP architectures, GTP and Proxy Mobile IPv6 based interfaces are specified on various interface points.
GTP-C GTP Control Signaling GTP-C is used within the GPRS core network for signaling between gateway GPRS support nodes (GGSN) and serving GPRS support nodes (SGSN). This allows the SGSN to activate a session on a user's behalf (PDP context activation), to deactivate the same session, to adjust quality of service parameters, or to update a session for a subscriber who has just arrived from another SGSN.
HLR Home Location Register The Home Location Register (HLR) is the main database of permanent subscriber information for a mobile network. The HLR is an integral component of CDMA (code division multiple access), TDMA (time division multiple access), and GSM (Global System for Mobile communications) networks
HSS Home Subscriber Server The Home Subscriber Server (HSS), or User Profile Server Function (UPSF), is a master user database that supports the IMS network entities that actually handle calls. It contains the subscription-related information (subscriber profiles), performs authentication and authorization of the user, and can provide information about the subscriber's location and IP information. It is similar to the GSM Home Location Register (HLR) and Authentication Centre (AuC).
HTTP Hypertext Transfer Protocol The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems. [ 1] HTTP is the foundation of data communication for the World Wide Web.
IMS-Aware IP Multimedia Subsystem Aware an architectural framework for delivering IP multimedia services. It was originally designed by the wireless standards body 3rd Generation Partnership Project (3GPP), as a part of the vision for evolving mobile networks beyond GSM. Its original formulation (3GPP Rel-5) represented an approach to delivering "Internet services" over GPRS. This vision was later updated by 3GPP, 3GPP2 and ETSI TISPAN by requiring support of networks other than GPRS, such as Wireless LAN, CDMA2000 and fixed lines.
LTE Long Term Evolution A standard for wireless communication of high-speed data for mobile phones and data terminals. It is based on the GSM/EDGE and UMTS/HSPA network technologies, increasing the capacity and speed using a different radio interface together with core network improvements.
M3UA MTP (Media Transfer Protocol) Level 3 User Adaptation Layer M3UA stands for MTP Level 3 (MTP3) User Adaptation Layer as defined by the IETF SIGTRAN working group in RFC 4666 (which replaces and supersedes RFC 3332). M3UA enables the SS7 protocol's User Parts (e.g. ISUP, SCCP and TUP) to run over IP instead of telephony equipment like ISDN and PSTN.
MAG Mobile Access Gateway Mobile Access Point in 3GPP Trusted Access
MAG/AP Mobile Access Gateway/Access Point Mobile Access Point in 3GPP Trusted Access
MME Mobility Management Entity (3GPP) The MME is the key control-node for the LTE access-network. It is responsible for idle mode UE (User Equipment) paging and tagging procedure including retransmissions. It is involved in the bearer activation/deactivation process and is also responsible for choosing the SGW for a UE at the initial attach and at time of intra-LTE handover involving Core Network (CN) node relocation. It is responsible for authenticating the user (by interacting with the HSS).
MS Mobile Subscriber
MSC Mobile Switching Center The mobile switching centre, abbreviated as MSC Server or MSS, is a 2G core network element which controls the network switching subsystem elements. Alternatively or adaptively, MSS can be used in GSM networks as well, if the manufacturer has implemented support for GSM networks in the MSS.
NIC Network Interface Card A network interface card is a computer circuit board or card that is installed in a computer so that it can be connected to a network.
OCS Online Charging System Online charging system is a system allowing a Communications service provider to charge their customers, in real time, based on service usage.
P-CSCF Proxy Call Session Control Function Several roles of SIP servers or proxies, collectively called Call Session Control Function (CSCF), are used to process SIP signalling packets in the IMS. A Proxy-CSCF (P-CSCF) is a SIP proxy that is the first point of contact for the IMS terminal.
PCRF Policy and Charging Rules Function Policy and Charging Rules Function is the software node designated in real-time to determine policy rules in a multimedia network.
PDN GW Packet Data Network Gateway Gateway used by core networks to access the Internet
PE Protocol Engine Protocol Engine is an all-in-one telecommunications test platform offering hassle-free load testing, conformance testing and simulation across a broad range of protocols and interfaces.
PGW PDN (Packet Data Network) Gateway Gateway used by core networks to access the Internet
QA Quality Assurance Quality Assurance (QA) is a way of preventing mistakes or defects in manufactured products and avoiding problems when delivering solutions or services to customers
QoS Quality of Service Quality of service (QoS) is the overall performance of a telephony or computer network, particularly the performance seen by the users of the network.
RF Radio Frequency Radio frequency (RF) is a rate of oscillation in the range of around 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals. RF usually refers to electrical rather than mechanical oscillations; however, mechanical RF systems do exist (see mechanical filter and RF MEMS).
RNC Radio Network Controller The Radio Network Controller (or RNC) is a governing element in the UMTS radio access network (UTRAN) and is responsible for controlling the Node Bs that are connected to it.
RRC Radio Resource Control (3G) The Radio Resource Control (RRC) protocol belongs to the UMTS WCDMA protocol stack and handles the control plane signalling of Layer 3 between the UEs (User Equipment) and the UTRAN.
S-CSCF Serving Call Session Control Function
SCTP Stream Control Transport Protocol In computer networking, the Stream Control Transmission Protocol (SCTP) is a transport layer protocol (protocol number 132), serving in a similar role to the popular protocols Transmission Control Protocol (TCP) and User Datagram Protocol (UDP).
SGSN Serving GPRS Support Node A serving GPRS support node (SGSN) is responsible for the delivery of data packets from and to the mobile stations within its geographical service area. Its tasks include packet routing and transfer, mobility management (attach/detach and location management), logical link management, and authentication and charging functions. The location register of the SGSN stores location information (e.g., current cell, current VLR) and user profiles (e.g., IMSI, address(es) used in the packet data network) of all GPRS users registered with it.
SGW Signaling Gateway A Signaling Gateway is a network component responsible for transferring signaling messages (i.e. information related to call establishment, billing, location, short messages, address conversion, and other services) between Common Channel Signaling (CCS) nodes that communicate using different protocols and transports.
SIP Session Initiation Protocol The Session Initiation Protocol (SIP) is a signaling communications protocol, widely used for controlling multimedia communication sessions such as voice and video calls over Internet Protocol (IP) networks.
SUT System Under Test System under test (SUT) refers to a system that is being tested for correct operation. The term is used mostly in software testing. A special case of a software system is an application which, when tested, is called an application under test.
TCP Transmission Control Protocol The Transmission Control Protocol (TCP) is one of the core protocols of the Internet protocol suite (IP), and is so common that the entire suite is often called TCP/IP.
UE User Equipment In the Universal Mobile Telecommunications System (UMTS) and 3GPP Long Term Evolution (LTE), user equipment (UE) is any device used directly by an end-user to communicate. It can be a hand-held telephone, a laptop computer equipped with a mobile broadband adapter, or any other device. It connects to the base station Node B/eNodeB as specified in the ETSI 125/136-series and 3GPP 25/36-series of specifications. It roughly corresponds to the mobile station (MS) in GSM systems.
UI User Interface the means by which the user and a computer system interact, in particular the use of input devices and software.
VLR Visitor Location Register The Visitor Location Register (VLR) is a database in a mobile communications network associated to a Mobile Switching Centre (MSC). The VLR contains the exact location of all mobile subscribers currently present in the service area of the MSC.
VoLTE Voice over Long Term Evolution Voice over long-term evolution (Voice over LTE/VoLTE) is a technology specification that defines the standards and procedures for delivering voice communication and data over 4G LTE networks. It is one method for creating, provisioning and managing high-speed voice, video and messaging services on a 4G wireless network for mobile and portable devices.
WebRTC Web Realtime Communications WebRTC (Web Real-Time Communication) is an API definition drafted by the World Wide Web Consortium (W3C) that supports browser-to-browser applications for voice calling, video chat, and P2P file sharing without plugins

Description source (in part): Wikipedia

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