General Packet Radio Service

GPRSGSM GPRS(E)GPRSdata accessEDGEGeneral Packet Radio Service (GPRS)GPRS (2.5G)GPRS 2.5GGPRS 3+1GPRS Class 10
General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM).wikipedia
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3G

IMT-20003G networkIMT
General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM).
It is the upgrade for 2G and 2.5G GPRS networks, for faster data transfer speed.

Mobile broadband

mobile datadatamobile
General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM).

2G

2.5G2.75G2.5
General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM).
With General Packet Radio Service (GPRS), 2G offers a theoretical maximum transfer speed of 40 kbit/s.

GSM

Global System for Mobile CommunicationsGSM networkGSM (850/900/1800/1900)
General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM). The GPRS system is an integrated part of the GSM network switching subsystem.
This expanded over time to include data communications, first by circuit-switched transport, then by packet data transport via General Packet Radio Service (GPRS), and Enhanced Data Rates for GSM Evolution (EDGE).

Wireless Application Protocol

WAPWAP 2.0WAP browser
The APN defines the services such as wireless application protocol (WAP)
All the upper layers view WDP as one and the same protocol, which has several "technical realizations" on top of other "data bearers" such as SMS, USSD, etc. On native IP bearers such as GPRS, UMTS packet-radio service, or PPP on top of a circuit-switched data connection, WDP is in fact exactly UDP.

Access Point Name

Access Point Name (APN)APNAPNs
A GPRS connection is established by reference to its access point name (APN).
An Access Point Name (APN) is the name of a gateway between a GSM, GPRS, 3G or 4G mobile network and another computer network, frequently the public Internet.

Wireless Village

Yamigo was a free communications service, based in Finland, that allowed instant messaging on mobile phones over wireless data services such as GPRS.

Network switching subsystem

HLRHome Location RegisterMobile Switching Center
The GPRS system is an integrated part of the GSM network switching subsystem.

Circuit Switched Data

HSCSDCSDHigh-Speed Circuit-Switched Data
In addition to GPRS, there are two other GSM technologies which deliver data services: circuit-switched data (CSD) and high-speed circuit-switched data (HSCSD).
After 2010 many telecommunication carriers dropped support for CSD, and CSD has been superseded by GPRS and EDGE (E-GPRS).

3GPP

3rd Generation Partnership ProjectThird Generation Partnership Project (3GPP).3gpp
It is now maintained by the 3rd Generation Partnership Project (3GPP).

Enhanced Data Rates for GSM Evolution

EDGEEGPRSGSM EDGE
Some high end mobiles, usually also supporting UMTS, also support GPRS/EDGE multislot class 32.
Enhanced Data rates for GSM Evolution (EDGE) (also known as Enhanced GPRS (EGPRS), IMT Single Carrier (IMT-SC), or Enhanced Data rates for Global Evolution) is a digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM.

GPRS core network

SGSNGGSNServing GPRS Support Node
The GPRS core network is the central part of the general packet radio service (GPRS) which allows 2G, 3G and WCDMA mobile networks to transmit IP packets to external networks such as the Internet.

ALOHAnet

Slotted AlohaALOHAALOHA protocol
This means that slotted ALOHA (S-ALOHA) is used for reservation inquiries during a contention phase, and then the actual data is transferred using dynamic TDMA with first-come first-served.
In the early 2000s additional ALOHA channels were added to 2.5G and 3G mobile phones with the widespread introduction of GPRS, using a slotted-ALOHA random-access channel combined with a version of the Reservation ALOHA scheme first analyzed by a group at BBN.

Modem

modemsdial-up modem56k modem
The maximum speed of a GPRS connection offered in 2003 was similar to a modem connection in an analog wire telephone network, about 32–40 kbit/s, depending on the phone used.
Modems which use a mobile telephone system (GPRS, UMTS, HSPA, EVDO, WiMax, etc.), are known as mobile broadband modems (sometimes also called wireless modems).

IP Multimedia Subsystem

IMSHome Subscriber ServerHSS
Its original formulation (3GPP Rel-5) represented an approach for delivering Internet services over GPRS.

Puncturing

puncturedpuncturesymbol puncturing
In Coding Schemes CS-2 and CS-3, the output of the convolutional code is punctured to achieve the desired code rate.
It is also used in Wi-Fi, GPRS and EDGE, as well as in the DVB-T and DRM Standards.

SMS

Short Message Servicetext messagetext messages
access, short message service (SMS), multimedia messaging service (MMS), and for Internet communication services such as email and World Wide Web access.
SMS usage for these purposes is slowly being superseded by GPRS services owing to their lower overall cost.

Bernhard Walke

According to a study on history of GPRS development, Bernhard Walke and his student Peter Decker are the inventors of GPRS – the first system providing worldwide mobile Internet access.
In 1991 he proposed CELLPAC for packet switching in GSM which triggered development of ETSI standard GPRS.

Mobile broadband modem

wireless modemcellular routerUSB modem
In order to set up a GPRS connection for a wireless modem, a user must specify an APN, optionally a user name and password, and very rarely an IP address, provided by the network operator.

SNDCP

Sub-network dependent convergence protocol
SNDCP, Sub Network Dependent Convergence Protocol, is part of layer 3 of a GPRS protocol specification.

Channel access method

multiple accessmultiple access methodchannel access
The multiple access methods used in GSM with GPRS are based on frequency division duplex (FDD) and TDMA.

Reservation ALOHA

The down-link uses first-come first-served packet scheduling, while the up-link uses a scheme very similar to reservation ALOHA (R-ALOHA).

LTE (telecommunication)

LTE4G LTETD-LTE
Successor systems to GSM/GPRS like W-CDMA (UMTS) and LTE rely on key GPRS functions for mobile Internet access as introduced by CELLPAC.

Mobile phone

cell phonemobile phonesmobile
General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM).