Enhanced Data rates for GSM Evolution (EDGE) is a digital mobile phone technology which acts as a bolt-on enhancement to 2G and 2.5G (a.k.a.GPRS) networks. This technology is working in TDMA and GSM networks. EDGE (also known as EGPRS) is a superset to GPRS and can function on any network with GPRS deployed on it (provided the carrier implements the necessary upgrades). 0G refers to pre-cellular mobile telephony technology. ... Push-To-Talk, commonly abbreviated as PTT, is a method of conversing on half-duplex communication lines, including two-way radio, by pushing a button in order to send, allowing voice communication to be transmitted from you, and releasing to let voice communication be received. ... Manual Tone Shift (MTS) was one of the earliest mobile telephone protocols. ... The Improved Mobile Telephone Service (IMTS) is a pre-cellular VHF/UHF radio system that links to the PSTN. IMTS had originally only sixteen channels and were prone to network congestion and interference by others keying up their radios while a converstaion was already occurring on a channel. ... The abbreviated mental test score (AMTS) was introduced by Hodkinson in 1972 to rapidly assess elderly patients for the possibility of dementia. ... Autotel (also called PALM, or Public Automated Land Mobile) is a radiotelephone service which was the missing link between earlier MTS/IMTS and later cellular telephone services. ... ARP (Autoradiopuhelin, Car Radio Phone in English) was the first commercially operated public mobile phone network in Finland. ... 1G (or 1-G) is short for first-generation wireless telephone technology, cellphones. ... For other meanings of the abbreviation, see: NMT. NMT (Nordisk MobilTelefon or Nordisk MobilTelefon-gruppen, Nordic Mobile Telephony in English) is a mobile phone system that was created in 1981 as a response to the increasing congestion and heavy requirements of the ARP mobile phone network. ... This article is about AMPS, the North American mobile phone system standard; AMPS is also an initialism for the All Media and Products Survey published by the South African Advertising Research Foundation. ... 2G (or 2-G) is short for second-generation wireless telephone technology. ... The Global System for Mobile Communications (GSM) is the most popular standard for mobile phones in the world. ... The title of this article is incorrect because of technical limitations. ... IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... Personal Digital Cellular (PDC) is a 2G mobile phone standard developed and used exclusively in Japan. ... 2. ... General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. ... CDMA2000 is a 3G mobile telecommunications standard that uses CDMA, a modulation scheme for digital radio, to send voice, data and signaling data (such as a dialed telephone number) between mobile telephones and cell sites. ... A 2G mobile phone is a circuit switched digital mobile phone. ... 3G (or 3-G) is short for third-generation mobile telephone technology. ... W-CDMA (Wideband Code Division Multiple Access) is a type of 3G cellular network. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... Foma is the name of a Czech Photographic film factory and trademark of its production( [[1]] ). Foma (with a stress on the second syllable) is a Russian form of the name Thomas. ... CDMA2000 is a 3G mobile telecommunications standard that uses CDMA, a modulation scheme for digital radio, to send voice, data and signaling data (such as a dialed telephone number) between mobile telephones and cell sites. ... TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is a 3G mobile telecommunications standard, being pursued in the Peoples Republic of China by the Chinese Academy of Telecommunications Technology (CATT), Datang and Siemens AG, in an attempt to develop home-grown technology and not be dependent on Western... High-Speed Downlink Packet Access or HSDPA is a mobile telephony protocol. ... High-Speed Downlink Packet Access or HSDPA is a mobile telephony protocol. ... This article describes the wireless access technology 4G. For the 4G IATA code see Shenzhen Airlines 4G (or 4-G) is short for fourth-generation the successor of 3G and is a wireless access technology. ... 2G (or 2-G) is short for second-generation wireless telephone technology. ... 2. ... General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. ... Time Division Multiple Access (TDMA) is a technology for shared medium (usually radio) networks. ... GSM (Global System for Mobile Communications) is the most popular standard for mobile phones in the world. ...

EDGE provides Enhanced GPRS (EGPRS), which can be used for any packet switched applications such as an Internet connection. High-speed data applications such as video services and other multimedia benefit from EGPRS' increased data capacity. In computer networking and telecommunications, packet switching is a communications paradigm in which packets (messages or fragments of messages) are individually routed between nodes, with no previously established communication path. ...

In addition to GMSK (Gaussian minimum-shift keying) EDGE uses 8PSK (8 Phase Shift Keying) for its upper five of the nine modulation and coding schemes. EDGE is producing a 3bit word for every change in carrier phase. This effectively triples the gross data rate offered by GSM. EDGE, like GPRS, uses a rate adaptation algorithm that adapts the modulation and coding scheme (MCS) used to the quality of the radio channel, and thus the bit rate and robustness of data transmission. It introduces a new technology not found in GPRS, Incremental Redundancy, which, instead of retransmitting disturbed packets, sends more redundancy information to be combined in the receiver. This increases the probability of correct decoding. Gaussian minimum shift keying or GMSK is a kind of continuous phase modulation. ... In telecommunication, the term phase-shift keying (PSK) has the following meanings: In digital transmission, angle modulation in which the phase of the carrier is discretely varied in relation either to a reference phase or to the phase of the immediately preceding signal element, in accordance with data being transmitted. ... General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. ...

It can carry data speeds up to 384 kbit/s in packet mode and will therefore meet the International Telecommunications Union's requirement for a 3G network, and has been accepted by the ITU as part of the IMT-2000 family of 3G standards. It also enhances the circuit data mode called HSCSD, increasing the data rate of this service also. EDGE is being introduced into GSM networks around the world in 2003, initially in North America. The International Telecommunication Union (ITU) is an international organization established to standardize and regulate international radio and telecommunications. ... 3G (or 3-G) is short for third-generation mobile telephone technology. ... IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation (3G) wireless communications as defined by the International Telecommunication Union. ... High-Speed Circuit-Switched Data (HSCSD), is a development of Circuit Switched Data, the original data transmission mechanism of the GSM mobile phone system. ...

As of 2004, EDGE is more actively supported by GSM operators in North America than anywhere else in the world because GSM/GPRS has a strong competitor: CDMA2000. Most other GSM operators view UMTS as the ultimate upgrade path and either plan to skip EDGE altogether or use it outside the UMTS coverage area. However, the high cost and slow uptake of UMTS (as demonstrated by the upstart network 3) have made some western European GSM operators reevaluate EDGE as an interim upgrade. 2004 is a leap year starting on Thursday of the Gregorian calendar. ... CDMA2000 is a 3G mobile telecommunications standard that uses CDMA, a modulation scheme for digital radio, to send voice, data and signaling data (such as a dialed telephone number) between mobile telephones and cell sites. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... 3 is the name of a mobile phone operator in Europe, Australia, and Hong Kong, by Hutchison Whampoa Telecommunications. ...

Although EDGE requires no hardware changes to be made in GSM core networks, base stations must be modified. An EDGE compatible tranceiver unit must be installed and base station system needs to be upgraded to support EDGE. New mobile terminal hardware and software is also required to decode/encode using the new shift keying scheme. GSM (Global System for Mobile Communications) is the most popular standard for mobile phones in the world. ...

The status of EDGE as to if it is 2G or 3G depends on implementation. While Class 3 and below EDGE devices clearly are not 3G, class 4 and above devices perform at a higher bandwidth than other technologies conventionally considered as 3G (such as 1xRTT). With a maximum bandwidth of 230k at Class 10, EDGE transcends both common 2G and 3G definitions.

See also: UMTS Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ...

External links

• GSM World: EDGE Platform
• 3g-generation.com: GPRS and EDGE
• Ericsson.com: EDGE Description (PDF file)