Mobile telephony standards

0G refers to pre-cellular mobile telephony technology. These mobile telephones were usually mounted in cars or trucks, though briefcase models were also made. Typically, the transceiver (transmitter-receiver) was mounted in the vehicle trunk and attached to the "head" (dial, display, and handset) mounted near the driver seat. ...more on Wikipedia about "0G"

1G (or 1-G) is short for first-generation wireless telephone technology, cellphones. These are the analog cellphone standards that were introduced in the 80s and continued until being replaced by 2G digital cellphones. ...more on Wikipedia about "1G"

2.5G is a stepping stone between 2G and 3G cellular wireless technologies. The term "second and a half generation" is used to describe 2G-systems that have implemented a packet switched domain in addition to the circuit switched domain. It does not necessarily provide faster services because bundling of timeslots is used for circuit switched data services (HSCSD) as well. ...more on Wikipedia about "2.5G"

A 2G mobile phone is a circuit switched digital mobile phone. A 3G mobile is a digital phone with rapid data according to one of the standards being a member of the IMT-2000 family of standards. After those terms were defined, slow packet switched data was added to 2G standards and called 2.5G. 2.75G is the term which has been decided on for systems which don't meet the 3G requirements but are marketed as if they do (e.g. CDMA-2000 without multi-carrier) or which do, just, meet the requirements but aren't strongly marketed as such. (e.g. EDGE systems). ...more on Wikipedia about "2.75G"

2G (or 2-G) is short for second-generation wireless telephone technology. ...more on Wikipedia about "2G"

3G (or 3-G) is short for third-generation mobile telephone technology. The services associated with 3G provide the ability to transfer both voice data (a telephone call) and non-voice data (such as downloading information, exchanging email, and instant messaging). ...more on Wikipedia about "3G"

The 3rd Generation Partnership Project (3GPP) is a collaboration agreement that was established in December 1998. It's a co-operation between ETSI (Europe), ARIB/TTC ( Japan), CCSA ( China), ATIS (North America) and TTA ( South Korea). ...more on Wikipedia about "3GPP"

The 3rd Generation Partnership Project 2 (3GPP2) is a collaboration agreement that was established in December 1998. It's a co-operation between ARIB/TTC (Japan), CCSA (China), TIA (North America) and TTA (South Korea). ...more on Wikipedia about "3rd Generation Partnership Project 2"

4G (or 4-G) is short for fourth-generation the successor of 3G and is a wireless access technology. It describes two different but overlapping ideas. The IEEE ( Institute of Electrical and Electronics Engineers) official name for 4G is "3G and beyond". ...more on Wikipedia about "4G"

Advanced Mobile Phone System or AMPS is the analog mobile phone system standard developed by Bell Labs, and officially introduced in the Americas in 1984. Though analog is no longer considered advanced at all, the relatively seamless cellular switching technology AMPS introduced was what made the original mobile radiotelephone practical, and was considered quite advanced at the time. ...more on Wikipedia about "Advanced Mobile Phone System"

The Advanced Mobile Telephone System (not to be confused with Advanced Mobile Phone System) was a 0G method of radio communication, mainly used in Japanese portable radio systems. It, like its successor HCMTS, operated on the 900 MHz band. ...more on Wikipedia about "Advanced Mobile Telephone System"

The Basic Exchange Telephone Radio Service or BETRS is a fixed radio service where a multiplexed, digital radio link is used as the last segment of the local loop to provide wireless telephone service to subscribers in remote areas. BETRS technology was developed in the mid-1980s and allows up to four subscribers to use a single radio channel pair, simultaneously, without interfering with one another. ...more on Wikipedia about "Basic Exchange Telephone Radio Service"

CDMA2000 is a family of 3G mobile telecommunications standards that use CDMA, a multiple access scheme for digital radio, to send voice, data, and signaling data (such as a dialed telephone number) between mobile telephones and cell sites. ...more on Wikipedia about "CDMA2000"

DataTac is a wireless data network technology originally developed by Motorola and deployed in the United States as the ARDIS network. It is an open standard for point to point wireless data communications, similar to Mobitex. Like Mobitex, it is mainly used in vertical market applications. One of the early DataTac devices was the Newton Messaging Card, a two-way pager connected to a PCMCIA card using the DataTac network. The original BlackBerry devices, the RIM 850 and 857 also used the DataTac network. ...more on Wikipedia about "DataTac" shortopedia, there's no better way.

IS-54 and IS-136 are second-generation ( 2G) mobile phone systems, known as Digital AMPS (D-AMPS). It is used throughout the Americas, particularly in the United States and Canada. D-AMPS is considered end-of-life, and existing networks are in the process of being replaced by GSM/ GPRS and CDMA2000 technologies. Although most often referred to as TDMA, this is an incorrect reference to the protocols. IS-54 and IS-136 do, however, use Time Division Multiple Access as an air interface. ...more on Wikipedia about "Digital AMPS"

Evolution-Data Only ( now called Evolution-Data Optimized ), abbreviated as EV-DO or 1xEV-DO and sometimes as EVDO, is a wireless radio broadband data standard adopted by many CDMA mobile phone service providers in Japan, Korea, Brazil, Israel, the United States, Australia, Canada, New Zealand, Venezuela, and Mexico. It is standardized by 3GPP2, as part of the CDMA2000 family of standards. 1xEV-DO is pronounced "Wun-Ex E-Vee-Dee-Oh." It is commonly referred in the industry as DO ("Dee-Oh"). ...more on Wikipedia about "Evolution Data Only"

FOMA, officially short for Freedom of Mobile Multimedia Access, is the brand name for the 3G services being offered by Japanese mobile phone operator NTT DoCoMo. ...more on Wikipedia about "FOMA"

General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. It is often described as " 2.5G", that is, a technology between the second ( 2G) and third ( 3G) generations of mobile telephony. It provides moderate speed data transfer, by using unused TDMA channels in the GSM network. Originally there was some thought to extend GPRS to cover other standards, but instead those networks are being converted to use the GSM standard, so that is the only kind of network where GPRS is in use. GPRS is integrated into GSM standards releases starting with Release 97 and onwards. First it was standardised by ETSI but now that effort has been handed onto the 3GPP. ...more on Wikipedia about "General Packet Radio Service"

The Global System for Mobile Communications (GSM) is the most popular standard for mobile phones in the world. GSM service is used by over 1.5 billion people across more than 210 countries and territories ** . The ubiquity of the GSM standard makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world. GSM differs significantly from its predecessors in that both signaling and speech channels are digital, which means that it is considered a second generation ( 2G) mobile phone system. This fact has also meant that data communication was built into the system from very early on. GSM is an open standard which is currently developed by the 3GPP. ...more on Wikipedia about "Global System for Mobile Communications"

Global System for Mobile Communications (GSM) standards define certain codes that (if implemented by the particular carrier) make it possible to query and set certain service parameters (e.g., type of Call Forwarding) from mobile devices (GSM cell phones). See ETSI TS 100 907 (3GPP/GSM TS 02.30) at: ...more on Wikipedia about "GSM codes for supplementary services"

High-Speed Downlink Packet Access or HSDPA is a new mobile telephony protocol. Also called 3.5G (or "3½G"). High Speed Downlink Packet Access is a packet-based data service with data transmission up to 8-10 Mbit/s (and 20 Mbit/s for MIMO systems) over a 5MHz bandwidth in W-CDMA downlink. HSDPA implementation includes Adaptive Modulation and Coding (AMC), Multiple-Input Multiple-Output ( MIMO), Hybrid Automatic Repeat Request ( HARQ), fast scheduling, fast cell search, and advanced receiver design. ...more on Wikipedia about "High-Speed Downlink Packet Access"

HSUPA, High-Speed Uplink Packet Access, is a data access protocol for mobile phone networks with extremely high upload speeds up to 5.8 Mbit/s. Similar to HSDPA (High-Speed Downlink Packet Access), HSUPA is considered 3.75G or sometimes 4G. ...more on Wikipedia about "High-Speed Uplink Packet Access"

IMPS stands for Instant Messaging and Presence Service. ...more on Wikipedia about "IMPS"

Integrated Digital Enhanced Network, commonly referred to as iDEN, is a mobile communications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. Sprint Nextel is the largest US retailer of iDEN services. iDEN places more users in a given spectral space, compared to analog cellular systems, by using time division multiple access (TDMA). Up to six communication channels share a 25 kHz space; some competing technologies place only one channel in 12.5 kHz. ...more on Wikipedia about "Integrated Digital Enhanced Network"

The IP Multimedia Subsystem (IMS) is a standardised Next Generation Networking (NGN) architecture for telecom operators that want to provide mobile and fixed multimedia services. It uses a Voice-over-IP (VoIP) implementation based on a 3GPP standardised implementation of SIP, and runs over the standard Internet Protocol (IP). Existing phone systems (both packet-switched and circuit-switched) are supported. ...more on Wikipedia about "IP Multimedia Subsystem"

Be happy with www.shortopedia.com

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from the Shortopedia article about "Mobile telephony standards".

MAIN PAGE MAIN INDEX CONTACT US