This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations .(September 2018) |
Mobitex is an OSI based open standard, national public access wireless packet-switched data network. Mobitex puts great emphasis on safety and reliability with its use by military, police, firefighters and ambulance services. It was developed in the beginning of the 1980s by the Swedish Televerket Radio. From 1988, the development took place in Eritel, a joint-venture between Ericsson and Televerket, later on as an Ericsson subsidiary. Mobitex became operational in Sweden in 1986.
In the mid-1990s, Mobitex gained consumer popularity by providing two-way paging network services. It was the first wireless network to provide always on, wireless push email services such as RadioMail and Inter@ctive Paging. It is also used by the first model of Research in Motion's BlackBerry, and PDAs such as the Palm VII. During 9/11 and the 2005 hurricane rescue and clean-up operations, Mobitex proved itself to be a very reliable and useful system for first responders.
Mobitex is a packet-switched, narrowband, data-only technology mainly for short burst data. Mobitex channels are 12.5 kHz wide. In North America, Mobitex ran at 900 MHz, while in Europe it uses 400 - 450 MHz. The modulation scheme used is GMSK with a slotted aloha protocol at 8000 bit/s, although user throughput is typically around half of that.
The network provided the first public access wireless data communication services in North America. Subscriber services included electronic messaging with Cc capabilities to multiple recipients, combined with the ability to log on to any wireless or fixed terminal and receive stored mailbox messages.
Mobitex was offered on over 30 networks on five continents. European Mobitex networks almost completely withered in the shadow of the overwhelming success of GSM there in the early 1990s. In Canada, it was first introduced in 1990 by Rogers Cantel, and in 1991 by carrier RAM Mobile Data. In earlier days Mobitex networks in the US were marketed under several names, including RAM Mobile Data, BellSouth Wireless Data, Cingular Wireless and Velocita Wireless following several acquisitions and divestments. Since 2013 the network is operated by American Messaging Services, LLC (AMS) and remains operational.
Mobitex in the UK was marketed by RAM Mobile Data, the UK part of which was purchased from BellSouth (USA) by Twenty First Century Ltd (John Camilleri and Adrian Nicolle) in 2000, that became Transcomm and was then purchased by BT (British Telecom) in 2004. The uses of Mobitex in the United Kingdom were all emergencies (blue light) services, couriers, vehicle telematics (logistics), vending (parking) and vehicle breakdown services (RAC, AA, Green Flag).
All UK ambulance services used the network to dispatch crews and track progress. The London Metropolitan Police used Mobitex to access the police criminal record database whilst in field and in real time, revolutionary at the time. During the 7/7 terrorist attacks in London, the Transcomm Network was the only wireless network which kept running. Nearly all breakdowns to Green Flag UK service agents were sent using Turbo Dispatch, a Mobitex-based gateway software developed in the early nineties by Ian Lane and Andy Lambert. Despite the competitive nature of the vehicle recovery market in the UK, motoring organisations were persuaded to co-operate and make a standard of the format. This resulted in a major saving for the eight hundred independent garages used by the motoring organisations. The Turbo Dispatch Standards Group (the official keepers of the standard) estimated that at least twenty million breakdowns and recoveries were transmitted over Turbo Dispatch each year. BT subsidiary Transcomm announced the shutdown of the network in 2010.
In Sweden, the Mobitex network was finally shut down permanently on December 31, 2012 after 25 years.
As of 2020 [update] , Mobitex is mainly used in Belgium, the Netherlands (both RAM Mobile Data) (including network coverage of Luxembourg), Hong Kong (Telecom Digital Data Ltd), Canada (Rogers) and the US (AMS).
Cellular Digital Packet Data (CDPD) is an obsolete wide-area mobile data service which used unused bandwidth normally used by Advanced Mobile Phone System (AMPS) mobile phones between 800 and 900 MHz to transfer data. Speeds up to 19.2 kbit/s were possible, though real world speeds seldom reached higher than 9.6 kbit/s. The service was discontinued in conjunction with the retirement of the parent AMPS service; it has been functionally replaced by faster services such as 1xRTT, Evolution-Data Optimized, and UMTS/High Speed Packet Access (HSPA).
The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets. GSM is also a trade mark owned by the GSM Association. GSM may also refer to the Full Rate voice codec.
A personal communications service (PCS) is set of communications capabilities that provide a combination of terminal mobility, personal mobility, and service profile management. This class of services comprises several types of wireless voice or wireless data communications systems, typically incorporating digital technology, providing services similar to advanced cellular mobile or paging services. In addition, PCS can also be used to provide other wireless communications services, including services that allow people to place and receive communications while away from their home or office, as well as wireless communications to homes, office buildings and other fixed locations. Described in more commercial terms, PCS is a generation of wireless cellular-phone technology, that combines a range of features and services surpassing those available in analogue- and first-generation (2G) digital-cellular phone systems, providing a user with an all-in-one wireless phone, paging, messaging, and data service.
The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP, UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.
Bell Mobility Inc. is a Canadian wireless network operator and the division of Bell Canada which offers wireless services across Canada. It operates networks using LTE and HSPA+ on its mainstream networks. Bell Mobility is the third-largest wireless carrier in Canada, with 10.1 million subscribers as of Q3 2020.
4G is the fourth generation of broadband cellular network technology, succeeding 3G and preceding 5G. A 4G system must provide capabilities defined by ITU in IMT Advanced. Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television.
Rogers Wireless Inc. is a Canadian mobile network operator headquartered in Toronto, providing service nationally throughout Canada. It is a wholly owned subsidiary of Rogers Communications. The company had revenues of just under $15.1 billion in 2018. Rogers Wireless is the largest wireless carrier in Canada, with 13.7 million subscribers as of Q2 2023.
Mobile radio telephone systems were mobile telephony systems that preceded modern cellular network technology. Since they were the predecessors of the first generation of cellular telephones, these systems are sometimes retroactively referred to as pre-cellular systems. Technologies used in pre-cellular systems included the Push-to-talk, Mobile Telephone Service (MTS), Improved Mobile Telephone Service (IMTS), and Advanced Mobile Telephone System (AMTS) systems. These early mobile telephone systems can be distinguished from earlier closed radiotelephone systems in that they were available as a commercial service that was part of the public switched telephone network, with their own telephone numbers, rather than part of a closed network such as a police radio or taxi dispatching system.
The history of mobile phones covers mobile communication devices that connect wirelessly to the public switched telephone network.
The next-generation network (NGN) is a body of key architectural changes in telecommunication core and access networks. The general idea behind the NGN is that one network transports all information and services by encapsulating these into IP packets, similar to those used on the Internet. NGNs are commonly built around the Internet Protocol, and therefore the term all IP is also sometimes used to describe the transformation of formerly telephone-centric networks toward NGN.
Turbo Dispatch is a public domain standard for the electronic transfer of job details, initially using packet radio, but now also using the internet. It is used throughout the United Kingdom to pass the details of stranded motorists between all the major UK motoring organisations and their 400 plus vehicle recovery agents. In many cases it is also used by the vehicle recovery agent to pass the details to the attending recovery vehicle.
DataTAC is a wireless data network technology originally developed by Mobile Data International which was later acquired by Motorola, who jointly developed it with IBM and deployed in the United States as ARDIS. DataTAC was also marketed in the mid-1990s as MobileData by Telecom Australia, and is still used by Bell Mobility as a paging network in Canada. The first public open and mobile data network using MDI DataTAC was found in Hong Kong as Hutchison Mobile Data Limited, where public end-to-end data services are provided for enterprises, FedEx, and consumer mobile information services were also offered called MobileQuotes with financial information, news, telebetting and stock data.
E-UTRA is the air interface of 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) upgrade path for mobile networks. It is an acronym for Evolved UMTS Terrestrial Radio Access, also known as the Evolved Universal Terrestrial Radio Access in early drafts of the 3GPP LTE specification. E-UTRAN is the combination of E-UTRA, user equipment (UE), and a Node B.
Velocita Wireless is a national wireless-telecommunications service provider that is based in Woodbridge, New Jersey, United States. Known by several names over the years, Velocita Wireless has been in existence for over 17 years as the operator of the Mobitex network in the United States. Previously known as Cingular Interactive, L.P., BellSouth Wireless Data and prior to that RAM Mobile Data, Velocita Wireless carved a market for itself with the acquisition of the Mobitex network from Cingular and rebranding itself overall as Velocita in 2004.
Wireless Application Protocol (WAP) is a now obsolete technical standard for accessing information over a mobile cellular network. Introduced in 1999, WAP allowed at launch users with compatible mobile devices to browse content such as news, weather and sports scores provided by mobile network operators, specially designed for the limited capabilities of a mobile device. The Japanese i-mode system offered another major competing wireless data standard.
Vehicle recovery is the recovery of any vehicle to another place, generally speaking with a commercial vehicle known as a recovery vehicle, tow truck or spectacle lift.
LTE Advanced is a mobile communication standard and a major enhancement of the Long Term Evolution (LTE) standard. It was formally submitted as a candidate 4G to ITU-T in late 2009 as meeting the requirements of the IMT-Advanced standard, and was standardized by the 3rd Generation Partnership Project (3GPP) in March 2011 as 3GPP Release 10.
In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA standards. It improves on those standards' capacity and speed by using a different radio interface and core network improvements. LTE is the upgrade path for carriers with both GSM/UMTS networks and CDMA2000 networks. Because LTE frequencies and bands differ from country to country, only multi-band phones can use LTE in all countries where it is supported.
International Mobile Telecommunications-Advanced are the requirements issued by the ITU Radiocommunication Sector (ITU-R) of the International Telecommunication Union (ITU) in 2008 for what is marketed as 4G mobile phone and Internet access service.