Ultra Mobile Broadband is the brand name to describe the advanced technologies and services that will be supported by the CDMA2000 1xEV-DO Revision C (Rev. C) standard, which is expected to be published in 2007. 0G refers to pre-cellular mobile telephony technology. ... Push-to-Talk (PTT), also known as Press-to-Transmit, is a method of conversing on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode. ... The Mobile Telephone System (MTS) was one of the earliest mobile telephone standards. ... The Improved Mobile Telephone Service (IMTS) is a pre-cellular VHF/UHF radio system that links to the PSTN. IMTS was the radiotelephone equivalent of land dial phone service. ... The Advanced Mobile Telephone System was a 0G method of radio communication, mainly used in Japanese portable radio systems. ... OLT (Norwegian for Offentlig Landmobil Telefoni, Public Land Mobile Telephony), was the first land mobile telephone network in Norway. ... MTD (Swedish abbreviation for Mobilelefonisystem D, or Mobile telephony system D) was a manual mobile phone system for the 450 MHz frequency band. ... 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 MobilTelefoni or Nordiska MobilTelefoni-gruppen, Nordic Mobile Telephone in English) is a mobile phone system that was specified by the Nordic telecommunications administrations (PTTs) starting in 1970, and opened for service in 1981 as a response to the increasing congestion... Advanced Mobile Phone System (AMPS) is the analog mobile phone system standard developed by Bell Labs, and officially introduced in the Americas in 1984. ... hicap is a mobile techonology which has a consumer interface with a wide variety of industry references. ... Cellular Digital Packet Data (CDPD) uses unused bandwidth normally used by AMPS mobile phones between 800 and 900 MHz to transfer data. ... Cingular Interactive Truck at Ground Zero on 9/11/2001 Mobitex Network Design Mobitex is an OSI based open standard, national public access wireless data network first introduced in 1991 by carriers RAM Mobile Data and in Canada 1990 by Rogers Cantel. ... DataTac is a wireless data network technology originally developed by Motorola and deployed in the United States as the ARDIS network. ... 2G (or 2-G) is short for second-generation wireless telephone technology. ... The Global System for Mobile Communications, GSM (original acronym: Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. ... Iden is also a village in East Sussex, England iDEN Base Radio at a Cell Site Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. ... IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Personal Digital Cellular (PDC) is a 2G mobile phone standard developed and used exclusively in Japan. ... Circuit Switched Data, often known as CSD, is the original form of data transmission developed for the GSM mobile phone system. ... The Personal Handy-phone System (PHS), also marketed as the Personal Access System (PAS), is a mobile network system operating in the 1880-1930 MHz frequency band. ... [[General Packet Radio Services (GPRS)]] is a mobile data service avaiBold textlable to users of GSM and IS-136 mobile phones. ... High-Speed Circuit-Switched Data (HSCSD), is a development of Circuit Switched Data, the original data transmission mechanism of the GSM mobile phone system. ... Wideband Integrated Dispatch Enhanced Network, or WiDEN, is a software upgrade developed by Motorola for its iDEN enhanced specialized mobile radio (or ESMR) wireless telephony protocol. ... CDMA2000 is a family of third-generation (3G) mobile telecommunications standards that use CDMA, a multiple access scheme for digital radio, to send voice, data, and signalling data (such as a dialed telephone number) between mobile phones and cell sites. ... Enhanced Data rates for GSM Evolution (EDGE) or Enhanced GPRS (EGPRS), is a digital mobile phone technology that allows for increased data transmission rate and improved data transmission reliability. ... 3G (or 3-G) is short for third-generation 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, 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. ... UMTS-TDD is a mobile data network standard built upon the UMTS 3G cellular mobile phone standard, using a TD-CDMA air interface and Time Division Duplexing to duplex spectrum between the up-link and down-link. ... 1x Evolution-Data Optimized, abbreviated as EV-DO or 1xEV-DO and often EVDO, is a wireless radio broadband data standard adopted by many CDMA mobile phone service providers in United States, South Korea, Japan, the Czech Republic, Russia, Latvia, Romania, Portugal, Brazil, Israel, Australia, Canada, New Zealand, Venezuela, Angola... 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... The Generic Access Network (GAN), was formerly known as Unlicensed Mobile Access (UMA) until it was adopted by the 3GPP in April 2005. ... High-Speed Downlink Packet Access (HSDPA) (Sometimes known as High-Speed Downlink Protocol Access) is a 3G mobile telephony protocol in the HSPA family, which provides a smooth evolutionary path for UMTS-based networks allowing for higher data transfer speeds. ... High-Speed Uplink Packet Access (HSUPA) is a data access protocol for mobile phone networks with extremely high upload speeds up to 5. ... High Speed OFDM Packet Access (HSOPA) is part of 3gpps Long Term Evolution (LTE) upgrade path for 3G systems. ... 4G (or 4-G) is short for fourth-generation. ... Cellular frequencies - the general term which unites radio frequencies utilized by cellular networks to provide service to their subscribers. ... Personal Communications Service or PCS is the name for the 1900-MHz radio band used for digital mobile phone services in Canada and the United States. ... CDMA2000 is a family of third-generation (3G) mobile telecommunications standards that use CDMA, a multiple access scheme for digital radio, to send voice, data, and signalling data (such as a dialed telephone number) between mobile phones and cell sites. ...

The technology will deliver packets of data at peak speeds as much as 280 Mbps, and will do so within the entire cell edge coverage area. To provide the ubiquitous and universal access, UMB supports inter-technology handoff with existing CDMA2000 1X and 1xEV-DO systems.

UMB uses advanced antenna technologies, such as Multiple-input multiple-output communications (MIMO) and Space Division Multiple Access (SDMA), to provide larger capacity, improve the coverage, and quality in deployments with multiple antennas. Multiple-input multiple-output, or MIMO, is an abstract mathematical model for multi-antenna communication systems where the transmitter has multiple antennas capable of transmitting independent signals and the receiver is equipped with multiple receive antennas. ... SDMA or space-division multiple access is a channel access method which enables the use of the same frequency (for instance on GSM systems) at the same time in different spaces (cells). ...

External links

• 3GPP2 Standards and specifications