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Index UMTS

The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. [1]

171 relations: Abbreviation, Air interface, Apple Inc., AT&T Mobility, Australia, Backbone network, Base station, Beamforming, Bharat Sanchar Nigam Limited, Bit rate, Bluetooth, Canada, CDMA2000, CdmaOne, Celcom, Cellular frequencies, Channel access method, China Mobile, China Netcom, China Telecom, Circuit Switched Data, Code-division multiple access, Common pilot channel, Comparison of wireless data standards, Coverage (telecommunication), Cross-licensing, Cycle per second, Data-rate units, Datang Telecom Group, Deutsche Telekom, Digital Enhanced Cordless Telecommunications, Direct-sequence spread spectrum, Dual mode mobile, Duplex (telecommunications), Enhanced Data Rates for GSM Evolution, ETSI, European Conference of Postal and Telecommunications Administrations, Evolution-Data Optimized, Evolved High Speed Packet Access, Finland, Freedom Mobile, Freedom of Mobile Multimedia Access, Frequency band, General Packet Radio Service, Generic Access Network, GERAN, Germany, GPRS core network, GSM, Hertz, ..., High Speed Packet Access, HiperMAN, Huawei SingleRAN, Hutchison Whampoa, Installation (computer programs), Integrated Services Digital Network, Interference (communication), International Telecommunication Union, Internet, IP Multimedia Subsystem, IPhone, IPhone 4, IPv6, Japan, KPN, KTF, List of interface bit rates, List of UMTS networks, LTE (telecommunication), M1 Limited, Malaysia, Maxis Communications, MIMO, Ministry of Industry and Information Technology, Mobile Application Part, Mobile broadband modem, Mobile phone, Mobile telephony, Mobile User Objective System, Mobilicity, Multi-band device, Multimedia Messaging Service, Multiuser detection, Network switching subsystem, New York City, New Zealand, Nextel Communications, NodeB, Nokia E7-00, Nokia N8, Non-access stratum, Norway, NTT DoCoMo, ODMA, Ofcom, Online and offline, Operations and Maintenance Centre, Opportunity Driven Multiple Access, Optus, Orthogonal frequency-division multiplexing, OSI model, Patent, PDCP, Personal Communications Service, Personal digital assistant, Personal Handy-phone System, Power control, Pseudorandom number generator, Qualcomm, Radio access network, Radio Bearer in UMTS, Radio Link Control, Radio Network Controller, Radio Resource Control, Radio resource management, Radio spectrum, Roaming, Service data unit, Siemens, Signalling System No. 7, Singapore, SK Telecom, SoftBank Group, South Korea, Spark New Zealand, Spark New Zealand Mobile, Spread spectrum, Standardization, Standardization Administration of China, Subscriber identity module, Sweden, Synchronous CDMA, T-Mobile US, Tablet computer, Tandem Free Operation, Telecommunications in China, Telecommunications industry in China, Telecommunications link, Telefónica, Telenor, Telia Company, Telia Norge, Telstra, Time-division multiple access, Time-division multiplexing, UMTS, UMTS channels, UMTS frequency bands, UMTS security, UMTS Terrestrial Radio Access Network, USB, User equipment, Vertical handover, Vidéotron, Video on demand, Videotelephony, Vodafone, Vodafone (Australia), Wi-Fi, WiMAX, Wireless access point, Wireless ad hoc network, Wireless LAN, ZDNet, 1G, 2G, 3 (telecommunications), 3G, 3GPP, 3rd Generation Partnership Project 2, 4G. Expand index (121 more) »


An abbreviation (from Latin brevis, meaning short) is a shortened form of a word or phrase.

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Air interface

The air interface, or access mode, is the communication link between the two stations in mobile or wireless communication.

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Apple Inc.

Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services.

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AT&T Mobility

AT&T Mobility LLC, also known as AT&T Wireless marketed as simply AT&T, is a wholly owned subsidiary of AT&T that provides wireless services to 138.8 million subscribers in the United States including Puerto Rico and the U.S. Virgin Islands.

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Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.

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Backbone network

A backbone is a part of computer network that interconnects various pieces of network, providing a path for the exchange of information between different LANs or subnetworks.

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Base station

Base station (or base radio station) is – according to the International Telecommunication Union's (ITU) Radio Regulations (RR) – a "land station in the land mobile service." The term is used in the context of mobile telephony, wireless computer networking and other wireless communications and in land surveying.

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Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception.

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Bharat Sanchar Nigam Limited

Bharat Sanchar Nigam Limited (abbreviated BSNL) is an Indian state-owned telecommunications company headquartered in New Delhi.

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Bit rate

In telecommunications and computing, bit rate (bitrate or as a variable R) is the number of bits that are conveyed or processed per unit of time.

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Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485GHz) from fixed and mobile devices, and building personal area networks (PANs).

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Canada is a country located in the northern part of North America.

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CDMA2000 (also known as C2K or IMT Multi‑Carrier (IMT‑MC)) is a family of 3G mobile technology standards for sending voice, data, and signaling data between mobile phones and cell sites.

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Interim Standard 95 (IS-95) was the first ever CDMA-based digital cellular technology.

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Celcom Axiata Berhad, DBA Celcom, is the oldest mobile telecommunications provider in Malaysia.

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Cellular frequencies

Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular-compatible mobile devices, such as mobile phones, to connect to cellular networks.

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Channel access method

In telecommunications and computer networks, a channel access method or multiple access method allows several terminals connected to the same multi-point transmission medium to transmit over it and to share its capacity.

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China Mobile

China Mobile, officially China Mobile Communications Corporation is a Chinese state-owned telecommunication corporation that provides mobile voice and multimedia services CMCC Official Site through its nationwide mobile telecommunications network across mainland China.

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China Netcom

China Netcom, full name China Netcom Group Corporation (Hong Kong) Limited (former stock codes: HKEX:0906, NYSE:CN), abbreviated CNC, was a former telecommunication service provider in People's Republic of China.

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China Telecom

China Telecom Corp., Ltd. is a Chinese Telecommunications company.

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Circuit Switched Data

In communications, Circuit Switched Data (CSD) is the original form of data transmission developed for the time-division multiple access (TDMA)-based mobile phone systems like Global System for Mobile Communications (GSM).

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Code-division multiple access

Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies.

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Common pilot channel

CPICH stands for Common Pilot Channel in UMTS and some other CDMA communications systems.

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Comparison of wireless data standards

A wide variety of different wireless data technologies exist, some in direct competition with one another, others designed for specific applications.

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Coverage (telecommunication)

In telecommunications, the coverage of a radio station is the geographic area where the station can communicate.

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A cross-licensing agreement is a contract between two or more parties where each party grants rights to their intellectual property to the other parties.

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Cycle per second

The cycle per second was a once-common English name for the unit of frequency now known as the hertz.

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Data-rate units

In telecommunications, data-transfer rate is the average number of bits (bitrate), characters or symbols (baudrate), or data blocks per unit time passing through a communication link in a data-transmission system.

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Datang Telecom Group

Datang Telecom Group (officially Datang Telecom Technology & Industry Group) is a Chinese telecommunications equipment group headquartered in Beijing, China.

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Deutsche Telekom

Deutsche Telekom AG (short form in writing only: DT) is a German telecommunications company headquartered in Bonn and by revenue the largest telecommunications provider in Europe.

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Digital Enhanced Cordless Telecommunications

Digital Enhanced Cordless Telecommunications (Digital European Cordless Telecommunications), usually known by the acronym DECT, is a standard primarily used for creating cordless telephone systems.

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Direct-sequence spread spectrum

In telecommunications, direct-sequence spread spectrum (DSSS) is a spread spectrum modulation technique used to reduce overall signal interference.

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Dual mode mobile

Dual mode mobiles refer to mobile phones that are compatible with more than one form of data transmission or network.

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Duplex (telecommunications)

A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions.

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Enhanced Data Rates for GSM Evolution

Enhanced Data rates for GSM Evolution (EDGE) (also known as Enhanced GPRS (EGPRS), or 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.

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The European Telecommunications Standards Institute (ETSI) is an independent, not-for-profit, standardization organization in the telecommunications industry (equipment makers and network operators) in Europe, headquartered in Sophia-Antipolis, France, with worldwide projection.

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European Conference of Postal and Telecommunications Administrations

The European Conference of Postal and Telecommunications Administrations (CEPT) was established on June 26, 1959, as a coordinating body for European state telecommunications and postal organizations.

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Evolution-Data Optimized

Evolution-Data Optimized (EV-DO, EVDO, etc.) is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access.

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Evolved High Speed Packet Access

Evolved High Speed Packet Access, or HSPA+, or HSPA(Plus), or HSPAP is a technical standard for wireless, broadband telecommunication.

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Finland (Suomi; Finland), officially the Republic of Finland is a country in Northern Europe bordering the Baltic Sea, Gulf of Bothnia, and Gulf of Finland, between Norway to the north, Sweden to the northwest, and Russia to the east.

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Freedom Mobile

Freedom Mobile Inc. is a Canadian wireless telecommunications provider owned by Shaw Communications.

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Freedom of Mobile Multimedia Access

Freedom of Mobile Multimedia Access (FOMA) is the brand name of the W-CDMA-based 3G telecommunications services being offered by the Japanese telecommunications service provider NTT DoCoMo.

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Frequency band

A frequency band is an interval in the frequency domain, delimited by a lower frequency and an upper frequency.

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General Packet Radio Service

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).

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Generic Access Network

Generic Access Network (GAN) extends mobile voice, data and multimedia (IP Multimedia Subsystem/Session Initiation Protocol (IMS/SIP)) applications over IP networks.

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GERAN is an abbreviation for GSM EDGE Radio Access Network.

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Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.

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GPRS core network

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.

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GSM (Global System for Mobile communications) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as tablets, first deployed in Finland in December 1991.

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The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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High Speed Packet Access

High Speed Packet Access (HSPA) is an amalgamation of two mobile protocols, High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA), that extends and improves the performance of existing 3G mobile telecommunication networks using the WCDMA protocols.

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HiperMAN (High Performance Radio Metropolitan Area Network) is a standard created by the European Telecommunications Standards Institute (ETSI) Broadband Radio Access Networks (BRAN) group to provide a wireless network communication in the 2–11 GHz bands across Europe and other countries which follow the ETSI standard.

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Huawei SingleRAN

Huawei SingleRAN is a radio access network (RAN) technology offered by Huawei that allows mobile telecommunications operators to support multiple mobile communications standards and wireless telephone services on a single network.

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Hutchison Whampoa

Hutchison Whampoa Limited (HWL) was an investment holding company based in Hong Kong.

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Installation (computer programs)

Installation (or setup) of a computer program (including device drivers and plugins), is the act of making the program ready for execution.

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Integrated Services Digital Network

Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.

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Interference (communication)

In communications and electronics, especially in telecommunications, interference is anything which modifies, or disrupts a signal as it travels along a channel between a source and a receiver.

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International Telecommunication Union

The International Telecommunication Union (ITU; Union Internationale des Télécommunications (UIT)), originally the International Telegraph Union (Union Télégraphique Internationale), is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies.

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The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.

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IP Multimedia Subsystem

The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem (IMS) is an architectural framework for delivering IP multimedia services.

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iPhone is a line of smartphones designed and marketed by Apple Inc. The iPhone line of products use Apple's iOS mobile operating system software.

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IPhone 4

The iPhone 4 is a smartphone that was designed and marketed by Apple Inc. Following a number of notable leaks, the iPhone 4 was first unveiled on June 7, 2010, at Apple's Worldwide Developers Conference in San Francisco, and was released on June 24, 2010, in the United States, United Kingdom, France, Germany and Japan.

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Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet.

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Japan (日本; Nippon or Nihon; formally 日本国 or Nihon-koku, lit. "State of Japan") is a sovereign island country in East Asia.

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KPN (in full Koninklijke KPN N.V., also Royal KPN N.V.) is a Dutch landline and mobile telecommunications company.

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KT Freetel Co., Ltd. (Korea Telecom Freetel, 주식회사케이티프리텔) was a South Korean telecommunications firm, now merged into Korea Telecom, specializing in cellular, or mobile, phones.

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List of interface bit rates

This is a list of interface bit rates, is a measure of information transfer rates, or digital bandwidth capacity, at which digital interfaces in a computer or network can communicate over various kinds of buses and channels.

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List of UMTS networks

The following is a list of mobile telecommunications networks using third-generation Universal Mobile Telecommunications System (UMTS) technology.

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LTE (telecommunication)

In telecommunication, Long-Term Evolution (LTE) is a standard for high-speed wireless communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies.

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M1 Limited

M1 Limited (previously known as MobileOne) is one of the three major telcos operating in the Republic of Singapore, the other two being Starhub and Singtel.

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Malaysia is a federal constitutional monarchy in Southeast Asia.

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Maxis Communications

Maxis Communications or Maxis Berhad is a communications service provider in Malaysia.

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In radio, multiple-input and multiple-output, or MIMO (pronounced or), is a method for multiplying the capacity of a radio link using multiple transmit and receive antennas to exploit multipath propagation.

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Ministry of Industry and Information Technology

Ministry of Industry and Information Technology (MIIT) of the Chinese government, established in March 2008, is the state agency of the People's Republic of China responsible for regulation and development of the postal service, Internet, wireless, broadcasting, communications, production of electronic and information goods, software industry and the promotion of the national knowledge economy.

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Mobile Application Part

The Mobile Application Part (MAP) is an SS7 protocol that provides an application layer for the various nodes in GSM and UMTS mobile core networks and GPRS core networks to communicate with each other in order to provide services to users.

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Mobile broadband modem

A mobile broadband modem, also known as a connect card or data card, is a type of modem that allows a personal computer or a router to receive Internet access via a mobile broadband connection instead of using telephone or cable television lines.

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Mobile phone

A mobile phone, known as a cell phone in North America, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.

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Mobile telephony

Mobile telephony is the provision of telephone services to phones which may move around freely rather than stay fixed in one location.

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Mobile User Objective System

The Mobile User Objective System is a narrowband military communications satellite system that supports a worldwide, multi-Service population of users in the ultra high frequency band.

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Data and Audio-Visual Enterprises Wireless, d/b/a Mobilicity, was a Canadian mobile virtual network operator owned by Rogers Communications.

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Multi-band device

In telecommunications, a multi-band device (including dual-band, tri-band, quad-band and penta-band devices) is a communication device (especially a mobile phone) that supports multiple radio frequency bands.

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Multimedia Messaging Service

Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network.

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Multiuser detection

Multiuser detection deals with demodulation of the mutually interfering digital streams of information that occur in areas such as wireless communications, high-speed data transmission, DSL, satellite communication, digital television, and magnetic recording.

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Network switching subsystem

Network switching subsystem (NSS) (or GSM core network) is the component of a GSM system that carries out call switching and mobility management functions for mobile phones roaming on the network of base stations.

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New York City

The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.

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New Zealand

New Zealand (Aotearoa) is a sovereign island country in the southwestern Pacific Ocean.

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Nextel Communications

Nextel Communications, Inc. was a wireless service operator that merged with and continues to exist as a wholly owned subsidiary of Sprint Corporation.

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Node B is the telecommunications node in particular mobile communication networks, namely those that adhere to the UMTS standard.

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Nokia E7-00

The Nokia E7-00, also known as Nokia E7, is a business-oriented QWERTY smartphone by Nokia from the Nokia Eseries.

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Nokia N8

The Nokia N8 is a touchscreen-based smartphone developed by Nokia.

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Non-access stratum

Non-access stratum (NAS) is a functional layer in the UMTS and LTE wireless telecom protocol stacks between the core network and user equipment.

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Norway (Norwegian: (Bokmål) or (Nynorsk); Norga), officially the Kingdom of Norway, is a unitary sovereign state whose territory comprises the western portion of the Scandinavian Peninsula plus the remote island of Jan Mayen and the archipelago of Svalbard.

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is the predominant mobile phone operator in Japan.

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The Open Document Management API is an API that simplifies the communication of desktop applications with document management systems (DMS).

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The Office of Communications (Y Swyddfa Gyfathrebiadau), commonly known as Ofcom, is the UK government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom.

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Online and offline

In computer technology and telecommunications, online indicates a state of connectivity, and offline indicates a disconnected state.

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Operations and Maintenance Centre

In mobile networks, an Operation and Maintenance Center is the central location to operate and maintain the network.

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Opportunity Driven Multiple Access

Opportunity-Driven Multiple Access (ODMA) is a UMTS communications relaying protocol standard first introduced by the European Telecommunication Standards Institute (ETSI) in 1996.

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Singtel Optus Pty Limited is the second largest telecommunications company in Australia.

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Orthogonal frequency-division multiplexing

In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a method of encoding digital data on multiple carrier frequencies.

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OSI model

The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal structure and technology.

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A patent is a set of exclusive rights granted by a sovereign state or intergovernmental organization to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention.

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PDCP is an abbreviation for Packet Data Convergence Protocol.

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Personal Communications Service

At the most basic level, Personal Communications Service (PCS) describes a set of communications capabilities which allows some combination of terminal mobility, personal mobility, and service profile management.

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Personal digital assistant

A personal digital assistant (PDA), also known as a handheld PC, is a variety mobile device which functions as a personal information manager.

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Personal Handy-phone System

The Personal Handy-phone System (PHS), also marketed as the Personal Access System (PAS) and commercially branded as Xiaolingtong in Mainland China, is a mobile network system operating in the 1880–1930 MHz frequency band, used mainly in Japan, China, Taiwan, and some other Asian countries and regions.

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Power control

Power control, broadly speaking, is the intelligent selection of transmitter power output in a communication system to achieve good performance within the system.

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Pseudorandom number generator

A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG), is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers.

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Qualcomm is an American multinational semiconductor and telecommunications equipment company that designs and markets wireless telecommunications products and services.

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Radio access network

A radio access network (RAN) is part of a mobile telecommunication system.

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Radio Bearer in UMTS

A bearer service is a link between two points, which is defined by a certain set of characteristics.

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Radio Link Control

Radio link control (RLC) is a layer 2 protocol used in UMTS and LTE on the Air interface.

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Radio Network Controller

The Radio Network Controller (or RNC) is a governing element in the UMTS radio access network (UTRAN) and is responsible for controlling the Node Bs that are connected to it.

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Radio Resource Control

The Radio Resource Control (RRC) protocol is used in UMTS and LTE on the Air interface.

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Radio resource management

Radio resource management (RRM) is the system level management of co-channel interference, radio resources, and other radio transmission characteristics in wireless communication systems, for example cellular networks, wireless local area networks and wireless sensor systems.

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Radio spectrum

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz).

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Roaming is a wireless telecommunication term typically used with mobile devices (like mobile phones).

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Service data unit

In Open Systems Interconnection (OSI) terminology, a service data unit (SDU) is a unit of data that has been passed down from an OSI layer or sublayer to a lower layer.

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Siemens AG is a German conglomerate company headquartered in Berlin and Munich and the largest industrial manufacturing company in Europe with branch offices abroad.

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Signalling System No. 7

Signaling System No.

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Singapore, officially the Republic of Singapore, is a sovereign city-state and island country in Southeast Asia.

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SK Telecom

SK Telecom Co., Ltd. (Hangul: SK텔레콤 or 에스케이텔레콤) (full name: Sunkyong Telecom) is a South Korean wireless telecommunications operator, it is part of the SK Group, one of the country's largest chaebols.

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SoftBank Group

is a Japanese multinational holding conglomerate headquartered in Tokyo, Japan.

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South Korea

South Korea, officially the Republic of Korea (대한민국; Hanja: 大韓民國; Daehan Minguk,; lit. "The Great Country of the Han People"), is a country in East Asia, constituting the southern part of the Korean Peninsula and lying east to the Asian mainland.

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Spark New Zealand

Spark New Zealand (formerly Telecom New Zealand) is a New Zealand telecommunications company providing fixed line telephone services, a mobile network, an internet service provider, and a major ICT provider to NZ businesses (through its Spark Digital division).

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Spark New Zealand Mobile

The XT Mobile Network is a UMTS and LTE mobile network run by Spark New Zealand (formerly Telecom New Zealand).

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Spread spectrum

In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.

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Standardization or standardisation is the process of implementing and developing technical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations and governments Standardization can help to maximize compatibility, interoperability, safety, repeatability, or quality.

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Standardization Administration of China

The Standardization Administration of the People's Republic of China (SAC) is the standards organization authorized by the State Council of China to exercise administrative responsibilities by undertaking unified management, supervision and overall coordination of standardization work in China.

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Subscriber identity module

A subscriber identity module or subscriber identification module (SIM), widely known as a SIM card, is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers).

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Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.

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Synchronous CDMA

""Synchronous CDMA"" Synchronous CDMA (SCDMA) is one of the air interfaces of CDMA standards, it used the technology of TDMA to achieve the synchronization of the terminal's upload timeslot.

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T-Mobile US

T-Mobile US, Inc., commonly shortened to T-Mobile, is a United States-based wireless network operator whose majority shareholder is the German telecommunications company Deutsche Telekom (DT). Its headquarters are located in Bellevue, Washington, in the Seattle metropolitan area. T-Mobile is the third largest wireless carrier in the United States with 74 million customers as of Q1 2018. T-Mobile US provides wireless voice and data services in the United States, Puerto Rico and the U.S. Virgin Islands under the T-Mobile and MetroPCS brands (which it acquired in a reverse takeover in 2013, resulting in the company going public on the NASDAQ stock exchange), and also serves as the host network for many mobile virtual network operators. The company has annual revenues of over $40 billion. In 2015, Consumer Reports named T-Mobile the number one American wireless carrier. In 2017, T-Mobile was ranked #1 in Customer Service Satisfaction by Nielsen.

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Tablet computer

A tablet computer, commonly shortened to tablet, is a portable personal computer, typically with a mobile operating system and LCD touchscreen display processing circuitry, and a rechargeable battery in a single thin, flat package.

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Tandem Free Operation

Tandem Free Operation (TFO) is a part of ETSI's 3GPP standard specification, which has been included from R99 of the standards specifications onwards.

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Telecommunications in China

The People's Republic of China possesses a diversified communications system that links all parts of the country by Internet, telephone, telegraph, radio, and television.

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Telecommunications industry in China

The telecommunications industry in China is dominated by three state-run businesses: China Telecom, China Unicom and China Mobile.

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Telecommunications link

In telecommunications a link is a communication channel that connects two or more devices.

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Telefónica, S.A. is a Spanish multinational broadband and telecommunications provider with operations in Europe, Asia, and North, Central and South America.

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Telenor ASA is a Norwegian multinational telecommunications company headquartered at Fornebu in Bærum, close to Oslo.

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Telia Company

Telia Company AB is a Swedish dominant telephone company and mobile network operator present in Sweden, Finland, Norway, Denmark and Baltic States.

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Telia Norge

Telia Norge AS is a Norwegian mobile phone operator.

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Telstra Corporation Ltd. (known as Telstra) is Australia's largest telecommunications company which builds and operates telecommunications networks and markets voice, mobile, internet access, pay television and other products and services.

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Time-division multiple access

Time-division multiple access (TDMA) is a channel access method for shared-medium networks.

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Time-division multiplexing

Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern.

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The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard.

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UMTS channels

The UMTS channels are communication channels used by third generation (3G) wireless Universal Mobile Telecommunications System (UMTS) networks.

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UMTS frequency bands

The UMTS frequency bands are radio frequencies used by third generation (3G) wireless Universal Mobile Telecommunications System networks.

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UMTS security

The Universal Mobile Telecommunications System (UMTS) is one of the new ‘third generation’ 3G mobile cellular communication systems.

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UMTS Terrestrial Radio Access Network

UTRAN (short for "Universal Terrestrial Radio Access Network") is a collective term for the network and equipment that connects mobile handsets to the public telephone network or the Internet.

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USB (abbreviation of Universal Serial Bus), is an industry standard that was developed to define cables, connectors and protocols for connection, communication, and power supply between personal computers and their peripheral devices.

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User equipment

In the Universal Mobile Telecommunications System (UMTS) and 3GPP Long Term Evolution (LTE), user equipment (UE) is any device used directly by an end-user to communicate.

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Vertical handover

Vertical handover or vertical handoff refers to a network node changing the type of connectivity it uses to access a supporting infrastructure, usually to support node mobility.

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Vidéotron is a Canadian integrated telecommunications company active in cable television, interactive multimedia development, video on demand, cable telephony, wireless communication and Internet access services.

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Video on demand

Video on demand is a programming system which allows users to select and watch/listen to video or audio content such as movies and TV shows whenever they choose, rather than at a scheduled broadcast time, the method that prevailed with over-the-air programming during the 20th century.

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Videotelephony comprises the technologies for the reception and transmission of audio-video signals by users at different locations, for communication between people in real-time.

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Vodafone Group plc is a British multinational telecommunications conglomerate, with headquarters in London.

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Vodafone (Australia)

Vodafone Australia or Vodafone Hutchison Australia (VHA) is a mobile telecommunications company that operates the Vodafone brand in Australia.

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Wi-Fi or WiFi is technology for radio wireless local area networking of devices based on the IEEE 802.11 standards.

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WiMAX (Worldwide Interoperability for Microwave Access) is a family of wireless communication standards based on the IEEE 802.16 set of standards, which provide multiple physical layer (PHY) and Media Access Control (MAC) options.

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Wireless access point

20018 In computer networking, a wireless access point (WAP), or more generally just access point (AP), is a networking hardware device that allows a Wi-Fi device to connect to a wired network.

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Wireless ad hoc network

A wireless ad hoc network (WANET) or MANET (Mobile ad hoc network) is a decentralised type of wireless network.

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Wireless LAN

A wireless local area network (WLAN) is a wireless computer network that links two or more devices using wireless communication within a limited area such as a home, school, computer laboratory, or office building.

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ZDNet is a business technology news website published by CBS Interactive, along with TechRepublic.

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1G refers to the first generation of wireless cellular technology (mobile telecommunications).

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2G (or 2-G) is short for second-generation cellular technology.

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3 (telecommunications)

3 (or Three) is a global brand name under which several UMTS-based mobile phone networks and Broadband Internet Providers operate in Hong Kong, Macau, Austria, Denmark, Indonesia, Ireland, Italy, Sweden and the United Kingdom.

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3G, short for third generation, is the third generation of wireless mobile telecommunications technology.

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The 3rd Generation Partnership Project (3GPP) is a collaboration between groups of telecommunications standards associations, known as the Organizational Partners.

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3rd Generation Partnership Project 2

The 3rd Generation Partnership Project 2 (3GPP2) is a collaboration between telecommunications associations to make a globally applicable third generation (3G) mobile phone system specification within the scope of the ITU's IMT-2000 project.

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4G is the fourth generation of broadband cellular network technology, succeeding 3G.

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Redirects here:

List of TD-SCDMA networks, TD SCDMA, TD-CDMA, TD-SCDMA, TDSCDMA, Time Division Synchronous Code Division Multiple Access, Time Division-Synchronous Code Division Multiple Access, UARFCN, UMTS (telecommunication), UMTS (telecommunications), UMTS-FDD, UMTS-TDD, UTRA, UTRA TDD-HCR, UTRA TDD-LCR, UTRA-TDD, UTRA-TDD HCR, UTRA-TDD LCR, Umts, Universal Mobile Telecommunications System, Universal Mobile Telephone System, Universal mobile telecommunications system, W-CDMA, WCDMA, Wideband CDMA, Wideband Code Division Multiple Access, Wideband code division multiple access.


[1] https://en.wikipedia.org/wiki/UMTS

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