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Encyclopedia results for UMTS

  1. Kyocera C4700

    Infobox Mobile phone name Kyocera C4700 image Kyocera C4700.jpg manufacturer Kyocera Wireless screen 240x320 pixels ext screen 2.8 inches camera 2.0 megapixel os Smarterphone OS 2.4 input Predictive, multitap networks GSM , UMTS memory card Micro SD size 111.6 x 59.6 x 13.2 mm form Slate phone Slate battery 1030 mAh Li ion weight 103 g other Touchscreen, Haptic Touch feedback The Kyocera C4700 , also referred to as the Kyocera Cabo , is a touch slate phone from Kyocera Wireless Kyocera with support for social media . It was shown first at the Expo Comm Wireless Japan 2011 show in Tokyo. Features include ref http latin.kyocera wireless.com c4700 phone index.htm Kyocera C4700 specification ref LCD resistive touch color display 240 x 320 pixels 2.8 Web access HTML and WAP 2.0 browser Socal media Facebook , Twitter and YouTube Email, including Hotmail , Yahoo and Gmail GPS locator Stereo Bluetooth FM radio MicroSD card up to 8GB Java MIDP 2.1 Other technical data Battery life Talk up to 4 hours, Standby up to 400 hours on GSM, 350 hours on UMTS Bands UMTS 850 1900  MHz, GSM 850 900 1800 1900  MHz Carriers Movilnet References references Category Kyocera mobile phones ...   more details



  1. DPDCH

    Unreferenced stub auto yes date December 2009 Orphan date February 2009 DPDCH , Dedicated Physical Data CHannel , is a term from UMTS . This is the physical channel on radio interface Uu on which payload e.g. IP data, voice as well as higher layer signalling RRC and Non Access Stratum NAS signalling is transmitted both, on the uplink by the UE user equipment to the Node B the base transceiver station and on the downlink , by the Node B to the UE . DEFAULTSORT Dpdch Category Universal Mobile Telecommunications System Wireless stub ...   more details



  1. DPCCH

    Unreferenced stub auto yes date December 2009 Orphan date February 2009 DPCCH , Dedicated Physical Control CHannel , is a term from UMTS . This is the physical channel on which the Signalling telecommunication signalling is transmitted, both on the uplink by the UE user equipment to the Node B the base transceiver station and on the downlink by the Node B to the UE . DEFAULTSORT Dpcch Category Universal Mobile Telecommunications System Wireless stub ...   more details



  1. RNSAP

    Unreferenced stub auto yes date December 2009 Orphan date December 2009 RNSAP R adio N etwork S ubsystem A pplication P art is a 3GPP Communications protocol signalling protocol responsible for communications between Radio Network Controller s. It is carried on the UMTS Terrestrial Radio Access Network lur interface and provides functionality needed for soft handover s and Save & Restore Network Configuration relocation. It is defined by the 3GPP specification TS 25.423 DEFAULTSORT Rnsap Category Network protocols Telecomm stub ...   more details



  1. Sami Swoi (mobile brand)

    Orphan date February 2009 Sami Swoi pronunciation sami swoji is a brand name of one of prepaid mobile phone pay as you go services offered by a Poland Polish GSM UMTS provider Plus GSM Polkomtel . The brand was introduced in 2004 and marketed mainly for elderly people. External links http www.samiswoi.pl Sami Swoi official website Category Mobile phone companies of Poland wireless stub pl Sami Swoi ...   more details



  1. USIM

    USIM may refer to Universiti Sains Islam Malaysia Universal Subscriber Identity Module , a software application for Universal Mobile Telecommunications System UMTS mobile telephony, which runs on a Universal Integrated Circuit Card UICC an analog of a Subscriber Identity Module SIM card which is inserted in a 3G mobile phone note it is a common misconception to call the UICC card itself a USIM, but the USIM is just the logical entity on a physical card disambig ...   more details



  1. Radio Base Station

    Orphan date February 2009 Radio Base Station RBS is the commercial name given to the family of Base Station s developed by Ericsson . Over the years every Mobile Telephony Base Station developed by the multinational supported technologies range from IS136 TDMA to UMTS has been sold with this name, although the concept of Radio Base is that of a transceiver that is primarily intended for serving as a Trunked radio system Base Station for voice communication. Category Ericsson ...   more details



  1. Sony Ericsson K850i

    the UMTS talk time has been significantly increased to 3 hours 30 min over its predecessor, the Sony ..., UMTS 850, UMTS 1900, UMTS 2100. ref http www.sonystyle.com.hk ss product mobile k850i.jsp ref Design ... V, 930  mAh, lithium polymer Talk time GSM UMTS Up to 9  h 3  h 30  min Standby time GSM UMTS Up to 400  h 350  h Video call time K850 Up to 3  h 20  min Variants K850i for international markets Universal Mobile Telecommunications System UMTS High Speed Downlink Packet Access HSDPA tri band UMTS frequency bands UMTS 850 , UMTS frequency bands UMTS 1900 , UMTS frequency bands UMTS 2100 GSM GPRS Enhanced Data Rates for GSM Evolution EDGE quad band GSM frequency bands ...   more details



  1. Calling Name Presentation

    Caller Name Presentation CNAP is a functionality on phone networks to provide the name identification of the calling party. This could be the personal name, company name, in which case it s blocked simply as restricted , or if technical failures occur not available . ref http www.3gpp2.org public html specs S.R0006 526 A v1.0 070624.pdf 3gpp2.org S.R0006 526 A v1.0 070624.pdf ref References reflist External links http www.3gpp.org the 3GPP, the standardisation body for GSM and UMTS Mobile telecommunications standards Category GSM standard Category Telecommunications infrastructure ...   more details



  1. HTC Touch 3G

    overview.html ref Part of the HTC Touch Family , it features quad band GSM and dual band UMTS connectivity ... System UMTS High Speed Downlink Packet Access HSDPA High Speed Uplink Packet Access HSUPA UMTS frequency bands UMTS 900 , UMTS frequency bands UMTS 2100 GPS and A GPS Wi Fi IEEE 802.11 802.11b g Bluetooth ...   more details



  1. Open Services Architecture

    The Open Service Access or OSA is part of the third generation mobile telecommunications network or UMTS . OSA describes how Service systems architecture services are designed in a UMTS network. The standards for OSA are being developed as part of the 3rd Generation Partnership Project 3GPP . The standards for OSA are published by ETSI and 3GPP. The API for OSA is called Parlay , or Parlay OSA or OSA Parlay as the APIs are developed jointly in collaboration by 3GPP, ETSI, and the Parlay Group. These APIs can be freely downloaded from the web. Sometimes OSA would be misspelled as Open Services Architecture or even confused with Open systems architecture . See also Parlay Customised Applications for Mobile networks Enhanced Logic CAMEL IP Multimedia Subsystem Multitier architecture Service layer External links http www.parlay.org en specifications Download APIs http docbox.etsi.org TISPAN Open OSA The joint 3GPP ETSI Parlay work group Category Universal Mobile Telecommunications System Category Article Feedback 5 telecomm stub de Open Service Access fr Open Services Architecture ...   more details



  1. RANAP

    Multiple issues refimprove June 2006 context November 2009 RANAP R adio A ccess N etwork A pplication P art ref http www.3gpp.org ftp Specs html info 25413.htm RANAP Specifications ref protocol is used in Universal Mobile Telecommunications System UMTS signaling between the Core Network, which can be a Network Switching Subsystem MSC or SGSN , and the UTRAN . RANAP is carried over Iu interface. RANAP signalling protocol resides in the control plane of Radio network layer of Iu interface in the UMTS Universal Mobile Telecommunication System protocol stack. Iu interface is the interface between RNC Radio Network Controller and CN Core Network . nb. For Iu ps transport RANAP is carried on SCTP if IP interface used on this. Functionality RANAP is used for the following tasks Relocation Paging telecommunications Paging Radio Access Bearer Management Transport of signalling between a UE and the Core Network Non Access Stratum signalling References Reflist DEFAULTSORT Ranap Category Network protocols telecom stub ...   more details



  1. GERAN

    about the mobile telecommunications network Geran disambiguation citations missing date April 2011 GERAN is an abbreviation for GSM Enhanced Data Rates for GSM Evolution EDGE Radio Access Network. The standards for GERAN are maintained by the 3GPP Third Generation Partnership Project . GERAN is a key part of GSM, and also of combined UMTS GSM networks. GERAN is the radio part of GSM Enhanced Data Rates for GSM Evolution EDGE together with the network that joins the base stations the Ater and Abis interfaces and the Base Station Subsystem base station controllers A interfaces, etc. The network represents the core of a GSM network, through which phone calls and packet data are routed from and to the PSTN and Internet to and from subscriber handsets. A mobile phone operator s network comprises one or more GERANs, coupled with UTRAN s in the case of a UMTS GSM network. A GERAN without EDGE is a GRAN , but is otherwise identical in concept. A GERAN without GSM is an ERAN. External links http www.3gpp.org tb GERAN GERAN.htm 3GPP GERAN page Category GSM standard fr GERAN zh GERAN ...   more details



  1. Utel (Ukraine)

    Infobox Company company name Utel br company logo File Logo Utel.jpg company type State owned enterprise foundation 1992 location Ukraine industry Telecommunication s br Mobile communications homepage http www.utel.ua http www.utel.ua Utel lang uk is a telecommunications company in Ukraine . It is a subsidiary of Ukrtelecom , government owned fixed phone operator. Utel launched country s first commercial 3G cellular network based on the UMTS HSDPA standard on November 1, 2007. Currently UTEL is only network in Ukraine that provides UMTS 2100 service other providers provide CDMA technology . It s 3G coverage exists only in main cities ref http ukrtelecom.ua services business mobile coverage UTEL coverage map ref . References reflist External links http en.ukrtelecom.ua Official site Category Mobile phone companies of Ukraine Ukraine company stub telecom company stub ru Utel uk ...   more details



  1. SUNAB

    Infobox company company name Svenska UMTS N t AB company logo Image SUNAB logo.gif foundation 2002 location Stockholm , Sweden area served Sweden industry Telecommunication s products mobile network operator homepage http www.svenskaumts.se www.svenskaumts.se intl no SUNAB , Svenska UMTS n t AB, is a company jointly owned by Tele2 Tele2 Sverige AB and TeliaSonera TeliaSonera AB for the purpose of building, owning and operating a 3G network for the parent companies. ref cite web url http www.businessweek.com globalbiz content jun2009 gb20090624 782722.htm title Share Mobile Networks, Seduce Customers last Nordstrom first Bengt date 24 June 2009 work businessweek.com accessdate 18 December 2010 ref SUNAB was formed in 2002. The joint network operated by SUNAB is the largest 3G network in Sweden, both by coverage and customer base. References reflist Category Telecommunications companies of Sweden sv SUNAB ...   more details



  1. Siemens SXG75

    Image Siemens SXG75.png thumb right Metallic Black version The Siemens SXG75 is a candybar type UMTS triband mobile phone . This is the first UMTS phone developed by Siemens previous models the Siemens U10 U10 and the Siemens U15 U15 were developed by Motorola Mobile Devices Motorola . This is also the company s last such device, since the Siemens SG75 SG75 was cancelled and newer models carried the BenQ Siemens brand name. Besides UMTS, it differs from its predecessors in other features Integrated GPS receiver QVGA Electronic visual display display the Siemens SX45 SX45 was developed by Casio and the Siemens SX56 SX56 and Siemens SX66 SX66 were developed by HTC Corporation Binary Runtime Environment for Wireless Brew operating system , capable of Computer multitasking multitasking 2 megapixel camera phone camera . The phone supports Internet access through GPRS and UMTS , but not Enhanced Data Rates for GSM Evolution EDGE . Technical data cellpadding 4 width 600px bgcolor DDDDDD Feature Data bgcolor EEEEEE Networks GSM Tri band 900 1800 1900, W CDMA 2100 bgcolor EEEEEE Dimensions 111.5  mm 53  mm 20  mm bgcolor EEEEEE Weight 134 g bgcolor EEEEEE Display resolution 240 320 pixel s QVGA bgcolor EEEEEE Display color depth 262.144 colours bgcolor EEEEEE Battery Standby time GSM 325 400 h UMTS 375 400 h br Talk time GSM 225 360 min UMTS 180 300 min bgcolor EEEEEE Memory Internal 128MB 72 MB available for the user , RS MMC slot with hot swapping ability bgcolor EEEEEE Operating system Siemens proprietary user interface BREW uiOne bgcolor EEEEEE General Packet Radio Service GPRS Class 10 2 Tx 4 Rx bgcolor EEEEEE Messaging SMS with T9 predictive text T9 , Multimedia Messaging Service MMS , E mail , instant messaging bgcolor EEEEEE Interfaces Bluetooth , IrDA , Universal Serial Bus USB 1.1 bgcolor EEEEEE Camera Main 2 megapixel , without autofocus or Flash photography flash br Videocall Common Intermediate Format CIF bgcolor EEEEEE Others Global Positioning System ...   more details



  1. Nokia 6500 slide

    Infobox Mobile phone name Nokia 6500 slide image Nokia6500SlideOpen.jpg imagesize 200 px manufacturer Nokia available September 2007 screen 2.2 inch QVGA LCD 16.7 million colors camera 3.2 megapixels, with Carl Zeiss AG optics also has Auto Focus operatingsystem Series 40 3rd edition memory 20MB networks UMTS 850 2100 GSM 850 900 1800 1900 battery BP 5M 900 mAh connectivity Bluetooth 2.0, Micro USB, 2.5mm AV connector size 96.5 46.5 16.4 mm form Slide form Slide weight 124 g related Nokia 6500 classic , Nokia 6300 Nokia Aluminium Collection Series 40 is not SymbianOS based. It is based on Nokia s own operating system The Nokia 6500 slide is a mobile phone by Nokia . The phone runs the Nokia Series 40 Series 40 platform. The case is made of brushed stainless steel. It is the Slide version of Nokia 6500 classic . Features Communications Quad band GSM General Packet Radio Service GPRS Enhanced Data Rates for GSM Evolution EDGE GSM frequency bands GSM 850 and GSM 1900 GSM 850 , GSM frequency bands GSM 900, GSM 1800 and EGSM EGSM 900 GSM 900 , GSM frequency bands GSM 900, GSM 1800 and EGSM EGSM 900 GSM 1800 , GSM frequency bands GSM 850 and GSM 1900 GSM 1900 Dual band Universal Mobile Telecommunications System UMTS W CDMA UMTS frequency bands UMTS 850 , UMTS frequency bands UMTS 2100 This phone does not run Symbian OS Media Music player supports MP3, MP4, AAC, eAAC , and WMA audio formats. Video playback supports QVGA for H.263, MPEG4, and QCIF for H264 formats and codecs. Video streaming supports H.263 & MPEG4 up to QVGA, 15 frame s , and H.264 QCIF 15 frame s formats. FM Radio Camera 3.2 megapixel Carl Zeiss AG Optics camera, with Video Recording VGA 15 frame s Takes photos up to 2048x1536 Integrated Double LED Flash Secondary camera for video calling QCIF resolution, 15 frame s Display 2.2 240 320 pixels QVGA LCD display supporting up to 16.7 million true colours Connectivity Micro USB 2.0 Bluetooth version 2.0 with A2DP 2.5mm AV connector for headset and TV Out cable ...   more details



  1. Vodafone New Zealand

    phone network at 900  MHz and 1800  MHz and a UMTS 3G network at 900  MHz and 2100  .... UMTS Coverage In the main centres Vodafone operates UMTS 3G service via the 2100  MHz band. UMTS ... where UMTS phones would have to hand down to 900  MHz or 1800  MHz GSM service. In recent years Vodafone has established many individual 2100  MHz UMTS sites to enhance 3G coverage. In rural areas, however, Vodafone has installed 900  MHz UMTS 3G service alongside their existing 900  MHz GSM 2G service. In theory 900  MHz UMTS service should have roughly the same coverage area as 900  MHz GSM service so instances of UMTS service being handed down to GSM should occur ... older UMTS phones only support 2100  MHz service so these phones will hand down to 900  MHz GSM even though there is UMTS service available at 900  MHz. Phone numbers In New Zealand all ... 3G network, using the UMTS technology now becoming widespread in Europe. Using this standard, Vodafone ... clients, to add to its existing UMTS network. HSPA is capable of a theoretical maximum 56 Mbit s download ...   more details



  1. Freedom of Mobile Multimedia Access

    of the 3G Release 99 specification, their network was initially incompatible with UMTS. ref cite author ... with the specification and enabling 100 compatibility with UMTS handsets, including incoming and outgoing ..., which are made specifically for the Japanese market. FOMA terminals differ from Western UMTS terminals ... some models branded as World Wing . Frequency allocations In metropolitan areas, FOMA uses the UMTS frequency bands UMTS band I around 2100  MHz, which has been originally assigned to IMT 2000 ... assigned to the 2G Personal Digital Cellular PDC mova service, which corresponds to UMTS frequency bands UMTS band VI and is similar to band V used in the United States . ref name freqalloc Cite news ...   more details



  1. Common control physical channel

    included, in UMTS. A definition for Ec Io applicable to CCPCH can be found in 3GPP http www.3gpp.org ...   more details



  1. Play (telecommunications)

    Infobox Company company name Play company logo File Play Telecommunications logo.jpg 150px company type slogan Play. Najszybciej rozwijaj ca si sie w Polsce foundation 2007 location Warsaw key people J rgen Bang Jensen industry Telecommunication s products Prepaid mobile phone Prepaid and postpaid mobile phone s num employees homepage http www.play.pl Distinguish Playmobil Play , P4 is a brand name of the fourth Polish cellular telecommunications provider. Icelandic led Novator Partners Novator acquired a large stake in the company. ref name whoisbjorgolfsson cite web url http www.invgr.com bjorgolfur thor bjorgolfsson.htm title Who is Thor Bjorgolfsson, Iceland s lone billionaire? publisher Invest in Greece date 2006 01 20 ref Network Play is the fourth cellular network in Poland. PLAY uses EGSM 900 for its 2G services and UMTS 2100 for 3G. Its MCC is 260 06. Thanks to domestic roaming with Polkomtel, Play is a nation wide cellular carrier. Native Network As of 8.01.2010, PLAY Mobile has 2311 EGSM 900 BTS and 3494 UMTS nodeB s. Currently 60 of population is covered with Play s native 3G network and 40 of population with 2G network. UMTS is available in about 300 cities and towns around Poland. Play started building its 3G network at the beginning of its existence 2007 and announced that its goal is to cover all of Poland with UMTS while provide GSM services through roaming. However, PLAY started building its GSM network in March 2009 in apparent bid to reduce roaming costs. Roaming On 09.06.2006 PLAY signed a domestic roaming agreement with Plus operator Polkomtel. It allows Play subscribers to access Plus GSM network as well as UMTS network. Roaming is nationwide, free and unlimited. In addition, Play subscribers can manually pick Plus GSM network despite presence of Play s native network. However, Plus domestic network cannot be used with Play s Mobile Broadband products. Play also has agreements with most of the operators worldwide to provide international roa ...   more details



  1. Nokia 6500 classic

    Infobox Mobile phone name Nokia 6500 classic image Nokia6500Classic.JPG imagesize 200px manufacturer Nokia available October 2007 screen 2 inch QVGA LCD 16 million colors camera 2.0 megapixels operatingsystem Series 40 5th edition memory 1  GB networks WCDMA 850 2100 GSM EGSM 850 900 1800 1900 battery BL 6P 830 mAh connectivity Bluetooth 2.0, Micro USB size 109.8  mm 45  mm 9.5  mm form Bar form Candybar weight convert 94 g lb abbr on related Nokia 6500 slide , Nokia 6300 Nokia Aluminium Collection hac M2 ref cite web url http www.nokiausa.com find products phones nokia 6500 classic specifications title Nokia USA Nokia 6500 classic Technical specifications accessdate 2009 08 29 ref Series 40 is not SymbianOS based. It is based on Nokia s own operating system The Nokia 6500 classic is a mobile phone by Nokia . The phone runs the Nokia Series 40 Series 40 platform. The case is made of brushed aluminium. Features Communications Quad band GSM General Packet Radio Service GPRS Enhanced Data Rates for GSM Evolution EDGE GSM frequency bands GSM 850 and GSM 1900 GSM 850 , GSM frequency bands GSM 900, GSM 1800 and EGSM EGSM 900 GSM 900 , GSM frequency bands GSM 900, GSM 1800 and EGSM EGSM 900 GSM 1800 , GSM frequency bands GSM 850 and GSM 1900 GSM 1900 Dual band Universal Mobile Telecommunications System UMTS UMTS frequency bands UMTS 850 , UMTS frequency bands UMTS 2100 This phone does not run Symbian OS Media Music player supports AAC, eAAC , and MP3 audio formats. Video playback supports H.263, MPEG4, and 3GPP formats and codecs. Video streaming supports 3GPP and H.263 formats. Camera 2 megapixel camera, Video Recording 176 144 Max Display 2 240 320 pixels QVGA display supporting up to 16.7 million true colours Connectivity Micro USB 2.0 Remote SyncML data synchronisation via Bluetooth Browsing xHTML browser over wTCP IP stack supports WAP release 2.0 WML WAP 2.0 browser Memory 1  GB internal memory with up to 923  MB user free memory Power Managem ...   more details



  1. UU

    UU may refer to Linguistics uu , an old way of spelling the letter w in certain Germanic languages e.g. the Merseburg Incantations spell the name of the god Woden as Uu dan . The letter combination of uu Computing Unique user s, may be counted as part of web analytics in determining the popularity of a website UUNET , Internet Service Provider commonly referred to as UU Unix to Unix, as in uuencode , a data transport encoding Until URU , a computer game Organizations LSE stock ticker symbol for United Utilities IATA code for Air Austral airline The Ulster Unionist Party also UUP , a political party in Northern Ireland Union Underground , former American rock band Religion Unitarian Universalism , a theologically liberal religion characterized by its support for a free and responsible search for truth and meaning. Education Uppsala University in Sweden University of Ulster in Northern Ireland Utrecht University University of Utrecht , alternatively known as Utrecht University, in the Netherlands University of Utah in the United States Union University in the United States The Unseen University , in the fictional Discworld novels of Terry Pratchett Uu may also refer to the Uu interface , Universal Mobile Telecommunications System Air interfaces UMTS air interface , which links the User equipment User Equipment to UMTS Terrestrial Radio Access Network in a Universal Mobile Telecommunications System UMTS network. disambiguation de UU es UU fa UU fr UU ko UU it UU sw UU ja UU no UU pt UU sv UU ...   more details



  1. ALCAP

    Unreferenced stub date December 2009 Context date October 2009 Control plane protocol for the transport layer in 3rd Generation UMTS networks is called ALCAP A ccess L ink C ontrol A pplication P art . ALCAP is defined by 3GPP as equivalent of ITU recommendation Q.2630.2. Basic functionality of ALCAP is multiplexing of different users onto one AAL2 transmission path using channel IDs CIDs . It is used in the UMTS access network UTRAN along with ATM, while IPBCP is use for IP links in the core of the network. ALCAP makes it possible for up to 248 channels to be multiplexed onto one AAL2 bearer. Protocol Stack pre ALCAP SAAL AAL5 ATM b Physical layer pre Access Link Control Application Part ALCAP ALCAP is the protocol used for control plane of transport layer UMTS in charge of managing and multiplexing users into ATM AAL2 virtual connections. ALCAP is specified for Iub, Iur and Iu circuit switched domain interfaces. This protocol is only used when these interfaces are ATM based. The ITU T Q.2630.2 standard, AAL type 2 signalling protocol Capability Set 2, is chosen for ALCAP protocol. History For Iub and Iur interfaces, ALCAP is specified in 3GPP TS 25.426. For Iu interface, ALCAP is specified in 3GPP TS 25.414. Protocol dependencies STC Signalling Transport Converter SSCOP the SAAL sublayer that transports ALCAP signaling messages. SSCF NNI, MTP3b additional layers applicable only for Iur and Iu interfaces. DEFAULTSORT Alcap Category Internet protocols Category Transport layer protocols Category OSI protocols Telecomm stub ...   more details



  1. TD-CDMA

    TD CDMA , an acronym for time division multiple access Time division Code division multiple access CDMA , is a channel access method based on using spread spectrum across multiple time slot s. ref name Forkel cite web url http citeseerx.ist.psu.edu viewdoc summary?doi 10.1.1.11.3672 title Performance Comparison Between UTRA TDD High Chip Rate And Low Chip Rate Operation accessdate 2009 02 16 author Forkel et al. date 2002 ref It is shown that a mixture of Time division multiple access TDMA and CDMA provides better quality of service for multimedia communication s in terms of data throughput and voice video quality. ref citeweb title Throughput maximization in multimedia TDMA CDMA systems url http ieeexplore.ieee.org xpl freeabs all.jsp?tp &arnumber 1558020&isnumber 33097 author Suh et al. date 2005 ref Standardized implementations TD CDMA is used in IMT 2000 s 3G air interface, defined as IMT TD Time Division, and can also be found in use in UMTS air interfaces, as standardized by the 3GPP in UTRA TDD HCR . UTRA TDD HCR is closely related to W CDMA UMTS , and provides the same types of channels where possible. UMTS s High Speed Downlink Packet Access HSDPA High Speed Uplink Packet Access HSUPA enhancements are also implemented under TD CDMA. ref citeweb title IPWireless Ships First Commercial 3GPP Chipset with Full HSDPA Implementation url http www.ipwireless.com news press 020805.html publisher ipwireless.com accessdate 2008 02 28 archiveurl http web.archive.org web 20070927010536 http www.ipwireless.com news press 020805.html Bot retrieved archive archivedate 2007 09 27 ref References reflist Channel access methods telecommunications ca TD CDMA es TD CDMA ...   more details




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