UMTS - UMTS Dr. Bheemarjuna Reddy Tamma IIT Hyderabad...

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UMTS Adapted from Justin Champion Slides Dr. Bheemarjuna Reddy Tamma IIT Hyderabad
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3G UMTS Contents Why 3G UMTS Use of UMTS at the moment
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3G UMTS The Dream (intention) 2G and 2.5G systems are incompatible around the world. Worldwide devices need to have multiple technologies inside of them, i.e. tri-band phones, dual-mode phones To develop a single standard that would be accepted around the world One device should be able to work anywhere ! “Access to Information from Anyplace, Anytime”
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3G UMTS The Dream (continued) Worldwide positioning available Able to pinpoint a device and direct services to it. Mostly to be used for “Push” services Increased data rate Maximum 2048Kbps Operational in Europe by 2002 Japan 2001 (this was achieved) Worldwide usage by 2005 (not happened!)
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3G UMTS The reality Different standards with some operators in America and the rest of the world In the future market forces may move towards a single standard i.e. LTE Difficulties World wide identical available spectrum Agreement on the encoding/decoding technique used Local influence groups Manufacturers who have invested in one technology
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3G UMTS Standard The 3G standard was written by the International Telecommunication Union (ITU) The standard was referred to as IMT-2000 The key to the standards was the available data over the air interface 2Mbps in fixed or in-building environments 384 kbps in pedestrian or urban environments 144 kbps in wide area mobile environments Variable data rates in large geographic area systems (satellite)
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3G UMTS Other parts of the standard Frequency Spectrum Technical Specification Radio and Network components Tariffs and Billing Technical Assistance 3 Main technical implementations were agreed UMTS (W-CDMA)- Europe CDMA2000 - America TD-SCDMA –China
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3G UMTS Universal Mobile Telecommunication system (UMTS) UMTS Builds upon the successful European GSM network Incorporates the developments made for the GPRS and EDGE networks Five areas of standardisation Radio Core Network Terminals Services
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3G UMTS The core network Asynchronous Transfer Method (ATM) Has been defined as the core networking technology ATM allows circuit switched transfer of data using packets. High speed data transfer – currently maximum 10 Gbps
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UMTS - UMTS Dr. Bheemarjuna Reddy Tamma IIT Hyderabad...

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