4G - technology

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Information about 4G - technology
Science-Technology

Published on August 30, 2010

Author: avinashghidora

Source: authorstream.com

Slide 1: A PRESENTATION ON Avinash Ghidora Different Generation : Different Generation 1G (First generation) 2G (Second generation) 3G (Third generation) 4G (Fourth generation) Slide 3: 1G, or First Generation 1G was an analog system, and was developed in the seventies, Cont………… Slide 4: Advance mobile phone system (AMPS) was first launched by the US and is a 1G mobile system. Based on FDMA, it allows users to make voice calls in one country 1G analog system for mobile communications saw two key improvements during the 1970s: - the invention of the microprocessor and the digitization of the control link between the mobile phone and the cell site. Slide 5: 2G, or Second Generation 2G phones using global system for mobile communications (GSM) were first used in the early 1990’s in Europe. GSM provides voice and limited data services, and uses digital modulation for improved audio quality. Cont………… Slide 6: but the demand for fax, short message, and data transmission is growing rapidly. 2G cellular systems include GSM, digital AMPS (D-AMPS), code-division multiple access (CDMA), and personal digital communication (PDC). Multiple digital systems. The development of 2G cellular systems was driven by the need to improve transmission quality, system capacity, and coverage Speech transmission still dominates the airways, Slide 7: 3G, or Third Generation The 3G technology adds multimedia facilities to 2G phones by allowing video, audio, and graphics applications. Over 3G phones, you can watch streaming video or have video telephony. The idea behind 3G is to have a single network standard instead of the different types adopted in the US, Europe, and Asia. Cont………… Slide 8: The main characteristics of IMT-2000 3G systems are: A single family of compatible standards that can be used worldwide for all mobile applications. 2. Support for both packet-switched and circuit-switched data transmission. 3. Data rates up to 2 Mbps (depending on mobility). 4. High spectrum efficiency Telecommunications System (UMTS) or IMT-2000, will sustain higher data rates and open the door to many Internet style applications. Cont………… Slide 9: 3G promises increased bandwidth, up to 384 kbps when the device holder is walking, 128 kbps in a car, and 2 Mbps in fixed applications. A new air interface called enhanced data GSM environment (EDGE) has been developed specifically to meet the bandwidth needs of 3G. EDGE is a faster version of GSM wireless service. FOMA Launched in October 2001, DoCoMo’s Freedom of Multimedia Access (FOMA) service provides fast, high-quality voice and image transmission through packetbased networks. Slide 10: DRAWBACKS BY GENERATION  1G Poor voice quality, Poor battery life, Large phone size, No security, Frequent call drops, Limited capacity and Poor handoff reliability. Slide 11: 2G The GSM is a circuit switched, connection oriented technology, where the end systems are dedicated for the entire call session. This causes inefficiency in usage of bandwidth and resources. The GSM-enabled systems do not support high data rates. They are unable to handle complex data such as video. DRAWBACKS BY GENERATION Slide 12: 3G 1. High bandwidth requirement. 2. High spectrum licensing fees. 3. Huge capital. DRAWBACKS BY GENERATION Slide 13: 4G, or Forth Generation For 1 and 2G standards, bandwidth maximum is 9.6 kbit/sec, This is approximately 6 times slower than an ISDN (Integrated services digital network). Third generation mobile, data rates are 384 kbps (download) maximum, typically around 200kbps, and 64kbps upload. 4G mobile data transmission rates are planned to be up to 100 megabits per second on the move and 1000gigbits per second stationary, this is a phenomenal amount of bandwidth, only comparable to the bandwidth workstations get connected directly to a LAN. Slide 14: What is fourth generation (4G) mobile systems? Fourth generation mobile communications systems that are characterised by high-speed data rates at 20 to 100 Mbps, suitable for high-resolution movies and television, virtual . Initial deployments are anticipated in 2006-2010. Slide 15: 4G : Anytime, Anywhere Connection Also known as ‘Mobile Broadband everywhere’ MAGIC Mobile Multimedia Communication Anywhere, Anytime with Anyone Global Mobility Support Integrated Wireless Solution Customized Personal Service According to 4G Mobile Forum, by 2008 over $400 billion would be invested in 4G mobile projects. Slide 16: 4G: Data rate Facts Transmission at 20 Mbps 2000 times faster than mobile data rates 10 times faster than top transmission rates planned in final build out of 3G broadband mobile 10-20 times faster than standard ADSL services. Companies developing 4G technology Phone Companies: Alcatel, Nortel, Motorola IT Companies: Hughes, HP, LG Electronics Slide 17: WHY 4G? Higher bandwidth enables a range of new applications!! For the consumer Video streaming, TV broadcast Video calls, video clips – news, music, sports Enhanced gaming, chat, location services… For business High speed teleworking / VPN access Sales force automation Video conferencing Real-time financial information Slide 18: 4G SERVICES IN ASIA CDMA (1xEV-DO) Korea: SKT, KTF Japan: AU (KDDI) WCDMA / UMTS Japan: NTT DoCoMo, Vodafone KK Australia: 3 Hutchinson Hong Kong: 3 Hutchinson Slide 19: 4G Realities A recent study by Herschel Shosteck Associates noted that operators that pay large amounts for spectrum will have to charge end users so much that adoption of 3G will be slow. Another study by Strategy Analytics agreed, predicting that, while wireless data revenues will soar, 3G networks will account for less than a quarter of that revenue by 2010. So-called 3G killer apps such as multimedia won't succeed, the second study said. Pent-up demand: Now there's the rub. Even NTT DoCoMo doesn't think there's much pent-up demand among consumers for 3G multimedia services, so it will target its initial 3G offering at business -- and price it accordingly. Slide 20: THANK YOU

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