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A Study of Next Generation of Mobile Telecommunication

A Study of Next Generation of Mobile Telecommunication. Name: Lee, Jungwon Prof.: Dr. Chang CS898t Mobile Communication. Content. History of Mobile Communication 2G Mobile (Comparison Between CDMA & GSM) 3th Generation Mobile Standards 4G Mobile 4G Vision and Scope.

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A Study of Next Generation of Mobile Telecommunication

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  1. A Study of Next Generation of Mobile Telecommunication Name: Lee, Jungwon Prof.: Dr. Chang CS898t Mobile Communication Wichita State University Computer Science

  2. Content • History of Mobile Communication • 2G Mobile (Comparison Between CDMA & GSM) • 3th Generation Mobile Standards • 4G Mobile • 4G Vision and Scope Wichita State University Computer Science

  3. History of Mobile Communication Wichita State University Computer Science

  4. 2G of Mobile Communication • GSM (Global System for Mobile Communication) • Groupe Spécial Mobile (GSM) to study and develop a pan­European public land mobile system • Deployed in mid 1991 in Europe • IS-95 (CDMA) • Idea from military & Developed by Qualcomm • Using CDMA (Code Division Multiple Access) • One Frequency all the time Wichita State University Computer Science

  5. Comparison Between CDMA & GSM Comparison between CDMA and GSM Standard Fig. 1 Wichita State University Computer Science

  6. 3G Mobile Communication (WCDMA & CDMA2000) • Promise of 3G • Subscriber can access WWW (World Wide Web) • High speed data transfer – 133Kbps(high mobility), 384Kbps(restrict mobility), 2Mbps(indoor) • Messaging – email, fax, etc. • Medium-rate multimedia – Internet access, educational • High-rate multimedia – file transfer, video • High-rate interactive multimedia – video teleconferencing, telemedicine, etc. • Mobility: quasi-stationary to high-speed platforms • Global roaming: ubiquitous, seamless coverage • Evolution from second generation systems Wichita State University Computer Science

  7. Overview of WCDMA • WCDMA (Wideband CDMA) • Became to standard for IMT-2000 in 1998 by ITU (International Telecommunication Union) • Developed from GSM/GPRS • WCDMA handles up to 2 Mbps for local area access or 384 Kbps for wide area access. • GSM to WCDMA, protecting investments by re-using the GSM core network and 2G/2.5G services • Wideband direct-sequence spreading • 3.84 Mcps chip rate • Spreading gains (ratios) from 4 to 512 Wichita State University Computer Science

  8. Overview of WCDMA Cont. Wichita State University Computer Science

  9. CDMA2000 Family • 1xEV-DO and 1xEV-DV are both backward compatible with CDMA2000 1X • CDMA2000 1X • First commercial CDMA2000 1X launched at South Korea in 2000. • 144 Kbps data transfer rate • CDMA2000 1X EV/DO (Data only) • True 3G mobile network • Data transfer rate - 2.4 Mbps and average should be 621 Kbps • CDMA2000 1X EV/DV (Data & Video) • EV/DV technology is still in research area • CDMA2000 1xEV/DV provides integrated voice and simultaneous high-speed packet data multimedia services at speeds of up to 3.09 Mbps. Wichita State University Computer Science

  10. CDMA2000 Family Cont. Wichita State University Computer Science

  11. WCDMA Vs. CDMA2000 • There are too many opinion between these two standards Wichita State University Computer Science

  12. 4G Mobile Telecommunication • Promise of 4G • Support terminal and personal mobility • Flexible roaming and hand-over supported • To other different systems and networks • Efficient support of various services • Including symmetrical and asymmetrical services • (Broadcast and distribution services) • Maintaining QoS (comparable with wire-line network) • Target mobility and information bit rates • 2 Mbps (250 Km/h) • 20 Mbps (60 Km/h) • 100 Mbps (3 Km/h) Wichita State University Computer Science

  13. 4G Mobile Telecommunication Cont. • Promise of 4G • Economic deployment of systems • With optimized radio interfaces • Among macro cells, micro cells, indoor, hot spots and • broadcast networks • To accommodate mixed-mode multi-standard services • To employ any future services • Why needs 4G • Maximum data rate in the air (3G) • 2Mbps • Separate Core Networks • Voice Core Networks • Data Core Networks • Non-perfect global roaming supported Wichita State University Computer Science

  14. 4G Vision (ITU) Wichita State University Computer Science

  15. Idea of 4G Wichita State University Computer Science

  16. 4G Technology • OFDM (Orthogonal Frequency Division Multiplex) • Technology that transmits data simultaneously over a large number of channels at different frequencies, enable to send an large data • Using in IEEE 802.11a & g, Hiper-LAN II and IEEE 820.16 BWA • Smart Antenna • A smart antenna system combines multiple antenna elements with a signal-processing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment. • Amplify the frequency to user who wants to communicate • Can adopt to OFDM & SDR Wichita State University Computer Science

  17. 4G Technology Cont. • SDR (Software Defined Radio) • From military research (SPEAKeasy Project) • SDR technology is enabling frequencies and communications methods and to be changed flexibly by means of software. It responses to Internet Protocol version 6 (IPv6). • MBMMR forum (MultiBand,MultiMode, Radio) • Still in research area Wichita State University Computer Science

  18. Roadmap of 4G Next Generation Mobile Communication (Ichiro) Wichita State University Computer Science

  19. Question? Wichita State University Computer Science

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