1 / 19

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.

artemas-kristy
Télécharger la présentation

A Study of Next Generation of Mobile Telecommunication

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related