1 / 29

Next generation networks

Next generation networks. 4G Networks. Why 3G is not enough? 4G Business case 4G Networks Intra-nets (core) Inter-nets (network of networks) Role of hot spot services Standardization WWRF: Book of Visions - research areas 4G cases HAPS (Higher Altitude Platform Station)

wyanet
Télécharger la présentation

Next generation networks

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. Next generation networks

  2. 4G Networks • Why 3G is not enough? • 4G Business case • 4G Networks • Intra-nets (core) • Inter-nets (network of networks) • Role of hot spot services • Standardization • WWRF: Book of Visions - research areas • 4G cases • HAPS (Higher Altitude Platform Station) • ITS (Intelligent Transport System)

  3. Why 3G is not enough? • higher rates than 3G can offer (2 Mbit/s - 384 kbit/s - practical rates even 64 kbit/s) are required - especially in hot spots • multirate (DiffServ) & QoS difficult to realize due to unintegrated core - air interfaces • all-IP required - makes applications developed for Internet to apply directly in 3G • interoperability with other networks and new services require more developed security • 3G alone is too expensive and inflexible • new technologies create new services, and increased competition that demand 4G!

  4. 4G Business case • 4G must give more than earlier networking to make it a business case! • creates fashions needs optimized usage of network resources • drives development -new services mustbe created! • - adaptivity • - design optimization -> cost effective design! Equipment • main power-line! Networking participants • - CF* configuration • - unanimous inter-networking • - simple and fair billing • - CF graphical user interface (GUI) • - security *Custom Friendly = adaptive, automated, personalized ...

  5. 4G - network of networks rates mobility 1-100 Mb/s Broadcasting DAB, DVB 64 kb/s - 3 Mb/s Global roaming 2G+, UMTS 1-100 Mb/s Office-wide hot-spots (LANs) DECT, IEEE 802.11 -10 Mb/s Wire replacement networks Bluetooth, IRdA 10-100 Mb/s Body area networks (BANs) IEEE802.15.3, ERM/TG31 flexible Fixed access xDSL+DSM*, ISDN, PSTN mobility 4G technologyexamples rate *DSM: Dynamic Spectrum Management

  6. O&M 3G/4G cores compared 3G • Back compatible to 2G • Circuit and packet switched network • Existing and evolving network coexistence • Weak support for mobility & QoS • User rates up to 2 Mb/s 4G • Extends 3G capacity by the order of magnitude • Entirely packet switched • All digital design • Higher rates up to 100 Mb/s

  7. Main parameters of different internet access systems

  8. Main parameters of different internet access systems (cont.)

  9. Moving from 3G to 4G PHS: Personal Handyphone System (128 kb/s!), see also http://www.3g.co.uk/PR/March2002/3050.htm

  10. 3G and WLANs* • WLAN drawbacks: • 2.4 GHz crowded - interference, especially with Bluetooth (5 GHz band gives relief, next slide) • lack of multi-mode phones • security issues • handovers to GSM would give a competitive edge *Wireless Europe, issue 16, May 2002

  11. Hot-spot capacities compared Range spatial capacity kbps/m2 range 50-500 meters 10-100 meters 10-100 meters few meters

  12. License free bands in different countries • Bands should exist at the same frequencies in different countries to enable global roaming

  13. 4G Standardization • Main organizations • WWRF (Wireless World Research Forum) • IETF (Internet Engineering Task Force) • ETSI (European Telecommunications Standards Institute) • ITU-T (International Telecommunications Union) • Mobile VCE (Virtual Centre of Excellence in Mobile and Personal Communications Ltd) • 4G Mobile forum WWRF workgroups

  14. Wireless World Research Forum • Founded by Alcatel SA, L.M. Ericsson Telephone, Nokia and Siemens AG • Objectives: Combine efforts of UMTS Forum, ETSI, 3GPP, IETF, ITU • Working groups: • WG1 The Human Perspective of the Wireless World • WG2 The Service Architecture for the Wireless World • WG3 New Communication Environment and Heterogeneous Networks • WG4 Spectrum, New Air Interfaces and Ad-hoc Networking

  15. WWRF: Book of Visions

  16. WWRF Timelines for 4G Timelines summarized 2001: 1st Book of Visions 2003: 1st prototypes 2005: Standardization starts 2010: 4G field tests

  17. 4G Architectural trends

  18. 4G Terminals • Requirements • easy to use - services will be accessed! • takes only a little power • Pricing must be simple! • price follows customer classifications • universal terminal - price come from service profiles • adaptive - all services potentially in the same device • Practical terminal design has many interdependent challenges computational power adaptive antennas and MIMO battery lifetime artificial intelligent and pattern recognition system output technologies terminal transmission capacity user input technologies DSP techniques software radio

  19. 4 G business model Cash flow 4G 2G+ & 3G 2. 4. time 3. 1. 1. Lower start-up cost 2. Quicker return-of-investment 3. Faster time-to-market/profits 4. Higher revenue potential (cost- effective, on-demand, up-to-date service development)

  20. High Altitude Stratospheric Platform Station Systems* (HAPS) • ~20 km height • balloons or planes (HeliNet) • BW=600 MHz • fc= 47 GHz • rates: 25 Mb/s… hundreds of Mb/s *see also http://www.skystation.com/sts.html

  21. HAPS summarized • Benefits • versatile: multitude of services in different locations. (2G->) Also, new services • broadband, also to moving stations • cost-effective • Open issues • most feasible technology? • demo missing - first follows in PIMRC'02 • reliability in harsh environment • service availability (rain attenuation, depends on radio frequencies)

  22. Intelligent Transport System* (ITS) http://www.piarc.lcpc.fr/ - Tele-services - Improved safety - Improved traffic efficiency and reduced congestion - Improved environmental quality and energy efficiency - Improved economic productivity http://www.itsa.org/ see also: IEEE Transactions on Intelligent Transportation Systems

  23. ITS summarized • Provide multimedia for drivers & passengers • Solving problems such as traffic accidents & congestion • Development areas: navigation, electronic tolls, assistance for safe driving … • Telecomm development: road-vehicle communications, inter-vehicle communications • Modems along roadsides using optical fibers by Radio on Fiber (ROF) technology or at 5.4 GHz band • Some international projects: • German ministry for education and research: COMCAR • IP based multimedia & telematics • applies GSM, UMTS, DVB, GPS ... • EU-project: Multimedia Car Platform (MCP) • Communications, navigation, entertainment ...

  24. 4G framework summarized

  25. Abdi R. Modarressi, Seshadri Mohan: Control and Management in Next-Generation Networks: Challenges and Opportunities, IEEE Communication Magazine, Oct 2001 Stan Moyer and Amjad Umar: The Impact of Network Convergence on Telecommunications Software, IEEE Communication Magazine, Jan 2001 Helmut Bölcskei, Arogyaswami J. Paulraj, K. V. S. Hari, and Rohit U. Nabar, Willie W. Lu: ‘Fixed Broadband Wireless Access: State of the Art, Challenges, and Future Directions’, IEEE Communication, Jan 2001 Werner Mohr and Walter Konhäuser: Access Network Evolution Beyond Third Generation Mobile Communications, IEEE Communication Magazine, Dec 2000 Qi Bi, George I. Zysman, and Hank Menkes: Wireless Mobile Communications at the Start of the 21st Century, IEEE Communication Magazine, Jan 2001 Shingo Ohmori, Yasushi Yamao and Nobuo Nakajima: The Future Generations of Mobile Communications Based on Broadband Access Technologies, IEEE Communication Magazine, Dec 2000 Toru Otsu et al: Network Architecture for Mobile Communications Systems Beyond IMT-2000, IEEE Communications Magazine, Oct. 2001 http://www.radio.gov.uk/document/consult/5ghz/5ghz.htm http://protocols.com/papers/voip.htm http://www.cnp-wireless.com/PCS.html http://www.etsi.org/brochures/stateart/olanders.htm References References Http://www.dectnet.com http://www.zdnet.com/anchordesk/story/story_4439.html http://http.cs.berkeley.edu/~gribble/summaries/wireless/wlan_design.html http://rpcp.mit.edu/~gingold/cable/ http://www.etsi.org/technicalactiv/hiperlan1.htm http://webapp.etsi.org/tbhomepage/TBDetails.asp?TB_ID=287&TB_NAME=BRAN, http://www.etsi.org/technicalactiv/hiperlan2 http:// www.atmforum.com http://www.wirelesscomm.globalsources.com http://global.ihs.com http://grouper.ieee.org/groups/802/15/ WPAN http://users.ece.gatech.edu/~jxie/4G/index.html http://www.telecommagazine.com/ http://www.adsl.com/dsl_forum.html http://www.ezweb.ne.jp/

More Related