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WiMax

WiMax. German Tavrisov Lovander Powell. Overview. Introduction History Application Competing Technologies WiMax Protocol Stack. What is WiMax?. Worldwide Interoperability for Microwave Access OFDMA Performance similar to WiFi with coverage of cellular networks. Standards initiative

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WiMax

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  1. WiMax German Tavrisov Lovander Powell

  2. Overview • Introduction • History • Application • Competing Technologies • WiMax Protocol Stack

  3. What is WiMax? • Worldwide Interoperability for Microwave Access • OFDMA • Performance similar to WiFi with coverage of cellular networks. • Standards initiative • IEEE 802.16

  4. History • 1990s • Telecoms investigate wireless networks for low cost last mile connectivity. • 1999 • IEEE 802.16 • Fixed WiMax • 2001 • WiMax Forum established • 2005 • IEEE 802.16e • Mobile WiMax

  5. Application • Mobile Broadband • Solution to “Last Mile” • Triple Play • Wireless Backhaul

  6. WiMax vs WiFi • MANs vs LANs • High Cost vs Low • Licensed vs Unlicensed • Low speed vs high speed • Mobility • QoS

  7. WiMax vs LTE • Standards based vs Proprietary • Deployment • Backhaul vs Access

  8. WIMAX Protocol Stack

  9. Looking at the PHY Layer Only:

  10. PHY LAYER • OFDM/OFDMA • Modulation and Coding • Data rates

  11. Uplink/Downlink data rates

  12. Security Layer • Basic attacks at the PHY layer • Jamming • and packet scrambling • Security Threats • Man in the middle • Denial of Service(protocol) and (physical) • Security Measures • PKE, EAP,& EAS

  13. AES Encryption

  14. Public Key Infrastructure

  15. EAP based authentication

  16. MAC Layer • Frame Structure • QOS: five classifications -UNGS, rtPs, nrtPs,ertPs,and BE

  17. Frame Structure:MAC Layer

  18. Network Layer • The various IEEE 802.16 • Various ranges of the standard IEEE, d, e, & m • CPN- Customer Premise Network • CSN- Connectivity Service Network • APN- Access Service Network

  19. Network Reference Model

  20. References • [1] What is WIMAX. Wimax.com Broadband Solutions, Inc. [Online]. Available: http://www.wimax.com/general/what-is-wimax • [2] History of WIMAX. Quantum Networks, LLV. [Online]. Available: http://quantumwimax.com/index.php?page=History-of-Wimax • [3] WimaxvsWifi. [Online]. Available: http://freewimaxinfo.com/wimax-vs-wifi-comparison.html • [4] R. Henshaw. Why the wimax vs. LTE battle isn’t a battle. Wimax.com Broadband Solutions, Inc. [Online]. Available: http://www.wimax.com/lte/why-the-wimax-vs-lte-battle-isnt-a-battle • [5] What is IEEE 802.16? Wimax.com Broadband Solutions, Inc. [Online]. Available: http://www.wimax.com/wimax-technologies-standards/what-is-ieee-802.16x • [6] T. Sanders. Fiver Essential Elements of Wimax Security. Wimax.com Broadband Solutions, Inc. [Online]. Available: www.wimax.com/wimax/five-essential-elements-of-wimax-security • [7] P. DeBeasi. Wimax security. Burton Group. [Online]. Available: http://ntsblog.burtongroup.com/network_and-telecom_strat/2008/10 • [8] I. Poole. Wimax mac layer. Adrio Communications Ltd. • [9] AIRCCSE International Journal of Computer Networks and Communications (IJCNC). [Online]. Available: http://airccse.org/journal/ijcnc.html

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