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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

WiMax

German Tavrisov

Lovander Powell


Overview

Overview

  • Introduction

  • History

  • Application

  • Competing Technologies

  • WiMax Protocol Stack


What is wimax

What is WiMax?

  • Worldwide Interoperability for Microwave Access

  • OFDMA

  • Performance similar to WiFi with coverage of cellular networks.

  • Standards initiative

    • IEEE 802.16


History

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


Application

Application

  • Mobile Broadband

  • Solution to “Last Mile”

  • Triple Play

  • Wireless Backhaul


Wimax vs wifi

WiMax vs WiFi

  • MANs vs LANs

  • High Cost vs Low

  • Licensed vs Unlicensed

  • Low speed vs high speed

  • Mobility

  • QoS


Wimax vs lte

WiMax vs LTE

  • Standards based vs Proprietary

  • Deployment

  • Backhaul vs Access


Wimax protocol stack

WIMAX Protocol Stack


Looking at the phy layer only

Looking at the PHY Layer Only:


Phy layer

PHY LAYER

  • OFDM/OFDMA

  • Modulation and Coding

  • Data rates


Uplink downlink data rates

Uplink/Downlink data rates


Security layer

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


Aes encryption

AES Encryption


Public key infrastructure

Public Key Infrastructure


Eap based authentication

EAP based authentication


Mac layer

MAC Layer

  • Frame Structure

  • QOS: five classifications

    -UNGS, rtPs, nrtPs,ertPs,and BE


Frame structure mac layer

Frame Structure:MAC Layer


Network layer

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


Network reference model

Network Reference Model


References

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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