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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 - PowerPoint PPT Presentation
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WIMAXGerman TavrisovLovander 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
• IEEE 802.16
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
• Mobile Broadband
• Solution to “Last Mile”
• Triple Play
• Wireless Backhaul
WiMax vs WiFi• MANs vs LANs• High Cost vs Low• Licensed vs Unlicensed • Low speed vs high
speed• Mobility• QoS
WiMax vs LTE
• Standards based vs Proprietary • Deployment• Backhaul vs Access
WIMAX Protocol Stack
Looking at the PHY Layer Only:
PHY LAYER
• OFDM/OFDMA
• Modulation and Coding
• Data rates
Uplink/Downlink data rates
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
Public Key Infrastructure
EAP based authentication
MAC Layer
• Frame Structure• QOS: five classifications
-UNGS, rtPs, nrtPs,ertPs,and BE
Frame Structure:MAC 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
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] Wimax vs Wifi. [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