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WiMAX Introduction

WiMAX Introduction. W orldwide I nteroperability for M icrowave Acc ess The Institute of Electrical and Electronics Engineers (IEEE) 802 committee (802.16 ). Orthogonal Frequency Division Multiplexing (OFDM) (carriers of width of 5MHz or greater can be used )

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WiMAX Introduction

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  1. WiMAX Introduction • Worldwide Interoperability for Microwave Access • The Institute of Electrical and Electronics Engineers (IEEE) 802 committee (802.16 ). • Orthogonal Frequency Division Multiplexing (OFDM) (carriers of width of 5MHz or greater can be used ) • connectivity at speeds up to 70 Mbps • provide high speed access to about 60 businesses at T1 speeds. • can serve up to a thousand homes in term of DSL speed.

  2. How it works?? • WiMAX system consists of two parts: • WiMAX Base Station: Typically, a base station can cover up to 10 km radius. • WiMAX receiver: could be a stand-alone box or a PC card. Several base stations can be connected with one another by backhaul microwave links. wireline backhauling microwave Point-to-Point connection • what would happen if you got WiMAX ?? • Internet service provider • WiMAX base station 10 miles from your home • WiMAX-enabled computer • receive a special encryption code • base station beam data from the Internet to your computer

  3. WiMax vs. WLAN • WiMAX provides a media access control (MAC) layer. • the support of real-time and voice applications is simple • WiMAX proposes the full range of security • Terminal authentication by exchanging certificates to prevent rogue devices • User authentication using the Extensible Authentication Protocol (EAP) • Data encryption using the Data Encryption Standard (DES) or Advanced Encryption Standard (AES) , both much more secure than the Wireless Equivalent Privacy (WEP) used by WLAN

  4. WiMax VS. WiFi • WiFi connection can transmit up to 54Mbps (under optimal conditions) • WiMAX should be able to handle up to 70Mbps • The biggest difference isn't speed!!  • WiFi's range is about 100 feet (30 m) • WiMAX will blanket a radius of 30 miles (50 km) with wireless access • due to the frequencies used and the power of the transmitter. • WiMAX(10-66 GHz frequency) • WiFi(5GHz frequency maximum)

  5. Where can be applied?? • large area public (airports, university campuses,…) • Large numbers of small and medium sized businesses (for lower costs) • High speed internet for areas where wired connectivity is not viable.

  6. Quistions?? Attack

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