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Wireless Technology

Wireless Technology. Rod Harris & Roger White Chemeketa Community College Salem, Oregon. Wireless Networking Today. Home Networking SOHO Networking Enterprise Networking Wireless Network Security. Access-Points Bridges Switches Routers Antennas Client Adaptors. Laptops PDAs Phones

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Wireless Technology

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  1. Wireless Technology Rod Harris & Roger White Chemeketa Community College Salem, Oregon

  2. Wireless Networking Today • Home Networking • SOHO Networking • Enterprise Networking • Wireless Network Security

  3. Access-Points Bridges Switches Routers Antennas Client Adaptors Laptops PDAs Phones Printers Desktop PCs Bar Code Scanners Typical Wireless Devices

  4. Cisco Wireless Devices Recommended for Wireless Curriculum Aironet 1300 Series Bridge Aironet 1200 Series Access-Point Aironet 1100 Series Access-Point Yagi mast or wall mount Antenna Diversity omnidirectional ceiling mount Antenna 2.2-dBi dipole antenna Omnidirectional mast mount Antenna Cisco Client Adapters

  5. Linksys - SOHO Wireless Devices WAP54GWireless-G Access Point WRT54GWireless-G Broadband Router WRT300NWireless-N Broadband Router WAP4400NWireless-N Access Point with Power Over Ethernet WPC54GWireless-G Notebook Adapter WMP54GWireless-G PCI Adapter WUSB54GCCompact Wireless-G USB Adapter WPC300NWireless-N Notebook Adapter

  6. Access Point Wireless Laptop Wireless Laptop PC with Wireless Card WirelessRouter Wired Infrastructure Backbone Access Point PC with Wireless Card Wireless Laptops Typical Application of Access-Points

  7. Wireless Bridge Wireless Bridge Applications

  8. IEEE 802.11 Standards - Wireless • IEEE 802.11a, provides 54Mbps data rate at 5GHz. • IEEE 802.11b, or Wi-Fi, has a maximum data rate of 11Mbps, at 2.4GHz. • IEEE 802.11g, provides 54Mbps data rate at 2.4GHz. • IEEE 802.11n, aproposed standard to provide 540 Mbps data rate at 2.4 GHz or 5 GHz, usingMIMO (Multiple-In, Multiple-Out) • MIMO transmits two or more data streams in the same radio channel at the same time. • With MIMO, the maximum data rate per channel grows linearly with the number of different data streams that are transmitted in the same channel.

  9. 6 6 6 1 1 1 1 11 11 11 802.11b & g Extended Geographic Coverage using 3 - Channel Layout Three non-overlapping channel frequencies in a non-adjacent configuration allows maximum coverage of a geographic area without cross channel interference and ensures complete RF coverage. Channels 1, 6, and 11 most popular configuration for this type of layout. Other combinations are possible.

  10. Typical Site Survey Process • Obtain floor plan / campus site map • Visually inspect the floor plan • Identify user areas on the floor plan • Identify potential problems areas on floor plan • Identify Access-Point locations and Antenna types • Document all findings

  11. Typical Site Survey Tools • Laptop or PDA with Wireless adaptor • Site Survey Software for Wireless • Access-Points • RF Analyzer • Two-Way Communication Devices • Antennas – Variety of types • Distance measuring devices • Handheld GPS device with cordinence measurement capabilities

  12. Campus Map used for Site Surveys

  13. CISCO ACADEMY STANDARD EQUIPMENT BUNDLEFWL - Ver 1.2as of - 30 Nov 2005

  14. END

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