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Wireless Internet Examples from the real world

Wireless Internet Examples from the real world. John M. Brown iHighway.net, Inc. john@ihighway.net (505-346-5000. Overview. Why Wireless Types of Technology Typical Installation Equipment Costs Problems / troubleshooting. Why Wireless ? . Better total Control of the Network

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Wireless Internet Examples from the real world

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  1. Wireless Internet Examples from the real world John M. Brown iHighway.net, Inc. john@ihighway.net (505-346-5000

  2. Overview • Why Wireless • Types of Technology • Typical Installation • Equipment • Costs • Problems / troubleshooting

  3. Why Wireless ? • Better total Control of the Network • Remove telco from the picture • Increase Direct ISP Revenues • Install in less than 10 days, start revenue flow • Cheaper bandwidth

  4. Types of Technology • Licensed and UN-licensed radios • UN-licensed uses (No FCC permit needed) • 900 MHz, 2400 MHz or 5560 MHz • Spread Spectrum, either FH or DS • Licensed is expensive and requires permits

  5. Typical Installation • Equipment • Two or more radios • Antennas (depend on install requirements) • Antenna Mount (skid, pole, wall mount, etc) • COAX Cable 50 Ohm LMR400 or LMR 600 • RP-TNC and N style connectors • Crimp and Soldering tools

  6. Typical Installation • Before you install, DO A SITE SURVEY • Plot on a good map your LOS • Use a hand held GPS to get coordinates • Use a good spotting scope and find the other end • Look for other antennas on near by buildings • If Avail, use a spectrum analyzer • Do your Loss and Distance Calculations

  7. Typical Installation • Make sure you follow local code and ord’s • Make sure you know the T&C’s for communities, gated, etc. • Adjust your AUP and or T&C’s to reflect • not responsible for WX issues (lightning,etc) • not responsible for interference • MTBR for down links can vary, have spare parts

  8. Typical Installation • Do a “Test Install” first: • take a 4-6 foot pole and attach a 23dBi dish • connect to radio and search for other end • verify connectivity quality and strength • note general heading of antenna • note elevation (did you have to lift it up, etc) • now try antenna you plan to use

  9. Typical Installation • Most important part of install (Antenna) • Make sure the mount is STRONG • Will NOT move in wind (antenna loads are high) • Well grounded, ground rod or similar • COAX is tied down with gentle sweeps • Lightning arresting equipment is grounded • Use a rubber mat for skids, to protect roof

  10. Typical Installation • Keep COAX length S H O R T • No more than 100 feet • Extend reach on the Ethernet Side • Use FIBER to extend reach • Not affected by “plant / electrical noise” • Wonderful lightning protection

  11. Typical Installation • Tape and secure ALL connections • Use 3M All Weather Tape • NOT Electrical tape or duct tape • Use BLACK Nylon Ties • White ones will break down in UV • If able, place COAX in conduit for protection

  12. Antenna on roof top #1

  13. Antenna on roof #2

  14. Types of Antenna’s (Grid Dishes)

  15. Types of Antenna’s (Panel Mount)

  16. Installation Examples • Normal Installs • Strange Installs • Side Lobe RF Shielding

  17. Interference from other buildings • Major building areas are big potential for problems

  18. Interference requires modifications • Depending on the problem you can construct shields to block interference • The following couple of slides show one such shield that was build in about 60 min.

  19. Before shield was added

  20. After shield was added

  21. Another shot of the shield

  22. Equipment Costs • Radio Units typically cost (MSRP) • 1-2 Mbps $1995 • 1-11 Mbps $2395 • Antenna’s typically cost (MSRP) • Panel Mounts $295 • Grid Dishes $295 - $495 • Cable and hardware: $300 to $700

  23. Troubleshooting / Problems • Interference from other ISM/SS devices • Weather (Rain, Snow, WIND, T-Storms) • DoE Labs doing something funky • Wind • Frequency Congestion

  24. Troubleshooting / Problems • When troubleshooting: • try slower speeds • try different frequency ranges • verify connections • verify lightning arrest equipment • know your environment • Buildings along the path (new installs by others)

  25. Troubleshooting / Problems • Wind was our biggest problem • dish loads can exceed 200 LBS. • Make sure you guy wire with heavy cable • you don’t want it to move around at all • use turnbuckles on guy’s to tighten up

  26. Troubleshooting / Problems • Remember most products are OSI L2 • Broad/multi casts will be flooded over WAN • Filter tools are limited and or poor

  27. Troubleshooting / Problems • Interference can cause: • Packet loss because of poor queue depth • Packet resends • higher latency because of resends

  28. Overall Feedback • Customers like the wireless • Saves them money • We like wireless because • Revenue stream not dependant on telco install • higher bandwidth, one time cost • better and more revenue in our pockets. • Better control over our network, end to end.

  29. Potential markets • Multi-tenant office buildings • Wireless to roof, Ethernet down building riser • Office Park’s • Residential Communities • Per PC costs are around $600 to 700 or less

  30. Thank you • I want to say Thank you to • Lucy, Randy and the entire U Oregon team and Verio for a most excellent NANOG.

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