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Wireless

Wireless. 802.11. IEEE standard for wireless 802.11 802.11a 802.11b 802.11g 802.11n. 802.11a (1999). 802.11a speed 54 Mb/s & frequency of 5 GHz Used by G overnment buildings Older style networks. 802.11b (1999). 802.11b speed 11 Mb/s & frequency of 2.4 GHz U sed by

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Wireless

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  1. Wireless

  2. 802.11 • IEEE standard for wireless • 802.11 • 802.11a • 802.11b • 802.11g • 802.11n

  3. 802.11a (1999) • 802.11aspeed • 54 Mb/s & frequency of 5 GHz • Used by • Government buildings • Older style networks

  4. 802.11b (1999) • 802.11b speed • 11 Mb/s & frequency of 2.4 GHz • Used by • Legacy equipment

  5. 802.11g (2003) • 802.11g speed • 54 Mb/s & frequency of 2.4 GHz • Used by

  6. 802. 11n (2009) • 802.11n speed • 54 Mb/s to 600 Mb/s • frequency 2.4 & 5 GHz • Used by

  7. Did you notice something? • 802.11a (1999) • 802.11a speed • 54 Mb/s & frequency of 5 GHz • 802.11g (2003) • 802.11g Speed? • 54 Mb/s & frequency of 2.4 GHz

  8. Band 2.4 VS 5 GHz • What other devices use 2.4 GHz? • Bluetooth • Microwave oven • Remote of any kind(not inferred ) • Cordless phones • TV antennas • What other devices use 5 GHz?

  9. 5 GHz • Why don’t we use 5 GHz as much? • Limited support by devices • Limited range • Higher cost

  10. Bluetooth • What is Bluetooth? • Just another wireless device that uses 2.4 GHz! • Short range device (98 feet) • What is so special about Bluetooth? • Introduces Wireless PAN Networks • Pare twodevices for master-slave type communication

  11. 802.15 Or P.A.N • Concept • Everyone has a small style network • Once a network collide with another you are able to share data if permitted. • What devices are considered a Pan? • Bluetooth (PS3 controller) • Infrared (GBA, controller remotes)

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