… when will 5 GHz WLANs come?

νIEEE802.11b (2.4 GHz) is now taking over the market.

νThere are developments to enhance IEEE802.11b for

more bandwidth (up to 54 Mbit/s)

QoS (despite many applications do not need QoS at all)

network issues (access control and handover).

ν5 GHz systems will be used when the 2.4 GHz ISM band will become too overcrowded to provide sufficient service.

TCP/IP based applications are usually very resilient against ‘error proune’ networks.

νIssues of 5 GHz systems:

Cost: 5 GHz is more expensive than 2.4 GHz

Power: 7dB more transmission power for same distance

Compatibility to IEEE802.11b/g necessary

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt

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© Siemens, 2002

 

 

 

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Siemens IEEE802.11 manual … when will 5 GHz WLANs come?, Issues of 5 GHz systems