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| – |
wireless
communication is substantially different from
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wired
communication:
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n |
frequent
spurious disconnections (handoff, shadowed areas)
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n |
lower
bandwidth (GSM, CDPD: less than 20 kbps)
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n |
high
bandwidth variability (roaming outdoors vs. plugged into
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docking
station)
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n |
heterogeneous
networks (outdoors: cellular, indoors: infrared
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LAN)
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n |
security
risks (everyone can listen in on wireless channel)
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mobility:
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n |
address
migration (e.g., location management)
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n |
location
dependent information (where is closest printer?)
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n |
migrating
locality (optimal connection changes over time)
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