| TCP and Mobile
Computing |
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| – | TCP
is (most?) popular transport layer protocol |
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| – | designed
for wired networks |
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| n | low
error rate |
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| n | requirement
to share bottlenecks |
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| – | key
assumptions in TCP are: |
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| n | packet
loss is indication of congestion, not transmission error |
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| n | rather
aggressive response to congestion is needed to ensure |
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| fairness
and efficiency |
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| – | wireless
links and mobile computing violate these |
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| assumptions: |
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| n | packets
lost due to unreliable physical media |
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| n | packets
can get lost due to handover |
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