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Wireless
nodes are severely energy-constrained
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Typically
operated using a battery of finite capacity
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Limited
to no opportunity for energy scavenging
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Nodes
in multihop wireless networks cooperate by routing packets
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Lots
of research interest/proposed protocols, some standards approved by IETF
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(AODV,
DSR, TBRPF, OLSR)
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Routing
metrics: shortest hop (best effort), QoS routing (max throughput, min
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delay),
load balanced routing, energy-efficient routing
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Sources
of energy consumption
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Radio
consumes bulk of energy (more than say CPU or disk)
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Radio:
Transmit > Receive > Idle >> Sleep
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