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发表于 2007-3-30 13:29:29
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A Stream-Oriented Power Management Protocol for Low Duty Cycle Sensor Network Applications
Abstract
Most power management protocols are packet-based and optimize
for applications with mostly asynchronous (i.e. unexpected)
traffic. We present AppSleep, a stream-oriented power
management protocol for latency tolerant sensor network applications.
For this class of applications, AppSleep demonstrates
an over 3x lifetime gain over B-MAC and SMAC. AppSleep leverages
application characteristics in order to take advantage of
periods of high latency tolerance to put the network to sleep for
extended periods of time, while still facilitating low latency responses
when required. AppSleep also gives applications the
flexibility to efficiently and effectively trade latency for energy
when desired, and enables energy efficient multi-fragment unicast
communication by only keeping the active route awake. We
also present Adaptive AppSleep, an application driven addition
to AppSleep which supports varying latency requirements while
still maximizing energy efficiency. Our evaluation demonstrates
that for an overlooked class of applications, stream-oriented
power management protocols such as AppSleep outperform
packet-based protocols such as B-MAC and S-MAC. |
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