PowerNap: An Energy Efficient MAC Layer for Random Routing in Wireless Sensor Networks
Venue
IEEE SECON 2011
Publication Year
2011
Authors
Onur Soysal, Sami Ayyorgun, Murat Demirbas
BibTeX
Abstract
Idle-listening is the biggest challenge for energyefficiency and longevity of
multihop wireless sensor network (WSN) deployments. While existing coordinated
sleep/wakeup scheduling protocols eliminate idle-listening for simple traffic
patterns, they are unsuitable to handle the complex traffic patterns of the random
routing protocols. We present a novel coordinated sleep/wakeup protocol POWERNAP ,
which avoids the overhead of distributing complex, large sleep/wakeup scheduling
information to the nodes. POWERNAP piggybacks onto the relayed data packets the
seed of the pseudo-random generator that encodes the scheduling information, and
enables any recipient/snooper to calculate its sleep/wakeup schedule from this
seed. In essence, POWERNAP trades off doing extra computation in order to avoid
expensive control packet transmissions. We show through simulations and real
implementation on TelosB motes that POWERNAP eliminates the idle-listening problem
efficiently and achieves selfstabilizing, low-latency, and low-cost relaying of data
packets for random routing protocols.
