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Title:Exploiting Routing Redundancy using MAC layer Anycast to Improve Delay in WSN
Author(s):Ashraf, Farhana; Kravets, Robin; Vaidya, Nitin H.
Subject(s):Wireless Sensor Networks
end-to-end delay
Abstract:Source-destination pairs in wireless sensor networks often have multiple shortest hop paths because the nodes are densely deployed. These multiple paths provide a great opportunity to reduce delay as well as energy in an asynchronous duty-cycled network. In this paper, we exploit the redundancy available at the route layer using MAC-layer anycasting and reduce the delay incurred at each hop as the sender waits for its next hop node to be awake. By applying anycast to existing X-MAC and NPM protocols, we show that anycast can be incorporated into duty-cycled MAC protocols by using small modifications. Our evaluations in ns-2 show that the modified X-MAC and NPM protocols can achieve delay improvements of 30% and 12% respectively by exploiting the route level redundancy using anycast.
Issue Date:2010-11-20
Genre:Technical Report
Publication Status:unpublished
Peer Reviewed:is peer reviewed
Sponsor:NSF CNS 05-19817
Date Available in IDEALS:2010-11-21

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