Show simple item record

dc.contributor.authorJun, Hyewonen_US
dc.contributor.authorZhao, Wenrui
dc.contributor.authorAmmar, Mostafa H. (Mostafa Hamed)
dc.contributor.authorZegura, Ellen W.
dc.contributor.authorLee, Chungki
dc.date.accessioned2005-06-17T17:36:24Z
dc.date.available2005-06-17T17:36:24Z
dc.date.issued2004en_US
dc.identifier.urihttp://hdl.handle.net/1853/6498
dc.description.abstractPower management is a critical issue in wireless ad hoc networks where the energy supply is limited. In this paper, we investigate a routing paradigm, Message Ferrying (MF), to save energy while trading off data delivery delay. In MF, special nodes called ferries move around the deployment area to deliver messages for nodes. The reliance on the movement of ferries to deliver data increases the delivery delay. However, nodes can save energy by disabling their radios when ferries are far away. To exploit this feature, we present a power management framework, in which nodes switch their power management modes based on the knowledge of ferry location. We evaluate the performance of our scheme using ns-2 simulations and compare it with Dynamic Source Routing (DSR). Our simulation results show that MF achieves energy savings as high as 95% compared to DSR without power management and still delivers more than 98% of data. In contrast, a power-managed DSR delivers much less data than MF to achieve similar energy savings. In the scenario of heavy traffic load, the power-managed DSR delivers less than 20% of data. MF also shows robust performance for highly mobile nodes, while the performance of DSR suffers significantly. Thus, delay tolerant applications should use MF rather than a multihop routing protocol to save energy efficiently when both routing approaches are available.en_US
dc.format.extent179220 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.relation.ispartofseriesCC Technical Report; GIT-CC-04-13en_US
dc.subjectWireless networks
dc.subjectMessage ferrying
dc.subjectPower management
dc.titleTrading Latency for Energy in Wireless Ad Hoc Networks using Message Ferryingen_US
dc.typeTechnical Reporteng_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record