Query Localization Techniques for On-Demand Routing Protocols in Ad Hoc Networks |
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Authors: | Castañeda Robert Das Samir R Marina Mahesh K |
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Institution: | (1) Division of Computer Science, The University of Texas at San Antonio, San Antonio, TX 78249-0667, USA;(2) Department of Electrical & Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221-0030, USA |
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Abstract: | Mobile ad hoc networks are characterized by multi-hop wireless links, absence of any cellular infrastructure, and frequent host mobility. Design of efficient routing protocols in such networks is a challenging issue. A class of routing protocols called on-demand protocols has recently found attention because of their low routing overhead. We propose a technique that can reduce the routing overhead even further. The on-demand protocols depend on query floods to discover routes whenever a new route is needed. Our technique utilizes prior routing histories to localize the query flood to a limited region of the network. Simulation results demonstrate excellent reduction of routing overheads with this mechanism. This also contributes to a reduced level of network congestion and better end-to-end delay performance of data packets. |
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Keywords: | ad hoc networks routing protocols on-demand routing flooding |
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