Performance Analysis of Location-Based Data Consistency Algorithms in Mobile Ad Hoc Networks
December 2004
Ing-Ray Chen, Department of Computer Science, Virginia Tech
Jeffery W. Wilson, Department of Computer Science, Virginia Tech
Frank Driscoll, The MITRE Corporation
Karen Rigopoulos, The MITRE Corporation
ABSTRACT
Many applications of mobile ad hoc networks require real-time data consistency among the moving nodes within a geographical area of interest to function correctly, e.g., battlefield command and control applications. While it is operationally desirable to maintain data consistency among nodes within a large geographical area, the time required to propagate state changes to all mobile nodes in that geographical area limits its size. This paper investigates the notion of location-based data consistency in mobile ad hoc networks, and analyzes the tradeoff between data consistency and timeliness of data exchange among nodes within a location-based group in a geographical area of interest. By utilizing a Petri net performance model, we analyze performance characteristics of location-based data consistency maintenance algorithms and identify design conditions under which the system can best tradeoff consistency for timeliness (reflecting the time to propagate a state change) while satisfying the imposed data consistency requirement, when given a set of parameters characterizing the application in the underlying mobile ad hoc network environment.
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