Title

Finding Threshold Conditions For Different Objectives In Sensor Networks Using Game Theory

Abstract

Efficient energy usage is one of the most important issues in infrastructure-less wireless sensor networks. An effective way to limit unnecessary energy loss is to control the power of transmission. In this paper, we present a game-theoretic approach to tackle the power control problem in CDMA based distributed sensor networks. We consider two complimentary objectives for the network i) longevity and ii) reliability. Depending on the task of the network, the end-user can program the input parameters so that the network achieves one of the objectives. We formulate a non-cooperative game and study the existence of Nash equilibrium for the nodes operating under incomplete information. With the help of this equilibrium, we devise a distributed algorithm for optimal power control and prove that the system is power stable if the nodes comply with certain transmit thresholds. We show that it is in the best interest of the nodes to remain within these thresholds. The power level at which a node must transmit, to maximize its utility, is also evaluated. Numerical results prove that with the proposed algorithm, the sensor nodes are able to achieve the best possible utility even by consuming less power.

Publication Date

12-1-2006

Publication Title

International Symposium on Performance Evaluation of Computer and Telecommunication Systems 2006, SPECTS'06, Part of the 2006 Summer Simulation Multiconference, SummerSim'06

Number of Pages

73-79

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84870013519 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84870013519

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