A coalitional game model for spectrum pooling in wireless data access networks

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Departmental Papers (ESE)
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coalitional game model
geographical region
revenue sharing concept
service level agreement
spectrum pooling
user satisfaction
utility function
wireless data access network
game theory
radio access networks
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Singh, Chandramani
Kumar, Anurag

We consider a setting in which several operators offer downlink wireless data access services in a certain geographical region. Each operator deploys several base stations or access points, and registers some subscribers. In such a situation, if operators pool their infrastructure, and permit the possibility of subscribers being served by any of the cooperating operators, then there can be overall better user satisfaction, and increased operator revenue. We use coalitional game theory to investigate such resource pooling and cooperation between operators.We use utility functions to model user satisfaction, and show that the resulting coalitional game has the property that if all operators cooperate (i.e., form a grand coalition) then there is an operating point that maximizes the sum utility over the operators while providing the operators revenues such that no subset of operators has an incentive to break away from the coalition. We investigate whether such operating points can result in utility unfairness between users of the various operators. We also study other revenue sharing concepts, namely, the nucleolus and the Shapely value. Such investigations throw light on criteria for operators to accept or reject subscribers, based on the service level agreements proposed by them. We also investigate the situation in which only certain subsets of operators may be willing to cooperate.

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Copyright 2008 IEEE. Reprinted from: Sarkar, S.; Singh, C.; Kumar, A., "A coalitional game model for spectrum pooling in wireless data access networks," Information Theory and Applications Workshop, 2008 , vol., no., pp.310-319, Jan. 27 2008-Feb. 1 2008 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4601066&isnumber=4601007 This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
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