Lee, Jang-Won and Tang, Ao and Huang, Jianwei and Chiang, Mung and Calderbank, A. Robert (2007) Reverse-Engineering MAC: A Non-Cooperative Game Model. IEEE Journal on Selected Areas in Communications, 25 (6). pp. 1135-1147. ISSN 0733-8716 http://resolver.caltech.edu/CaltechAUTHORS:LEEieeejsac07
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This paper reverse-engineers backoff-based random-access MAC protocols in ad-hoc networks. We show that the contention resolution algorithm in such protocols is implicitly participating in a non-cooperative game. Each link attempts to maximize a selfish local utility function, whose exact shape is reverse-engineered from the protocol description, through a stochastic subgradient method in which the link updates its persistence probability based on its transmission success or failure. We prove that existence of a Nash equilibrium is guaranteed in general. Then we establish the minimum amount of backoff aggressiveness needed, as a function of density of active users, for uniqueness of Nash equilibrium and convergence of the best response strategy. Convergence properties and connection with the best response strategy are also proved for variants of the stochastic-subgradient-based dynamics of the game. Together with known results in reverse-engineering TCP and BGP, this paper further advances the recent efforts in reverse-engineering layers 2-4 protocols. In contrast to the TCP reverse-engineering results in earlier literature, MAC reverse-engineering highlights the non-cooperative nature of random access.
|Additional Information:||© Copyright 2007 IEEE. Reprinted with permission. Manuscript received July 1, 2006; revised February 15, 2007. [Posted online: 2007-07-23] This work was supported in part by NSF Grants CNS-0430487, CCF-0440443, CNS-0417607, CCF-0448012, and CNS-0427677. Parts of the results have been presented at IEEE INFOCOM 2006 and IEEE WiOpt 2006. We appreciate the helpful discussions with Steven Low and Lijun Chen at Caltech and Amir Hamed Mohsenian Rad from University of British Columbia.|
|Subject Keywords:||Wireless network, Ad hoc network, Medium access control, Mathematical programming/optimization, Network utility maximization, Game theory, Network control by pricing, Reverse-engineering|
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|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||02 Sep 2007|
|Last Modified:||26 Dec 2012 09:40|
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