DocumentCode :
3649341
Title :
Competition in femtocell networks: Strategic access policies in the uplink
Author :
Ali Khanafer;Walid Saad;Tamer Başar;Mérouane Debbah
Author_Institution :
Coordinated Science Laboratory, University of Illinois at Urbana-Champaign, USA
fYear :
2012
fDate :
6/1/2012 12:00:00 AM
Firstpage :
5070
Lastpage :
5074
Abstract :
In emerging small cell wireless, each femtocell access point (FAP) can either service its home subscribers exclusively (i.e., closed access) or open its access to accommodate a number of macrocell users so as to reduce cross-tier interference. In this paper, we propose a game-theoretic framework that enables the FAPs to strategically decide on their uplink access policy. We formulate a noncooperative game in which the FAPs are the players that want to strategically decide on whether to use a closed or an open access policy in order to maximize the performance of their registered users. Each FAP aims at optimizing the tradeoff between reducing cross-tier interference, by admitting macrocell users, and the associated cost in terms of allocated resources. Using novel analytical techniques, we show that the game always admits a pure strategy Nash equilibrium, despite the discontinuities in the utility functions. Further, we propose a distributed algorithm that can be adopted by the FAPs to reach their equilibrium access policies. Simulation results show that the proposed algorithm provides an improvement of 85.4% relative to an optimized open access scheme in the average worst-case FAP utility.
Keywords :
"Games","Manganese","Interference","Macrocell networks","Vectors","Resource management"
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2012 IEEE International Conference on
ISSN :
1550-3607
Print_ISBN :
978-1-4577-2052-9
Electronic_ISBN :
1938-1883
Type :
conf
DOI :
10.1109/ICC.2012.6364563
Filename :
6364563
Link To Document :
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