DocumentCode :
1628961
Title :
Game-Theoretic Modeling and Optimization of Contention-Prone Medium Access Phase in IEEE 802.16/WiMAX Networks
Author :
Chowdhury, Sayantan ; Dutta, Suman ; Mitra, Kanad ; Sanyal, Debarshi Kumar ; Chattopadhyay, Matangini ; Chattopadhyay, Samiran
Author_Institution :
Jadavpur Univ., Kolkata
fYear :
2008
Firstpage :
335
Lastpage :
342
Abstract :
IEEE 802.16/WiMAX is an emerging standard for broadband wireless networks. It operates in both point-to-multipoint (PMP) and mesh modes. In the former, a number of subscriber stations communicate directly with a central base station. Although it supports different traffic classes characterized by distinct QoS requirements, the simplest is the best effort traffic. In this class, the subscriber stations first send bandwidth requests to the base station in a contention prone manner. Once the desired bandwidth is granted, scheduled transmissions take place. With increasing number of subscriber stations, due to media contention, collisions increase causing high loss to request packets and hence fall in data throughput. In this paper we address the issue by designing a new medium access control protocol GTMA for this random access phase, using ideas from non-cooperative game theory. We show that the resulting game converges to a unique non-trivial Nash equilibrium. NS-2 simulations confirm the reduction in packet collisions and consequent increase in system-wide data throughput and improvement in short-term fairness. To the best of our knowledge, this is one of the first applications of game-theoretic ideas in the explicit setting of contention control in IEEE 802.16/WiMAX networks.
Keywords :
WiMax; access protocols; broadband networks; game theory; quality of service; telecommunication congestion control; telecommunication traffic; GTMA; IEEE 802.16; QoS; WiMAX networks; best effort traffic; broadband wireless networks; contention control; medium access control protocol; mesh mode; noncooperative game theory; nontrivial Nash equilibrium; point-to-multipoint mode; Access protocols; Bandwidth; Base stations; Media Access Protocol; Portable media players; Road accidents; Telecommunication traffic; Throughput; WiMAX; Wireless mesh networks; IEEE 802.16; Nash equilibrium; WiMAX; best-effort traffic; fairness; game theory; medium access control; throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Broadband Communications, Information Technology & Biomedical Applications, 2008 Third International Conference on
Conference_Location :
Gauteng
Print_ISBN :
978-1-4244-3281-3
Electronic_ISBN :
978-0-7695-3453-4
Type :
conf
DOI :
10.1109/BROADCOM.2008.13
Filename :
4696130
Link To Document :
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