Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011, Article ID 946498, 18 pages doi: Research Article Design of Active Queue Management for Robust Control on Access Router for Heterogeneous Networks ˚ Rahim Rahmani,1 Christer Ahlund,2 and Theo Kanter1 1 Department 2 Lule˚ a of Information Technology and Media, Mid Sweden University, Sweden University of Technology, Sweden Correspondence should be addressed to Rahim Rahmani, Received 26 August 2010; Revised 25 December 2010; Accepted 7 March 2011 Academic Editor: Mohamed Hossam Ahmed Copyright © 2011 Rahim Rahmani et al. This is an open access article distributed under the Creative Commons Attribution License,. | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 946498 18 pages doi 2011 946498 Research Article Design of Active Queue Management for Robust Control on Access Router for Heterogeneous Networks Rahim Rahmani 1 Christer Ahlund 2 and Theo Kanter1 1 Department of Information Technology and Media Mid Sweden University Sweden 2Lulea University of Technology Sweden Correspondence should be addressed to Rahim Rahmani Received 26 August 2010 Revised 25 December 2010 Accepted 7 March 2011 Academic Editor Mohamed Hossam Ahmed Copyright 2011 Rahim Rahmani et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. The Internet architecture is a packet switching technology that allows dynamic sharing of bandwidth among different flows with in an IP network. Packets are stored and forwarded from one node to the next until reaching their destination. Major issues in this integration are congestion control and how to meet different quality of service requirements associated with various services. In other words streaming media quality degrades with increased packet delay and jitter caused by network congestion. To mitigate the impact of network congestion various techniques have been used to improve multimedia quality and one of those techniques is Active Queue Management AQM . Access routers require a buffer to hold packets during times of congestion. A large buffer can absorb the bursty arrivals and this tends to increase the link utilizations but results in higher queuing delays. Traffic burstiness has a considerable negative impact on network performance. AQM is now considered an effective congestion control mechanism for enhancing transport protocol performance over wireless links. In order to have good link utilization it is .
