Analysis of the increase and decrease algorithms for congestion avoidance in computer networks
Computer Networks and ISDN Systems
Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit
IEEE/ACM Transactions on Networking (TON)
Fairness and load balancing in wireless LANs using association control
Proceedings of the 10th annual international conference on Mobile computing and networking
PE-WASUN '04 Proceedings of the 1st ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Idle sense: an optimal access method for high throughput and fairness in rate diverse wireless LANs
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Wireless hotspots: current challenges and future directions
Mobile Networks and Applications - Special issue: Wireless mobile wireless applications and services on WLAN hotspots
Measurement-based models of delivery and interference in static wireless networks
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Distributed channel management in uncoordinated wireless environments
Proceedings of the 12th annual international conference on Mobile computing and networking
An experimental study on the capture effect in 802.11a networks
Proceedings of the second ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
A general model of wireless interference
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Self-management in chaotic wireless deployments
Wireless Networks
SMARTA: a self-managing architecture for thin access points
CoNEXT '06 Proceedings of the 2006 ACM CoNEXT conference
Towards energy efficient VoIP over wireless LANs
Proceedings of the 9th ACM international symposium on Mobile ad hoc networking and computing
Can CSMA/CA networks be made fair?
Proceedings of the 14th ACM international conference on Mobile computing and networking
Online estimation of RF interference
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
CENTAUR: realizing the full potential of centralized wlans through a hybrid data path
Proceedings of the 15th annual international conference on Mobile computing and networking
IEEE Network: The Magazine of Global Internetworking
Multimedia Tools and Applications
| Hi-index | 0.00 |
Large-scale deployment of IEEE 802.11 wireless LANs (WLANs) with a high density of access points (APs) has become commonplace due mainly to its potential for numerous benefits, such as ubiquitous service coverage, seamless handover, and improved link quality. However, the increased AP density can induce significant channel contention among neighboring cells, thus causing severe performance degradation and throughput imbalance between cells. There have been a plethora of research efforts to improve the WLAN performance, but most of them focused only on single WLAN environments without accounting for inter-cell contention. The de facto QoS-provisioning mechanism for WLANs, i.e., the Enhanced Distributed Channel Access (EDCA), is no exception to this. The EDCA focuses only on inter-flow priority distinction and has not considered the effect of inter-cell contention which significantly restricts its efficiency. This paper presents an enhanced QoS provisioning framework that takes into account inter-cell level differentiation as well as inter-flow level priority, which may be viewed as extension of QoS provisioning from a single-WLAN domain to a multi-WLAN domain. We also propose an architecture for managing multi-AP systems in which a central controller regulates the wireless channel occupancy of APs by adaptively configuring the cell-level QoS parameters. Our extensive simulation results show that the proposed inter-AP cooperative QoS scheme overcomes the limit of legacy 802.11e and provides a high level of fairness in large-scale densely-deployed WLANs.