Data networks
An approximation algorithm for the generalized assignment problem
Mathematical Programming: Series A and B
CDMA: principles of spread spectrum communication
CDMA: principles of spread spectrum communication
Convex programming for scheduling unrelated parallel machines
Proceedings of the thirty-seventh annual ACM symposium on Theory of computing
Time-based fairness improves performance in multi-rate WLANs
ATEC '04 Proceedings of the annual conference on USENIX Annual Technical Conference
Fairness and load balancing in wireless LANs using association control
IEEE/ACM Transactions on Networking (TON)
An optimal station association policy for multi-rate ieee 802.11 wireless lans
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Frequency-aware rate adaptation and MAC protocols
Proceedings of the 15th annual international conference on Mobile computing and networking
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In this study, we investigate the problem of achieving proportional fairness via Access Point (AP) association in multi-rate WLANs. This problem is formulated as a non-linear program with an objective function of maximizing the total user bandwidth utilities in the whole network. It is NP-hard, and therefore effort in this paper is made to seek approximate solutions. We propose a centralized algorithm to derive the user-AP association via relaxation. Such a relaxation may cause a large integrality gap. Therefore a compensation function is introduced to guarantee that our algorithm can achieve at least half of the optimal solution in the worst-case scenario theoretically. Extensive simulation study has been reported to validate and compare the performances of our algorithms with those of the state-of-the-art.