¹Computer and Information Institute of Three Gorges University ,Yichang,China,443002
²School of Information and Communication Engineering of Beijing University of Posts and Telecommunication, Beijing,China,100876

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Abstract—The static bandwidth’s reservation and resource allocation in 802.11e results in bad supporting to the Internet of things. The cross-layer per-flow distributed admission control with dynamic reservation of bandwidth and multiple OoS guarantee of EDCA in IEEE802.11e is presented in this paper. The adaptive bits allocation of OFDM in the station is presented to obtain the maximum Shannon’s capacity subjected to the maximum power at first and this information is crossed layer to the MAC. Then the dynamic bandwidth reservation is suggested based on it and the distributed measurement, which adapts to the requirement of the service and maximizes the efficiency of spectrum simultaneously. Meanwhile, the surplus factor’s central estimation based on model is presented to overcome the measurement’s inaccuracy. On the other hand, the relationship between the QoS and the probability of the collision is analyzed and the double criterion with collision probability and bandwidth is used to ensure multiple QoS such as bandwidth and delay. The simulation under MATLAB show that the mechanism presented in this paper outperforms the formers in the utilization of resource and the ability to track the network and service as well as admission of the service.

Index Terms—Distributed Admission Control, Bits allocation of OFDM, dynamic reserve of the bandwidth, computation of the collision probability and surplus factor, Multiple QoS guarantee

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Cite: Juling Zeng, Lisi Jiang, "The Cross-Layer per-Flow Admission Control with Adaptive Reservation of Bandwidth and Multiple QoS Guarantee in EDCA of IEEE 802.11e for Internet of Things," Journal of Computers vol. 9, no. 10, pp. 2405-2413, 2014.