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The handoff decision among heterogeneous wireless networks is a very important issue for integrating WLANs and cellular networks. Such networks exhibit different characteristics with respect to bandwidth, latency, power, and their charge model as well. In this paper, we present extensive numerical simulations of a novel vertical handover mechanism, which we proposed recently. We compare our mechanism...
In the original study based on the EDCA, the paper puts forward a concept of priority threshold to control traffics in a node. It makes EDCA mechanisms not only have the characteristics of priority, but also have good fairness. Among the nodes, optimized EDCA mechanism uses slot utilization to reflect the current network status, and changes the maximum and minimum contention window in order to improve...
This paper proposed a new multi-metric dynamic priority MAC algorithm for 802.11e WLAN in order to fairly distribute the bandwidth among different kinds of traffic. Our main contribution is to dynamically adjust the priority of each queue and assign corresponding access parameters according to the value of priority function during update period. The waiting time of a packet in the queue and the ratio...
Wireless local area network access points are being used extensively by mobile users. Therefore an intelligent mechanism is needed to allow mobile devices to switch between access points when a particular access point is heavily congested with network traffic. This is to allow users to perceive a better quality of service. This paper describes the qualitative study of using an intelligent access point...
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