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Extensive research addressing IEEE 802.11e enhanced distributed channel access (EDCA) performance analysis, by means of analytical models, exist in the literature. It started mainly with the famous Bianchi's model and still continues today as several aspects have not been covered yet. Unfortunately, the currently proposed models, even though numerous, do not reach the required accuracy due to the...
Extensive research addressing IEEE 802.11 distributed coordination function (DCF) and 802.11e enhanced distributed channel access (EDCA) performance analysis, by means of analytical models, exists in the literature. It started mainly with the famous Bianchi's model and still continues today as several aspects have not been yet covered. Indeed, the ultimate goal is to obtain the model that provides...
In this paper, we propose a complete analytical model for the 802.11e enhanced distributed channel access (EDCA) under different traffic conditions; it outperforms almost all existing models. Based on the proposed model, the achievable throughput and access delay of each EDCA access category are given. Simulation is performed to demonstrate that our model provides a high degree of accuracy.
Supporting future large-scale vehicular networks is expected to require a combination of fixed roadside infrastructure (e.g. Road Side Units, RSU) and mobile in-vehicle technologies (e.g. On Board Units, OBU). The need for an infrastructure, however, considerably decreases the deployment area of VANET applications. In this paper, we propose a self-organizing mechanism to emulate a geo-localized virtual...
In this paper, we are interested in improving TCP flow performance when a short loss of 802.11 signal leads to lose segments. A short analytical study and a set of simulations in common wireless environments with signal losses due to distance or interferences are made to highlight the distinct MAC and TCP loss-recovery levels and the lack of interactions between them. This study shows the interest,...
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