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tion problem in two steps. First, we formulate an abstract optimization problem for video streaming in wireless networks in general. This formulation exposes the important interact...
—We extend the modeling heuristic of [1] to evaluate the performance of an IEEE 802.11e infrastructure network carrying packet telephone calls, streaming video sessions and TCP c...
Supporting telephone services using wireless LAN as the access network is an important application nowadays. The SIP and IEEE 802.11e are the two most promising protocols to suppo...
This paper presents a work in progress which deals with the problem of node misbehaviour in ad-hoc networks. A realistic approach is used to determine the impact of contention wind...
The IEEE 802.11e technology is receiving much interest due to the promising enhancements it will offer to wireless local area networks in terms of QoS support. Until now, research...
Carlos Miguel Tavares Calafate, Pietro Manzoni, Ma...
New technologies such as IEEE 802.16 (Wi-MAX) [2] and IEEE 802.11e (Wi-Fi with QoS) [1] enable differentiated services. In this study we explore the potential for increasing the r...
In this work we present the results of a comparative study between two well-known network simulators: ns-2 and OPNET Modeler. In particular, we focus on a performance evaluation o...
P. Pablo Garrido, Manuel P. Malumbres, Carlos Migu...
In this paper the behavior of the upcoming MAC protocol for wireless LANs IEEE 802.11e is investigated. Based on the results, we propose an enhancement for Hybrid Coordination Fun...
Balasubramanian Appiah Venkatakrishnan, S. Selvake...
Abstract -- In this paper, we study the provision of perclass QoS for IEEE 802.11e Enhanced Distributed Channel Access (EDCA) WLANs. We propose two mechanisms, called BIWF-SP and I...
The upcoming IEEE 802.11e standard was developed to offer QoS capabilities to WLAN, offering significative improvements to multimedia traffic. MANETs will also benefit from thi...
Carlos Miguel Tavares Calafate, Pietro Manzoni, Ma...