Este trabalho apresenta os principais problemas da provisão de qualidade de serviço em
redes locais sem-fio IEEE 802.11. Os problemas de injustiça no compartilhamento da banda …

This paper presents major quality of service problems in IEEE 802.11 networks. It analyzes
unfairness in bandwidth sharing and TCP instability in MAC 802.11. Moreover …

WLAN network which consists of a mixture of 802.11 e nodes and 802.11 b nodes. Using
simulation, we show that the choice of the contention parameters severely affects the trade …

IEEE 802.11 wireless networks are widely used to connect to the Internet due to their low
cost, easy deployment and mobility support. In this thesis we deal with four different aspects …

This paper analyzes and compares four different mechanisms for providing QoS in IEEE
802.11 wireless LANs. We have evaluated the IEEE 802.11 mode for service differentiation …

This paper deals with application level fairness issues in IEEE 802.11 Wireless LANs. The
current implementations of 802.11 use the so called Distributed Coordination Function …

In this paper we introduce a tractable analytic model of throughput performance for general
802.11 multi-hop networks. We use this model to explore a number of fairness issues in …

In this paper, we propose a mechanism to eliminate the performance anomaly of IEEE
802.11 b. Performance anomaly happens when nodes that have different transmission rates …

This paper deals with application level QoS and fairness issues in IEEE 802.11 wireless
LANs. The current implementations of 802.11 use the DCF, which gives the same medium …

As local area wireless networks based on the IEEE 802.11 standard see increasing public
deployment, it is important to ensure that access to the network by different users remains …