Multimedia Transmission in Wireless Local Area Networks Environment (Greece-Hungary)

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Projects - International Projects

Duration

2004-2006

Budget

€ 11,740

Short Description

In order to build the Information Society efficiently before the end of this decade, infocom services had to be delivered to customers anywhere and anytime. Wireless Local Area Networks (WLANS) form the solid base of this endeavour in low mobility local areas. As the use of Wireless LANs (WLANs) became more and more popular, so the demand of mobile users for more advanced services with Quality of Service (QoS) through the WLANs increased. WLANs provide an easy, cheap and efficient way for mobile users to request access to remote services while at home, hot-spots or company premises. Due to the need to meet these new requirements, several WLAN standards have addressed the issue of QoS provision. One of the most promising initiatives in the direction of QoS provision in WLANs was the development of the IEEE 802.11e standard, which forms a QoS extension for legacy IEEE 802.11. This project focused on the development of an efficient QoS traffic handling mechanism that was adapted to the particular characteristics of WLANs both in centralised or ad-hoc operation mode and provided adequate QoS level to mobile users, using the advanced capabilities of 802.11e. The 802.11e standard, although complete, does not include the description of a traffic-scheduling algorithm, as this is out of its scope, leaving enough space for research in this area. The basic objective of this proposal was first to study the existing traffic scheduling algorithms for WLANs and then develop and evaluate a novel scheduling mechanism for 802.11e that would incorporate the positive aspects of the existing algorithms.