New Channel Access Coordination Functions in Large Scale Wireless LAN Systems

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Executive Summary

Large-scale wireless LAN systems based on the IEEE 802.11 standards have become the most successful wireless networks deployed in large organizations, such as educational campuses and corporate warehouses. However, the suite of IEEE 802.11 MAC protocols, including DCF, PCF and EDCA mechanisms, was unable to meet the challenges to provide collision freedom and differentiated quality of services. This paper proposes a channel access scheduling protocol based on Latin squares, called DCLASS (Distributed Coordination based on LAtin SquareS), that provisions a set of highly desirable features to large scale wireless networks with stringent performance demands.

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