Performance study of access control in wireless LANs—IEEE 802.11 DFWMAC and ETSI RES 10 Hiperlan
Mobile Networks and Applications - Special issue on channel access in wireless networks
Policy-Based Networking: Architecture and Algorithms
Policy-Based Networking: Architecture and Algorithms
Microwave Mobile Communications
Microwave Mobile Communications
A capacity analysis for the IEEE 802.11 MAC protocol
Wireless Networks
Adaptive QoS management for IEEE 802.11 future wireless ISPs
Wireless Networks
Performance Enhancement of Multirate IEEE 802.11 WLANs with Geographically Scattered Stations
IEEE Transactions on Mobile Computing
IEEE Communications Surveys & Tutorials
IEEE 802.11 Wireless Local Area Networks
IEEE Communications Magazine
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
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To adapt the data rate in accordance with the quality of the link, the IEEE 802.11 standard proposes the variable rate shifting functionality. This intrinsic functionality of the 802.11 products progressively degrades the bit rate when a host detects unsuccessful frame transmissions. Furthermore, the basic CSMA/CA channel access method guarantees that the long-term channel access probability is equal for all hosts. When one host captures the channel for a long time because its bit rate is low, it penalizes other hosts that use the higher rate, inciting a performance overall degradation. We propose a self-adapting algorithm to improve resources shared among the active hosts in the hot spot, thus avoiding the performance degradation caused by one or more low-rate hosts. This algorithm aims at avoiding this performance degradation and the consequent waste of bandwidth. An extensive evaluation is performed depicting the improvement achieved.