A wireless local area network employing distributed radio bridges
Wireless Networks
Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit
IEEE/ACM Transactions on Networking (TON)
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Wireless Communications & Mobile Computing - Special Issue: Emerging WLAN Apllications and Technologies
Improving loss resilience with multi-radio diversity in wireless networks
Proceedings of the 11th annual international conference on Mobile computing and networking
Self-management in chaotic wireless deployments
Proceedings of the 11th annual international conference on Mobile computing and networking
Wireless Communications & Mobile Computing - RRM for Next-Generation Wireless and Mobile Communication Systems
Exploiting the capture effect for collision detection and recovery
EmNets '05 Proceedings of the 2nd IEEE workshop on Embedded Networked Sensors
Diversity-multiplexing tradeoff in multiple-access channels
IEEE Transactions on Information Theory
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
A cooperative MAC protocol with virtual-antenna array support in a multi-AP WLAN system
IEEE Transactions on Wireless Communications
Distributed physical carrier sensing adaptation scheme in cooperative MAP WLAN
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
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With the increasing development of IEEE 802.11 based Wireless Local Area Network (WLAN) devices, large-scale multi-cell WLANs with a high density of users and access points (APs) have emerged widely in various hotspots. Providing resilient data transmission has been a primary challenge for scaling the WLANs because the high density of users and APs results in too many collisions. In this paper, we analyze and point out the defect of the single association mechanism defined in IEEE 802.11 on transmission reliability from a network perspective. Then, we propose a "multi-AP" architecture with which a MAC layer device called an AP Controller (AC) is employed to enable each user to associate and cooperate with multiple APs. In this way, the users can benefit from the diversity effect of multipaths with independent collisions and transmission errors. This paper concentrates on the theoretical analysis of performance comparison between the proposed "Multi-AP" architecture and that in IEEE 802.11. Extensive simulation results show that the proposed "multi-AP" architecture can obtain much better performance in terms of the throughput per user and the total throughput, and the performance gain is position dependent. Moreover, the unfairness issue in traditional WLANs due to capture effect can be alleviated properly in the "multi-AP" framework.