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On channel assignment, distributed antennas and network load distribution in dense IEEE 802.11 infrastructure networks

Published: 28 June 2010 Publication History

Abstract

During the last few years, there has been a tremendous increase in the deployment of IEEE 802.11 wireless networks. However, a possible drawback is the proliferation of dense WiFi deployments leading to mutual interference among WiFi nodes were users will experience low QoS levels. The contribution of this work is to present an architecture for dense WiFi networks that combines Rf channel assignment, distributed antennas and network load distribution to enhance QoS. Simulation results showed that channel assignment and distributed antenna are complementary. The former one increases the capacity of the network by adding additional spectrum and decreasing co-channel interference. The latter one helps to decrease the packet error rate especially of weak links, which also results in higher network capacity. In addition, by balancing the network load among several Access Points the capacity of the uplink of the wired broadband connection (e.g. DSL) can be more efficiently utilized. Simulations show that the proposed method increases the average throughput by up to 14% in infrastructure networks where the wireless capacity is the limiting factor. In scenarios where the backbone is the limiting factor, the average throughput can be increased by up to 56% by using distributed antennas and network load distribution.

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M. Abusubaih. Cognitive Wireless Local Area Networks. PhD thesis, TU Berlin, 2009.
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R. Alk and A. Arepally. Dynamic channel assignment in ieee 802.11 networks. 2007.
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H. B. Allen Miu and C. E. Koksal. Improving loss resilience with multi-radio diversity in wireless networks. 2005.
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H. B. Kim. Radio over Fiber based Network Architecture. PhD thesis, TU Berlin, 2005.
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V. Manilici, A. Wundsam, A. Feldmann, P. Zerfos, R. Sombrutzki, J. Singh, and P. Vidales. On the potential of flow-based routing in multihomed environments. 2009.
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R. A. Mohamad Haidar and D. H. Al-Rizzo. Channel assignment and load distribution in a power-managed wlan. 2007.
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R. Murty, J. Padhye, R. Chandra, A. Wolman, and B. Zill. Designing high performance enterprise wi-fi-networks. 2008.
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  1. On channel assignment, distributed antennas and network load distribution in dense IEEE 802.11 infrastructure networks

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    IWCMC '10: Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
    June 2010
    1371 pages
    ISBN:9781450300629
    DOI:10.1145/1815396
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 28 June 2010

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    Author Tags

    1. IEEE 802.11
    2. channel assignment
    3. dense WiFi networks
    4. distributed antennas
    5. network load distribution

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