Enhancing WLAN capacity by strategic placement of tetherless relay points

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Enhancing WLAN capacity by strategic placement of tetherless relay points (2007)

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by Aaron So , Ben Liang

Venue:	IEEE TRANS. ON MOBILE COMPUTING
Citations:	11 - 1 self

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@ARTICLE{So07enhancingwlan,
    author = {Aaron So and Ben Liang},
    title = {Enhancing WLAN capacity by strategic placement of tetherless relay points},
    journal = {IEEE TRANS. ON MOBILE COMPUTING},
    year = {2007}
}

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Abstract

With the proliferation of wireless local area network (WLAN) technologies, wireless Internet access via public hotspots will become a necessity in the near future. In outdoor areas where the installation of a large number of wired access points is practically or economically infeasible, mobile users located at the edge of the network communicate with the access point at a very low rate and in turn waste network resources. In this work, we promote the use of tetherless relay points (TRPs) to improve the throughput of a WLAN in such environments. We first provide a high level description on how to integrate TRPs in a multi-rate WLAN architecture. We then propose an integer-programming optimization formulation and an iterative approach to compute the best placement of a fixed number of TRPs. Finally, we show in numerical analysis, through a case study based on relay-enabled rate adaptation and IEEE 802.11-like multi-rate physical model with Rayleigh fading, that for a wide range of system parameters, significant performance gain can be achieved when TRPs are strategically installed in the network.

Keyphrases

tetherless relay point wlan capacity strategic placement mobile user numerical analysis near future rayleigh fading wired access point multi-rate wlan architecture turn waste network resource low rate wireless local area network integer-programming optimization formulation case study access point fixed number iterative approach large number outdoor area wide range 11-like multi-rate physical model network communicate wireless internet access relay-enabled rate adaptation public hotspot high level description significant performance gain system parameter

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