On the feasibility of an adaptive movable access point system in a static indoor WLAN environment

Tomoki Murakami, Shingo Oka, Yasushi Takatori, Masato Mizoguchi, Fumiaki Maehara

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    This paper investigates an adaptive movable access point (AMAP) system and explores its feasibility in a static indoor classroom environment with an applied wireless local area network (WLAN) system. In the AMAP system, the positions of multiple access points (APs) are adaptively moved in accordance with clustered user groups, which ensures effective coverage for non-uniform user distributions over the target area. This enhances the signal to interference and noise power ratio (SINR) performance. In order to derive the appropriate AP positions, we utilize the k-means method in the AMAP system. To accurately estimate the position of each user within the target area for user clustering, we use the general methods of received signal strength indicator (RSSI) or time of arrival (ToA), measured by the WLAN systems. To clarify the basic effectiveness of the AMAP system, we first evaluate the SINR performance of the AMAP system and a conventional fixed-position AP system with equal intervals using computer simulations. Moreover, we demonstrate the quantitative improvement of the SINR performance by analyzing the ToA and RSSI data measured in an indoor classroom environment in order to clarify the feasibility of the AMAP system.

    Original languageEnglish
    Pages (from-to)1693-1700
    Number of pages8
    JournalIEICE Transactions on Communications
    VolumeE101B
    Issue number7
    DOIs
    Publication statusPublished - 2018 Jul 1

    Keywords

    • Adaptive movable access point (AMAP) system
    • K-means method
    • Receive signal strength indicator (RSSI)
    • Signal to interference and noise ratio (SINR)
    • Time of arrival (ToA)
    • Traffic offload
    • Wireless local area network (WLAN) system

    ASJC Scopus subject areas

    • Software
    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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