Panichpapiboon, Sooksan

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Panichpapiboon, Sooksan
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sooksan.pa@kmitl.ac.th

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    Item type:Publication,
    Route reservation in ad hoc wireless networks
    (2007-01-01)
    Panichpapiboon, Sooksan
    ;
    Ferrari, Gianluigi
    ;
    Wisitpongphan, Nawaporn
    ;
    Tonguz, Ozan K.
    This paper investigates whether and when route reservation-based (RB) communication can yield better delay performance than non-reservation-based (NRB) communication in ad hoc wireless networks. In addition to posing this fundamental question, the requirements (in terms of route discovery, medium access control (MAC) protocol, and pipelining, etc.) for making RB switching superior to NRB switching are also identified. A novel analytical framework is developed and the network performance under both RB and NRB schemes is quantified. It is shown that if the aforementioned requirements are met, then RB schemes can indeed yield better delay performance than NRB schemes. This advantage, however, comes at the expense of lower throughput and goodput compared to NRB schemes. © 2007 IEEE.
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    Connectivity of ad hoc wireless networks: An alternative to graph-theoretic approaches
    (2010-04-01)
    Panichpapiboon, Sooksan
    ;
    Ferrari, Gianluigi
    ;
    Tonguz, Ozan K.
    Connectivity in wireless ad hoc and sensor networks is typically analyzed using a graph-theoretic approach. In this paper, we investigate an alternative communication-theoretic approach for determining the minimum transmit power required for achieving connectivity. Our results show that, if there is significant multipath fading and/or multiple access interference in the network, then graph-theoretic approaches can substantially underestimate the minimum transmit power required for connectivity. This is due to the fact that graph-theoretic approaches do not take the route quality into consideration. Therefore, while in scenarios with line-of-sight (LOS) communications a graph-theoretic approach could be adequate for determining the minimum transmit power required for connectivity, in scenarios with strong multipath fading and/or multiple access interference a communication-theoretic approach could yield much more accurate results and, therefore, be preferable. © Springer Science+Business Media, LLC 2009.