Prabhavat, Sumet

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Prabhavat, Sumet
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Prabhavat, S.
Prapawat, Sumet
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Email
sumet.pr@kmitl.ac.th

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    Item type:Publication,
    An Epidemic Routing with Low Message Exchange Overhead for Delay Tolerant Networks
    (2015-01-01)
    Choksatid, Teerapong
    ;
    Prabhavat, Sumet
    Epidemic routing strategy enables mobile nodes in Delay-Tolerant Networks (DTN) to send messages to destinations without requiring any predetermined path between source nodes to destination nodes. However, it can cause a large number of message exchanges and consequently degrades network performance. In this article, we propose a novel epidemic routing strategy called the Epidemic Message with Message List Advertisement (EM-MA) that exploits broadcasting nature of wireless medium and slotted time communication to reduce network congestion and nodes' energy consumption without affecting the message delivery time. Additionally, we conduct intensive simulations to demonstrate and compare the performance of EM-MA with other existing routing strategies. The results show that EM-MA outperforms the existing routing strategies and is suitable to be used in DTN. © Springer International Publishing Switzerland 2015.
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    An efficient spreading Epidemic Routing for Delay-Tolerant Network
    (2016-03-30)
    Choksatid, Teerapong
    ;
    Narongkhachavana, Worrawat
    ;
    Prabhavat, Sumet
    Delay-Tolerant Network (DTN) is a network technology which can provide communication in an environment where an end-to-end path may not be possible. Over the past years, Epidemic Routing has been recognized as the DTN protocol that can deliver messages quickly by spreading messages from node to node all over the network. However, many pieces of research argue against using Epidemic Routing due to the large number of message exchanges. In this paper, we propose Speed Epidemic Routing (SEd), which is the renovation of Epidemic Routing scheme. By applying broadcast transmission, we can increase the speed of messages spreading and reduce forwarding redundant messages. The simulation results show that SEd is a protocol providing high delivery rate and low packet rate at the same time.
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    Item type:Publication,
    An efficient message flooding scheme in delay-tolerant networks
    (2015-01-01)
    Narongkhachavana, Worrawat
    ;
    Choksatid, Teerapong
    ;
    Prabhavat, Sumet
    In intermittently connected ad hoc networks, a reliable path between communication endpoints may not exist because mobile nodes randomly move during their operation. Furthermore, routing protocols have to work efficiently under constraints of limited bandwidth and energy. These challenge researchers to develop a suitable protocol for the networks. In this paper, we present a new routing protocol, which limits the number of message replications. In addition, a node should spread messages with lower probability if the messages are currently distributed in its local neighborhood. This increases an opportunity for a node to spread messages to other network areas. Simulation results show that our work can increase delivery ratio while maintaining low end-to-end delay and message exchange overhead.