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    Routing algorithm in warehouse with congestion consideration using an ACO with VLC support
    (2017-10-19)
    Srivilas, Krit
    ;
    Cherntanomwong, Panarat
    For warehouse management, order picking is one of the most important factors since it is the most time consuming operation contributing to the overall warehouse operational cost. Moreover, if the picking congestion occurs when there are multiple order pickers, the consumed picking time will increase. Therefore, this paper presents the new routing algorithm to reduce the picking time for multiple pickers. The proposed routing algorithm is based on an Ant Colony Optimization (ACO) combined with the indoor positioning supported by the Visible Light Communication (VLC) system. To validate the proposed algorithm, the experiment is done in the multiple-block picker-To-part warehouse of the construction material supplier. The experimental results show that the proposed routing algorithm is able to reduce the travelling time leading to reduce the order picking time.
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    AOMDV with sufficient bandwidth aware
    (2010-11-19)
    Wannawilai, Pattana
    ;
    Sathitwiriyawong, Chanboon
    Multi-path routing protocols for MANET are deemed superior over conventional single-path routing protocols as the former reduce end-to-end delay, increase reliability and provide robustness. However, the shortest path routes resulting from shortest multi-path routing, such as AOMDV, cause the area congested and thus its effectiveness is decreased. This paper proposes a novel Ad hoc On-demand Multipath Distance Vector with Sufficient Bandwidth Aware (AOMDV+SBA) routing protocol which significantly improves the performance of the original AOMDV routing protocol by discovering better routes to avoid congestion. The ns-2 simulation results illustrate the improvement of network performance and stability by reducing data packet delay and power consumption and increasing packet delivery ratio, under medium to high traffic load. Moreover, in case of low-to-medium traffic load, its performance is close to the original AOMDV routing protocol and the quality of its properties is maintained. © 2010 IEEE.
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    AODV with sufficient bandwidth aware routing protocol
    (2010-08-06)
    Wannawilai, Pattana
    ;
    Sathitwiriyawong, Chanboon
    Congestion is a major problem in mobile ad hoc network (MANET) which causes long delay and significant loss of data packets, and increases the routing overhead and battery power consumption. The shortest path route seldom offers the optimal route, especially when it traverses the congested area of the mobile network. This paper proposes a novel AODV with Sufficient Bandwidth Aware (AODV+SBA) routing protocol which significantly improves the performance of on-demand routing protocols by discovering better routes to avoid congestion and reducing excessive routing overhead. The ns-2 simulation results illustrate the improvement of network performance and stability by reducing data packet delay and routing overhead and increasing packet delivery ratio, under high traffic load. Moreover, in case of low-to-medium traffic load, its performance is close to the popular AODV routing protocol and the quality of its properties is maintained. Copyright © 2010 ACM.