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    Item type:Publication, Access status: without files ,
    Adaptive routing in wireless sensor networks for fire fighting
    (Springer, 2012-09-03)
    An, Chunlei
    ;
    Luo, Yunqi
    ;
    Timm-Giel, Andreas
    Fire fighters often work in dangerous and dynamic environments, which results in frequent change of network topologies and routing requirements. While the existing routing protocols are not able to cope with such a changeable environment, this paper proposes a self adaptive hybrid routing algorithm. This routing algorithm can switch between the proactive routing algorithm and reactive routing algorithm for each node pair automatically. An analytical model is created to describe the routing switch decision making algorithm. This model is based on a set of the cost functions. A numerical example shows the necessity of switching routing algorithms to reduce the overall control message overhead. © 2012 IFIP International Federation for Information Processing.
    Publicationtype: Conference Paper
      108
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    Item type:Publication, Access status: without files ,
    Automatic handover decision in content centric networking
    (Springer, 2012-09-03)
    Luo, Yunqi
    ;
    An, Chunlei
    ;
    Eymann, Jonas
    ;
    Timm-Giel, Andreas
    The current Internet architecture was designed more than 30 years ago for a very different set of services than those used today. Several new architectures have been proposed for a Future Internet to better meet todays and future requirements. Content Centric Networking (CCN) is one of those new architectures gaining worldwide attention by researchers and the focus of this article. CCN is based on naming content instead of hosts allowing routers to cache popular content. It has been shown that CCN can also support point-to-point real-time conversations, for example voice or video calls. However, it has not been defined how node mobility can be achieved in such a real-time scenario with strong time constraints. In this paper a close study to the handover algorithms has been carried out. A handover decision maker, which is based on neuro-fuzzy system (NFS) is proposed and evaluated. The results show that the proposed decision maker meets the design targets. © 2012 IFIP International Federation for Information Processing.
    Publicationtype: Conference Paper
      195