Abstract
Dual-purpose systems for both normal and disaster situations are necessary for providing continuous services from normal situations to disaster situations. We have been developing the dual-purposed systems based on the assurance network design principle. The assurance network design principle makes the dual-purpose systems work stably in both normal and disaster situations. This paper proposes a connectivity-dependent data propagation scheme, in which each terminal transfers data adaptively by wireless multi-hop data transfer or store-and-forward data transfer depending on whether the terminal has connections to its neighboring terminals. To verify the resilience against disconnection among neighboring terminals, we show field experimental results on data propagation time. Also we propose the dual-purpose system, in which there are two types of graphical user interface (GUI) for both situations. Whenever each terminal receives a special packet in disaster situations, the GUI automatically switches from one type for normal situations to another type for disaster situations. We have unified these two types of GUI so that users can understand how to use them even when GUI is automatically switched. To validate feasibility of the dual-purpose normal and disaster situations system, we show experimental results on dissemination of assessment information and automatical switching of GUIs.
Highlights
A new concept called “assurance networks” has been proposed in [1]
As the service applications in normal situations, we have developed the assessment information acquisition and dissemination system based on delay and disruption tolerant MANETs for the Hiroshima national confectionery exposition [2]
Applying this system to the service application in disaster situations, short information such as safety and inquiry can be propagated through the delay and disruption tolerant MANETs
Summary
A new concept called “assurance networks” has been proposed in [1]. In design principle of assurance networks, failure is regarded as dynamic variation and network structure is reconfigured by network elements for adapting it. Service applications to be executed in assurance networks must be available for both normal and disaster situations. As the service applications in normal situations, we have developed the assessment information acquisition and dissemination system based on delay and disruption tolerant MANETs for the Hiroshima national confectionery exposition [2]. Applying this system to the service application in disaster situations, short information such as safety and inquiry can be propagated through the delay and disruption tolerant MANETs. To illustrate feasibility of the service application in normal situations, which can be applied to disaster applications, demonstration on this system has been done in the MASS 2013 international symposium and the Japanese domestic technical meeting, AN, USN, and MoNA [3]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
