Framework designs to enhance reliable and timely services of disaster management systems

How to tolerate fault is a fundamental requirement to the designs of many cyber-physical systems. Devices or sensors might have different requirements on their levels of reliability and/or timely services in the composition of a cyber-physical system. In this work, a system framework is explored to virtualize devices/sensors and service migration is considered during run time, so that faults are masked and the timeliness in services is enhanced. In particular, a disaster messaging system supporting seamlessly service recovery in small and large scale network is developed and evaluated, where an acceptable level of connectivity in the face of numerous faults for responsive deliveries of information critical to the success of emergency response and rescue operations. The framework also takes into account the energy consumption and reliability of sensing services, while using different types of memory components. Last but not least, augmented sensing using smart phones allows users to receive the sensed information nearby; this is critical when communication infrastructures are damaged.