Abstract: The Internet of Things (IoT) represents a comprehensive environment that consists of a large number of sensors and mediators interconnecting heterogeneous physical objects to the Internet. The research roadmap of IoT spans across vast domains, such as mobile computing, wireless and sensor networks, service-oriented computing, middleware, cloud computing and big data analytics, taking advantage of several recent breakthroughs in the respective domains.

The challenges associated with realization of IoT scenarios can be summarized across three layers: sensing and smart devices, connectivity, and cloud. The first layer deals with physical objects, including energy-efficient communication of the devices and developing the associated standards so that the interaction among the devices is seamless. The connectivity layer deals with sensor data acquisition and provisioning, through gateways and sinks. The top cloud layer deals with resource provisioning for storage and distributed processing of the acquired data in extracting domain specific information.

The participation of smart phones both as sensors and the gateways brings mobile web services and mobile cloud services into this cloud-centric IoT (CIoT) architecture. Although the CIoT model is a common approach to implement IoT systems, it faces issues such as latency and privacy, which lead to fog computing.

This lecture discusses CIoT in detail along with limitations that lead to fog computing. Then, the presentation will summarize the latest research challenges and trends in the fog computing domain. The  lecture concludes with a brief summary of cloud computing research performed at the Mobile and Cloud Lab and planned collaboration activities with Argonne.

Bio: Satish Narayana Srirama is a research professor and head of the Mobile and Cloud Lab at the Institute of Computer Science, University of Tartu, Estonia, and a visiting professor at the University of Hyderabad, India. He received his Ph.D. in computer science from RWTH Aachen University, Germany. His current research focuses on cloud computing, mobile web services, mobile cloud, Internet of Things, fog computing, migration of scientific computing and enterprise applications to the cloud, and large-scale data analytics in the cloud.