Abstract The recent increase in the research interests towards a smart life style has introduced a huge number of devices into our life. Some devices are being used by us such as the smart phones while others are most of the time invisible to us such as proximity sensors and light sensors etc. These devices are being interconnected via Internet and are being utilized to read an environment, detect patterns and predict or forecast some events. Sharing the data and information collected by these desperate devices to clients over the Internet is called as Provision. Due to disparity in the hardware and software platforms for sensing devices, the provisioning services are also limited to providing contextual data based on single provider and there is no generic process model which can be utilized for composite context provisioning from multiple providers. This paper presents a service-oriented process model for composite context provisioning. A step by step explanation has been provided for each process involved and performance analysis has been carried out using a prototype implementation of the model.

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[20] Zaslavsky A., Perera C., and Georgakopoulos D., Sensing as a Service and Big Data, in Proceeding of the International Conference on Advances in Cloud Computing, Bangalore, 2013. Muhammad Khan received his B.S. and M.S. degrees from Computer Software Engineering Department, University of Engineering and Technology Peshawar in 2008 and 2012 respectively. Meanwhile, he had been a part of the software development industry in Pakistan as a designer and developer. From 2010 onwards, he has been working as a faculty member at his parent department. Currently, he is pursuing his Ph.D. studies from Jeju National University, South Korea and is associated with the Mobile Computing lab at JNU. The major focus of his work is the application of software design strategies towards the design and development of Sensor-Actuator Networks and Internet of Things. DoHyeun Kim received the B.S., M.S. and P.D degrees in Electronics Engineering from Kyungpook National University, Taegu, Korea, in 1988 and 1990, 2000 respectively. He joined the Agency of Defense Development (ADD), Korea, in 1990. Since 2004, he is currently a professor at the Department of Computer Engineering at Jeju National University, Korea. His research interests include sensor web, optimization algorithm and context prediction.