Computing and Informatics

Transaction management for mobile and ubiquitous computing (MUC) aims at providing mobile users with reliable and transparent services anytime anywhere. Traditional mobile transaction models built on client-proxy-server architecture cannot make this vision a reality because 1) in these models, base stations (proxy) are the prerequisite for mobile hosts (client) to connect with databases (server), and 2) few models considered context-based transaction management. In this paper, we propose a new network architecture for MUC transactions, with the goal that people can get online network access and transaction even while moving around; and design a context-aware transaction model and a context-driven coordination algorithm adaptive to dynamically changing MUC transaction context. The simulation results have demonstrated that our model and algorithm can significantly improve the successful ratio of MUC transactions.