Wireless Grid Middleware Architecture for Providing Reliable Services

Currently there are many requirements for the interconnection and interoperability between mobile users and static grid area with a P2P-like manner. Due to the nature of the mobile device and quality poor connection in wireless network, the behavior of mobile devices might be very unpredictable. Thus, we need well-organized system architecture to provide reliable grid services for the mission critical application such as e-health services. In this paper, we introduce a new mobile-to-grid gateway replication (MGR) architecture that can satisfy those requirements. In MGR architecture we integrate mobile-to-grid gateway (MG) with policy based quorum resource management (PQRM) (Dong Su Nam et al., 2004; Chan-Hyun Youn et al., 2004) into a unity system. And we also propose a cost-constraint replication algorithm for calculating the optimal number of replication gateways depending on users´ budget and requirements. Through the theoretical analysis and simulation, the results from the proposed scheme are measured and discussed.