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.