The advancements in technology have enabled mobile devices to become information and service providers by complementing or replacing static hosts. This motivates the need for merging of mobile and grid technologies, leading to mobile grid paradigm. Computational mobile grid can also be viewed as a seamless integration of cluster of mobile clusters. Hence, as a first step in realizing a mobile grid, Anonymous Remote Mobile Cluster Computing (ARMCC) model is proposed. The main purpose of ARMCC is to utilize the idle computing power of both the static and mobile nodes, to provide parallel programming on a distributed mobile computing environment. The cluster model was extended to a mobile grid paradigm that integrates the computational, data and service grids. However, though the mobile grid is visualized as cluster of mobile clusters, the model of mobile cluster is not directly applicable to mobile grid. In addition to computational power other resources and services offered by the participating nodes are shared in case of mobile grid. Thus, all the participating mobile nodes in the mobile grid are represented using surrogate objects which reside on the static portion of the network. These surrogate objects are realized as a shared distributed object space. The constrained nature of the mobile devices participating in the mobile cluster requires an efficient communication primitive for exactly-once message delivery. Thus a novel communication paradigm, namely, Fault Tolerant Exactly Once Reliable Multicast Protocol (FTEORMP) for distributed mobile system is proposed.

Key words: Computational Mobile Grid, Cluster Model