This paper discusses "multi-tier mobile cloud computing" architecture, where small IT servers in users' proximity are utilized to execute a part of application processing. The way of partitioning changes distribution of processing loads and traffic, and affects processing delay or battery usage. The problem is that it is unclear what partition brings a better result. This paper studies an abstract model of application execution in multi-tier mobile cloud, discusses performance metrics, and examines trade-offs among them. A prototype named Edge Accelerated Web Browsing is presented, too.
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