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      • HARVEST
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      Data Synchronization in a Network-Volatile Mobile Ecosystem

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      FU-THESIS.pdf (2.059Mb)
      Date
      2014-10-20
      Author
      Fu, Wen
      Type
      Thesis
      Degree Level
      Masters
      Metadata
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      Abstract
      Today, it is a major issue for mobile applications to maintain a replica state of the server on mobile devices. This creates the need to keep data on both the server and the mobile. In such cases, when the data changes on the server, the new state of the data has to be updated on the mobile in order to maintain a consistent view of the data flow. However, mobile devices communicate over wireless mediums (.e.g., Bluetooth, Wi-Fi, 3.5G/4G, etc.) which can experience intermittent connectivity. The volatility of the network is also influenced by low-bandwidth. The direct effects of these issues are high latency and inconsistency issues between the data on the mobile clients and the remote servers. In this work, I present a detail review on the topic of data synchronization in mobile networks. Then, a generic architecture called MobiQ is proposed which can keep working in an offline mode to record local modifications and can synchronize with the remote servers when connectivity is restored. This is achieved through the proposal of an efficient synchronization protocol which combines different synchronization and replication strategies. Moreover, the MobiQ framework provides a secured environment to work with data. The implemented architecture is designed and tested in mobile questionnaire system and the result is encouraging.
      Degree
      Master of Science (M.Sc.)
      Department
      Computer Science
      Program
      Computer Science
      Supervisor
      Deters, Ralph
      Committee
      Vassileva, Julita; Neufeld, Eric; Zhang, Chris
      Copyright Date
      September 2014
      URI
      http://hdl.handle.net/10388/ETD-2014-09-1765
      Subject
      Mobile Cloud Computing, Data Synchronization
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