Efficient File Synchronizing Between Cloud Services and Mobile Devices

Abstract

Mobile devices have quickly become one of the most dominant forms of per- sonal data storage, data retrieval, and communication tool in the word. Un- der the mobile computing paradigm, users are provided access to their data wherever they are. Systems that provide such ubiquitous data access must deal with the inherent problem of data synchronization. Most of the recent mobile devices have the internet connectivity through Wi-Fi or 3G. So taking the advantage of cloud backup and synchronizing can overcome drawbacks of traditional backup and synchronizing. But recent mobile devices consist of gigabyte sizes of memories that can store many types of data such as multimedia contents, documents, pictures, and applications. As a result the synchronizing process of these data takes much more time than it took before. Furthermore these devices are weakly connected because the instability of mobile networks results alternating connectivity and a poor bandwidth. Thus it is a costly and time consuming task to synchronize or transfer les through the mobile networks. E cient le synchronizing protocol and algorithms are needed to over- come this problem and use the mobile cloud synchronization more e ectively. E cient means, the amount of data transmitted between the mobile hand- held and the remote storage should be low to reduce cost and the time. This research proposes an improved mechanism for synchronizing les between mobile devices and cloud services by using more e cient synchronizing algo- rithms. The total number of mobile web users grew past than the total number of desktop computer based internet users for the rst time in 2008. Number of users that want to back up their mobile data are also getting increased day by day. Storage e ciency of the backup system is also a requirement in cloud storage providers' aspect. This research suggests a storage e cient backup system, that support versioning to overcome the aforementioned problem.