الفهرس 
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Abstract
During the past decade, Mobile computing has gained a lot of interest in the computing research community. The popularity of mobile computing and communications devices can be traced to their ability to deliver information to users when needed. The ability to use applications and information on one mobile device, then to synchronize any updates with the applications and information back at the office, or on the network, is key to the utility and popularity of this pervasive, disconnected way of computing. Rather, there is a proliferation of different, proprietary data synchronization protocols for mobile devices. Each of these protocols is only available for selected transports, implemented on a selected subset of devices, and able to access a small set of networked data. The absence of a single synchronization standard poses many problems for end users, device manufacturers, application developers, and service providers. The main contributions for this thesis are: the analysis of Synchronization Markup Language (SyncML) data synchronization protocol architecture and its java implementation Sync4j, and introducing the proposed Sync4j local data synchronization implementation using Wireless Personal Area Networks (WPAN), then enhance the WPAN limitations by using the wireless mesh personal area networks in local data synchronization. Wireless Mesh Networks (WMNs) have proven to be of great potential in providing new and innovative applications in many areas in the last few years. To evaluate the validity of the previous theoretical expressions, numerous experiments were carried out on real Bluetooth (BT) connections between a master and slave employing the Personal Area Network (PAN) profile. The BT master and the slave were installed in the two equipment (PC with Universal Serial Bus (USB) Bluetooth adaptor, mobile device with built-in Bluetooth). Each experiment consisted in the transmission through a user data block. The delay for each data block was computed as the time elapsed from the start of the data transmission to the reception of the last data bit in the slave. The delay introduced by the Operating System and USB interfaces was removed from the empirical results.