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Algorithms for supporting disconnected write operations for wireless Web access in mobile client-server environments

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3 Author(s)
Ing-Ray Chen ; Comput. Sci. Dept., Virginia Tech., Falls Church, VA, USA ; Ngoc Anh Phan ; I-Ling Yen

In a wireless mobile client-server environment, a mobile user may voluntarily disconnect itself from the Web server to save its battery life and avoid high communication prices. To allow Web pages to be updated while the mobile user is disconnected from the Web server, updates can be staged in the mobile host and propagated back to the Web server upon reconnection. In this paper, we analyze algorithms for supporting disconnected write operations for wireless Web access and develop a performance model to identify the optimal length of the disconnection period under which the cost of update propagation is minimized. The analysis result is particularly applicable to Web applications which allow wireless mobile users to modify Web contents while on the move. We show how the result can be applied to real-time Web applications such that the mobile user can determine the longest disconnection period such that it can still propagate updates to the server before the deadline so that a minimum communication cost is incurred.

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Mobile Computing, IEEE Transactions on  (Volume:1 ,  Issue: 1 )