Optimal Reintegration Time for Real-Time Web Applications in Mobile Client-Server Systems

Real-time web applications have a time constraint. Such applications(server) may have mobile users(clients). A wireless 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. Here we design algorithms for supporting disconnected write operations for wireless Web access and identify the optimal length of the disconnection period under which the cost of update propagation is minimized. The result is applied to real-time Web applications such that the mobile user can determine the longest disconnection period and propagate updates to the server before the deadline so that a minimum communication cost is incurred.