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

S. Savyanavar Amit

Abstract


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.


Keywords


Disconnected Operations, Mobile Host, Real–Time Applications, Web Access.

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References


H. Chang et al., “Web Browsing in a Wireless Environment: Disconnected and Asynchronous Operation in ARTour Web Express”, Proc. Third ACM/IEEE Conf. Mobile Computing and Networking (MobiCom '97), pp. 260-269, Sept. 1997.

R. Floyd, R. Housel, and C. Tait, “Mobile Web Access Using eNetwork Web Express”, IEEE Personal Comm., vol. 5, no. 5, pp. 47-52, Oct. 1998.

Z. Jiang and L. Kleinrock, “Web Prefetching in a Mobile Environment”,IEEE Personal Comm., vol. 5, no. 5, pp. 25-34, Oct.1998.

J. Jing, A.S. Helal, and A. Elmagarmid, “Client-Server Computing in Mobile Environments”, ACM Computing Survey, vol. 31, no. 2,pp.117-157, June 1999.

A.D. Joseph, J.A. Tauber, and M.F. Kaasheok, “Mobile Computing with the Rover Tool-Kit”, IEEE Trans. Computers, vol. 46, no. 3,pp. 337-352,Mar. 1997.

M.F. Kaashoek, T. Pinckney, and J.A. Tauber, “Dynamic Documents:Mobile Wireless Access to the WWW”, IEEE Workshop Mobile Computing Systems and Applications, pp. 179-184, Dec. 1994.

J.J. Kistler and M. Satyanarayanan, “Disconnected Operation in the Coda File System”, ACM Trans. Computer Systems, vol. 10, no. 1,pp. 3-25,Feb. 1992.

M.S. Mazer and C.L. Brooks, “Writing the Web while Disconnected”,IEEE Personal Comm., vol. 5, no. 5, pp. 35-41, Oct. 1998.

E. Pitoura and G. Samaras, Data Management for Mobile Computing,Kluwer Academic Publishers, 1998.

D.B. Terry et al., “Managing Update Conflicts in Bayou: A Weakly Connected Replicated Storage System”, ACM SIGOPS Operating Systems Rev., vol. 29, no. 5, pp. 172-182, Dec. 1995.

Jerry Banks, John S. Carson II and Barry L. Nelson, Discrete-Event System Simulation, PHI, 2001

Andrew S. Tanenbaum, Maarten van Steen, Distributed systems , Pearson Education, 2007


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