Looking into the past: enhancing mobile publish/subscribe middleware

ABSTRACT

Publish/subscribe (pub/sub) middleware facilitates loosely coupled cooperation and fits well the needs of spontaneous, ad-hoc interaction. However, newly started mobile applications have to be bootstrapped to interpret the current flow of notifications correctly and commence normal operation. This problem is aggravated in mobile environments where disconnections and context changes occur frequently.In this paper, we propose two forms of subscriptions that allow consumers to subscribe to past events to improve the bootstrapping process. The first form uses logical mobility to harness possible client movements and subscribe in future locations to bootstrap virtual counterparts before the application needs the data. The second form is based on buffers and offers a way to integrate data repositories distributed in the network.

REFERENCES

• 1: Swarup Acharya , Michael Franklin , Stanley Zdonik, Balancing push and pull for data broadcast, Proceedings of the 1997 ACM SIGMOD international conference on Management of data, p.183-194, May 11-15, 1997, Tucson, Arizona, United States
• 2: Jean Bacon , Ken Moody , John Bates , Richard Hayton , Chaoying Ma , Andrew McNeil , Oliver Seidel , Mark Spiteri, Generic Support for Distributed Applications, Computer, v.33 n.3, p.68-76, March 2000 [doi>10.1109/2.825698]
• 3: M. Caporuscio, P. Inverardi, and P. Pelliccione. Formal analysis of clients mobility in the Siena publish/subscribe middleware. Technical report, Department of Computer Science, University of L'Aquila, Oct. 2002.
• 4: B. Carbunar, M. Valente, and J. Vitek. Corelime: a coordination model for mobile agents. In Proc. of Intl Workshop ConCoord 2001, 2001.
• 5: Nicholas Carriero , David Gelernter, Linda in context, Communications of the ACM, v.32 n.4, p.444-458, April 1989 [doi>10.1145/63334.63337]
• 6: Design and evaluation of a wide-area event notification service, ACM Transactions on Computer Systems (TOCS), v.19 n.3, p.332-383, Aug. 2001 [doi>10.1145/380749.380767]
• 7: Gianpaolo Cugola , Elisabetta Di Nitto , Alfonso Fuggetta, The JEDI Event-Based Infrastructure and Its Application to the Development of the OPSS WFMS, IEEE Transactions on Software Engineering, v.27 n.9, p.827-850, September 2001 [doi>10.1109/32.950318]
• 8: L. Fiege, F. C. Gärtner, S. B. Handurukande, and A. Zeidler. Dealing with uncertainty in mobile publish/subscribe middleware. In 1st International Workshop on Middleware for Pervasive and Ad-Hoc Computing, to appear, 2003.
• 9: L. Fiege, F. C. Gärtner, O. Kasten, and A. Zeidler. Supporting mobility in content-based publish/subscribe middleware. In IFIP/ACM Middleware 2003 (to appear), 2003.
• 10: Ludger Fiege , Gero Mühl , Felix C. Gärtner, A modular approach to build structured event-based systems, Proceedings of the 2002 ACM symposium on Applied computing, March 11-14, 2002, Madrid, Spain [doi>10.1145/508791.508864]
• 11: Yongqiang Huang , Hector Garcia-Molina, Publish/Subscribe in a mobile enviroment, Proceedings of the 2nd ACM international workshop on Data engineering for wireless and mobile access, p.27-34, May 2001, Santa Barbara, California, United States [doi>10.1145/376868.376889]
• 12: René Meier , Vinny Cahill, STEAM: Event-Based Middleware for Wireless Ad Hoc Network, Proceedings of the 22nd International Conference on Distributed Computing Systems, p.639-644, July 02-05, 2002
• 13: R. Meier, M.-O. Killijian, R. Cunningham, and V. Cahill. Towards proximity group communication. In Banavar:2001:MobileMiddleware, editor, Advanced Topic Workshop Middleware for Mobile Computing (Middleware 2001), 2001.
• 14: Gero Mühl, Generic Constraints for Content-Based Publish/Subscribe, Proceedings of the 9th International Conference on Cooperative Information Systems, p.211-225, September 05-07, 2001
• 15: G. Mühl. Large-Scale Content-Based Publish/Subscribe Systems. PhD thesis, Darmstadt Univ. of Technology, 2002.
• 16: G. Mühl , L. Fiege , F. C. Gärtner , A. Buchmann, Evaluating Advanced Routing Algorithms for Content-Based Publish/Subscribe Systems, Proceedings of the 10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems (MASCOTS'02), p.167, October 11-16, 2002
• 17: LIME: A Middleware for Physical and Logical Mobility, Proceedings of the The 21st International Conference on Distributed Computing Systems, p.524, April 16-19, 2001
• 18: Julio C. Navas , Tomasz Imielinski, GeoCast—geographic addressing and routing, Proceedings of the 3rd annual ACM/IEEE international conference on Mobile computing and networking, p.66-76, September 26-30, 1997, Budapest, Hungary [doi>10.1145/262116.262132]
• 19: B. Schilit, N. Adams, and R. Want. Context-aware computing applications. In IEEE Workshop on Mobile Computing Systems and Applications, 1994.
• 20: Sun Microsystems, Inc. Java Message Service Specification 1.1, 2002.
• 21: Peter Sutton , Rhys Arkins , Bill Segall, Supporting Disconnectedness-Transparent Information Delivery for Mobile and Invisible Computing, Proceedings of the 1st International Symposium on Cluster Computing and the Grid, p.277, May 15-18, 2001
• 22: Cheng Lin Tan , Stephen Pink, MobiCast: a multicast scheme for wireless networks, Mobile Networks and Applications, v.5 n.4, p.259-271, Dec. 2000 [doi>10.1023/A:1019125015943]
• 23: Andreas Zeidler , Ludger Fiege, Mobility Support with REBECA, Proceedings of the 23rd International Conference on Distributed Computing Systems, p.354, May 19-22, 2003