Content-Based Publish-Subscribe in a Mobile Environment

Abstract

Content-based publish-subscribe is emerging as a communication paradigm able to cope with the needs of scalability, flexibility, and reconfigurability typical of highly dynamic distributed applications. However, very few efforts address dynamic changes in the topology of the publish-subscribe distributed dispatching infrastructure—a fundamental challenge in mobile computing scenarios. In this chapter we illustrate the problems posed by mobility in the context of publish-subscribe, discuss protocols and integrated solutions proposed by our research group, and survey the state of the art in this research area. ∗G. Cugola and G.P. Picco ([cugola,picco]@elet.polimi.it) are with the Dipartimento di Elettronica e Informazione, Politecnico di Milano, Italy. A.L. Murphy (amy.murphy@unisi.ch) is with the Faculty of Informatics, University of Lugano, Switzerland.