TITLE: Publish/Subscribe in a Mobile Environment

AUTHORS:
Yongqiang Huang and Hector Garcia-Molina
Department of Computer Science
Stanford University
Stanford, CA 94305
{yhuang, hector}@cs.stanford.edu

ABSTRACT:
A publish/subscribe system dynamically routes and delivers events from
sources to interested users, and is an extremely useful communication
service when it is not clear in advance who needs what information.
In this paper we discuss how a publish/subscribe system can be
extended to operate in a mobile environment, where events can be
generated by moving sensors or users, and subscribers can request
delivery at handheld and/or mobile devices.  We describe how the
publish/subscribe system itself can be distributed across multiple
(possibly mobile) computers to distribute load, and how the system can
be replicated to cope with failures, message loss, and disconnections.