Universal Inbox: providing extensible personal mobility and servicemobility in an integrated communication network
Raman, B.; Katz, R.H.; Joseph, A.D.
Mobile Computing Systems and Applications, 2000 Third IEEE Workshop on.
Volume , Issue , 2000 Page(s):95 - 106
Digital Object Identifier 10.1109/MCSA.2000.895385
Summary:Communication technology has been seeing rapid growth,
characterized by new access networks (e.g. cellular, pager, wireless-IP)
and end-devices (e.g. PDAs, two-way pagers, multi-model access devices).
There have been several efforts at integrating services across such
heterogeneity. However, little work has been done on identifying an
underlying architecture for such an integration. We identify the
requirements for this in the context of an integrated network with
heterogeneous end-points. The Universal Inbox provides (a) generic data
type transformation, (b) customizable redirection of incoming
communication based on user preference profiles, and (c) device name
mapping and translation. We present an architecture mapping these
functionalities to reusable infrastructure components realized as
Internet services. The unique feature of the architecture is its
extensibility-it allows not only the integration of existing end-points
but also extension in terms of the end-devices and novel services it can
handle. We have implemented the Universal Inbox components in a test-bed
setting, supporting a variety of devices and services: GSM cellular
phones, voice-over-IP end-points, voice-mail, e-mail, instant messaging
service, etc. With our architecture, building personal mobility and
service mobility features and extending them to new end-points has been
easy in concept and in implementation. The performance analyses with the
initial implementation show that even the heavy-weight components can be
scaled to accommodate a large user base
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