A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Regulating Publication of Event State Information
Author(s) : J. Brok
Filename : draft-brok-simple-regulate-publish-00.txt
Pages : 28
Date : 2005-2-14
The Session Initiation Protocol (SIP) Extension for Event State
Publication describes a mechanism for a User Agent Client (UAC) to
publish event state information to a User Agent Server (UAS).
Generally, the UAC is free to monitor certain resources at a certain
rate and publish changes of their event state, for instance with a
document based on the Presence Information Data Format (PIDF) for the
presence event package. However, for a UAC on a mobile device,
monitoring some resources can be costly in terms of battery and
computing, for instance GPS or voice analysis. Although some
mechnisms exist for a UAC to deduce whether event state publication
is needed and at what rate publish messages may be sent, but these
are rather coarse and reactive in nature. This memo defines a
solution for a UAS to regulate monitoring and publications by
providing detailed information to the UAC regarding which resources
to monitor, at what rate, the urgency and the required probability.
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