W3C home > Mailing lists > Public > www-mobile@w3.org > June 2002

RE: Issues and future work for CC/PP

From: Keskar, Dhananjay V <dhananjay.v.keskar@intel.com>
Date: Fri, 21 Jun 2002 16:43:41 -0700
Message-ID: <B9ECACBD6885D5119ADC00508B68C1EA0CADB6E4@orsmsx107.jf.intel.com>
To: "'www-mobile@w3.org'" <www-mobile@w3.org>


Our list of proposed work items is around the following issues:
1.	Consideration of Dynamic Properties
2.	Dealing with Multiple Vocabularies

Consideration of Dynamic Properties :
Emerging high-end mobile devices distinguish themselves in their ability to
adapt to changing computational requirements and environmental conditions.
For example, power management policies adapt the speed of the processor
based on remaining battery capacity, application workloads, and quality of
service requirements. For network services to participate in the adaptation,
the state of the client device must be communicated as conditions change.
Current implementations of CC/PP and the various transport mechanisms do not
handle rapidly changing attributes efficiently. Thus mechanisms that
efficiently represent and convey dynamic properties in CC/PP profiles need
to be considered.

Example Usage Scenarios

1.	Several PocketPC devices are capable of changing screen brightness
and properties either through user preferences, or automatically as a result
of change in ambient lighting. Thus, a property such as 'ScreenState' could
have values such as 'Backlighted', 'HighContrast', 'LowBrightness', which
would change during a browsing session. If these changes are efficiently
conveyed to a content server, the server may be able to decide upon image
content using the optimal tradeoff between bandwidth and device state. 

2.	Rich client devices permit user preferences for power management
features along with the ability to monitor current battery state. Evaluation
of such preferences with regard to current state can dynamically change the
values of certain properties, such as 'AllowJavaApplets', which could help a
content server decide upon the appropriate form of content.

Dealing with Multiple Vocabularies
While certain vocabularies such as UAProf will be pervasive, there will be a
need for other distinct and complementary vocabularies for certain device
classes. Efforts towards a standard, core set of attributes supported by all
servers is necessary. At the same time, it should be possible to negotiate
and match profiles from different vocabularies based on those supported by
the server, and those available on the client.


Dhananjay V. Keskar
Emerging Platforms Lab
Intel R&D 

-----Original Message-----
From: Butler, Mark [mailto:Mark_Butler@hplb.hpl.hp.com] 
Sent: Thursday, June 13, 2002 9:02 AM
To: 'www-mobile@w3.org'
Subject: Issues and future work for CC/PP

Hi all

A while back I said that it is not possible to submit issues to the CC/PP
Working Group until we get to the next stage in the process (Candidate
Recommendation). After some discussion with the W3C this week, my position
has changed on this.

If you have any issues with CC/PP, or you have any suggestions for future
work, then please submit them to me via this email list. It may not be
possible to reply to these issues until the next stage in the process, but
there is no reason why we can't collect them now. I'll take responsibility
for collecting and coordinating these issues and requests.

Note this is a formal process so you need to make it clear that you want me
to respond to the posting in that way. Furthermore it would be helpful if
you could structure your issue / suggestion in the following way:
- A summary sentence that describes the issue / suggestion.
- A paragraph that gives more details

Also note I'm not planning to go back through www-mobile looking for issues,
so if you feel something needs to be addressed you need to post it again or
refer me to the post you made. Hope that is okay!

PS just in case people haven't seen it already, you may be interested in
JSR-188 on CC/PP - see 

best regards

Mark H. Butler, PhD
W3C CC/PP Working Group Chair
Research Scientist                HP Labs Bristol
Internet: http://www-uk.hpl.hp.com/people/marbut/
Received on Friday, 21 June 2002 19:44:17 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 20:16:03 UTC