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RE: Remote UI BoF at IETF63

2005-07-05 07:18:02
Hi Vlad,

  Thanks for the reply.
  I will now go through the draft for a better understanding.

Regards,
Saravanan T S

-----Original Message-----
From: ietf-bounces(_at_)ietf(_dot_)org 
[mailto:ietf-bounces(_at_)ietf(_dot_)org]On Behalf Of
Vlad(_dot_)Stirbu(_at_)nokia(_dot_)com
Sent: Tuesday, July 05, 2005 1:31 PM
To: saravanants(_at_)tataelxsi(_dot_)co(_dot_)in; ietf(_at_)ietf(_dot_)org; 
remoteui(_at_)ietf(_dot_)org
Subject: RE: Remote UI BoF at IETF63


Hi,

-----Original Message-----
From: ietf-bounces(_at_)ietf(_dot_)org 
[mailto:ietf-bounces(_at_)ietf(_dot_)org]On 
Behalf Of
ext saravanan t s
Sent: 04 July, 2005 18:06
To: ietf(_at_)ietf(_dot_)org; remoteui(_at_)ietf(_dot_)org
Subject: RE: Remote UI BoF at IETF63


Hi Vlad & others

Just adding some opinions on this from my side, since I found 
this idea
interesting:

1. Even though today's clients are powerful enough to handle 
the widgets and
adaptation, maybe on the server side, certain computations 
and algos could
be clubbed to reduce the load on the pda's and other devices. 
The extra
resources (maybe read "power") on the pda's and other devices 
could be used
for adding additional features (or maybe extending battery life?)


Talking about power saving, I think that the most important 
feature that we have here is that the application logic is run 
entirely in the server side. This thing will definitely save 
power and also will reduce the software complexity of the 
client. If the client supports widgets natively it will use 
them anyway to render the UI regardless the adaptation is done 
on the server side or not.

Lets not forget that the servers also are not having unlimited 
resources and it would be nice to use the resources where they 
are available (i.e. clients with native widgets).

2. How many look and feel "standards" or maybe "UI Languages" 
the server can
support? Does this imply that there will be only a limited 
set of L&F that
can be supported by the server and rendered on the client? 
Will this be a
limitation for different devices (talking of embedded) having 
different
levels of needs on widgets (qualitatively: very simple to 
quite complex)?


The protocol should be UI language independent and I believe 
that it will not add "technical" constraints on the server 
side, those will be rather of "business" nature.

From the protocol point of view the UI is just a collection 
of widgets. Now it is up to the widgets to be very simple or complex.

3. On the other hand, there may be one more advantage to have 
clients send
the description of the L&F sent to the server & server 
managing the client
based on its description - is it possible that the bandwidth 
will be used
more efficiently than the existing protocols that seem to 
achieve similar
purposes for the end user?


I think that by sending widget description over the wire you 
already use the bandwidth more efficiently than existing 
protocols (i.e. framebuffer-level or graphics-level) which 
tend to send more "screen captures" that in the end eats more 
bandwidth.

Even so, in the case of widget-level protocol, the client and 
server exchange information about look and feel during the 
"session setup" step. Please have a look at the proposed 
protocol draft here 
http://www.ietf.org/internet-drafts/draft->stirbu-lrdp-00.txt.

Vlad


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