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Re: xAP on Internet & GSM to support telemedicine



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Hi Andre,

All ready for June 11th ?

Are you using a TCP transport for xAP ?

Not sure why you would select xAP for this purpose - what specific
advantage you chose it for - or is it because it's simple and low cost
to adopt ?

There is no inbuilt xAP handling for data that exceeds the size of
one datagram (circa 1500 bytes)  We did discuss this and it is fairly
easy to create xAP protocol level additions that achieve this by
sequence numbers  (and maybe ACK requests)  in the header.  This also
overlaps with a UDP missed packet recognition / recovery mechanism.  The
xAP v1.3 spec is flexible enough to allow you to experiment and include
your own header parameters should you wish.  A great flexibility of xAP
is that at a higher level layer schema interactions can supplement the
base protocol.   However I think there maybe better ways of approaching
this solution if you have larger data content needs.

K

On 04/06/2010 19:26, andrevdm wrote:
>
> I am reporting on research work we have done so far to use xAP in
> telemedicine. The aim is to broadcast patient data changes if they
> occur instead of time triggered databased updates. The research
> question is how much data can be carried in the broadcast. The
> receiver of the xAP message will be triggered to retrieve the new data
> via http or ftp.
> The main application is rural areas where internet service is
> restricted or on GSM only.
>
> Any comments that would help our research ? Any comments on using xAP
> over GSM ? over SMS ?
>
>


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Hi Andre,<br>
<br>
&nbsp;&nbsp; All ready for June 11th ?<br>
<br>
&nbsp;&nbsp;&nbsp; Are you using a TCP transport for xAP
?<br>
<br>
&nbsp;&nbsp;&nbsp; Not sure why you would select xAP for this
purpose - what specific
advantage you chose it for - or is it because it's simple and low cost
to adopt ?<br>
<br>
&nbsp;&nbsp;&nbsp; There is no inbuilt xAP handling for data
that exceeds the size of
one datagram (circa 1500 bytes)&nbsp; We did discuss this and it is
fairly
easy to create xAP protocol level additions that achieve this by
sequence numbers&nbsp; (and maybe ACK requests)&nbsp; in the
header.&nbsp; This also
overlaps with a UDP missed packet recognition / recovery
mechanism.&nbsp;
The xAP v1.3 spec is flexible enough to allow you to experiment and
include your own header parameters should you wish.&nbsp; A great
flexibility of xAP is that at a higher level layer schema interactions
can supplement the base protocol. &nbsp; However I think there maybe
better
ways of approaching this solution if you have larger data content
needs.<br>
<br>
&nbsp;&nbsp;&nbsp; K<br>
<br>
On 04/06/2010 19:26, andrevdm wrote:
<blockquote cite="mid:hubgg1+s711@xxxxxxx"
type="cite"><span
style="display: none;">&nbsp;</span>

<div id="ygrp-text">
<p>I am reporting on research work we have done so far to use xAP in
telemedicine. The aim is to broadcast patient data changes if they
occur instead of time triggered databased updates. The research
question is how much data can be carried in the broadcast. The receiver
of the xAP message will be triggered to retrieve the new data via http
or ftp. <br>
The main application is rural areas where internet service is
restricted or on GSM only. <br>
<br>
Any comments that would help our research ? Any comments on using xAP
over GSM ? over SMS ?<br>
<br>
</p>
</div>


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