Re: xAP on Internet & GSM to support telemedicine

["andrevdm" <andrevdm@xxxxxxxxx>]

Kevin,

thanks - yes we are ready, everyone has soccer fever !!! you watching on
SKY ?

To answer you q, yes, over TCP and because it is simple and low cost to
adopt.

the idea is not to transfer larger messages initially, but only to send a
"warning" on those patients information that has changed, or
basic info on new patients that have been added.

The sequential numbering is a great idea which I will try. This will be
especially handy when having to go the GSM short message service route. Of
course this is only the case when TCP is not available.

What "better ways" do you suggest for the larger content messages
?


--- In xap_automation@xxxxxxx, Kevin Hawkins <yahoogroupskh@...>
wrote:
>
> 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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