Michele, Robert already had quite some info on the AGPS, even before I asked the question. Have a look at http://lists.openmoko.org/pipermail/community/2006-November/000118.html
Regards, Marc. On 1/25/07, Michele Manzato <[EMAIL PROTECTED]> wrote:
Some additional questions on this subject: 1. Is there any "A-GPS standard" whatsoever? 2. I have heard elsewhere (Wikipedia) that in A-GPS the computation effort is shared between the device and the A-GPS Server. According to a previous post, the device just downloads the ephemeris table so there isn't any actual "computation sharing", but rather a download of a pre-computed table download. Correct? 3. A-GPS involves additional data traffic and thus (potential) additional costs. Does it use a normal GSM/GPRS IP-based data transfer? does it use some out-of-band GSM/GPRS control messages? or does it get data from broadcasts in the local cell (e.g. GSM cell-broadcast)? 4. if the answer to above is GPRS: is it possible to estimate in advance how much additional traffic (in Kbytes/day of full operation)? 5. Are there any known estimations on the overall (A)GPS performance on the Neo (esp. fix time) 6. Coming to the Neo1973. In order to save costs, can the "Assisted" function in A-GPS be disabled through software API? 7. Is it possible to tell whether A-GPS is actually in use or not? 8. Is it possible to tell/know which is the A-GPS server currently in use? I realise that 1..6 of the above are indeed general questions about A-GPS technology, not really specific to the Neo or to OpenMoko. Sorry it I sound a bit off-topic, but I did not find them answered plainly anywhere. Reference links would be great. Many thanks in advance! Michele -----Messaggio originale----- Da: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Per conto di Michael 'Mickey' Lauer Inviato: giovedì 25 gennaio 2007 1.01 A: community@lists.openmoko.org Oggetto: Re: Need info on AGPS NOTE: please send mails in text format Marc Verwerft wrote: >The chip in the Neo1973 is a Global Locate AGPS. Anybody know what type? Hammerhead maybe? I think Sean already confirmed that it is indeed the Hammerhead chipset. Regards, :M: -- Michael 'Mickey' Lauer | IT-Freelancer | http://www.vanille-media.de _______________________________________________ OpenMoko community mailing list community@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/community -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.410 / Virus Database: 268.17.10/651 - Release Date: 24/01/2007 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.410 / Virus Database: 268.17.10/651 - Release Date: 24/01/2007 _______________________________________________ OpenMoko community mailing list community@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/community
_______________________________________________ OpenMoko community mailing list community@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/community