Wireless Access

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  • 1.  GPS Positioning for Internal APs

    Posted yesterday

    We have just tried putting a toe in the water with GPS by installing a few AP635s as near to windows as possible, but have a very low success rate in getting signal and the results are seemingly contradictory, for example we have two APs in relatively the same position at each end of a long room, with exactly the same visibility of the sky and one is getting GPS signal where the other isn't.  Out of 16 APs, all located near windows, we only have 6 which report a location.

    I was wondering whether anyone can share good practice, tips for successful deployment etc.  

    Thanks in advance



  • 2.  RE: GPS Positioning for Internal APs

    Posted yesterday

    Have you given it some time? It may take 24h or more for APs to accurately report GPS location, which is because they 'work together' to get a full GPS picture from different APs that only have limited view on GPS satellites. Also, I think per floor there are 3 APs selected as anchor APs, the others are derived from those anchors.



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    Herman Robers
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    If you have urgent issues, always contact your HPE Aruba Networking partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact HPE Aruba Networking TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or HPE Aruba Networking.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
    ------------------------------



  • 3.  RE: GPS Positioning for Internal APs

    Posted yesterday

    Hi Herman,  yes they have had three weeks to get a lock on any satellites. This is a test building and my plan has been to have two GPS-enabled APs near windows on each floor, so they can get co-ordinates and then communicate with the other non-GPS AP-515 via FTM and across the whole building there will be 12 which have GPS.

    I have been looking for information on how to get the APs to use FTM to talk to each other but have drawn a blank - this seems to be little or no documentation on this, but unless the AP-635 lock on to GPS it's not going to be much use anyway.




  • 4.  RE: GPS Positioning for Internal APs

    Posted yesterday

    This is currently available via enabling `indoor-sp-location` in the GPS stub which allows APs with an ellipse to share OTA via beacons. Which AOS version? Managed by Central or MCR?




  • 5.  RE: GPS Positioning for Internal APs

    Posted 23 hours ago
    Edited by DR-fb7371 23 hours ago

    Thanks Josh, you have hit one of the problems on the head - all the documentation is for central, but I am on AOS 8.13 with Conductors & cluster and I can't find anything for that

    So you see I have two problems, one is that the AP-635 seem to struggle to get a GPS lock and the other is if I got GPS positions on my AP-635 I can't find out how to propagate that across the rest of my APs.




  • 6.  RE: GPS Positioning for Internal APs

    Posted 23 hours ago

    For the second problem, look here:

    Expand 8.13.0.0: https://arubanetworking.hpe.com/techdocs/ArubaOS/AOS_8x_WebHelp/Content/arubaos-solutions/AOS8-Whats-New.htm

    Enable Broadcast GPS of the AP (indoor-sp-location is the CLI command): https://arubanetworking.hpe.com/techdocs/ArubaOS/AOS_8x_WebHelp/Content/arubaos-solutions/access-points/gps.htm




  • 7.  RE: GPS Positioning for Internal APs

    Posted 8 hours ago

    Thank you Josh, that's really helpful.  I had created a GPS profile, but hadn't found the explanation of the "Broadcast GPS" option.   I will give the struggling ones some time to see if that helps, but there may not be enough for that to work (which takes me back to my first point of why most APs don't get a reliable signal).

    However, I still can't find anything that explains how the GPS enabled APs interact with the non-GPS ones using FTM or how to see the calculated location for non-GPS APs.  "show ap details" only includes the location specified during provisioning and "show ap gps" understandably doesn't work on non-gps APs.  I have ftm-responder-enable set on the VAP.




  • 8.  RE: GPS Positioning for Internal APs

    Posted 2 hours ago

    Hey David,

    Specifically in AOS-8.13 and AOS-10.8, the Indoor SP Location feature was added using Beacons and Probe Responses, rather than FTM exchanges, to share GNSS location (ellipse) to neighboring APs.