Meraki

SamanthaBandini · ‎Oct 23 2018

I'm testing the Meraki positioning provided by Meraki's Scanning API. I positioned 4 Meraki (2 MR33, 1 MR32 and 1 MR42) in a floorplan of 80 square meters, as can be seen in the attached map image. I noticed some strange behavior. Floorplan 1) The data sent by the 4 meraki are not synchronized, each meraki sends its detections every minute and a half more or less, but not at the same time, they should not work together to estimate the most accurate position? Is there a way to set something to improve sync? 2) The coordinates provided are very far from the actual data. We did a test by placing a smartphone connected to the Meraki network in coordinates (9.5.7.5) and left it there for 15 minutes to see the accuracy of the positioning with the APIs. The results can be seen in the figure below. (B = ApMacAddress, E = Time, R = X, S = Y, T = unc) Surveys With this equipment is there an optimal way to place them?

SamanthaBandini · ‎Oct 6 2018

Is it possible in the dashboard to specify the dimension in meters of a floorplan? In the documentation (Using_a_Floor_Plan_or_Custom_Map_in_Dashboard) it says that you can optionally specify the meters, but I do not see this option now, has it been removed? So how can it calculate the x and y given in the Scanning API POSTs without knowing the size of the floorplan?

SamanthaBandini · ‎Oct 2 2018

Hi, thank you for your fast reply. I already took a look at these cameras and they seemed like a good alternative, but I did not find any APIs to receive this information programmatically. Are APIs provided or will be provided to receive information from this camera in the future?

SamanthaBandini · ‎Oct 2 2018

I'm going to realize an indoor positioning application using Cisco Meraki. I have only one access point (MR33) for now. It follows a couple of questions to which I can not find an answer at the moment. I have only one AP, so it is not able to calculate the information of the position x and y. From the Scanning API is there an information from which we can calculate the distance from the AP? Using RSSI? I wondered if it was possible to use the "rssi" data sent to calculate a very approximate distance in the following way: d = 10 ^ ((P-Rssi) / 10n) (n ranges from 2 to 4). (This is commonly seen as rssi change the distance formula) But I understood that the information given in 'rssi' value is actually the Signal To Noise, and therefore not the RSSI used in that formula. Any tips? Using UNC? In my case 'unc' value is very variable even with only one AP, going from 0 to 49. Could I use this in any way? Is there a way to access this Meraki information more frequently? Since Scanning APIs POSTs arrive at intervals of 60 secs. The only alternatives are to create a device that sniffs these probe requests or use an app installed on mobile devices?

SamanthaBandini · ‎Oct 2 2018

Has anyone found an answer to this question until today? I also encountered the same problem, and I wondered the same thing. Could it all be derived from the fact that more access points are needed to get useful information for the analytics? Even using third-party tools such as those listed in the link shared by @colo I imagine the use of multiple APs is required, even if this is not specified. Maybe @Lewis, as in my case, had only one AP available?

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Testing Scanning API for indoor location

Specify floorplan dimensions in meters

Re: Using Scanning API for indoor location

Using Scanning API for indoor location

Re: MR33 Location and scanning API post frequency