====== LTE and OpenCelliD for geolocation?  ======
===== Background =====
  * This is a report on an idea that we had and the feasibility of it, hence the question mark in the title.
  * The idea was to take the information returned by an LTE Modem and map it to the geo-location of the mobile tower where it is connected to in that point in time.
  * The mapping would be done using the information from the available OpenCelliD databases which can be downloaded.
  * http://wiki.opencellid.org/wiki/Menu_map_view

===== First Test - South Africa =====
  * We tested using the reply from this command **uqmi -d /dev/cdc-wdm0 --get-system-info**.
  * From it we could get the following:

| **Item** | **Value** |
|mcc |655  |
|mnc | 07  |
|tracking_area_code |18 |
|cell_id  |80  |

  * Doing a search through the CSV file for that combination unfortunately resulted in none found :-(.
  * This test was using a **Cell C** sim card. We also tried a **Vodacom** sim card that also returned no results.
  * The next test we did was in Greece with the hope that the OpenCelliD database for Greece will have more up to date and complete information.

===== Second Test - Greece =====
  * In Greece we used the following for our search, based on the reply from our LTE router.

| **Item** | **Value** |
|mcc |202  |
|mnc | 05  |
|tracking_area_code |4024 |
|cell_id  |808449  |

  * Searching through the available data for Greece from OpenCelliD also yielded no results.

===== Third test - API =====
  * We then fed the values to OpenCelliD's API.
  * Finally we got results but with this message in the reply
<code javascript>
{
    "status": "ok",
    "balance": 4998,
    "lat": -26.535781,
    "lon": 27.907425,
    "accuracy": 35377,
    "message": "This cell tower was not found in OpenCelliD. However, we served a location from the Unwired Labs LocationAPI (unwiredlabs.com), an Enterprise Geolocation service with over 100 million cell towers.",
    "aged": "1",
    "address": "Ilona Road, Debonair Park, Emfuleni Ward 21, Emfuleni Local Municipality, Sedibeng District Municipality, Gauteng, 1884, South Africa"
}
</code>

===== Conclusion =====

  * OpenCelliD had to use a third party to locate the tower (with an accuracy of 35km).
  * We realised that it is currently not possible or practical when using the downloadable data from OpenCelliD.