Crowdsourcing in the OpenMobileNetwork
Mobile network operators usually keep the data about their mobile network topology very secret. However, having this data, many sophisticated applications could be realized. Today's smartphones provide the means to measure cell data with which the mobile network topology of different operators can be approximately derived. The OpenMobileNetwork  uses those smartphone clients and collects cell data via a crowdsourcing approach in order to establish a complete database of base station and WiFi access point locations, their coverage areas, neighboring cell relations and live data, such as traffic, service usage, and number of users.
OpenMobileNetwork for Android (OMNApp)
OpenMobileNetwork for Android (OMNApp)  is a background service that actively collects mobile network data in a crowdsourcing approach in order to estimate and derive base station and WiFi hotspot positions. It further acquires live measurement data, such as the total traffic produced on smartphones or service usage information, in order to enable the modeling and visualization of the current/historic state of the network.
Jewel Chaser  is a location-based game in which you collect virtual jewels by moving to locations in the real world. While you play the game, mobile network and wireless access point data is collected for the OpenMobileNetwork  in order to enrich the existing database.
In order to play it, just click on Start Collecting, check the map, and go towards one of the symbols shown on the map. As soon as you are close enough to a jewel, it will be collected automatically. However, you need to have the map open in order to collect the jewel. This means you can check where the jewels are, close the app, and open it later again as soon as you are close to one of the jewels. In order to collect jewels, your GPS has to be turned on.
Crowdsourcing - your help is appreciated!
By using those apps, you contribute with your data in building an open-source semantic dataset for mobile networks within the OpenMobileNetwork  research project. These apps do not acquire any personal information from you. Thank you for supporting this open-source research initiative!
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