Hi, thanks for going above and beyond and using 3 phones to collect data, that's truly appreciated!
It is indeed useful and valuable to collect data with multiple phones with SIM cards from different providers. The unique logical identifiers we use for cell networks contain both the radio type (GSM/2G, WCDMA/3G, LTE/4G), the mobile country code and mobile network code. The combination of the later two identifies the cell network provider and is also stored on the SIM card. To truly capture all available cell networks in any given location, we'd therefor need phones with SIM cards for every cell provider and force each of them into 2G/3G/4G mode, for all modes that are available at that location. With five providers and three modes that would mean having 15 different phones, which is fairly impractical. That's why we rely on multiple people with different phones and SIM cards to capture this information. When it comes time for any single phone to determine its own position, it will only use a single radio type and a single cell provider, so having data from multiple providers won't help to getter a better position estimate for any particular single user. But having data from multiple providers means that more phones from more users will be able to get a position estimate at all. Best, Hanno > On 13.04.2016, at 06:37, Dmitry Zaharov <[email protected]> wrote: > > Greetings! > > I'm developing an application, which uses the MLS data for the calculating > the particular mobile device position. > Taking it all serious, I'm "stumbling" with 3 different smartphones > operated by 3 different cell providers. > > So, the question is - is it worth to do this way? > > I mean, - if the GSM network is giving the information about the serving > cell only, > so, using the 3 different operators' connections I'm picking more (at least > 3 cells') information for Stumbler. > Is it correct? > Will I provide more useful data for the MLS service, to get more precise > location in future? > > Dmitrijs. > > -- > Best regards, > Dmitry Zaharov mailto:[email protected] > http://www.div.lv - ePublishing. Modern web projects development and support > _______________________________________________ > dev-geolocation mailing list > [email protected] > https://lists.mozilla.org/listinfo/dev-geolocation _______________________________________________ dev-geolocation mailing list [email protected] https://lists.mozilla.org/listinfo/dev-geolocation
