What is the average (or range) value for GSM cell (i.e. base station, antenna, ..) density in metropolitan areas? (e.g. in cities like London, Paris, Rome.)
Is there any publicly available information about the topic?
Please note that I am *not* asking for actual base station location, as I know that information is protected, rather an average figure (e.g. each operator has on average N base stations per sqKm in a metropolitan area).
Is there any "example" data set available from ETSI?
Thank you in advance for any pointer.