If you follow the mobile space, you know that one of the hot topics right now
is location-based services (LBS). LBS allows you to build applications that
adapt to users' locations and situations. Without requiring your users to
enter ZIP codes or addresses, you can filter data and provide the information
that is most relevant to them. Location information plays a key part in
applications such as asset tracking and sales or workforce automation. Being
able to automatically determine location removes the burden from the end user
of determining where the application is being used and allows the application
to alter its behavior as the user travels.
Location-based services can derive location in many ways: time difference of
arrival (TDOA), enhanced observed time difference (E-OTD), or global
positioning system(GPS). TDOA requires that multiple base stations
triangulat... (more)