An apparatus and methods are provided for sharing cell coverage
information among devices in a cell network. Cell coverage information
includes bitmap models of signal strength to enable intelligent handover
decisions. Mobile terminals are able to receive cell coverage information
over a broadband unidirectional broadcast network, such as a digital
video broadcast network. They are also able to receive cell coverage
information from other mobile terminals via ad hoc wireless signalling.
Mobile terminals are also able to store and upload raw signal
measurements to a cell coverage information center.