Abstract: Embodiments provide a first apparatus, comprising: a GNSS receiver configured to receive GNSS signals, a mobile communication transceiver configured to operate in a mobile communication network, wherein the first apparatus is configured to determine at least one parameter based on the received GNSS signals or use at least one parameter determined by a second or third apparatus based on GNSS measurements, wherein the first apparatus is configured to receive with the mobile communication transceiver an information message from a second apparatus or a third apparatus of the mobile communication network, the information message comprising an integrity information describing an integrity status of the GNSS signals, wherein the first apparatus is configured to at least one out of determine the at least one parameter in dependence on the integrity information, report the at least one parameter taking into account the integrity information, take a specific action in dependence on the integrity information.