Motor vehicle having two modems of different lte categories

A mobile communication device for a motor vehicle, the mobile communication device configured to provide a wireless connection to a mobile communication network, the mobile communications device comprising:

• a basic modem circuit;
• a control unit programmed to transmit and/or to receive data via the wireless connection in a basic mode through the basic modem circuit, the basic modem circuit providing said reception and/or transmission at a predetermined basic bit rate;
• an additional modem circuit that provides a low bit rate that is lower than the basic bit rate for transferring data via the wireless connection,
• wherein the control unit is further programmed to monitor and identify at least one predetermined switching event, and, when said predetermined switching event is identified, to switch from the basic mode into an additional mode in which the control unit transmits and/or receives data through the additional modem circuit, wherein the basic modem circuit and the additional modem circuit are each LTE modem circuits of differing performance categories, wherein the performance category of the basic modem circuit is greater than the CAT-3 standard, and the performance category of the additional modem circuit is the CAT-1 standard or the CAT-0 standard, or is of a performance category supporting machine time communication,
• wherein the control unit is programmed to monitor and identify, as the predetermined switching event, that the motor vehicle is parked, wherein the state of being parked is identified based on a received electronic ignition-off signal, wherein when a predetermined minimum duration without the electronic ignition signal is measured, following the reception of the electronic ignition-off signal, the control unit switches the device from the basic mode into the additional mode.

A method for operating a mobile communication device for a motor vehicle including:

• providing a wireless connection to a mobile communication network via the mobile communication device,
• transmitting and/or receiving data via a control unit of the mobile communication device via the wireless connection, in a basic mode, by using a basic modem circuit at a predetermined basic bit rate,
• monitoring and identifying at least one predetermined switching event via the control unit, and, when the at least one switching event has been identified, switching the mobile communication device operation from the basic mode into an additional mode in which the control unit transmits and/or receives data via the wireless connection by using an additional modem circuit at a low bit rate that is lower than the basic rate,
• where the basic modem circuit and the additional modem circuit are each LTE modem circuits of differing performance categories, wherein the performance category of the basic modem circuit is greater than the CAT-3 standard, and the performance category of the additional modem circuit is the CAT-1 standard or the CAT-0 standard, or is of a performance category supporting machine time communication, and
• identifying, via the control unit, as a switching event, that the motor vehicle is parked, wherein the state of being parked is identified based on the control unit receiving an electronic ignition-off signal, wherein when a predetermined minimum duration without ignition signal is measured, following the reception of the ignition-off signal, the control unit switches the device from the basic mode of operation into the additional mode.