Apparatus, vehicle, method, and computer program for setting a transmission power
Embodiments provide an apparatus, a vehicle, a method, and a computer program for setting a transmission power. The apparatus ( 10 ) is operable to set a transmission power of a vehicular relay transceiver ( 100 ) in a mobile communication system ( 400 ). The relay transceiver ( 100 ) is operable in a vehicle ( 500 ) to relay information between a mobile transceiver ( 200 ) associated with the relay transceiver ( 100 ) and a base station transceiver ( 300 ) of the mobile communication system ( 400 ). The apparatus ( 10 ) comprises a transceiver module ( 12 ) which is operable to transmit a common signal using a transmission power. The transmission power influences a coverage area of the relay transceiver ( 100 ). The relay apparatus ( 10 ) further comprises a controller module ( 14 ) operable to determine information related to a quality of a radio link between the relay transceiver ( 100 ) and the base station transceiver ( 300 ) and information on a state of the vehicle ( 500 ). The controller module ( 14 ) is further operable to set the transmission power based on the information related to the quality of the radio link and based on the information on the state of the vehicle ( 500 ).
1. An apparatus for setting a transmission power of a vehicular relay transceiver in a mobile communication system, the relay transceiver being operable in a vehicle to relay information between a mobile transceiver associated with the relay transceiver and a base station transceiver of the mobile communication system, the apparatus comprising
a transceiver operable to transmit a common signal to the mobile transceiver using a transmission power, the transmission power influencing a coverage area of the relay transceiver; and
a controller operable to determine information related to a quality of a radio link between the relay transceiver and the base station transceiver and information on a state of the vehicle and wherein the controller is further operable to set the transmission power of the common signal based on the information related to the quality of the radio link and based on the information on the state of the vehicle,
wherein the controller is operable to determine information related to a velocity of the vehicle and wherein the controller is further operable to set a repetition rate for transmission power adaptations based on the information related to the velocity of the vehicle.
2. The apparatus of claim 1 , wherein the information related to the quality of the radio link corresponds to information related to one or more elements of the group of a path loss, a receive signal reception power, a signal-to-interference ratio, a signal-to-noise ratio, a signal-to-interference-and-noise ratio, or a receive signal strength indicator.
3. The apparatus of claim 1 , wherein the controller is operable to set the transmission power to a first higher value when the information related to the quality of the radio link indicates a first higher quality of the radio link, and wherein the controller is operable to set the transmission power to a second lower value when the information related to the quality of the radio link indicates a second lower quality of the radio link and/or wherein the controller is operable to determine the information related to the state of the vehicle based on vehicular sensor data obtained from sensors comprised in the vehicle.
4. The apparatus of claim 1 , wherein the information related to the state of the vehicle corresponds to information related to one or more elements of the group of a body attenuation of the vehicle, a window status, a roof-top status, a door status, a trunk status, a predicted change of a window status, a predicted change of a roof-top status, a predicted change of a door status or a predicted change of a trunk status.
5. The apparatus of claim 1 , wherein the information related to the state of the vehicle corresponds to information related to a body attenuation of the vehicle with respect to radio signals transmitted from the transceiver to the mobile transceiver, and wherein the controller is operable to set the transmission power to a first higher value when the information related to the attenuation of the vehicle body indicates a first higher attenuation, and wherein the controller is operable to set the transmission power to a second lower value when the information related to the attenuation of the vehicle body indicates a second lower attenuation.
6. The apparatus of claim 1 , wherein the transceiver is operable to communicate with the mobile transceiver using an adaptable antenna pattern of an adaptable antenna comprising one or more antenna elements located in the vehicle, wherein the controller is further operable to adapt the adaptable antenna pattern based on an angle of arrival of a signal received at the relay transceiver from the base station transceiver.
7. The apparatus of claim 1 , wherein the transceiver is operable to communicate with the mobile transceiver using an adaptable antenna pattern of an adaptable antenna comprising one or more antenna elements located in the vehicle, wherein the controller is further operable to adapt the adaptable antenna pattern based on the information related to the state of the vehicle.
8. The apparatus of claim 7 , wherein the adaptable antenna corresponds to a beamforming or beam-switching antenna comprising a plurality of antenna elements, or wherein the adaptable antenna corresponds to a tiltable antenna, and wherein the controller is operable to adapt the adaptable antenna by forming or switching different beams or by tilting the antenna.
9. The apparatus of claim 7 , wherein the controller is operable to adapt the adaptable antenna based on information related to one or more elements of the group of sensor signals, door contacts, window openers or roof-top contacts.
10. The apparatus of claim 1 , wherein the controller is operable to set the repetition rate to a first more frequent repetition cycle when the information on the velocity of the vehicle indicates a slower first velocity and wherein the controller is operable to set the repetition rate to a second less frequent repetition cycle when the information on the velocity of the vehicle indicates a faster second velocity.
11. The apparatus of claim 1 , wherein the controller is operable to set the repetition rate based on information related to one or more elements of the group of a vehicle acceleration, revolutions per minute, a camera or camera system, a radar sensor, a Light Detection and Ranging or Laser Imaging Detection and Ranging sensor, a location of the vehicle, a route, an arrival at the target destination, usage of park distance control sensors, vehicular traffic, or load of the communication system.
12. A vehicle comprising an apparatus for setting a transmission power of a vehicular relay transceiver in a mobile communication system, the relay transceiver being operable in the vehicle to relay information between a mobile transceiver associated with the relay transceiver and a base station transceiver of the mobile communication system, the apparatus comprising:
a transceiver operable to transmit a common signal to the mobile transceiver using a transmission power, the transmission power influencing a coverage area of the relay transceiver; and
a controller operable to determine information related to a quality of a radio link between the relay transceiver and the base station transceiver and information on a state of the vehicle and wherein the controller is further operable to set the transmission power of the common signal based on the information related to the quality of the radio link and based on the information on the state of the vehicle,
wherein the controller is operable to determine information related to a velocity of the vehicle and wherein the controller is further operable to set a repetition rate for transmission power adaptations based on the information related to the velocity of the vehicle.
13. A method for setting a transmission power of a vehicular relay transceiver in a mobile communication system, the relay transceiver being operable in a vehicle to relay information between a mobile transceiver associated with the relay transceiver and a base station transceiver of the mobile communication system, the method comprising:
transmitting a common signal to the mobile transceiver using a transmission power, the transmission power influencing a coverage area of the relay transceiver;
determining information related to a quality of a radio link between the relay transceiver and the base station transceiver and information on a state of the vehicle;
setting the transmission power of the common signal based on the information related to the quality of the radio link and based on the information on the state of the vehicle;
determining information related to a velocity of the vehicle, and
setting a repetition rate for transmission power adaptations based on the information related to the velocity of the vehicle.
14. A non-transitory computer-readable storage medium in which a program is saved, the program comprising instructions which, when executed in a computer or processor, cause the computer or processor to perform a method for setting a transmission power of a vehicular relay transceiver in a mobile communication system, the relay transceiver being operable in a vehicle to relay information between a mobile transceiver associated with the relay transceiver and a base station transceiver of the mobile communication system, the method comprising:
transmitting a common signal to the mobile transceiver using a transmission power, the transmission power influencing a coverage area of the relay transceiver;
determining information related to a quality of a radio link between the relay transceiver and the base station transceiver and information on a state of the vehicle;
setting the transmission power of the common signal based on the information related to the quality of the radio link and based on the information on the state of the vehicle
determining information related to a velocity of the vehicle, and
setting a repetition rate for transmission power adaptations based on the information related to the velocity of the vehicle.