Methods for a communication device for controlling a radiation boundary area, method for a network entity, apparatus, vehicle and computer program

1 . A method for a communication device of a vehicle for controlling a radiation boundary area, comprising:

receiving information about the radiation boundary area, wherein the radiation boundary area is allocated by a network entity;

receiving a threshold for a maximal radiation energy density outside the radiation boundary area;

approximating at least one antenna system parameter of the communication device based on the received information about the radiation boundary area for setting a radiation pattern of the antenna system to the radiation boundary area;

configuring the antenna system to generate a radiation pattern to radiate into the radiation boundary area using the at least one antenna system parameter, such that a radiation energy density outside the radiation boundary area does not exceed the maximal radiation energy density;

transmitting information about the radiation pattern of the antenna system to the network entity;

receiving updated information from the network entity in response to the transmitted information, wherein the updated information comprises information about at least one updated antenna system parameter of the communication device; and

configuring the antenna system with the received at least one updated antenna system parameter.

2 . The method according to claim 1 , further comprising transmitting an antenna system capability of the communication device to the network entity prior to receiving information about the radiation boundary area.

3 . The method according to claim 1 , further comprising

generating a quality metric, which indicates a match of the radiation pattern with the radiation boundary area; and

transmitting the quality metric to the network entity.

4 . The method according to claim 1 , wherein approximating the at least one antenna system parameter comprises performing an inverse discrete Fourier transform of an array factor limit corresponding to the radiation boundary area.

5 . The method according to claim 1 , wherein approximating the at least one antenna system parameter comprises determining Fourier Coefficients to adjust the radiation pattern of the antenna system to the radiation boundary area.

6 . The method according to claim 1 , further comprising determining information about an environment of the communication device, and transmitting the information about the environment to the network entity.

7 . The method according to claim 1 , further comprising determining a movement speed of the communication device and transmitting information about the movement speed of the communication device to the network entity.

8 . A vehicle communication system for controlling a radiation boundary area, comprising:

one or more communication interfaces; and

a control device comprising a processing apparatus operatively coupled to the one or more communication interfaces, the control device and the one or more communication interfaces being configured to

receive information about the radiation boundary area, wherein the radiation boundary area is allocated by a network entity;

receive a threshold for a maximal radiation energy density outside the radiation boundary area;

approximate at least one antenna system parameter of the communication device based on the received information about the radiation boundary area for setting a radiation pattern of the antenna system to the radiation boundary area;

configure the antenna system to generate a radiation pattern to radiate into the radiation boundary area using the at least one antenna system parameter, such that a radiation energy density outside the radiation boundary area does not exceed the maximal radiation energy density;

transmit information about the radiation pattern of the antenna system to the network entity;

receive updated information from the network entity in response to the transmitted information, wherein the updated information comprises information about at least one updated antenna system parameter of the communication device; and

configure the antenna system with the received at least one updated antenna system parameter.

9 . The vehicle communication system according to claim 8 , wherein the control device and one or more communication interfaces are configured to transmit an antenna system capability of the communication device to the network entity prior to receiving information about the radiation boundary area.

10 . The vehicle communication system according to claim 8 , wherein the control device and one or more communication interfaces are configured to

generate a quality metric, which indicates a match of the radiation pattern with the radiation boundary area; and

transmit the quality metric to the network entity.

11 . The vehicle communication system according to claim 8 , wherein the control device and the one or more communication interfaces are configured to approximate the at least one antenna system parameter by performing an inverse discrete Fourier transform of an array factor limit corresponding to the radiation boundary area.

12 . The vehicle communication system according to claim 8 , wherein the control device and one or more communication interfaces are configured to approximate the at least one antenna system parameter by determining Fourier Coefficients to adjust the radiation pattern of the antenna system to the radiation boundary area.

13 . The vehicle communication system according to claim 8 , wherein the control device and one or more communication interfaces are configured to determine information about an environment of the communication device, and transmitting the information about the environment to the network entity.

14 . The vehicle communication system according to claim 8 , wherein the control device and one or more communication interfaces are configured to determine a movement speed of the communication device and transmitting information about the movement speed of the communication device to the network entity.

15 . A method for controlling a radiation boundary area of a communication device of a vehicle via a network entity, comprising:

transmitting information about the radiation boundary area, wherein the radiation boundary area is allocated by the network entity, to the communication device;

transmitting a threshold for a maximal radiation energy density outside the radiation boundary area to the communication device;

receiving information about a set radiation pattern of an antenna system of the communication device, wherein the set radiation pattern is based on an approximated antenna system parameter for setting the radiation pattern of the antenna system to the transmitted radiation boundary area;

processing the received information to determine compliance with the radiation boundary area and with the maximal radiation energy density outside the radiation boundary area; and

transmitting updated information to the communication device based on the processing, wherein the updated information comprises information about at least one updated antenna system parameter of the communication device.

16 . The method according to claim 15 , further comprising receiving an antenna system capability of the communication device prior to transmitting information about the radiation boundary area.

17 . The method according to claim 15 , further comprising receiving a quality metric from the communication device, which indicates a match of the radiation pattern with the radiation boundary area.

18 . The method according to claim 15 , wherein processing the received information comprises evaluating an array factor limit corresponding to the radiation boundary area and performing an inverse discrete Fourier transform to determine the at least one updated antenna system parameter.

19 . The method according to claim 15 , wherein the approximated antenna system parameter is based on determined Fourier Coefficients of the communication device for setting the radiation pattern of the antenna system to the radiation boundary area.

20 . The method according to claim 15 , further comprising receiving and processing at least one of (i) information about an environment of the communication device, and/or (ii) a movement speed of the communication device to determine compliance with the radiation boundary area.