Communication terminal and method for using a shared radio communication component

1. A communication terminal comprising:

a first subscriber identity module;

a second subscriber identity module;

a first plurality of radio communication components assigned to the first subscriber identity module;

a second plurality of radio communication components assigned to the second subscriber identity module; wherein inter-subscriber identity module communication between the first subscriber module and the second subscriber module only occurs for a lowest layer;

a shared radio communication component assigned to both the first subscriber identity module and the second subscriber identity module;

a priority determiner circuit configured to:

determine, for each radio communication component of the first plurality of radio communication components, a priority of a function to be carried by the radio communication component using the shared radio communication component and determine an accumulated priority for the first subscriber identity module based on the priorities determined for the first plurality of radio communication components;

determine, for each radio communication component of the second plurality of radio communication components, a priority of a function to be carried by the radio communication component using the shared radio communication component and determine an accumulated priority for the second subscriber identity module based on the priorities determined for the second plurality of radio communication components; and

a controller circuit configured to give access to the shared radio communication component based on the accumulated priorities.

2. The communication terminal of claim 1 , wherein the functions to be carried out by the first plurality of radio communication components are part of a task to be carried out for the first subscriber identity module.

3. The communication terminal of claim 2 , wherein the task is a task to be carried out for a camping of the communication terminal on a radio cell by means of the first subscriber identity module or a transmission of useful data of the communication terminal by means of the first subscriber identity module.

4. The communication terminal of claim 2 , wherein one of radio communication components of the first plurality of radio communication components is configured to trigger the task to be carried out for the first subscriber identity module.

5. The communication terminal of claim 1 , wherein the functions to be carried out by the second plurality of radio communication components are part of a task to be carried out for the second subscriber identity module.

6. The communication terminal of claim 5 , wherein the task is a task to be carried out for a camping of the communication terminal on a radio cell by means of the second subscriber identity module or a transmission of useful data of the communication terminal by means of the second subscriber identity module.

7. The communication terminal of claim 5 , wherein one of radio communication components of the second plurality of radio communication components is configured to trigger the task to be carried out for the second subscriber identity module.

8. The communication terminal of claim 1 , wherein the first subscriber identity module is configured to perform radio communication tasks using a first protocol stack instance at least partially implemented by means of the first plurality of radio communication components and wherein the second subscriber identity module is configured to perform radio communication tasks using a second protocol stack instance at least partially implemented by means of the second plurality of radio communication components.

9. The communication terminal of claim 8 , wherein the first plurality of radio communication components and the second plurality of radio communication components are at least partially implemented by means of a processor.

10. The communication terminal of claim 1 , wherein the first plurality of radio communication components at least partially implement a modem for the first subscriber identity module and the second plurality of radio communication components at least partially implement a modem for the second subscriber identity module.

11. The communication terminal of claim 1 , wherein the shared component is part of a first communication layer and at least some of first plurality of radio communication components and at least some of the second plurality of radio communication components are part of at least one second communication layer above the first communication layer.

12. The communication terminal of claim 11 , wherein the first communication layer is a physical layer and wherein the at least one second communication layer includes at least one of a data link layer and a network layer; and wherein the lowest layer is the physical layer.

13. The communication terminal of claim 1 , wherein the shared component is part of a first communication layer and the first plurality of radio communication components and the second plurality of radio communication components are part of the first communication layer or at least one second communication layer above the first communication layer.

14. The communication terminal of claim 1 , wherein the shared radio communication component being assigned to both the first subscriber identity module and the second subscriber identity module comprises the shared radio communication component being required for a radio communication connection of the first subscriber identity module and being required for a radio communication connection of the second subscriber identity module.

15. The communication terminal of claim 14 , wherein the radio communication connection of the first subscriber identity module and the radio communication connection of the second subscriber identity module are radio communication connections to a radio communication network.

16. The communication terminal of claim 1 , wherein the shared component is a physical layer component.

17. The communication terminal of claim 1 , wherein the shared component is a hardware component of the communication terminal.

18. The communication terminal of claim 1 , wherein the shared component is a transceiver of the communication terminal.

19. A method for using a shared radio communication component comprising:

determining, for each radio communication component of a first plurality of radio communication components assigned to a first subscriber identity module a priority of a function to be carried by the radio communication component using the shared radio communication component and determine an accumulated priority for the first subscriber identity module based on the priorities determined for the first plurality of radio communication components;

determining, for each radio communication component of a second plurality of radio communication components assigned to a second subscriber identity module, a priority of a function to be carried by the radio communication component using the shared radio communication component and determine an accumulated priority for the second subscriber identity module based on the priorities determined for the second plurality of radio communication components; wherein inter-subscriber identity module communication between the first subscriber module and the second subscriber module only occurs for a lowest layer; and

giving access to a shared radio communication component assigned to both the first subscriber identity module and the second subscriber identity module based on the accumulated priorities.

20. A non-transitory computer readable medium having recorded instructions thereon which, when executed by a processor, make the processor perform a method for using a shared radio communication component according to claim 19 .