Radio resource management in a mobile radio communication system
A method operates a radio communication system in which network radio devices use radio resources in order to communicate with subscriber stations. A first network radio device performs direct tuning with a second network radio device using the respectively used radio resources. The first and/or the second network radio device send(s) a request for a decision about radio resources to be used by the first and/or the second network radio device to a device. Subsequent to the request, the first and/or the second network radio device receive(s) information from the device about radio resources to be used by the first and/or the second network radio device. A radio communication system carries out the method.
1. A method for operating a radio communication system, in which network radio devices use radio resources to communicate with respective subscriber stations, comprising:
performing direct tuning at a first network radio device and at a second network radio device such that the first and second network radio devices communicate directly with each other and each selects the radio resources they will be used for communicating with their respective subscriber stations;
transmitting a request from the first network radio device to an intermediate device, the request inquiring about changing the radio resources to be used by the first network radio; and
receiving a decision from the intermediate device in response to the request, the decision being received at the first network radio device, the decision containing information about the radio resources to be used by the first network radio device.
2. The method as claimed in claim 1 , wherein the request is transmitted if there is a conflict with respect to the radio resources used by the first network radio device and the second network radio device within the scope of direct tuning.
3. The method as claimed in claim 2 , wherein the request is transmitted when it is impossible to make a decision about which radio resources will be used by the first network radio device and/or the second network radio device within the scope of the direct tuning.
4. The method as claimed in claim 3 , wherein with direct tuning, the first network radio device uses different radio resources from those used by the second network radio device.
5. The method as claimed in claim 4 , wherein the intermediate device uses the information to carry out re-allocation of radio resources to be used by the second network radio device.
6. The method as claimed in claim 5 , wherein the first network radio device receives, in addition to the response requested, unrequested information from the intermediate device about radio resources to be used by the first network radio device and/or radio resources to be used by the second network radio device.
7. The method as claimed in claim 6 , wherein the radio resources comprise combinations of subbands of a frequency band with time segments.
8. The method as claimed in claim 1 , wherein the request is transmitted in the case of fluctuating decisions about radio resources to be used by the first network radio device and/or the second network radio device within the scope of the direct tuning.
9. The method as claimed in claim 8 , wherein with direct tuning, the first network radio device uses different radio resources from those used by the second network radio device.
10. The method as claimed in claim 9 , wherein the intermediate device uses the information to carry out re-allocation of radio resources to be used by the second network radio device.
11. The method as claimed in claim 10 , wherein the first network radio device receives, in addition to the response requested, unrequested information from the intermediate device about radio resources to be used by the first network radio device and/or radio resources to be used by the second network radio device.
12. The method as claimed in claim 11 , wherein the radio resources comprise combinations of subbands of a frequency band with time segments.
13. The method as claimed in claim 1 , wherein with direct tuning, the first network radio device uses different radio resources from those used by the second network radio device.
14. The method as claimed in claim 1 , wherein the intermediate device uses the information to carry out re-allocation of radio resources to be used by the second network radio device.
15. The method as claimed in claim 1 , wherein the first network radio device receives, in addition to the response requested, unrequested information from the intermediate device about radio resources to be used by the first network radio device and/or radio resources to be used by the second network radio device.
16. The method as claimed in claim 1 , wherein the radio resources comprise combinations of subbands of a frequency band with time segments.
17. A radio communication system, which uses radio resources to communicate with subscriber stations, comprising:
a first network radio device and a second network radio device which carry out direct tuning such that the first and second network radio devices communicate directly with each other and each selects the radio resources that will be used for communicating with its respective subscriber stations, the first network radio device having a transmitter to transmit a request about changing the radio resources to be used by the first network radio device; and
an intermediate device to receive the request, to decide about radio resources to be used by the first network radio device, and to transmit a decision to the first network radio device in response the request, the decision containing information about the radio resources to be used by the first network radio device.