Methods and apparatuses for determining transmission power and providing information for power determination

1. A method for determining transmission power for a base station, comprising:

receiving information on link resource configuration of at least one interfered base station; and

determining the transmission power for the base station, based on link resource configuration for the base station and the information on link resource configuration of the at least one interfered base station,

wherein the link resource configuration comprises a plurality of subframes, each of the subframes used for downlink, uplink or special subframe, and

wherein the information on the link resource configuration is a bitmap that represents the link resource configuration.

2. The method according to claim 1 , wherein the information on link resource configuration is related to at least part of the subframes in a TDD radio frame, which is used for uplink transmission or downlink transmission in different link resource configurations.

3. The method according to claim 1 , wherein the information on link resource configuration further comprises uplink resource utilization condition of the at least interfered base station.

4. The method according to claim 1 , wherein the information on link resource configuration is indicated by the bit map representing the link resource configuration of the at least one interfered base station.

5. The method according to claim 1 , wherein the determining the transmission power for the base station comprises

determining, from the information on link resource configuration, an adjustment indicator reflecting a possibly caused interference condition under the link resource configuration; and

setting the transmission power for the base station based on the adjustment indicator.

6. The method according to claim 5 , wherein the adjustment indicator is related to the number of respective subframes in link resource configuration of the at least one interfered base station which are used by the at least one interfered base station for uplink transmission but, in the link resource configuration for the base station, are used for downlink transmission.

7. The method according to claim 5 , wherein the setting the transmission power for the base station based on the adjustment indicator comprises

setting the transmission power as a value corresponding to a range to which the adjustment indicator belongs.

8. The method according to claim 1 , wherein the determining the transmission power for the base station is re-performed in response to reception of a power redetermination request comprising information on new uplink resource utilization condition of the at least interfered base station.

9. A method for providing, at a base station, information for transmission power determination, comprising

obtaining information on link resource configuration of the base station; and

transmitting the information on link resource configuration to at least one interfering base station for using in transmission power determination,

wherein the link resource configuration comprises a plurality of subframes, each of the subframes used for downlink, uplink or special subframe, and

wherein the information on the link resource configuration is a bitmap that represents the link resource configuration.

10. The method according to claim 9 , wherein the information on link resource configuration is related to at least part of the subframes in a TDD radio frame which is used for uplink transmission or downlink transmission in different link resource configurations.

11. The method according to claim 9 , wherein the information on link resource configuration further comprises link resource utilization condition of the base station.

12. The method according to claim 9 , further comprising:

transmitting to the interfering base station a power redetermination request comprising information on new uplink resource utilization condition of the base station.

13. An apparatus for determining transmission power for a base station, comprising:

a configuration information receiving module configured to receive information on link resource configuration of at least one interfered base station; and

a transmission power determination model configured to determine the transmission power for the base station, based on link resource configuration for the base station and the information on link resource configuration of the at least one interfered base station,

wherein the link resource configuration comprises a plurality of subframes, each of the subframes used for downlink, uplink or special subframe, and

wherein the information on the link resource configuration is a bitmap that represents the link resource configuration.

14. The apparatus according to claim 13 , wherein the information on link resource configuration is related to at least part of the subframes in a TDD radio frame which can be used for uplink transmission or downlink transmission in different link resource configurations.

15. The apparatus according to claim 13 , wherein the information on link resource configuration further comprises uplink resource utilization condition of the at least interfered base station.

16. The apparatus according to claim 13 , wherein the information on link resource configuration is indicated by the bit map representing the link resource configuration of the at least one interfered base station.

17. The apparatus according to claim 13 , wherein the transmission power determination model further comprises:

an adjustment indicator determination module configured to determine, from the information on link resource configuration, an adjustment indicator reflecting a possibly caused interference condition under the link resource configuration; and

a transmission power setting module configured to set the transmission power for the base station based on the adjustment indicator.

18. The apparatus according to claim 17 , wherein the adjustment indicator is related to the number of respective subframes in link resource configuration of the at least one interfered base station which are used by the at least one interfered base station for uplink transmission but, in the link resource configuration for the base station, are used for downlink transmission.

19. The apparatus according to claim 17 , wherein the transmission power setting module is further configured to

set the transmission power as a value corresponding to a range to which the adjustment indicator belongs.

20. The apparatus according to claim 13 , wherein the transmission power determination mode is configured to re-determine the transmission power in response to reception of a power redetermination request comprising information on new uplink resource utilization condition of the at least interfered base station.

21. An apparatus for providing, at a base station, information for transmission power determination, comprising

a configuration information obtainment module configured to obtain information on link resource configuration of the base station; and

a configuration information transmission module configured to transmit the information on link resource configuration to at least one interfering base station for using in transmission power determination,

wherein the link resource configuration comprises a plurality of subframes, each of the subframes used for downlink, uplink or special subframe, and

wherein the information on the link resource configuration is a bitmap that represents the link resource configuration.

22. The apparatus according to claim 21 , wherein the information on link resource configuration is related to at least part of the subframes in a TDD radio frame, which can be used for uplink transmission or downlink transmission in different link resource configurations.

23. The apparatus according to claim 21 , wherein the information on link resource configuration further comprises link resource utilization condition of the base station.

24. The apparatus according to claim 21 , further comprising:

a redetermination request transmission module configured to transmit to the interfering base station a power redetermination request comprising information on new uplink resource utilization condition of the base station.