Adaptive UL-DL TDD configurations in a heterogneous network

1. An apparatus of a first eNodeB, the apparatus comprising:

memory storing instructions; and

one or more processors configured to, upon execution of the instructions, perform the following:

decode, at the first eNodeB, an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration received from a second eNodeB,

wherein the UL-DL TDD subframe reconfiguration is for the first eNodeB; and

encode, at the first eNodeB, the UL-DL TDD subframe reconfiguration received from the second eNodeB for transmission to a plurality of user equipment (UEs).

2. The apparatus of claim 1 , further comprising a transceiver configured to transmit the UL-DL TDD subframe reconfiguration to the plurality of UEs.

3. The apparatus of claim 1 , wherein the one or more processors are configured to encode the UL-DL TDD subframe reconfiguration for transmission to the plurality of UEs using a physical downlink control channel (PDCCH) and in accordance with a defined downlink control information (DCI) format.

4. The apparatus of claim 1 , wherein the one or more processors are configured to encode the UL-DL TDD subframe reconfiguration for transmission to the plurality of UEs using a physical downlink control channel (PDCCH) and in accordance with downlink control information (DCI) format 1c.

5. The apparatus of claim 1 , wherein the one or more processors are configured to decode the UL-DL TDD subframe reconfiguration received from the second eNodeB via an X2 interface between the first eNodeB and the second eNodeB.

6. The apparatus of claim 1 , wherein the one or more processors are further configured to:

control intra-frequency neighboring cells; and

control inter-frequency neighboring cells.

7. The apparatus of claim 1 , wherein the one or more processors are further configured to decode interference coordination information received from the second eNodeB, wherein the interference coordination information includes the UL-DL TDD subframe reconfiguration for the first eNodeB.

8. The apparatus of claim 1 , wherein the one or more processors are further configured to perform scheduling of data for the plurality of UEs with reduced interference using the UL-DL TDD subframe reconfiguration.

9. The apparatus of claim 1 , wherein the first eNodeB is a neighboring node of the second eNodeB.

10. At least one non-transitory machine readable storage medium having instructions that when executed by at least one processor performs the following:

decoding, at a first eNodeB, an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration received from a second eNodeB, wherein the UL-DL TDD subframe reconfiguration is for the first eNodeB; and

encoding, at the first eNodeB, the UL-DL TDD subframe reconfiguration received from the second eNodeB for transmission to a plurality of user equipment (UEs).

11. The at least one non-transitory machine readable storage medium of claim 10 , further comprising instructions that when executed by the at least one processor performs the following: encoding the UL-DL TDD subframe reconfiguration for transmission to the plurality of UEs using a physical downlink control channel (PDCCH) and in accordance with a defined downlink control information (DCI) format.

12. The at least one non-transitory machine readable storage medium of claim 10 , further comprising instructions that when executed by the at least one processor performs the following: encoding the UL-DL TDD subframe reconfiguration for transmission to the plurality of UEs using a physical downlink control channel (PDCCH) and in accordance with downlink control information (DCI) format 1c.

13. The at least one non-transitory machine readable storage medium of claim 10 , further comprising instructions that when executed by the at least one processor performs the following: decoding the UL-DL TDD subframe reconfiguration received from the second eNodeB via an X2 interface between the first eNodeB and the second eNodeB.

14. The at least one non-transitory machine readable storage medium of claim 10 , further comprising instructions that when executed by the at least one processor performs the following:

controlling intra-frequency neighboring cells; and

controlling inter-frequency neighboring cells.

15. The at least one non-transitory machine readable storage medium of claim 10 , further comprising instructions that when executed by the at least one processor performs the following: decoding interference coordination information received from the second eNodeB, wherein the interference coordination information includes the UL-DL TDD subframe reconfiguration for the first eNodeB.

16. The at least one non-transitory machine readable storage medium of claim 10 , further comprising instructions that when executed by the at least one processor performs the following: performing scheduling of data for the plurality of UEs with reduced interference using the UL-DL TDD subframe reconfiguration.

17. The at least one non-transitory machine readable storage medium of claim 10 , wherein the first eNodeB is a neighboring node of the second eNodeB.

18. An apparatus of a reference eNodeB, the apparatus comprising:

memory storing instructions; and

one or more processors configured to, upon execution of the instructions, perform the following:

determine, at the reference eNodeB, an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration for a neighboring eNodeB; and

encode, at the reference eNodeB, the UL-DL TDD subframe reconfiguration for transmission to the neighboring eNodeB, wherein the neighboring eNodeB configured to perform data scheduling for a plurality of user equipment (UEs) with reduced interference using the UL-DL TDD subframe reconfiguration received from the reference eNodeB.

19. The apparatus of claim 18 , wherein the one or more processors are configured to encode the UL-DL TDD subframe reconfiguration for transmission to the neighboring eNodeB via an X2 interface between the reference eNodeB and the neighboring eNodeB.

20. The apparatus of claim 18 , wherein the one or more processors are configured to determine interference coordination information for the neighboring eNodeB, wherein the interference coordination information includes the UL-DL TDD subframe reconfiguration for the neighboring eNodeB.

21. At least one non-transitory machine readable storage medium having instructions that when executed by at least one processor performs the following:

determining, at a reference eNodeB, an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration for a neighboring eNodeB; and

encoding, at the reference eNodeB, the UL-DL TDD subframe reconfiguration for transmission to the neighboring eNodeB, wherein the neighboring eNodeB configured to perform data scheduling for a plurality of user equipment (UEs) with reduced interference using the UL-DL TDD subframe reconfiguration received from the reference eNodeB.

22. The at least one non-transitory machine readable storage medium of claim 21 , further comprising instructions that when executed by the at least one processor performs the following: encoding the UL-DL TDD subframe reconfiguration for transmission to the second eNodeB via an X2 interface between the first eNodeB and the second eNodeB.

23. The at least one non-transitory machine readable storage medium of claim 21 , further comprising instructions that when executed by the at least one processor performs the following: determining interference coordination information for the second eNodeB, wherein the interference coordination information includes the UL-DL TDD subframe reconfiguration for the second eNodeB.