Inter-Cell Interference Coordination for E-PDCCH

• US 20130114517A1
• Filed: 11/04/2011
• Published: 05/09/2013
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Blankenship, Yufei Wu, Gao, Shiwei, Xu, Hua
• Granted Patent: US 9,473,279 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 92/20 between access points

Abstract

A method is provided for communication in a wireless telecommunication system. The method comprises transmitting, by a first access node, an indicator to a second access node over an interface between the first access node and the second access node, wherein the indicator provides information on a transmission of a control channel by the first access node.

Claims

1. A method for communication in a wireless telecommunication system, the method comprising:

transmitting, by a first access node, an indicator to a second access node over an interface between the first access node and the second access node, wherein the indicator provides information on a transmission of a control channel by the first access node.

2. The method of claim 1, further comprising transmitting, by the first access node, the control channel in an enhanced physical downlink control channel (E-PDCCH) region, wherein the control channel is frequency-division-multiplexed with data transmission.

3. The method of claim 2, wherein the indicator provides information on the E-PDCCH region.

4. The method of claim 1, wherein the indicator is carried as a component of a Load Information message.

5. The method claim 4, wherein the indicator is carried as an information element in the Load Information message.

6. The method claim 4, wherein the indicator is carried as a field in a relative narrowband transmission power (RNTP) information element within the Load Information message.

7. The method of claim 1, wherein the indicator indicates at least one resource block that is to be used by the first access node for transmission of the control channel.

8. The method of claim 7, wherein the indicator further indicates at least one of:

a location of the at least one resource block;

or

a transmission power of the at least one resource block.

9. The method of claim 7, wherein the indicator includes a value which corresponds to one or more individual resource blocks.

10. The method of claim 7, wherein the indicator includes a value which corresponds to one or more resource block groups, where a resource block group contains one or more resource blocks.

11. The method of claim 7, wherein the indicator includes a value which corresponds to one or more resource block groups and to one or more individual resource blocks within a resource block group.

12. The method of claim 11, wherein the indicator includes a first field to indicate the one or more resource block groups, a second field to indicate whether a shift of the resources blocks is used, and a third field containing a bitmap where each bit in the bitmap is associated with a virtual resource block in the one or more resource block groups.

13. The method of claim 7, wherein the indicator includes a value which corresponds to a set of contiguously allocated virtual resource blocks.

14. The method of claim 13, wherein at least one of the virtual resource blocks is of a localized type.

15. The method of claim 13, wherein at least one of the virtual resource blocks is of a distributed type.

16. The method of claim 7, wherein the at least one resource block is constrained to a predefined subset of all available resource blocks.

17. A first access node in a wireless telecommunication system, the first access node comprising:

a processor configured such that the first access node transmits over an interface between the first access node and a second access node an indicator that provides information on a transmission of a control channel.

18. The first access node of claim 17, wherein the indicator includes time domain information indicating when the control channel is transmitted by the first access node.

19. The first access node of claim 17, wherein the indicator includes power information about the control channel transmitted by the first access node.

20. The first access node of claim 19, wherein the power information is carried by a RNTP information element.

21. The first access node of claim 19, wherein the power information indicates a relationship between a power level of the control channel and a power level of a plurality of reference symbols.

22. The first access node of claim 19, wherein the power information includes a power threshold and a value indicating if transmission power of the control channel is below the power threshold.

23. A user equipment comprising:

a receiving component configured to receive a control channel that was transmitted in a resource block that is frequency-division-multiplexed with a data channel, wherein the resource block is located in a region whose configuration is transmitted from an access node serving the user equipment to another access node.

24. The user equipment of claim 23, wherein the configuration of the region includes resource allocation information.

25. The user equipment of claim 23, wherein the configuration of the region includes power allocation information.