Inter-cell interference coordination for E-PDCCH
View Patent ↗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.
1. A method for communication in a wireless telecommunication system, the method comprising:
processing an indicator;
transmitting, by a first access node, the 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; and
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, wherein the E-PDCCH region is a legacy Physical Downlink Shared Channel (PDSCH) region in which a physical downlink control channel (PDCCH) is transmitted, wherein the indicator includes one power threshold defined for the E-PDCCH.
2. The method of claim 1 , wherein the indicator is carried as a component of a Load Information message.
3. The method of claim 2 , wherein the indicator is carried as an information element in the Load Information message.
4. The method of claim 2 , wherein the indicator is carried as a field in a relative narrowband transmission power (RNTP) information element within the Load Information message.
5. 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.
6. The method of claim 5 , 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.
7. The method of claim 5 , wherein the indicator includes a value which corresponds to one or more individual resource blocks.
8. The method of claim 5 , 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.
9. The method of claim 5 , 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.
10. The method of claim 9 , 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.
11. The method of claim 5 , wherein the indicator includes a value which corresponds to a set of contiguously allocated virtual resource blocks.
12. The method of claim 11 , wherein at least one of the virtual resource blocks is of a localized type.
13. The method of claim 11 , wherein at least one of the virtual resource blocks is of a distributed type.
14. The method of claim 5 , wherein the at least one resource block is constrained to a predefined subset of all available resource blocks.
15. The method of claim 1 , wherein the indicator includes power information about the control channel transmitted by the first access node, 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.
16. A first access node in a wireless telecommunication system, the first access node comprising:
a memory; and
a processor coupled to the memory comprising processor-executable instructions, wherein the processor is 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 and transmits the control channel in an enhanced physical downlink control channel (E-PDCCH) region, wherein the control channel is frequency-division-multiplexed with data transmission, wherein the E-PDCCH region is a legacy Physical Downlink Shared Channel (PDSCH) region in which a physical downlink control channel (PDCCH) is transmitted, wherein the indicator includes one power threshold defined for the E-PDCCH.
17. The first access node of claim 16 , wherein the indicator includes time domain information indicating when the control channel is transmitted by the first access node.
18. The first access node of claim 16 , wherein the indicator includes power information about the control channel transmitted by the first access node.
19. The first access node of claim 18 , wherein the power information is carried by a relative narrowband transmission power (RNTP) information element.
20. The first access node of claim 18 , 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.
21. The first access node of claim 18 , wherein the power information includes a power threshold and a value indicating if transmission power of the control channel is below the power threshold.
22. A user equipment comprising:
a processor; and
a receiver coupled to the processor and 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, wherein the control channel is transmitted in an enhanced physical downlink control channel (E-PDCCH) region, wherein the control channel is frequency-division-multiplexed with data transmission, wherein the E-PDCCH region is a legacy Physical Downlink Shared Channel (PDSCH) region in which a physical downlink control channel (PDCCH) is transmitted, wherein the indicator includes one power threshold that is defined for the E-PDCCH.
23. The user equipment of claim 22 , wherein the configuration of the region includes resource allocation information.
24. The user equipment of claim 22 , wherein the configuration of the region includes power allocation information.
25. The user equipment of claim 22 , wherein power information about the control channel is received in the indicator, 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.