Method of enhanced interference measurements for channel state information (CSI) feedback
First Claim
1. A User Equipment (UE) comprising:
- a processor configured to process signals associated with communications;
a transceiver configured to transmit and receive signals associated with the communications;
wherein the processor is further configured to;
receive CSI-IM resources from a serving cell from the transceiver;
process the received CSI-IM resources to perform interference measurements on cells including the said serving cell;
process a zero-power (ZP) CSI-RS according to the CSI-IM resources received at the transceiver from the said serving cell;
perform the interference measurements associated with the cells including the said serving cell based on the CSI-IM resources and ZP CSI-RS received at the transceiver from the said serving cell; and
provide channel state information feedback to the said serving cell based on the interference measurements, wherein the processor is further configured to process a CSI-IM resources hopping pattern received at the transceiver from the said serving cell for varying a position of the CSI-IM resources in subframes and to receive CSI-IM and the ZP CSI-RS from the said serving cell in positions in subframes according to the received CSI-IM resources hopping pattern.
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Accused Products
Abstract
Embodiments of providing enhanced interference measurements for CSI feedback are generally described herein. In some embodiments, CSI-IM resources are used by UE to perform interference measurements. The serving cell determines a hopping pattern for varying a position of the determined CSI-IM resources in subframes transmitted to the served UE. The determined CSI-IM resources and the determined CSI-IM resources hopping pattern are transmitted to the served UE. The serving node transmits a zero-power (ZP) CSI-RS. The serving node receives an interference measurement from the served UE based on CSI-IM and ZP CSI-RS provided to the served UE from the serving cell. Collisions between the CSI-IM of the serving node and CSI-IM of the non-serving nodes are minimized by the determined CSI-IM resources hopping pattern.
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Citations
24 Claims
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1. A User Equipment (UE) comprising:
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a processor configured to process signals associated with communications; a transceiver configured to transmit and receive signals associated with the communications; wherein the processor is further configured to; receive CSI-IM resources from a serving cell from the transceiver; process the received CSI-IM resources to perform interference measurements on cells including the said serving cell; process a zero-power (ZP) CSI-RS according to the CSI-IM resources received at the transceiver from the said serving cell; perform the interference measurements associated with the cells including the said serving cell based on the CSI-IM resources and ZP CSI-RS received at the transceiver from the said serving cell; and provide channel state information feedback to the said serving cell based on the interference measurements, wherein the processor is further configured to process a CSI-IM resources hopping pattern received at the transceiver from the said serving cell for varying a position of the CSI-IM resources in subframes and to receive CSI-IM and the ZP CSI-RS from the said serving cell in positions in subframes according to the received CSI-IM resources hopping pattern. - View Dependent Claims (2, 3, 4, 5, 6)
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7. At least one non-transitory machine readable medium comprising instructions that, when executed by the machine, cause the machine to perform operations comprising:
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receiving CSI-IM resources from a serving cell; processing the received CSI-IM resources to perform interference measurements on cells including the serving cell; processing a zero-power (ZP) CSI-RS according to the CSI-IM resources received from the serving cell; performing the interference measurements associated with the cells including the serving cell based on the CSI-IM resources and ZP CSI-RS received from the serving cell; providing channel state information feedback to the serving cell based on the interference measurements; processing a CSI-IM resources hopping pattern received from the serving cell for varying a position of the CSI-IM resources in subframes; and receiving CSI-IM and the ZP CSI-RS from the serving cell in positions in subframes according to the received CSI-IM resources hopping pattern. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method to be implemented by a User Equipment (UE), the method comprising:
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receiving CSI-IM resources from a serving cell; processing the received CSI-IM resources to perform interference measurements on cells including the serving cell; processing a zero-power (ZP) CSI-RS according to the CSI-IM resources received from the serving cell; performing the interference measurements associated with the cells including the serving cell based on the CSI-IM resources and ZP CSI-RS received from the serving cell; providing channel state information feedback to the serving cell based on the interference measurements; processing a CSI-IM resources hopping pattern received from the serving cell for varying a position of the CSI-IM resources in subframes; and receiving CSI-IM and the ZP CSI-RS from the serving cell in positions in subframes according to the received CSI-IM resources hopping pattern. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A serving cell, comprising:
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memory for storing data thereon; a processor, coupled to the memory, for processing signals associated with communications including data from the memory; a transceiver, coupled to the processor, arranged to transmit and receive signals associated with communications; and at least one antenna for radiating signals for transmission and intercepts signals for reception; wherein the processor is further arranged to; determine CSI-IM resources for use by a served user equipment (UE) served by the serving cell to perform interference measurements; provide the determined CSI-IM resources to the transceiver for transmission to the served UE; provide, to the transceiver for transmission to the served UE, a zero-power (ZP) CSI-RS according to the determined CSI-IM resources to remove serving cell interference; and process a received interference measurement from the served UE based on CSI-IM received by the served UE and the ZP CSI-RS provided to the served UE from the serving cell. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification