System and method for wireless communications measurements and CSI feedback

1. A method implemented by a user equipment (UE), the method comprising:

receiving, from a network, a first signaling indicating one or more reference signal (RS) resource configurations;

receiving, from the network, a second signaling indicating one or more interference measurement (IM) resource configurations; and

receiving, from the network, a third signaling indicating a channel state information (CSI) report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

establishing an RS based measurement according to the subset of the one or more RS resource configurations;

establishing an IM according to the subset of the one or more IM resource configurations;

generating a CSI report in accordance with the CSI report configuration using the RS based measurement and the IM; and

sending the CSI report to the network.

2. The method of claim 1 , wherein establishing an IM according to the subset of the one or more IM resource configurations comprises establishing the IM based on an IM resource within a subframe subset, wherein the IM resource is configured by the subset of the one or more IM resource configurations, and wherein the subframe subset is configured by the network for the CSI report configuration.

3. The method of claim 1 , wherein the third signaling indicates for the CSI report configuration a subset of RS resource configuration indexes for specifying the subset of the one or more RS resource configurations, and a subset of IM resource indexes for specifying the subset of the one or more IM resources.

4. The method of claim 1 , wherein the one or more RS resource configurations and the one or more IM resource configurations indicate one or more physical resource block (PRBs) allocated for one or more antenna ports of the UE.

5. The method of claim 1 , wherein the third signaling indicates a plurality of CSI report configurations, and wherein each of the CSI report configurations indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations.

6. A method implemented by a user equipment (UE), the method comprising:

receiving, from a network, a first signaling indicating one or more reference signal (RS) resource configurations;

receiving, from the network, a second signaling indicating one or more interference measurement (IM) resource configurations;

receiving, from the network, a third signaling indicating a channel state information (CSI) report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

establish an IM according to the subset of the one or more IM resource configurations;

generate a CSI report using the IM without using the subset of the one or more RS resource configurations; and

send the CSI report to the network.

7. A user equipment (UE) configured for wireless communications measurements and Channel State Information (CSI) feedback, the UE comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:

receive from a network a first signaling indicating one or more reference signal (RS) resource configurations;

receive from the network a second signaling indicating one or more interference measurement (IM) resource configurations;

receive from the network a third signaling indicating a CSI report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

establish an RS based measurement according to the subset of the one or more RS resource configurations;

establish an IM according to the subset of the one or more IM resource configurations;

generate a CSI report in accordance with the CSI report configuration using the RS based measurement and the IM; and

send the CSI report to the network.

8. The UE of claim 7 , wherein the CSI report is a channel quantity indicator (CQI) report that supports a cooperative multi-point (CoMP) transmission.

9. The UE of claim 7 , wherein the CSI report is a channel quantity indicator (CQI) report that supports a resource restricted measurement scheme.

10. The UE of claim 7 , wherein the CSI report includes a precoding Matrix indicator (PMI).

11. The UE of claim 10 , wherein the CSI report further includes a rank indicator (RI) of the PMI.

12. The UE of claim 7 , wherein the instructions to establish an RS based measurement include instructions to:

perform the RS based measurement in accordance with a reference resource for the RS based measurement indicated in a subframe at least a number of subframes earlier than a network configured reporting subframe, wherein the reference resource for the RS based measurement comprises resource elements (REs) in a subframe and in the subset of the one or more RS resource configurations.

13. The UE of claim 7 , wherein the one or more RS resource configurations are for non-zero-power CSI-RS resources for signal channel measurements, and wherein the one or more IM resource configurations are for zero-power CSI-RS IM resources for interference measurements.

14. The UE of claim 7 , wherein the programming includes further instructions to:

receive from the network a fourth signaling indicating one or more second RS resource configurations for one or more Radio Link Monitoring (RLM) or Radio Resource Management (RRM) measurements;

establish a RLM or RRM measurement according to a subset of the one or more second RS resource configurations; and

send a feedback of the RLM or RRM measurement to the network.

15. A user equipment (UE) configured for wireless communications measurements and Channel State Information (CSI) feedback, the UE comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:

receive from a network a first signaling indicating one or more reference signal (RS) resource configurations;

receive from the network a second signaling indicating one or more interference measurement (IM) resource configurations;

receive from the network a third signaling indicating a CSI report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

establish an IM according to the subset of the one or more IM resource configurations;

generate a CSI report using the IM without using the subset of the one or more RS resource configurations; and

send the CSI report to the network.

16. The UE of claim 15 , wherein the instructions to establish the IM include instructions to establish the IM based on a reference resource for the IM in a subframe at least a number of subframes earlier than a network configured reporting subframe, wherein the reference resource for the IM comprises resource elements (REs) in a subframe and in the subset of the one or more IM resource configurations.

17. A user equipment (UE) configured for wireless communications measurements and Channel State Information (CSI) feedback, the UE comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:

receive, from a network, a first signaling indicating one or more reference signal (RS) resource configurations;

receive, from the network, a second signaling indicating one or more interference measurement (IM) resource configurations;

receive, from the network, a third signaling indicating a CSI report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

generate a cooperative multi-point (CoMP) feedback that supports a resource-restricted measurements based scheme for achieving Enhanced Inter-Cell Interference Control (eICIC) without using the subset of the one or more RS resource configurations and the subset of the one or more IM resource configurations; and

send the CoMP feedback to the network.

18. A method implemented by a network component for configuring a user equipment (UE) for wireless communications measurements and Channel State Information (CSI) feedback, the method comprising:

transmitting to the UE a first signaling indicating one or more reference signal (RS) resource configurations;

transmitting to the UE a second signaling indicating one or more interference measurement (IM) resource configurations;

transmitting to the UE a third signaling indicating a CSI report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

transmitting, from the network component to a second network component, information about a first IM resource configuration and a second IM resource configuration, wherein the first IM resource configuration is associated with a first transmission activity by the network component and the second IM resource configuration is associated with a second transmission activity by the network component;

performing the first transmission activity on resource elements (REs) in accordance with the first IM resource configuration; and

performing the second transmission activity on the REs in accordance with the second IM resource configuration.

19. The method of claim 18 , further comprising:

transmitting from the network component to the UE information for instructing the UE to perform rate matching on the first IM resource configuration, the second IM resource configuration, or both the first IM resource configuration and the second IM resource configuration.

20. The method of claim 18 , wherein performing the first transmission activity comprises performing at least one of muting, beam blanking, reduced power transmission, transmission at a normal power level of the network component.

21. The method of claim 18 , further comprising receiving from the UE a CSI report generated at the UE in accordance with the CSI report configuration using the subset of the one or more RS resource configurations and the subset of the one or more IM resource configurations.

22. The method of claim 18 , wherein the third signaling indicates one or more indexes for linking the subset of the one or more RS resources and one or more indexes for linking the subset of the one or more IM resource configurations to the CSI report.

23. The method of claim 18 , wherein the third signaling indicates a bitmap for linking the subset of the one or more RS resources and a bitmap for linking the subset of the one or more IM resource configurations to the CSI report.

24. The method of claim 18 , wherein the first signaling indicates a plurality of RS resource configurations and the second signaling indicates a plurality of IM resource configurations that support joint transmission (JT).

25. The method of claim 18 further comprising:

transmitting to the UE a fourth signaling that indicates one or more second RS resource configurations for one or more Radio Link Monitoring (RLM) or Radio Resource Management (RRM) measurements; and

receiving from the UE a feedback of a RLM or RRM measurement established according to a subset of the one or more second RS resource configurations, wherein the first signaling, the second signaling, the third signaling, and the fourth signaling are transmitted jointly as a combined signal to the UE.

26. A network component for configuring a user equipment (UE) for wireless communications measurements and Channel State Information (CSI) feedback, the network component comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:

transmit to the UE a first signaling indicating one or more reference signal (RS) resource configurations;

transmit to the UE a second signaling indicating one or more interference measurement (IM) resource configurations;

transmit to the UE a third signaling indicating a CSI report configuration, wherein the CSI report configuration indicates a subset of the one or more RS resource configurations and a subset of the one or more IM resource configurations;

transmit to the UE a fourth signaling that indicates one or more second RS resource configurations for one or more Radio Link Monitoring (RLM) or Radio Resource Management (RRM) measurements; and

receive from the UE a feedback of a RLM or RRM measurement established according to a subset of the one or more second RS resource configurations.

27. The network component of claim 26 , wherein the programming includes further instructions to receive from the UE a CSI report generated at the UE in accordance with the CSI report configuration using the subset of the one or more RS resource configurations and the subset of the one or more IM resource configurations.

28. The network component of claim 27 , wherein the CSI report is a channel quantity indicator (CQI) report that supports a cooperative multi-point (CoMP) transmission.

29. A method comprising:

deriving, by a user equipment (UE) operating in transmission mode 10, channel measurements for computing a channel quality indicator (CQI) value based on only a non-zero power channel state information reference signal (CSI-RS) within a configured CSI-RS resource associated with a channel state information (CSI) process; and

deriving, by the UE operating in the transmission mode 10, interference measurements for computing the CQI value corresponding to the CSI process based on only the zero power CSI-RS within a configured channel state information interference measurement (CSI-IM) resource associated with the CSI process, wherein if the UE in transmission mode 10 is configured by higher layers for specific CSI subframe sets for the CSI process, then the configured CSI-IM resource within the subframe subset belonging to the CSI reference resource is used to derive the interference measurement.