METHOD AND APPARATUS FOR RECEIVING REFERENCE SIGNAL

• US 20160330004A1
• Filed: 05/09/2016
• Published: 11/10/2016
• Est. Priority Date: 05/07/2015
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Cheulsoon, PARK, Gi Yoon, SHIN, Wooram, MOON, Sung-Hyun, KO, Young Jo, NAM, Junyoung
• Granted Patent: US 10,057,027 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

A method for receiving a reference signal including receiving a configuration about a subband from the base station through a higher layer signaling, wherein the RS is allocated to the subband; and receiving a subframe including a reference signal resource allocated by a unit of the subband, and an apparatus are provided.

Claims

1. A method for receiving a reference signal (RS) from a base station by a terminal, comprising:

receiving a configuration about a subband from the base station through a higher layer signaling, wherein the RS is allocated to the subband; and

receiving a subframe including a reference signal resource allocated by a unit of the subband,

wherein the RS is one of a user equipment-reference signal (UE-RS) or a channel state information-reference signal (CSI-RS).

2. The method of claim 1, wherein the subband includes at least one zero power (ZP) CSI-RS resource and at least one non-zero power (NZP) CSI-RS resource when the RS is the CSI-RS.

3. The method of claim 2, further comprising:

receiving information about the subband through the higher layer signaling,

wherein the information about the subband is an index of the subband to which the NZP CSI-RS resource is allocated.

4. The method of claim 2, further comprising:

receiving information about the subband through a downlink control information (DCI),

wherein the information about the subband is an index of the subband to which the NZP CSI-RS resource is allocated.

5. The method of claim 2, further comprising:

receiving an NZP CSI-RS on the NZP CSI-RS resource;

generating a CSI report based on the NZP CSI-RS; and

transmitting the CSI report to the base station using an uplink resource indicated by an uplink grant (UL grant).

6. The method of claim 5, wherein the UL grant includes a CSI trigger for the CSI report.

7. The method of claim 2, further comprising:

receiving a downlink grant (DL grant) including a physical downlink shared channel (PDSCH) scheduling information for a rate matching of the PDSCH; and

performing the rate matching in consideration of a location of a resource element (RE) used by the NZP CSI-RS.

8. The method of claim 2, further comprising:

performing a rate matching for an enhanced physical downlink control channel (EPDCCH) based on the subframe when the base station performs a rate matching on a resource block in which the EPDCCH is transmitted.

9. A method for rate matching for a physical downlink shared channel (PDSCH) by a terminal, comprising:

receiving a configuration about a PDSCH resource element (RE) mapping and quasi-co-location indicator (PQI) field at which a location of a reference signal (RS) is considered; and

performing the rate matching based on the PQI field.

10. The method of claim 9, wherein the performing of the rate matching comprises performing the rate matching in the same manner for an entire resource block (RB) to which the PDSCH is allocated.

11. The method of claim 9, further comprising:

receiving a downlink grant (DL grant) including a scheduling information for the PDSCH,

wherein the performing of the rate matching comprises performing the rate matching based on the scheduling information and the PQI field.

12. A terminal comprising:

at least one processor;

a memory; and

a radio frequency unit,

wherein the at least one processor executes at least one program stored in the memory to perform,

receiving a configuration about a subband from a base station through a higher layer signaling, wherein a reference signal (RS) is allocated to the subband; and

receiving a subframe including a reference signal resource allocated by a unit of the subband unit,

wherein the RS is one of a user equipment-reference signal (UE-RS) or a channel state information-reference signal (CSI-RS).

13. The terminal of claim 12, wherein the subband includes at least one zero power (ZP) CSI-RS resource and at least one non-zero power (NZP) CSI-RS resource when the RS is the CSI-RS.

14. The terminal of claim 13, wherein

at least one processor further performs receiving information about the subband through the higher layer signaling,

wherein the information about the subband is an index of the subband to which the NZP CSI-RS resource is allocated.

15. The terminal of claim 13, wherein

at least one processor further performs receiving information about the subband through a downlink control information (DCI),

wherein the information about the subband is an index of the subband to which the NZP CSI-RS resource is allocated.

16. The terminal of claim 13, wherein

at least one processor further performs:

receiving an NZP CSI-RS on the NZP CSI-RS resource;

generating a CSI report based on the NZP CSI-RS; and

transmitting the CSI report to the base station using an uplink resource indicated by an uplink grant (UL grant).

17. The terminal of claim 16, wherein the UL grant includes a CSI trigger for the CSI report.

18. The terminal of claim 13, wherein

at least one processor further performs:

receiving a downlink grant (DL grant) including a physical downlink shared channel (PDSCH) scheduling information for a rate matching of the PDSCH; and

performing the rate matching in consideration of a location of resource element (RE) used by the NZP CSI-RS.

19. The terminal of claim 13, wherein

at least one processor further performs performing a rate matching for an enhanced physical downlink control channel (EPDCCH) based on the subframe when the base station performs a rate matching on a resource block in which the EPDCCH is transmitted.