EPDCCH resource and quasi-co-location management in LTE

• US 10,098,109 B2
• Filed: 06/23/2017
• Issued: 10/09/2018
• Est. Priority Date: 11/02/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chen, Wanshi, Geirhofer, Stefan, Gaal, Peter, Xu, Hao, Luo, Tao
• Primary Examiner(s): HUYNH, KHOA B
• Application Number:
  US15/631,651
• Publication Number:
  US 20170311299A1
• Time in Patent Office: 473 Days
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/0067 Rate matching H04L1/0013 and H04L1/08 take precedence
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided. In an aspect, the apparatus may configure at least a first resource set and a second resource set for a control channel. The first and second resource sets may be configured with a common reference signal configuration. The apparatus also configures first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set. Then, the apparatus transmits the first rate-matching parameters and the second rate-matching parameters and transmits the control channel using the first resource set and the second resource set.

Claims

1. A method of wireless communication at a user equipment, comprising:

receiving a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common channel state information reference signals (CSI-RS) configuration;

receiving resource set dependent rate matching parameters for the EPDCCH having the common CSI-RS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

receiving the EPDCCH based on the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CSI-RS, and

wherein the second rate-matching parameters correspond to a second CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CSI-RS.

2. The method of claim 1, wherein the first and second resource sets are further configured using a common reference signals (CRS) configuration.

3. The method of claim 1, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

4. A method of wireless communication at a user equipment, comprising:

receiving a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common cell-specific reference signal (CRS) configuration;

receiving resource set dependent rate matching parameters for the EPDCCH having the common CRS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

receiving the EPDCCH using the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CRS comprised in the common CRS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CRS, and

wherein the second rate-matching parameters correspond to a second CRS comprised in the common CRS configuration , wherein EPDCCH REs in the second resource set are rate-matched around the second CRS.

5. The method of claim 4, wherein the first and second resource sets are further configured using a common CSI-RS configuration.

6. The method of claim 4, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

7. An apparatus for wireless communication at a user equipment, comprising:

means for receiving a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common channel state information reference signals (CSI-RS) configuration;

means for receiving resource set dependent rate matching parameters for the EPDCCH having the common CSI-RS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

means for receiving the EPDCCH based on the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CSI-RS, and

wherein the second rate-matching parameters correspond to a second CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CSI-RS.

8. The apparatus of claim 7, wherein the first and second resource sets are further configured using a common reference signals (CRS) configuration.

9. The apparatus of claim 7, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

10. An apparatus of wireless communication at a user equipment, comprising:

means for receiving a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common cell-specific reference signal (CRS) configuration;

means for receiving resource set dependent rate matching parameters for the EPDCCH having the common CRS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

means for receiving the EPDCCH using the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CRS comprised in the common CRS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CRS, and

wherein the second rate-matching parameters correspond to a second CRS comprised in the common CRS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CRS.

11. The apparatus of claim 10, wherein the first and second resource sets are further configured using a common CSI-RS configuration.

12. The apparatus of claim 10, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

13. An apparatus for wireless communication at a user equipment, comprising:

a memory; and

at least one processor coupled to the memory and configured to;

receive a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common channel state information reference signals (CSI-RS) configuration;

receive resource set dependent rate matching parameters for the EPDCCH having the common CSI-RS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

receive the EPDCCH based on the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CSI-RS, and

wherein the second rate-matching parameters correspond to a second CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CSI-RS.

14. The apparatus of claim 13, wherein the first and second resource sets are further configured using a common reference signals (CRS) configuration.

15. The apparatus of claim 13, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

16. An apparatus for wireless communication at a user equipment, comprising:

a memory; and

at least one processor coupled to the memory and configured to;

receive a configuration of at least a first resource set and a second resource set an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common cell-specific reference signal (CRS) configuration;

receive resource set dependent rate matching parameters for the EPDCCH having the common CRS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

receive the EPDCCH using the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CRS comprised in the common CRS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CRS, and

wherein the second rate-matching parameters correspond to a second CRS comprised in the common CRS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CRS.

17. The apparatus of claim 16, wherein the first and second resource sets are further configured using a common CSI-RS configuration.

18. The apparatus of claim 16, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

19. A non-transitory computer-readable medium storing computer executable code for wireless communication at a user equipment, comprising code to:

receive a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common channel state information reference signals (CSI-RS) configuration;

receive resource set dependent rate matching parameters for the EPDCCH having the common CSI-RS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

receive the EPDCCH based on the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CSI-RS, and

wherein the second rate-matching parameters correspond to a second CSI-RS comprised in the common CSI-RS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CSI-RS.

20. The non-transitory computer-readable medium of claim 19, wherein the first and second resource sets are further configured using a common reference signals (CRS) configuration.

21. The non-transitory computer-readable medium of claim 19, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.

22. A non-transitory computer-readable medium storing computer executable code for wireless communication at a user equipment, comprising code to:

receive a configuration of at least a first resource set and a second resource set for an enhanced physical downlink control channel (EPDCCH), wherein the first and second resource sets are configured with a common cell-specific reference signal (CRS) configuration;

receive resource set dependent rate matching parameters for the EPDCCH having the common CRS configuration, the resource set dependent rate matching parameters including first rate-matching parameters configured for the first resource set and second rate-matching parameters configured for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters; and

receive the EPDCCH using the first resource set and the second resource set,

wherein the first rate-matching parameters correspond to a first CRS comprised in the common CRS configuration, wherein EPDCCH resource elements (REs) in the first resource set are rate-matched around the first CRS, and

wherein the second rate-matching parameters correspond to a second CRS comprised in the common CRS configuration, wherein EPDCCH REs in the second resource set are rate-matched around the second CRS.

23. The non-transitory computer-readable medium of claim 22, wherein the first and second resource sets are further configured using a common CSI-RS configuration.

24. The non-transitory computer-readable medium of claim 22, wherein the first rate-matching parameters are configured via a first radio resource control (RRC) configuration and the second rate-matching parameters are configured via a second RRC configuration.