EPDCCH resource and quasi-co-location management in LTE

• US 10,123,313 B2
• Filed: 05/21/2015
• Issued: 11/06/2018
• 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
• Application Number:
  US14/719,220
• Publication Number:
  US 20150257139A1
• Time in Patent Office: 1,265 Days
• Field of Search: 370329
• 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, comprising:

configuring 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 channel state information reference signals (CSI-RS) configuration in common;

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

transmitting the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CSI-RS comprised in the CSI-RS configuration in common, 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 indicate second CSI-RS comprised in the CSI-RS configuration in common, 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 resource set and the second resource set for the EPDCCH further comprise common reference signals (CRS) configuration in common.

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, comprising:

configuring 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 cell-specific reference signals (CRS) configuration in common;

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

transmitting the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CRS comprised in the CRS configuration in common, wherein REs in the first resource set are rate-matched around the first CRS, and

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

5. An apparatus for wireless communication, comprising:

means for configuring 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 channel state information reference signals (CSI-RS) configuration in common;

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

means for transmitting the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CSI-RS comprised in the CSI-RS configuration in common, 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 indicate second CSI-RS comprised in the CSI-RS configuration in common, wherein EPDCCH resource elements (REs) in the second resource set are rate-matched around the second CSI-RS.

6. The apparatus of claim 5, wherein the first resource set and the second resource set for the EPDCCH further comprise common reference signals (CRS) configuration in common.

7. The apparatus of claim 5, 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.

8. An apparatus for wireless communication, comprising:

means for configuring 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 cell-specific reference signals (CRS) configuration in common;

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

means for transmitting the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CRS comprised in the CRS configuration in common, wherein EPDCCH REs in the first resource set are rate-matched around the first CRS, and

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

9. An apparatus for wireless communication, comprising:

a memory; and

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

configure 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 channel state information reference signals (CSI-RS) configuration in common;

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

transmit the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CSI-RS comprised in the CSI-RS configuration in common, 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 indicate second CSI-RS comprised in the CSI-RS configuration in common, wherein EPDCCH resource elements (REs) in the second resource set are rate-matched around the second CSI-RS.

10. The apparatus of claim 9, wherein the first resource set and the second resource set for the EPDCCH further comprise common reference signals (CRS) configuration in common.

11. The apparatus of claim 9, 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.

12. An apparatus for wireless communication, comprising:

a memory; and

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

configure 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 cell-specific reference signals (CRS) configuration in common;

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

transmit the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CRS comprised in the CRS configuration in common, wherein EPDCCH REs in the first resource set are rate-matched around the first CRS, and

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

13. A non-transitory computer-readable medium storing computer executable code for wireless communication, comprising code for:

configuring 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 channel state information reference signals (CSI-RS) configuration in common;

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

transmitting the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CSI-RS comprised in the CSI-RS configuration in common, 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 indicate second CSI-RS comprised in the CSI-RS configuration in common, wherein EPDCCH resource elements (REs) in the second resource set are rate-matched around the second CSI-RS.

14. The non-transitory computer-readable medium of claim 13, wherein the first resource set and the second resource set for the EPDCCH further comprise common reference signals (CRS) configuration in common.

15. The non-transitory computer-readable medium 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. A non-transitory computer-readable medium storing computer executable code for wireless communication, comprising code for:

configuring resource set dependent rate matching parameters for the EPDCCH having the CRS configuration in common, the resource set dependent rate matching parameters including 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 cell-specific reference signals (CRS) configuration in common;

configuring first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set, the first rate-matching parameters being different from the second rate-matching parameters;

transmitting the first rate-matching parameters and the second rate-matching parameters; and

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

wherein the first rate-matching parameters indicate first CRS comprised in the CRS configuration in common, wherein EPDCCH REs in the first resource set are rate-matched around the first CRS, and

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