EPDCCH RESOURCE AND QUASI-CO-LOCATION MANAGEMENT IN LTE

• US 20170311299A1
• Filed: 06/23/2017
• Published: 10/26/2017
• 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
• Granted Patent: US 10,098,109 B2
• Time in Patent Office: 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

receiving first rate-matching parameters configured for the first resource set;

receiving 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 control channel base on the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first channel state information reference signals (CSI-RS), wherein control channel 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, wherein control channel REs in the second resource set are rate-matched around the second CSI-RS.

2. The method of claim 1, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or 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. The method of claim 1, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

5. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

receiving first rate-matching parameters configured for the first resource set;

receiving 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 control channel using the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first cell-specific reference signals (CRS), wherein control channel REs in the first resource set are rate-matched around the first, and

wherein the second rate-matching parameters indicate second CRS, wherein control channel REs in the second resource set are rate-matched around the second CRS.

6. The method of claim 5, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or a common reference signals (CRS) configuration.

7. The method 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. The method of claim 5, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

9. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

means for receiving first rate-matching parameters configured for the first resource set and receiving 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 control channel base on the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first channel state information reference signals (CSI-RS), wherein control channel 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, wherein control channel REs in the second resource set are rate-matched around the second CSI-RS.

10. The apparatus of claim 9 , wherein the common reference signal configuration comprises at least a common CSI-RS configuration or a common reference signals (CRS) configuration.

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. The apparatus of claim 9, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

13. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

means for receiving first rate-matching parameters configured for the first resource set and receiving 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 control channel using the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first cell-specific reference signals (CRS), wherein control channel REs in the first resource set are rate-matched around the first, and

wherein the second rate-matching parameters indicate second CRS, wherein control channel REs in the second resource set are rate-matched around the second CRS.

14. The apparatus of claim 13, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or 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. The apparatus of claim 13, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

17. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

receive first rate-matching parameters configured for the first resource set;

receive 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 control channel base on the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first channel state information reference signals (CSI-RS), wherein control channel 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, wherein control channel REs in the second resource set are rate-matched around the second CSI-RS.

18. The apparatus of claim 17, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or a common reference signals (CRS) configuration.

19. The apparatus of claim 17, 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.

20. The apparatus of claim 17, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

21. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

receive first rate-matching parameters configured for the first resource set;

receive 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 control channel using the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first cell-specific reference signals (CRS), wherein control channel REs in the first resource set are rate-matched around the first, and

wherein the second rate-matching parameters indicate second CRS, wherein control channel REs in the second resource set are rate-matched around the second CRS.

22. The apparatus of claim 21, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or a common reference signals (CRS) configuration.

23. The apparatus of claim 21, 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.

24. The apparatus of claim 21, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

25. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

receive first rate-matching parameters configured for the first resource set;

receive 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 control channel base on the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first channel state information reference signals (CSI-RS), wherein control channel 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, wherein control channel REs in the second resource set are rate-matched around the second CSI-RS.

26. The computer-readable medium of claim 25, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or a common reference signals (CRS) configuration.

27. The computer-readable medium of claim 25, 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.

28. The computer-readable medium of claim 25, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

29. 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 a control channel, wherein the first and second resource sets are configured with a reference signal configuration in common;

receive first rate-matching parameters configured for the first resource set;

receive 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 control channel using the first resource set and the second resource set,

wherein the first rate-matching parameters indicate first cell-specific reference signals (CRS), wherein control channel REs in the first resource set are rate-matched around the first, and

wherein the second rate-matching parameters indicate second CRS, wherein control channel REs in the second resource set are rate-matched around the second CRS.

30. The computer-readable medium of claim 29, wherein the common reference signal configuration comprises at least a common CSI-RS configuration or a common reference signals (CRS) configuration.

31. The computer-readable medium of claim 29, 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.

32. The computer-readable medium of claim 29, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).