EPDCCH RESOURCE AND QUASI-CO-LOCATION MANAGEMENT IN LTE

• US 20150257139A1
• Filed: 05/21/2015
• Published: 09/10/2015
• 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 10,123,313 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 a control channel, wherein the first and second resource sets are configured with a common reference signal configuration;

configuring first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set;

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

transmitting the control channel using the first resource set and the second resource set.

2. The method of claim 1, wherein the common reference signal configuration comprises at least a common channel state information reference signals (CSI-RS) configuration or a common reference signals (CRS) configuration.

3. The method of claim 1, wherein the first rate-matching parameters indicate that control channel resource elements (REs) are rate-matched around all channel state information reference signals (CSI-RS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS in the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CSI-RS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS on the second resource set.

4. The method of claim 1, wherein the first rate-matching parameters indicate that the control channel REs are rate-matched around all cell-specific reference signals (CRS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CRS on the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CRS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CRS in the second resource set.

5. 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.

6. The method of claim 1, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

7. An apparatus for wireless communication, comprising:

means for configuring 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 common reference signal configuration;

means for configuring first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set;

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

means for transmitting the control channel using the first resource set and the second resource set.

8. The apparatus of claim 7, wherein the common reference signal configuration comprises at least a common channel state information reference signals (CSI-RS) configuration or a common reference signals (CRS) configuration.

9. The apparatus of claim 7, wherein the first rate-matching parameters indicate that control channel resource elements (REs) are rate-matched around all channel state information reference signals (CSI-RS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS in the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CSI-RS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS on the second resource set.

10. The apparatus of claim 7, wherein the first rate-matching parameters indicate that the control channel REs are rate-matched around all cell-specific reference signals (CRS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CRS on the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CRS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CRS in the second resource set.

11. 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.

12. The apparatus of claim 7, wherein the control channel comprises an enhanced physical downlink control channel (EPDCCH).

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

configure first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set;

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

transmit the control channel using the first resource set and the second resource set.

14. The apparatus of claim 13, wherein the common reference signal configuration comprises at least a common channel state information reference signals (CSI-RS) configuration or a common reference signals (CRS) configuration.

15. The apparatus of claim 13, wherein the first rate-matching parameters indicate that control channel resource elements (REs) are rate-matched around all channel state information reference signals (CSI-RS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS in the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CSI-RS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS on the second resource set.

16. The apparatus of claim 13, wherein the first rate-matching parameters indicate that the control channel REs are rate-matched around all cell-specific reference signals (CRS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CRS on the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CRS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CRS in the second resource set.

17. 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.

18. The apparatus of claim 13, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).

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

configuring first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set;

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

transmitting the control channel using the first resource set and the second resource set.

20. The computer-readable medium of claim 19, wherein the common reference signal configuration comprises at least a common channel state information reference signals (CSI-RS) configuration or a common reference signals (CRS) configuration.

21. The computer-readable medium of claim 19, wherein the first rate-matching parameters indicate that control channel resource elements (REs) are rate-matched around all channel state information reference signals (CSI-RS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS in the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CSI-RS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CSI-RS on the second resource set.

22. The computer-readable medium of claim 19, wherein the first rate-matching parameters indicate that the control channel REs are rate-matched around all cell-specific reference signals (CRS) in the first resource set or indicate that the control channel REs are rate-matched around a subset of the CRS on the first resource set, and

wherein the second rate-matching parameters indicate that the control channel REs are rate-matched around all of the CRS on the second resource set or indicate that the control channel REs are rate-matched around a subset of the CRS in the second resource set.

23. The 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.

24. The computer-readable medium of claim 19, wherein the control channel is an enhanced physical downlink control channel (EPDCCH).