METHOD AND APPARATUS FOR CONTROLLING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM

• US 20140254516A1
• Filed: 03/07/2014
• Published: 09/11/2014
• Est. Priority Date: 03/07/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Lee, Hyojin, Kim, Younsun, Kwak, Yongjun, Kim, Youngbum, Lee, Juho, Ji, Hyoungju
• Granted Patent: US 10,485,021 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04J 11/0023 Interference mitigation or co-ordination direct sequence spread spectrum [DSSS] systems H04B1/7097; frequency hopping H04B1/713; allocation criteria for ingress interference avoidance H04L5/0062; frequency allocation criteria for requirements on out-of-channel emissions H04L5/0066; arrangements for removing intersymbol interference or baseband equalisers H04L25/03006; peak power aspects in multicarrier modulation H04L27/2614; power management H04W52/00; traffic scheduling H04W72/54, H04W72/541
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 74/002 Transmission of channel access control information

Abstract

A method and apparatus for transmitting control information is provided for use in detection of interference an signal in a wireless communication system. An interference control method of a base station of a mobile communication system includes scheduling data to be transmitted to a terminal and transmitting control information including data channel information on the scheduled data and interference signal information to the terminal.

Claims

1. An interference control method of a base station of a mobile communication system, the method comprising:

scheduling data to be transmitted to a terminal; and

transmitting control information including data channel information on the scheduled data and interference signal information to the terminal.

2. The method of claim 1, wherein the control information comprises a modulation scheme of the interference signal.

3. The method of claim 1, wherein the control information comprises an indicator indicating whether the terminal performs interference cancellation.

4. The method of claim 1, wherein the control information comprises DeModulation Reference Signal (DMRS) information of the interference signal.

5. The method of claim 1, wherein the control information comprises at least one of Channel Status Information Reference Signal (CSI-RS) information related to DeModulation Reference Signal (DMRS) information of the interference signal and Cell-specific Reference Signal (CRS) information related to the DMRS of the interference signal.

6. An interference control method of a terminal in a wireless communication system, the method comprising:

receiving control information including information on a data channel scheduled for the terminal and interference signal information from a base station; and

performing interference control based on the interference signal information.

7. The method of claim 6, wherein the control information comprises a modulation scheme of the interference signal.

8. The method of claim 6, wherein the control information comprises an indicator indicating whether the terminal performs interference cancellation.

9. The method of claim 6, wherein the control information comprises DeModulation Reference Signal (DMRS) information of the interference signal.

10. The method of claim 6, wherein the control information comprises at least one of Channel Status Information Reference Signal (CSI-RS) information related to DeModulation Reference Signal (DMRS) information of the interference signal and Cell-specific Reference Signal (CRS) information related to the DMRS of the interference signal.

11. A base station for controlling interference in a mobile communication system, the base station comprising:

a transceiver which transmits and receives signals to and from a terminal; and

a controller configured to control scheduling data to be transmitted to a terminal, and transmit control information including data channel information on the scheduled data and interference signal information to the terminal.

12. The base station of claim 11, wherein the control information comprises a modulation scheme of the interference signal.

13. The base station of claim 11, wherein the control information comprises an indicator indicating whether the terminal performs interference cancellation.

14. The base station of claim 11, wherein the control information comprises DeModulation Reference Signal (DMRS) information of the interference signal.

15. The base station of claim 11, wherein the control information comprises at least one of Channel Status Information Reference Signal (CSI-RS) information related to DeModulation Reference Signal (DMRS) information of the interference signal and Cell-specific Reference Signal (CRS) information related to the DMRS of the interference signal.

16. A terminal for controlling interference in a mobile communication system, the terminal comprising:

a transceiver which transmits and receives signals to and from a base station; and

a controller configured to control receiving control information including information on a data channel scheduled for the terminal and interference signal information from a base station, and perform interference control based on the interference signal information.

17. The terminal of claim 16, wherein the control information comprises a modulation scheme of the interference signal.

18. The terminal of claim 16, wherein the control information comprises an indicator indicating whether the terminal performs interference cancellation.

19. The terminal of claim 16, wherein the control information comprises DeModulation Reference Signal (DMRS) information of the interference signal.

20. The terminal of claim 16, wherein the control information comprises at least one of Channel Status Information Reference Signal (CSI-RS) information related to DeModulation Reference Signal (DMRS) information of the interference signal and Cell-specific Reference Signal (CRS) information related to the DMRS of the interference signal.