Method and apparatus for operating subframe and transmitting channel information for controlling interference in communication system

• US 10,142,987 B2
• Filed: 04/25/2017
• Issued: 11/27/2018
• Est. Priority Date: 04/12/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Choi, Seunghoon, Cho, Joonyoung, Ji, Hyoungju, Kim, Youngbum
• Primary Examiner(s): Choudhury, Faisal
• Application Number:
  US15/496,616
• Publication Number:
  US 20170230974A1
• Time in Patent Office: 581 Days
• Field of Search: 370252
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A method and an apparatus for operating a subframe and transmitting channel information for controlling interference in a communication system are provided. If a macro evolved Node B (eNodeB) determines and reports an uplink protection subframe for suppressing uplink transmission to a neighboring eNodeB, transmits scheduling information for uplink data through a downlink subframe corresponding to an uplink protection subframe, and the uplink protection subframe determined by the neighboring eNodeB is reported, a small eNodeB sets the reported uplink protection subframe as a flexible subframe, and uses the flexible subframe for downlink transmission. If the flexible subframe is used for the downlink transmission, a terminal of the small eNodeB measures and transmits non-period channel information in the flexible subframe through at least one uplink subframe.

Claims

1. A method by a terminal in a communication system, the method comprising:

receiving, from a base station, first information for at least one subframe;

receiving, from the base station, downlink control information (DCI) on a first subframe, the DCI including second information for channel status information (CSI);

transmitting, to the base station, CSI for a second subframe on a third subframe based on the DCI, if the second information is a first value, the second subframe being identified based on the first information; and

transmitting, to the base station, CSI for a fourth subframe on the third subframe, if the second information is a second value.

2. The method of claim 1, wherein an interval between the first subframe and the third subframe is a smallest value greater than or equal to 4.

3. The method of claim 1, wherein the first subframe is identified such that the first subframe corresponds to a valid downlink subframe or a valid special subframe.

4. A method by a base station in a communication system, the method comprising:

transmitting, to a terminal, first information for at least one subframe;

transmitting, to the terminal, downlink control information (DCI) on a first subframe, the DCI including second information for channel status information (CSI);

receiving, from the terminal, CSI for a second subframe on a third subframe based on the DCI, if the second information is a first value, the second subframe being identified based on the first information; and

receiving, from the terminal, CSI for a fourth subframe on the third subframe, if the second information is a second value.

5. The method of claim 4, wherein an interval between the first subframe and the third subframe is a smallest value greater than or equal to 4.

6. The method of claim 4, wherein the first subframe is identified such that the first subframe corresponds to a valid downlink subframe or a valid special subframe.

7. A terminal in a communication system, the terminal comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to control the transceiver to;

receive, from a base station, first information for at least one subframe,

receive, from the base station, downlink control information (DCI) on a first subframe, the DCI including second information for channel status information (CSI),

transmit, to the base station, CSI for a second subframe on a third subframe based on the DCI, if the second information is a first value the second subframe being identified based on the first information, and

transmit, to the base station, CSI for a fourth subframe on the third subframe, if the second information is a second value.

8. The terminal of claim 7, wherein an interval between the first subframe and the third subframe is a smallest value greater than or equal to 4.

9. The terminal of claim 7, wherein the first subframe is identified such that the first subframe corresponds to a valid downlink subframe or a valid special subframe.

10. A base station in a communication system, the base station comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to control the transceiver to;

transmit, to a terminal, first information for at least one subframe,

transmit, to the terminal, downlink control information (DCI) on a first subframe, the DCI including second information for channel status information (CSI),

receive, from the terminal, CSI for a second subframe on a third subframe based on the DCI, if the second information is a first value, the second subframe being identified based on the first information, and

receive, from the terminal, CSI for a fourth subframe on the third subframe, if the second information is a second value.

11. The base station of claim 10, wherein an interval between the first subframe and the third subframe is a smallest value greater than or equal to 4.

12. The base station of claim 10, wherein the first subframe is identified such that the first subframe corresponds to a valid downlink subframe or a valid special subframe.