INTERFERENCE MEASUREMENT METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM

• US 20150327095A1
• Filed: 05/11/2015
• Published: 11/12/2015
• Est. Priority Date: 05/09/2014
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Younsun, Lee, Hyojin, Ji, Hyoungju, KWAK, Youngwoo
• Granted Patent: US 10,454,554 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001
• CPC Class Codes: H04B 7/0621 Feedback content
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic

Abstract

A base station and a method thereof for acquiring channel status information in a mobile communication system operating in a multiuser multiple-input multiple-output transmission mode are provided. The method includes generating and transmitting, to a terminal, interference measurement configuration information for measuring interference caused by signals transmitted from a serving base station of the terminal to at least one other terminal in the transmission mode; and receiving channel status information generated using the transmitted information from the terminal. The present disclosure relates to a communication method and system for converging a 5th-Generation communication system for supporting higher data rates beyond a 4th-Generation system with a technology for Internet of Things, and may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.

Claims

1. A channel status information acquisition method of a base station for acquiring channel status information in a mobile communication system operating in a multiuser multiple-input multiple-output transmission mode, the method comprising:

generating interference measurement configuration information for measuring interference caused by signals transmitted from a serving base station of a terminal to at least one other terminal in the multiuser multiple-input multiple output transmission mode;

transmitting the generated interference measurement configuration information to the terminal; and

receiving channel status information generated using the transmitted interference measurement configuration information from the terminal.

3. The method of claim 1, wherein the interference measurement configuration information comprises selection information for selecting, if multiple interference measurement resources (IMRs) are assigned to the terminal, at least one IMR.

4. The method of claim 1, wherein the interference measurement configuration information is transmitted through Radio Resource Control (RRC) signaling.

5. The method of claim 1, wherein the interference measurement configuration information is transmitted via an aperiodic feedback indicator.

2. The method of claim 2, wherein the interference caused by signals transmitted from the serving base station of the terminal to other terminals is calculated, if one interference measurement resource (IMR) is assigned to the terminal, by adding or removing the signals addressed to the other terminal at the interference measurement resource (IMR).

6. An interference measurement method of a terminal for reporting channel status information in a mobile communication system operating in a multiuser multiple-input multiple-output transmission mode, the method comprising:

receiving interference measurement configuration information for measuring interference caused by signals transmitted from a serving base station of the terminal to at least one other terminal;

measuring the interference based on the interference measurement configuration information;

generating channel status information using the measured interference; and

transmitting the generated channel status information to the base station.

7. The method of claim 6, wherein the interference caused by signals transmitted from the serving base station of the terminal to other terminals is calculated, if one interference measurement resource (IMR) is assigned to the terminal, by adding or removing the signals addressed to the at least one other terminal at the interference measurement resource (IMR).

8. The method of claim 6, wherein the interference measurement configuration information selection information for selecting, if multiple interference measurement resources (IMRs) are assigned to the terminal, at least one IMR.

9. The method of claim 6, wherein the interference measurement configuration information is received through radio resource control (RRC) signaling.

10. The method of claim 6, wherein the interference measurement configuration information is received via an aperiodic feedback indicator.

11. A base station for acquiring channel status information in a mobile communication system operating in a multiuser multiple-input multiple-output transmission mode, the base station comprising:

a transceiver configured to transmit signals to a terminal and receive signals from the terminal; and

a controller configured to generate interference measurement configuration information for measuring interference caused by signals transmitted from a serving base station of the terminal to at least one other terminal in the multiuser multiple-input multiple output transmission mode and to control the transceiver to transmit the interference measurement configuration information to the terminal and receive channel status information generated using the transmitted interference measurement configuration information from the terminal.

12. The base station of claim 11, wherein the interference caused by signals transmitted from the serving base station of the terminal to other terminals is calculated, if one interference measurement resource (IMR) is assigned to the terminal, by adding or removing the signals addressed to the other terminal at the interference measurement resource (IMR).

13. The base station of claim 11, wherein the interference measurement configuration information comprises selection information for selecting, if multiple interference measurement resources (IMRs) are assigned to the terminal, at least one IMR.

14. The base station of claim 11, wherein the interference measurement configuration information is transmitted through radio resource control (RRC) signaling.

15. The base station of claim 11, wherein the interference measurement configuration information is transmitted via an aperiodic feedback indicator.

16. A terminal for reporting channel status information in a mobile communication system operating in a multiuser multiple-input multiple-output transmission mode, the terminal comprising:

a transceiver configured to transmit signals to a base station and receive signals from the base station; and

a controller configured to control the transceiver to receive interference measurement configuration information for measuring interference caused by signals transmitted from a serving base station of the terminal to at least one other terminal, to measure the interference based on the interference measurement configuration information, to generate channel status information using the measured interference, and to control the transceiver to transmit the channel status information to the base station.

17. The terminal of claim 16, wherein the interference caused by signals transmitted from the serving base station of the terminal to other terminals is calculated, if one interference measurement resource (IMR) is assigned to the terminal, by adding or removing the signals addressed to the at least one other terminal at the interference measurement resource (IMR).

18. The terminal of claim 16, wherein the interference measurement configuration information selection information for selecting, if multiple interference measurement resources (IMRs) are assigned to the terminal, at least one IMR.

19. The terminal of claim 16, wherein the interference measurement configuration information is received through radio resource control (RRC) signaling.

20. The terminal of claim 16, wherein the interference measurement configuration information is received via an aperiodic feedback indicator.