METHOD AND APPARATUS FOR PERFORMING COORDINATED MULTI-POINT TRANSMISSION AND RECEPTION IN WIRELESS COMMUNICATION SYSTEM

• US 20110124345A1
• Filed: 11/12/2010
• Published: 05/26/2011
• Est. Priority Date: 11/24/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Won-Mu, KIM, Hun-Kee
• Granted Patent: US 9,426,818 B2
• Time in Patent Office: Days
• US Class Current: 455/452.2
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

A method and an apparatus for performing a Coordinated Multi-Point (CoMP) transmission in a wireless communication system are provided. An operating method of a base station for the CoMP transmission in a wireless communication system includes performing a cell clustering for CoMP transmission of a terminal, receiving a reference signal from the terminal, determining cell IDentifier (ID) information of the terminal, when the terminal uses a cell ID for the CoMP transmission, comparing a Channel Quality Indicator (CQI) value of the reference signal with a threshold, and when the CQI value of the reference signal is greater than or equal to the threshold, participating in the CoMP transmission of the terminal.

Claims

1. An operating method of a base station for a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the method comprising:

performing a cell clustering for CoMP transmission of a terminal;

receiving a reference signal from the terminal and determining cell IDentifier (ID) information of the terminal;

comparing a Channel Quality Indicator (CQI) value of the reference signal with a threshold, when the terminal uses a cell ID for the CoMP transmission; and

participating in the CoMP transmission of the terminal, when the CQI value of the reference signal is greater than or equal to the threshold.

2. The method of claim 1, wherein, when the CQI value of the reference signal is less than the threshold, the CoMP transmission of the terminal is not supported.

3. The method of claim 1, wherein the cell clustering is at least one of fixed clustering, User Equipment (UE)-specific clustering, and semi-fixed cell clustering.

4. The method of claim 1, wherein, when the terminal does not use the cell ID for the CoMP transmission, the CoMP transmission of the terminal is not supported.

5. The method of claim 1, wherein the reference signal is a sounding signal.

6. The method of claim 1, wherein the cell ID for the CoMP transmission is distinguished from a general cell ID according to a predefined rule between the base station and the terminal.

9. The method of claim 1, wherein the reference signal is a sounding signal.

7. An operating method of a terminal for a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the method comprising:

determining whether to support the CoMP transmission; and

transmitting a reference signal to a base station using a cell IDentifier (ID) for the CoMP transmission, when supporting the CoMP transmission.

8. The method of claim 7, wherein the cell ID for the CoMP transmission is distinguished from a general cell ID according to a predefined rule between the base station and the terminal.

10. A system for performing a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the system comprising:

a plurality of base stations for forming a cell clustering group and for participating in the CoMP transmission of a terminal; and

the terminal for transmitting the CoMP transmission to the cell clustering group,

wherein each of the base stations determines cell IDentifier (ID) information of the terminal by receiving a reference signal from the corresponding terminal, compares a Channel Quality Indicator (CQI) value of the reference signal with a threshold when the corresponding terminal uses a cell ID for the CoMP transmission, and participates in the CoMP transmission of the terminal when the CQI value of the reference signal is greater than or equal to the threshold, and

wherein the terminal determines whether to support the CoMP transmission, and when supporting the CoMP transmission, transmits a reference signal to the plurality of base stations using a cell ID for the CoMP transmission.

11. The system of claim 10, wherein, when the CQI value of the reference signal is less than the threshold, the base station does not support the CoMP transmission of the terminal.

12. The system of claim 10, wherein the cell clustering is at least one of fixed clustering, User Equipment (UE)-specific clustering, and semi-fixed cell clustering.

13. The system of claim 10, wherein, when the terminal does not use the cell ID for the CoMP transmission and reception, the base station does not support the CoMP transmission of the terminal.

14. The system of claim 10, wherein the reference signal is a sounding signal.

15. The system of claim 10, wherein the cell ID for the CoMP transmission is distinguished from a general cell ID according to a predefined rule between the base station and the terminal.