Method and apparatus for performing coordinated multi-point transmission and reception in wireless communication system

Patent metadata

Field	Value
Publication number	US-9426818-B2
Application number	US-94488110-A
Country	US
Kind code	B2
Filing date	Nov 12, 2010
Priority date	Nov 24, 2009
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

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.

First claim

What is claimed is:

1. An operating method of a base station for a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the method comprising:
receiving, from a terminal, a sounding reference signal (SRS) generated by using a cell identifier (ID);
measuring, if the cell ID is identical to a cell ID for the CoMP transmission, a channel quality between the base station and the terminal based on the SRS; and
transmitting, to the terminal, if the channel quality is greater than a designated value, a notification message informing that the base station participates in the CoMP transmission for the terminal.

2. The method of claim 1 , wherein the cell ID indicates whether the terminal supports the CoMP transmission.

3. The method of claim 1 , further comprising:
transmitting, to the terminal, if the cell ID is different from a cell ID for the CoMP transmission, a notification message informing that the base station does not participate in the CoMP transmission for the terminal.

4. The method of claim 1 , further comprising:
receiving at least one information for channel quality between at least one neighboring base station and the terminal; and
generating, based on the at least one information, a cell clustering group for the CoMP transmission.

5. The method of claim 1 , further comprising:
transmitting, to the terminal, if the channel quality is less than or equal to the designated value, a notification message informing that the base station does not participate in the CoMP transmission for the terminal.

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

7. An operating method of a terminal for a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the method comprising:
transmitting, to a base station, a sounding reference signal (SRS) generated by using a cell identifier (ID); and
receiving, from the base station, a notification message informing that the base station participates in the CoMP transmission for the terminal,
wherein the notification message is transmitted from the base station if a channel quality between the base station and the terminal is greater than a designated value, and
wherein the channel quality is measured based on the SRS if the cell ID is identical to a cell ID for the CoMP transmission.

8. The method of claim 7 , wherein the cell ID indicates whether the terminal supports the CoMP transmission.

9. The method of claim 7 , further comprising:
receiving, from the base station, a notification message informing that the base station does not participate in the CoMP transmission for the terminal if the cell ID is different from a cell ID for the CoMP transmission.

10. The method of claim 7 , further comprising:
receiving, from the base station, a notification message informing that the base station does not participate in the CoMP transmission for the terminal if the channel quality is less than or equal to the designated value.

11. 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.

12. An apparatus of a base station for a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the apparatus comprising:
at least one transceiver; and
at least one processor coupled to the at least one transceiver,
wherein the at least one processor is configured to:
receive, from a terminal, a sounding reference signal (SRS) generated by using a cell identifier (ID),
measure, if the cell ID is identical to a cell ID for the CoMP transmission, a channel quality between the base station and the terminal based on the SRS, and
transmit, to the terminal, if the channel quality is greater than a designated value, a notification message informing that the base station participates in the CoMP transmission for the terminal.

13. The apparatus of claim 12 , wherein the at least one processor is further configured to:
transmit, to the terminal, if the cell ID is different from a cell ID for the CoMP transmission, a notification message informing that the base station does not participate in the CoMP transmission for the terminal.

14. The apparatus of claim 12 , wherein the at least one processor is further configured to:
transmit, to the terminal, if the channel quality is less than or equal to the designated value, a notification message informing that the base station does not participate in the CoMP transmission for the terminal.

15. The apparatus of claim 12 , wherein the at least one processor is further configured to:
receive at least one information for channel quality between at least one neighboring base station and the terminal; and
generate, based on the at least one information, a cell clustering group for the CoMP transmission.

16. An apparatus of a terminal for a Coordinated Multi-Point (CoMP) transmission in a wireless communication system, the apparatus comprising:
at least one transceiver; and
at least one processor coupled to the at least one transceiver,
wherein the at least one processor is configured to:
transmit, to a base station, a sounding reference signal (SRS) generated by using a cell identifier (ID), and
receive, from the base station, a notification message informing that the base station participates in the CoMP transmission for the terminal,

wherein the notification message is transmitted from the base station if a channel quality between the base station and the terminal is greater than a designated value, and
wherein the channel quality is measured based on the SRS if the cell ID is identical to a cell ID for the CoMP transmission.

17. The apparatus of claim 16 , wherein the cell ID indicates whether the terminal supports the CoMP transmission.

18. The apparatus of claim 16 , wherein the at least one processor is further configured to:
receive, from the base station, a notification message informing that the base station does not participate in the CoMP transmission for the terminal if the cell ID is different from a cell ID for the CoMP transmission.

19. The apparatus of claim 16 , wherein the at least one processor is further configured to:
receive, from the base station, a notification message informing that the base station does not participate in the CoMP transmission for the terminal if the channel quality is less than or equal to the designated value.

20. The apparatus of claim 16 , 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.

Assignees

• Lee Won-Mu
• Kim Hun-Kee
• Samsung Electronics Co Ltd

Inventors

• Lee Won-Mu
• Kim Hun-Kee

Classifications

• H04W72/542 Primary

  using measured or perceived quality · CPC title

• H04W72/1231 Primary

  Electricity · mapped topic

• H04W72/121

  for groups of terminals or users · CPC title

• H04W16/24 Primary

  Cell structures · CPC title

• H04W48/20

  Selecting an access point · CPC title