METHOD AND APPARATUS FOR COORDINATED MULTIPLE POINT TRANSMISSION AND RECEPTION

• US 20100203887A1
• Filed: 02/09/2010
• Published: 08/12/2010
• Est. Priority Date: 02/10/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Hakscong
• Granted Patent: US 8,700,039 B2
• Time in Patent Office: Days
• US Class Current: 455/434
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 8/186 Processing of subscriber group data

Abstract

A method and apparatus for cooperative multiple point transmission and reception (CoMP) are provided. The method includes: receiving channel information for a cell included in a clustering set from a user equipment; determining an active set consisting of a cell performing CoMP on the user equipment by using the channel information; and determining a cooperation period in which at least one of the clustering set and the active set is applied to the user equipment, where the clustering set denotes a set of candidate cells which can be included in the active set.

Claims

1. A cooperation determination apparatus comprising:

a channel information receiver receiving channel information for a cell included in a clustering set measured by a user equipment;

a cooperation cell determination unit determining an active set consisting of a cell performing cooperative multiple point transmission and reception (CoMP) on the user equipment by using the channel information; and

a cooperation period determination unit determining a cooperation period in which at least one of the clustering set and the active set is applied to the user equipment, wherein the cooperation period in which the clustering set or the active set is applied to the user equipment is determined on a subframe basis or based on an integer multiple of the subframe, where the clustering set denotes a set of candidate cells which can be included in the active set.

2. The cooperation determination apparatus of claim 1, wherein the cooperation period in which the clustering set is applied to the user equipment is determined based on an integer multiple of the subframe.

3. The cooperation determination apparatus of claim 2, wherein the cooperation period in which the active set is applied to the user equipment is determined based on an integer multiple of the subframe.

4. The cooperation determination apparatus of claim 2, wherein the cooperation period in which the active set is applied to the user equipment is determined on a subframe basis.

5. The cooperation determination apparatus of claim 1, further comprising transmitting the cooperation period to the user equipment or a base station scheduling the user equipment by using a signal of a physical layer or a signal of a higher layer than the physical layer.

6. The cooperation determination apparatus of claim 5, wherein the cooperation period in which the clustering set is applied to the user equipment is transmitted by using the higher layer signal.

7. The cooperation determination apparatus of claim 5, wherein the cooperation period in which the active set is applied to the user equipment is transmitted by using the physical layer signal.

8. The cooperation determination apparatus of claim 1, further comprising receiving a mode configuration indicator by the cooperation period determination unit, wherein the mode configuration indicator is information indicating a cooperation period determination mechanism for the clustering set and active set for the user equipment.

9. A method of cooperative multiple point transmission and reception (CoMP), comprising:

receiving channel information for a cell included in a clustering set from a user equipment;

determining an active set consisting of a cell performing CoMP on the user equipment by using the channel information; and

determining a cooperation period in which at least one of the clustering set and the active set is applied to the user equipment.

10. The method of claim 9, further comprising transmitting the cooperation period to the user equipment.

11. The method of claim 10, wherein the cooperation period is transmitted by using a signal of a physical layer or a signal of a higher layer than the physical layer.

12. The method of claim 11, wherein the cooperation period in which the clustering set is applied to the user equipment is transmitted by using the higher layer signal.

13. The method of claim 11, wherein the cooperation period in which the active set is applied to the user equipment is transmitted by using the physical layer signal.

14. The method of claim 9, wherein the cooperation period in which the clustering set is applied to the user equipment is determined based on an integer multiple of a subframe.

15. The method of claim 14, wherein the cooperation period in which the active set is applied to the user equipment is determined based on an integer multiple of the subframe.

16. The method of claim 14, wherein the cooperation period in which the active set is applied to the user equipment is determined on a subframe basis.

17. The method of claim 9, further comprising:

transmitting an additional measurement indicator indicating channel measurement on a cell included in a different clustering set adjacent to the clustering set; and

receiving channel information on the cell included in the different clustering set.

18. The method of claim 17, wherein the determining of the active set comprises the cell included in the different clustering set.

19. The method of claim 17, further comprising:

transmitting a signal which requests a dedicated reference signal for channel measurement on the cell included in the different clustering set.