Method for transmitting signal using a frame of a predetermined cyclic prefix length in a wireless communication system

• US 8,483,137 B2
• Filed: 04/28/2010
• Issued: 07/09/2013
• Est. Priority Date: 05/07/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lim, Dong Guk, Cho, Han Gyu, Moon, Sung Ho, Kwak, Jin Sam
• Primary Examiner(s): Wong, Warner
• Application Number:
  US13/148,660
• Publication Number:
  US 20120039221A1
• Time in Patent Office: 1,168 Days
• Field of Search: 370/280, 370/328, 370/329, 370/338
• US Class Current: 370/328
• CPC Class Codes: H04L 25/03114 non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 27/2626 Arrangements specific to the transmitter only

Abstract

A method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) in a wireless communication system is disclosed. The method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) length in a wireless communication system that supports a plurality of cells comprises receiving the signal using a first frame from a base station; and transmitting the signal to the base station using the first frame, wherein the first frame is supported by a first cell of the plurality of cells and is different from a second frame supported by a second cell of the plurality of cells, the first frame has a structure where a overlap region between an uplink region of the first frame and a downlink region of the second frame or an overlap region between a downlink region of the first frame and an uplink region of the second frame is punctured, and a CP length of the first frame is different from that of the second frame.

Claims

1. A method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) length in a wireless communication system that supports a plurality of cells, the method comprising:

receiving the signal using a first frame from a base station; and

transmitting the signal to the base station using the first frame, wherein the first frame is supported by a first cell of the plurality of cells and is different from a second frame supported by a second cell of the plurality of cells, the first frame has a structure where a overlap region between an uplink region of the first frame and a downlink region of the second frame or an overlap region between a downlink region of the first frame and an uplink region of the second frame is punctured, and a CP length of the first frame is different from that of the second frame.

2. The method of claim 1, wherein the CP length of the first frame is ¼

of a useful symbol length, and the number of subframes included in the first frame is smaller than the number of subframes included the second frame by 1.

3. The method of claim 2, wherein, if the downlink region of the first frame is overlapped with the uplink region of the second frame, a predetermined number of symbols of a last subframe of downlink subframes of the first frame are punctured.

4. The method of claim 2, wherein, if the uplink region of the first frame is overlapped with the downlink region of the second frame, a predetermined number of symbols of a first subframe of uplink subframes of the first frame are punctured.

5. The method of claim 2, wherein a subframe that includes the overlapped region is punctured at the first frame.

6. The method of claim 1, wherein the first frame and the second frame are time division duplex (TDD) frames.

7. The method of claim 1, further comprising receiving information of the punctured region.

8. The method of claim 7, wherein the information of the punctured region includes information of the punctured symbol or the punctured subframe.

9. A user equipment in a wireless communication system that supports a plurality of cells, the user equipment comprising:

a receiving unit receiving a signal using a first frame from a base station;

a transmitting unit transmitting the signal to the base station using the first frame; and

a processing unit controlling the receiving unit and the transmitting unit,

wherein the system supports a plurality of cells, the first frame is supported by a first cell of the plurality of cells and is different from a second frame supported by a second cell of the plurality of cells, the first frame has a structure where a overlap region between an uplink region of the first frame and a downlink region of the second frame or an overlap region between a downlink region of the first frame and an uplink region of the second frame is punctured, and a CP length of the first frame is different from that of the second frame.

10. The user equipment of claim 9, wherein the CP length of the first frame is ¼

of a useful symbol length, and the number of subframes included the first frame is smaller than the number of subframes included in the second frame by 1.

11. The user equipment of claim 10, wherein, if the downlink region of the first frame is overlapped with the uplink region of the second frame, a predetermined number of symbols of a last subframe of downlink subframes of the first frame are punctured.

12. The user equipment of claim 10, wherein, if the uplink region of the first frame is overlapped with the downlink region of the second frame, a predetermined number of symbols of a first subframe of uplink subframes of the first frame are punctured.

13. The user equipment of claim 10, wherein a subframe that includes the overlapped region is punctured at the first frame.

14. The user equipment of claim 9, wherein the first frame and the second frame are time division duplex (TDD) frames.

15. The user equipment of claim 9, wherein the receiving unit receives information of the punctured region.

16. The user equipment of claim 15, wherein the information of the punctured region includes information of the punctured symbol or the punctured subframe.