METHOD AND DEVICE FOR TRANSMITTING A FRAME USING A MULTIPLE PHYSICAL LAYER IN A WIRELESS LAN SYSTEM

• US 20140140333A1
• Filed: 06/04/2012
• Published: 05/22/2014
• Est. Priority Date: 06/08/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Jong Hyun, Sohn, Ill Soo, Kim, Eun Sun, Seok, Yong Ho
• Granted Patent: US 9,414,413 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 74/085 collision avoidance
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

The present invention relates to a method for transmitting a frame, which is performed by a transmission station in a wireless LAN system that supports frame transmission and reception on the basis of a first physical layer and a second physical layer. The method comprises the steps of: transmitting a request-to-send (RTS) to a reception station through the first physical layer of the transmission station; receiving, by the reception station, a first clear-to-send (CTS) frame transmitted through the first physical layer of the reception station in response to the RTS frame; and transmitting a second CTS frame through the second physical layer of the transmission station, then transmitting a data frame through the first physical layer of the transmission station.

Claims

1. A method for transmitting a frame, which is carried out by a transmission station in a wireless LAN system supporting transmission and reception of a frame based on a first and a second physical layer, the method comprising:

transmitting a Request To Send (RTS) frame to a reception station through a first physical layer of the transmission station;

receiving a first Clear To Send (CTS) frame transmitted in response to the RTS frame by the reception station through a first physical layer of the reception station;

transmitting a second CTS frame through a second physical layer of the transmission station; and

transmitting a data frame through the first physical layer of the transmission station.

2. The method of claim 1, wherein the first CTS frame includes information about time required for transmission of the second CTS frame and the data frame.

3. The method of claim 1, wherein the second CTS frame includes information about time required for transmission of the data frame.

4. The method of claim 1, wherein the RTS frame includes transmission time information indicating the reception station about transmission time of the data frame.

5. The method of claim 4, wherein the transmission time information includes information about time required for transmission of the second CTS frame.

6. The method of claim 1, wherein the first and the second CTS frame are broadcast.

7. A method for receiving a frame, which is carried out by a reception station in a wireless LAN system supporting transmission and reception of a frame based on a first and a second physical layer, the method comprising:

receiving a Request To Send (RTS) frame transmitted from a transmission station through a first physical layer of the transmission station;

transmitting a first Clear To Send (CTS) frame in response to the RTS frame through the first physical layer of the reception station;

transmitting a second CTS frame in response to the RTS frame through a second physical layer of the reception station; and

receiving a data frame transmitted through the first physical layer of the transmission station.

8. The method of claim 7, wherein the first CTS frame includes information about time required for transmission of the second CTS frame and the data frame.

9. The method of claim 7, wherein the second CTS frame includes information about time required for transmission of the data frame.

10. The method of claim 7, wherein the RTS frame includes information about time required for transmission of the data frame.

11. A transmission station which transmits a frame based on a first and a second physical layer, the transmission station comprising a processor, where the processor is configured to transmit a Request To Send (RTS) frame to a reception station through a first physical layer of the transmission station;

receive a first Clear To Send (CTS) frame which is transmitted in response to the RTS frame by the reception station through a first physical layer of the reception station;

transmit a second CTS frame through a second physical layer of the transmission station; and

transmit a data frame through the first physical layer of the transmission station.

12. The transmission station of claim 11, wherein the first CTS frame includes information about time required for transmission of the second CTS frame and the data frame.

13. The transmission station of claim 11, wherein the second CTS frame includes information about time required for transmission of the data frame.