METHOD AND APPARATUS FOR DEFERRING TRANSMISSION

1 . A transmission deferring method by a device in a wireless local area network (WLAN), the method comprising:

receiving a frame including duration information indicating transmission deferring duration and address information indicating an address of a target device for the transmission deferring duration; and

deferring a transmission to the target device during the transmission deferring duration.

2 . The method of claim 1 , wherein receiving the frame includes receiving the frame when the device is associated with the target device.

3 . The method of claim 1 , wherein the frame further includes type information, and

wherein deferring the transmission includes

checking the type information of the frame, and

deferring the transmission to the target device during the transmission deferring duration when the type information indicates a frame requesting transmission deferring.

4 . The method of claim 1 , wherein the frame further includes response indication information, and

wherein deferring the transmission includes

checking the response indication information of the frame,

transmitting a response frame to the target device when the response indication information requests a response, and

deferring the transmission to the target device during the transmission deferring duration after transmitting the response frame.

5 . The method of claim 1 , wherein the frame further includes receiver address information, and

wherein deferring the transmission includes

checking the receiver address information of the frame, and

deferring the transmission to the target device during the transmission deferring duration when the receiver address information indicates an address of the device.

6 . The method of claim 5 , wherein checking the receiver address information of the frame includes determining that the receiver address information indicates the address of the device when the receiver address information has a value corresponding to the address of the device or a predetermined value.

7 . The method of claim 6 , wherein the frame further includes response indication information, and

wherein deferring the transmission includes

checking the response indication information of the frame,

transmitting a response frame to the target device when the response indication information requests a response and the receiver address information has the value corresponding to the address of the device, and

deferring the transmission to the target device during the transmission deferring duration after transmitting the response frame.

8 . The method of claim 1 , wherein the frame is a medium access control (MAC) frame.

9 . The method of claim 8 , wherein the frame has a same format a frame defined in IEEE Std 802.11-2012,

wherein the duration information is assigned to a reserved value in a duration/ID field of a frame defined in IEEE Std 802.11-2012, and

wherein the address information is assigned to a receiver address (RA) field of a frame defined in IEEE Std 802.11-2012.

10 . The method of claim 1 , wherein the frame is a physical layer frame, and

wherein the duration information and the address information are assigned to a signal field of the physical layer frame.

11 . A transmission deferring method by a device in a wireless local area network (WLAN), the method comprising:

generating a frame including duration information indicating transmission deferring duration and address information indicating an address of a target device requesting transmission deferring during the transmission deferring duration; and

transmitting the frame.

12 . The method of claim 11 , wherein the frame further includes type information indicating that the frame has a type requesting the transmission deferring.

13 . The method of claim 11 , wherein the frame further includes response indication information requesting a response on the frame.

14 . The method of claim 11 , wherein the frame further includes receiver address information indicating a receiving device for deferring a transmission to the target device.

15 . The method of claim 14 , wherein the receiving device defers the transmission to the target device during the transmission deferring duration when the receiver address information has a value corresponding to the address of the device or a predetermined value.

16 . The method of claim 15 , wherein the frame further includes response indication information requesting a response on the frame, and

the receiving device transmits the response to the device when the receiver address information has the value corresponding to the address of the device.

17 . The method of claim 11 , wherein the frame is a medium access control (MAC) frame.

18 . The method of claim 17 , wherein the frame has a same format a frame defined in IEEE Std 802.11-2012,

wherein the duration information is assigned to a reserved value in a duration/ID field of a frame defined in IEEE Std 802.11-2012, and

wherein the address information is assigned to a receiver address (RA) field of a frame defined in IEEE Std 802.11-2012.

19 . The method of claim 11 , wherein the frame is a physical layer frame, and

wherein the duration information and the address information are assigned to a signal field of the physical layer frame.

20 . A transmission deferring apparatus in a wireless local area network (WLAN), the apparatus comprising:

a transceiver configured to receive a frame including duration information indicating transmission deferring duration and address information indicating an address of a target device for the transmission deferring duration; and

a processor configured to defer a transmission to the target device during the transmission deferring duration.