Method and apparatus for transmitting data in wireless LAN system
Disclosed are a method and an apparatus for transmitting data in a wireless LAN system. The method for transmitting data comprises the steps of: generating an activation request frame including end-point terminal identifier information for operating an end-point terminal connected to a relay device and in a wake mode; and transmitting the activation request frame to the relay device. As a result, the occurrence of a buffer overflow in the relay device can be prevented.
1. A method for data transmission being performed by a relay device, the method comprising:
receiving, from a master access point, an activation request frame that includes an action category field and a first relay activation field; and
transmitting, to the master access point, an activation response frame that includes the action category field and a second relay activation field,
wherein the action category field indicates a relay action of the relay device,
the first relay activation field indicates an activation request for a station (STA) connected to the relay device, and
the second relay activation field indicates an activation response from the station (STA).
2. The method of claim 1 , wherein the activation request frame further includes address information indicates an address of the station (STA).
3. The method of claim 2 , wherein the address information of the station (STA) is an association identifier (AID).
4. The method of claim 1 , wherein the method further comprises;
generating a traffic indication map (TIM) including address information of the station (STA); and
transmitting a relay beacon frame including the TIM.
5. The method of claim 4 , further comprising:
receiving a power save (PS)-Poll frame from the station (STA); and
transmitting an ACK frame as a response to the PS-Poll frame.
6. The method of claim 1 , wherein the activation response frame indicates that the station (STA) connected to the relay device operates in an awake mode.
7. The method of claim 1 , wherein the method further comprises;
receiving a data frame from the master access point; and
transmitting the data frame to the station (STA) connected to the relay device.
8. The method of claim 7 , wherein transmitting the data frame to the station (STA) is configured to transmit the data frame to the station (STA) after transmitting an ACK frame that is a response to the data frame to the master access point.
9. The method of claim 1 , further comprising:
receiving a PS-Poll frame from the station (STA);
transmitting an ACK frame as a response to the PS-Poll frame;
receiving a data frame from the master access point; and
transmitting the data frame to the station (STA).
10. The method of claim 9 , wherein transmitting the data frame to the station (STA) is configured to transmit the data frame to the station (STA) after transmitting an ACK frame that is a response to the data frame to the master access point.
11. A relay device for data transmission comprises:
a relay access point (R-AP); and
a relay terminal (R-STA),
wherein the relay terminal (R-STA) is configured to
receive, from a master access point, an activation request frame that includes an action category field and a first relay activation field; and
transmit, to the master access point, an activation response frame that includes the action category field and a second relay activation field,
wherein the action category field indicates a relay action of the relay device,
the first relay activation field indicates an activation request for a station (STA) connected to the relay device, and
the second relay activation field indicates an activation response from the station (STA).
12. The relay device of claim 11 , wherein the activation request frame further includes address information indicates an address of the station (STA).
13. The relay device of claim 12 , wherein the address information of the station (STA) is an association identifier (AID).
14. The relay device of claim 11 , wherein the relay access point (R-AP) is configured to generate a traffic indication map (TIM) including address information of the station (STA) and transmit a relay beacon frame including the TIM.
15. The relay device of claim 14 , wherein the relay access point (R-AP) is configured to receive a power save (PS)-Poll frame from the station (STA) and transmit an ACK frame as a response to the PS-Poll frame.
16. The relay device of claim 11 , wherein the activation response frame indicates that the station (STA) connected to the relay device operates in an awake mode.
17. The relay device of claim 11 , wherein the relay terminal (R-STA) is configured to receive a data frame from the master access point and the relay access point (R-AP) is configured to transmit the data frame to the station (STA) connected to the relay device.
18. The relay device of claim 17 , wherein the relay access point (R-AP) is configured to transmit the data frame to the station (STA) after transmitting an ACK frame that is a response to the data frame to the master access point.
19. The relay device of claim 11 , wherein the relay access point (R-AP) is configured to receive a PS-Poll frame from the station (STA) and transmit an ACK frame as a response to the PS-Poll frame; and
the relay terminal (R-STA) is configured to receive a data frame from the master access point.
20. The relay device of claim 19 , wherein the relay access point (R-AP) is configured to transmit the data frame to the station (STA) after transmitting an ACK frame that is a response to the data frame to the master access point.