Method for transmitting or receiving frame in wireless LAN, and device therefor

1. A method for transmitting a hybrid automatic repeat request (HARQ) physical protocol data unit (PPDU) by a station (STA) in a wireless local area network (WL AN) supporting HARQ process, the method comprising:

generating a HARQ PPDU including allocation information for HARQ burst, which is unit data to which the HARQ process is applied, and multiple HARQ bursts; and

transmitting the HARQ PPDU,

wherein the HARQ PPDU includes a HARQ signaling (SIG) field of a physical layer,

wherein the allocation information for HARQ burst includes a STA ID for each of the multiple HARQ bursts, HARQ burst size information, HARQ process channel ID, and information indicating, in a toggle manner, whether a transmission is a new transmission or retransmission,

wherein the HARQ SIG field is separated into a first HARQ SIG and a second HARQ SIG,

wherein the first HARQ SIG includes information for full HARQ PPDU transmission,

wherein the second HARQ SIG includes the allocation information for HARQ burst, and

wherein the first HARQ SIG is located before a HARQ-STF (Short Training Field) and a HARQ-LTF (Long Training Field), and wherein the second HARQ SIG is located after the HARQ-STF and a HARQ-LTF.

2. The method of claim 1 , wherein, based on the HARQ PPDU having a MU (multi-user) format, the multiple HARQ bursts are provided to multiple STAs in a frequency domain through multiple channels, and a MCS (modulation and coding scheme) is independently configured per HARQ burst.

3. The method of claim 2 , wherein the second HARQ SIG for transmitting the allocation information for HARQ burst is transmitted individually for each of the multiple channels or transmitted to all of the multiple channels as one field.

4. The method of claim 2 , wherein the allocation information for HARQ burst is categorized into first type information for HARQ bursts transmitted from odd numbered channels of the multiple channels and second type information for HARQ bursts transmitted from even numbered channels, and the first type information is repeated in the odd numbered channels, and the second type information is repeated in the even numbered channels.

5. The method of claim 1 , wherein, based on the HARQ PPDU having a SU (single user) format, the multiple HARQ bursts are multiplexed in a time domain, and the HARQ SIG field is independently provided for each HARQ burst.

6. The method of claim 5 , wherein each HARQ SIG field includes HARQ sequence indicating that a current field is HARQ SIG field and information indicating whether a current HARQ burst is the last HARQ burst.

7. A method for receiving a hybrid automatic repeat request (HARQ) physical protocol data unit (PPDU) by a station (STA) in a wireless local area network (WLAN) supporting HARQ process, the method comprising:

receiving a HARQ PPDU including allocation information for HARQ burst, which is unit data to which the HARQ process is applied, and multiple HARQ bursts; and

performing decoding for at least one of the multiple HARQ bursts based on the allocation information for HARQ burst,

wherein the HARQ PPDU includes a HARQ signaling (SIG) field of a physical layer,

wherein the allocation information for HARQ burst includes a STA ID for each of the multiple HARQ bursts, HARQ burst size information, HARQ process channel ID, and information indicating, in a toggle manner, whether a transmission is a new transmission or retransmission,

wherein the HARQ SIG field is separated into a firm HARQ SIG and a second HARQ SIG,

wherein the first HARQ SIG includes information for full HARQ PPDU transmission,

wherein the second HARQ SIG includes the allocation information for HARQ burst, and

wherein the first HARQ SIG is located before a HARQ-STF (Short Training Field) and a HARQ-LTF (Long Training Field), and wherein the second HARQ SIG is located after the HARQ-STF and a HARQ-LTF.

8. The method of claim 7 , wherein, based on the HARQ PPDU having a MU (multi-user) format, the multiple HARQ bursts are provided to multiple STAs in a frequency domain through multiple channels, and a MCS (modulation and coding scheme) is independently configured per HARQ burst.

9. The method of claim 8 , wherein the HARQ SIG field for transmitting the allocation information for HARQ burst is received individually for each of the multiple channels or received to all of the multiple channels as one field.

10. The method of claim 8 , wherein the allocation information for HARQ burst is categorized into first type information for HARQ bursts transmitted from odd numbered channels of the multiple channels and second type information for HARQ bursts transmitted from even numbered channels, and the first type information is repeated in the odd numbered channels, and the second type information is repeated in the even numbered channels.

11. The method of claim 7 , wherein, based on the HARQ PPDU having a SU (single user) format, the multiple HARQ bursts are multiplexed in a time domain, and HARQ SIG field is independently provided for each HARQ burst.

12. The method of claim 11 , wherein each HARQ SIG field includes HARQ sequence indicating that a current field is HARQ SIG field and information indicating whether a current HARQ burst is the last HARQ burst.

13. A station (STA) for transmitting a hybrid automatic repeat request (HARQ) physical protocol data unit (PPDU) in a wireless local area network (WLAN) supporting HARQ process, the station (STA) comprising:

a transmitter;

at least one processors; and

at least one computer-readable memory storing instructions that, based on being executed by the at least one processor, control the STA to perform operations comprising:

generating a HARQ PPDU including allocation information for HARQ burst, which is unit data to which the HARQ process is applied, and multiple HARQ bursts; and

transmit through the transmitter, transmitting the HARQ PPDU,

wherein the HARQ PPDU includes a HARQ signaling (SIG) field of a physical layer,

wherein the allocation information for HARQ burst includes a STA ID for each of the multiple HARQ bursts, HARQ burst size information, HARQ process channel ID, and information indicating, in a toggle manner, whether a transmission is a new transmission or retransmission,

wherein the HARQ SIG field is separated into a first HARQ SIG and a second HARQ SIG,

wherein the first HARQ includes information for full HARQ PPDU transmission,

wherein the second HARQ SIG includes the allocation information for HARQ burst, and

wherein the first HARQ SIG is located before a HARQ-STF (Short Training Field) and a HARQ-LTF (Long Training Field), and wherein the second HARQ SIG is located after the HARQ-STF and a HARQ-LTF.

14. A station (STA) for receiving a hybrid automatic repeat request (HARQ) physical protocol data unit (PPDU) in a wireless local area network (WLAN) supporting HARQ process, the station (STA) comprising:

a receiver;

at least one processor; and

at least one computer-readable memory storing instructions that, based on being executed by the at least one processor, control the STA to perform operations comprising:

receiving, through the receiver, a HARQ PPDU including allocation information for HARQ burst, which is unit data to which the HARQ process is applied, and multiple HARQ bursts; and

performing decoding for at least one of the multiple HARQ bursts based on the allocation information for HARQ burst,

wherein the HARQ PPDU includes a HARQ signaling (SIG) field of a physical layer,

wherein the allocation information for HARQ burst includes a STA ID for each of the multiple HARQ bursts, HARQ burst size information, HARQ process channel ID, and information indicating; in a toggle manner, whether a transmission is a new transmission or retransmission,

wherein the HARQ SIG field is separated into a first HARQ SIG and a second HARQ SIG,

wherein the first HARQ SIG includes information for full HARQ PPDU transmission,

wherein the second HARQ SIG includes the allocation information for HARQ burst, and

wherein the first HARQ SIG is located before a HARQ-STF (Short Training Field) and a HARQ-LTF (Long Training Field) and wherein the second HARQ SIG is located after the HARQ-STF and a HARQ-LTF.