Granted Patent B2

US 12,355,604 · App. 18/538,486 · Granted Jul 8, 2025

Inventors: Eunsung Park (Seoul, KR); Jinmin Kim (Seoul, KR); Dongguk Lim (Seoul, KR); Jinsoo Choi (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04L27/2621H04L27/2618H04W84/12

Abstract

Claims (368)

1. A method for transmitting a Physical Protocol Data Unit (PPDU) in a wireless LAN system, the method comprising:

generating, by a transmitting device, the PPDU, wherein the PPDU includes a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF) and a data field; and

transmitting, by the transmitting device, the PPDU to a receiving device,

wherein the L-STF and the L-LTF are generated by applying a first phase rotation value for a 320 MHz band, and

wherein the first phase rotation value is given as follows based on a subcarrier index k from −512 to 511:

subcarrier

⁢

index

⁢

k

=

{

1

,

k

<

-

448

-

1

,

-

448

≤

k

<

-

256

1

,

-

256

≤

k

<

-

192

-

1

,

-

192

≤

k

<

0

-

1

,

0

≤

k

<

64

1

,

64

≤

k

<

256

-

1

,

256

≤

k

<

320

1

,

k

≥

320

.

2. The method of claim 1 ,

wherein the first phase rotation value is obtained based on a second phase rotation value and a third phase rotation value,

wherein the second phase rotation value is a phase rotation value obtained by repeating a phase rotation value that is defined for an 80 MHz band in an 802.11ax system,

wherein the third phase rotation value is a phase rotation value being defined in 80 MHz band units in the 320 MHz band based on optimal PAPRs of the L-STF and the L-LTF,

wherein the second rotation phase value is [1 −1 −1 −1 1 −1 −1 −1 1 −1 −1 −1 1 −1 −1 −1],

wherein, among the second rotation phase value, a first value 1 is applied to subcarriers having subcarrier indexes from −512 to −449,

wherein, among the second rotation phase value, a second value −1 is applied to subcarriers having subcarrier indexes from −448 to −385,

wherein, among the second rotation phase value, a third value −1 is applied to subcarriers having subcarrier indexes from −384 to −321,

wherein, among the second rotation phase value, a fourth value −1 is applied to subcarriers having subcarrier indexes from −320 to −257,

wherein, among the second rotation phase value, a fifth value 1 is applied to subcarriers having subcarrier indexes from −256 to −193,

wherein, among the second rotation phase value, a sixth value −1 is applied to subcarriers having subcarrier indexes from −192 to −129,

wherein, among the second rotation phase value, a seventh value −1 is applied to subcarriers having subcarrier indexes from −128 to −65,

wherein, among the second rotation phase value, an eighth value −1 is applied to subcarriers having subcarrier indexes from −64 to −1,

wherein, among the second rotation phase value, a ninth value 1 is applied to subcarriers having subcarrier indexes from 0 to 63,

wherein, among the second rotation phase value, a tenth value −1 is applied to subcarriers having subcarrier indexes from 64 to 127,

wherein, among the second rotation phase value, an eleventh value −1 is applied to subcarriers having subcarrier indexes from 128 to 191,

wherein, among the second rotation phase value, a twelfth value −1 is applied to subcarriers having subcarrier indexes from 192 to 255,

wherein, among the second rotation phase value, a thirteenth value 1 is applied to subcarriers having subcarrier indexes from 256 to 319,

wherein, among the second rotation phase value, a fourteenth value −1 is applied to subcarriers having subcarrier indexes from 320 to 383,

wherein, among the second rotation phase value, a fifteenth value −1 is applied to subcarriers having subcarrier indexes from 384 to 447, and

wherein, among the second rotation phase value, a sixteenth value −1 is applied to subcarriers having subcarrier indexes from 448 to 511.

3. The method of claim 2 , wherein the third phase rotation value is [1 1 −1 −1],

wherein, among the third rotation phase value, a first value 1 is applied to a first 80 MHz band within the 320 MHz band,

wherein, among the third rotation phase value, a second value 1 is applied to a second 80 MHz band within the 320 MHz band,

wherein, among the third rotation phase value, a third value −1 is applied to a third 80 MHz band within the 320 MHz band, and

wherein, among the third rotation phase value, a fourth value −1 is applied to a fourth 80 MHz band within the 320 MHz band.

4. The method of claim 3 , wherein the first phase rotation value is obtained based on a multiplication of the second phase rotation value and the third phase rotation value.

5. The method of claim 1 , wherein a bandwidth of the PPDU is the 320 MHz band having 80 MHz punctured.

6. The method of claim 5 , wherein the first phase rotation value is obtained based on a preamble puncturing pattern,

wherein the preamble puncturing pattern is a band pattern having punctured at least one 80 MHz band, among all 80 MHz bands excluding a primary 80 MHz band within the 320 MHz band.

7. A transmitting device for transmitting a Physical Protocol Data Unit (PPDU) in a wireless LAN system, the transmitting device comprising:

a memory;

a transceiver; and

a processor being operatively coupled to the memory and the transceiver,

wherein the processor is configured to:

generate the PPDU, wherein the PPDU includes a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF) and a data field, and

transmit the PPDU to a receiving device,

wherein the L-STF and the L-LTF are generated by applying a first phase rotation value for a 320 MHz band, and

wherein the first phase rotation value is given as follows based on a subcarrier index k from −512 to 511:

subcarrier

⁢

index

⁢

k

=

{

1

,

k

<

-

448

-

1

,

-

448

≤

k

<

-

256

1

,

-

256

≤

k

<

-

192

-

1

,

-

192

≤

k

<

0

-

1

,

0

≤

k

<

64

1

,

64

≤

k

<

256

-

1

,

256

≤

k

<

320

1

,

k

≥

320

.

8. The transmitting device of claim 7 ,

wherein the first phase rotation value is obtained based on a second phase rotation value and a third phase rotation value,

wherein the second phase rotation value is a phase rotation value obtained by repeating a phase rotation value that is defined for an 80 MHz band in an 802.11ax system,

wherein the third phase rotation value is a phase rotation value being defined in 80 MHz band units in the 320 MHz band based on optimal PAPRs of the L-STF and the L-LTF,

wherein the second rotation phase value is [1 −1 −1 −1 1 −1 −1 −1 1 −1 −1 −1 1 −1 −1 −1],

wherein, among the second rotation phase value, a first value 1 is applied to subcarriers having subcarrier indexes from −512 to −449,

wherein, among the second rotation phase value, a second value −1 is applied to subcarriers having subcarrier indexes from −448 to −385,

wherein, among the second rotation phase value, a third value −1 is applied to subcarriers having subcarrier indexes from −384 to −321,

wherein, among the second rotation phase value, a fourth value −1 is applied to subcarriers having subcarrier indexes from −320 to −257,

wherein, among the second rotation phase value, a fifth value 1 is applied to subcarriers having subcarrier indexes from −256 to −193,

wherein, among the second rotation phase value, a sixth value −1 is applied to subcarriers having subcarrier indexes from −192 to −129,

wherein, among the second rotation phase value, a seventh value −1 is applied to subcarriers having subcarrier indexes from −128 to −65,

wherein, among the second rotation phase value, an eighth value −1 is applied to subcarriers having subcarrier indexes from −64 to −1,

wherein, among the second rotation phase value, a ninth value 1 is applied to subcarriers having subcarrier indexes from 0 to 63,

wherein, among the second rotation phase value, a tenth value −1 is applied to subcarriers having subcarrier indexes from 64 to 127,

wherein, among the second rotation phase value, an eleventh value −1 is applied to subcarriers having subcarrier indexes from 128 to 191,

wherein, among the second rotation phase value, a twelfth value −1 is applied to subcarriers having subcarrier indexes from 192 to 255,

wherein, among the second rotation phase value, a thirteenth value 1 is applied to subcarriers having subcarrier indexes from 256 to 319,

wherein, among the second rotation phase value, a fourteenth value −1 is applied to subcarriers having subcarrier indexes from 320 to 383,

wherein, among the second rotation phase value, a fifteenth value −1 is applied to subcarriers having subcarrier indexes from 384 to 447, and

wherein, among the second rotation phase value, a sixteenth value −1 is applied to subcarriers having subcarrier indexes from 448 to 511.

9. The transmitting device of claim 8 , wherein the third phase rotation value is [1 1 −1 −1],

wherein, among the third rotation phase value, a first value 1 is applied to a first 80 MHz band within the 320 MHz band,

wherein, among the third rotation phase value, a second value 1 is applied to a second 80 MHz band within the 320 MHz band,

wherein, among the third rotation phase value, a third value −1 is applied to a third 80 MHz band within the 320 MHz band, and

wherein, among the third rotation phase value, a fourth value −1 is applied to a fourth 80 MHz band within the 320 MHz band.

10. The transmitting device of claim 9 , wherein the first phase rotation value is obtained based on a multiplication of the second phase rotation value and the third phase rotation value.

11. The transmitting device of claim 7 , wherein a bandwidth of the PPDU is the 320 MHz band having 80 MHz punctured.

12. The transmitting device of claim 11 , wherein the first phase rotation value is obtained based on a preamble puncturing pattern,

wherein the preamble puncturing pattern is a band pattern having punctured at least one 80 MHz band, among all 80 MHz bands excluding a primary 80 MHz band within the 320 MHz band.

13. A method for receiving a Physical Protocol Data Unit (PPDU) in a wireless LAN system, the method comprising:

receiving, by a receiving device, the PPDU from a transmitting device, wherein the PPDU includes a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF) and a data field; and

decoding, by the receiving device, the PPDU,

wherein the L-STF and the L-LTF are preambles generated by applying a first phase rotation value for a 320 MHz band, and

wherein the first phase rotation value is given as follows based on a subcarrier index k from −512 to 511:

subcarrier

⁢

index

⁢

k

=

{

1

,

k

<

-

448

-

1

,

-

448

≤

k

<

-

256

1

,

-

256

≤

k

<

-

192

-

1

,

-

192

≤

k

<

0

-

1

,

0

≤

k

<

64

1

,

64

≤

k

<

256

-

1

,

256

≤

k

<

320

1

,

k

≥

320

.

14. A receiving device for receiving a Physical Protocol Data Unit (PPDU) in a wireless LAN system, the receiving device comprising:

a memory;

a transceiver; and

a processor being operatively coupled to the memory and the transceiver,

wherein the processor is configured to:

receive the PPDU from a transmitting device, wherein the PPDU includes a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF) and a data field; and

decode the PPDU,

wherein the L-STF and the L-LTF are preambles generated by applying a first phase rotation value for a 320 MHz band, and

wherein the first phase rotation value is given as follows based on a subcarrier index k from −512 to 511:

subcarrier

⁢

index

⁢

k

=

{

1

,

k

<

-

448

-

1

,

-

448

≤

k

<

-

256

1

,

-

256

≤

k

<

-

192

-

1

,

-

192

≤

k

<

0

-

1

,

0

≤

k

<

64

1

,

64

≤

k

<

256

-

1

,

256

≤

k

<

320

1

,

k

≥

320

.

Assignments (1)

Priority Claims (2)

Continuity (3)

References Cited (17)