IP Library › Granted Patent US 12,166,613

Granted Patent B2

US 12,166,613 · App. 17/905,753 · Granted Dec 10, 2024

1X LTF sequence for 320 MHz

Inventors: Jinyoung Chun (Seoul, KR); Jinsoo Choi (Seoul, KR); Dongguk Lim (Seoul, KR); Eunsung Park (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04L27/2613 H04W84/12

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Patent No.: US 12,166,613
App. No.: 17/905,753
Granted: Dec 10, 2024
Kind: B2

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Abstract

In a wireless local area network (WLAN) system, an LTF sequence for 320 MHz or 160+160 MHz band transmission can be defined.

Claims (68)

1. A method performed by a transmitting station (STA), STA, in a wireless local area network, WLAN, system, the method comprising:

generating a physical protocol data unit, PPDU, wherein the PPDU includes a legacy signal, L-SIG, field, a repeated L-SIG field which is a repeat of the L-SIG field, and a universal signal, U-SIG, field, wherein a result of applying ‘modulo 3’ to a value of a length of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical, PHY, version identifier having a length of 3 bits and having a predefined value; and

transmitting the PPDU to a receiving STA through a 320 MHz band,

wherein the PPDU includes a long training field, LTF, signal,

wherein the LTF signal is generated based on an LTF sequence, and

wherein the LTF sequence is defined as follows,

{LTF 80 MHz_1st_1× , 0 23 , LTF 80 MHz_2nd_1× , 0 23 , LF 80 MHz_3rd_1× , 0 23 , LTF 80 MHz_4th_1× }

LTF 80 MHz_1st_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_2nd_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_3rd_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_4th_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_left_1× ={−1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, +0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 1, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, 0, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0}

LTF 80 MHz_right_1× ={0, 0, −1, 0, 0, 0, −1, 0, 0, 0, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 1, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, − 1 , 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, −1, 0, 0, 0, +1, 0, 0, 0, +1}

where 0 23 denotes 23 consecutive zeros.

2. The method of claim 1 , wherein the PPDU is transmitted through 1 to 8 streams.

3. The method of claim 1 , wherein the LTF sequence is mapped from a lowest tone having a tone index ‘−2036’ to a highest tone having a tone index ‘2036’.

4. The method of claim 1 , wherein the LTF sequence is a 1×LTF sequence.

5. The method of claim 1 , wherein the PPDU further includes an extremely high throughput signal (EHT-SIG) field.

6. A transmitting station, STA, used in a wireless local area network, WLAN, system, the transmitting STA comprising:

a transceiver transmitting and receiving a radio signal; and

a processor coupled to the transceiver, wherein the processor is adapted to:

generate a physical protocol data unit, PPDU, wherein the PPDU includes a legacy signal, L-SIG, field, a repeated L-SIG field which is a repeat of the L-SIG field, and a universal signal, U-SIG, field, wherein a result of applying ‘modulo 3’ to a value of a length of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical, PHY, version identifier having a length of 3 bits and having a predefined value; and

transmit the PPDU to a receiving STA through a 320 MHz band,

wherein the PPDU includes a long training field, LTF, signal,

wherein the LTF signal is generated based on an LTF sequence, and

wherein the LTF sequence is defined as follows,

{LTF 80 MHz_1st_1× , 0 23 , LTF 80 MHz_2nd_1× , 0 23 , LF 80 MHz_3rd_1× , 0 23 , LTF 80 MHz_4th_1× }

LTF 80 MHz_1st_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_2nd_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_3rd_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_4th_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

where 0 23 denotes 23 consecutive zeros.

7. The transmitting STA of claim 6 , wherein the PPDU is transmitted through 1 to 8 streams.

8. The transmitting STA of claim 6 , wherein the LTF sequence is mapped from a lowest tone having a tone index ‘−2036’ to a highest tone having a tone index ‘2036’.

9. The transmitting STA of claim 6 , wherein the LTF sequence is a 1×LTF sequence.

10. The transmitting STA of claim 6 , wherein the PPDU further includes an extremely high throughput signal (EHT-SIG) field.

11. A method performed by a receiving station, STA, of a wireless local area network, WLAN, system, the method comprising:

receiving a physical protocol data unit, PPDU, from a transmitting STA through a 320 MHz band, wherein the PPDU includes a legacy signal, L-SIG, field, a repeated L-SIG field which is a repeat of the L-SIG field, and a universal signal, U-SIG, field, wherein a result of applying ‘modulo 3’ to a value of a length of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical, PHY, version identifier having a length of 3 bits and having a predefined value; and

decoding the PPDU,

wherein the PPDU includes a long training field, LTF, signal,

wherein the LTF signal is generated based on an LTF sequence, and

wherein the LTF sequence is defined as follows,

{LTF 80 MHz_1st_1× , 0 23 , LTF 80 MHz_2nd_1× , 0 23 , LF 80 MHz_3rd_1× , 0 23 , LTF 80 MHz_4th_1× }

LTF 80 MHz_1st_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_2nd_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_3rd_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_4th_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

where 0 23 denotes 23 consecutive zeros.

12. A receiving station (STA), STA, used in a wireless local area network, WLAN, system, the receiving STA comprising:

a transceiver transmitting and receiving a radio signal; and

processor coupled to the transceiver, wherein the processor is adapted to:

receive a physical protocol data unit, PPDU, from a transmitting STA through a 320 MHz band, wherein the PPDU includes a legacy signal, L-SIG, field, a repeated L-SIG field which is a repeat of the L-SIG field, and a universal signal, U-SIG, field, wherein a result of applying ‘modulo 3’ to a value of a length of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical, PHY, version identifier having a length of 3 bits and having a predefined value

decode the PPDU,

wherein the PPDU includes a long training field, LTF, signal,

wherein the LTF signal is generated based on an LTF sequence, and

wherein the LTF sequence is defined as follows,

{LTF 80 MHz_1st_1× , 0 23 , LTF 80 MHz_2nd_1× , 0 23 , LF 80 MHz_3rd_1× , 0 23 , LTF 80 MHz_4th_1× }

LTF 80 MHz_1st_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_2nd_1× ={LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_3rd_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

LTF 80 MHz_4th_1× ={−LTF 80 MHz_left_1× , 0, LTF 80 MHz_right_1× }

where 0 23 denotes 23 consecutive zeros.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 6, 2022

From: CHUN, JINYOUNG; CHOI, JINSOO; LIM, DONGGUK; PARK, EUNSUNG

To: LG ELECTRONICS INC.

Reel/Frame 061001/0268 →

Priority Claims (4)

KR 10-2020-0029839 · Mar 10, 2020 · national

KR 10-2020-0056047 · May 11, 2020 · national

KR 10-2020-0063162 · May 26, 2020 · national

KR 10-2020-0075109 · Jun 19, 2020 · national

Continuity (1)

Related Publication 20230336391A1 · Oct 19, 2023

Cited By (1)

US 12,457,138