IP Library › Granted Patent US 11,817,984

Granted Patent B2

US 11,817,984 · App. 18/128,599 · Granted Nov 14, 2023

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 H04B7/0452 H04L1/0061 H04L27/2614 H04W84/12

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Quick Facts

Patent No.: US 11,817,984
App. No.: 18/128,599
Granted: Nov 14, 2023
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

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 (8855)

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

generating a long training field (LTF) signal,

wherein the LTF signal is based on an LTF sequence,

wherein the LTF signal is included in a physical protocol data unit (PPDU), transmitting the PPDU to a receiving STA through a 320 MHz band,

wherein the LTF sequence is defined as follows,

{LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x }

LTF 80MHz_1st_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_3rd_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF 80MHz_4th_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF

⁢

MHz

⁢

left

⁢

{

}

LTF

⁢

MHz

⁢

right

⁢

{

}

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 1x LTF sequence.

5. The method of claim 1 , wherein the PPDU further includes a U-SIG field and an 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 long training field (LTF) signal,

wherein the LTF signal is based on an LTF sequence,

wherein the LTF signal is included in a physical protocol data unit (PPDU),

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

wherein the LTF sequence is defined as follows,

{LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x }

LTF 80MHz_1st_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_3rd_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF 80MHz_4th_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF

⁢

MHz

⁢

left

⁢

{

}

LTF

⁢

MHz

⁢

right

⁢

{

}

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 1x LTF sequence.

10. The transmitting STA of claim 6 , wherein the PPDU further includes a U -SIG field and an 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 long training field (LTF) signal from a transmitting STA through a 320 MHz band,

wherein the LTF signal is based on an LTF sequence,

wherein the LTF signal is included in a physical protocol data unit (PPDU); and

decoding the PPDU,

wherein the LTF sequence is defined as follows,

{LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x }

LTF 80MHz_1st_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_3rd_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF 80MHz_4th_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF

⁢

MHz

⁢

left

⁢

{

}

LTF

⁢

MHz

⁢

right

⁢

{

}

where 0 23 denotes 23 consecutive zeros.

12. A receiving station (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 long training field (LTF) signal from a transmitting STA through a 320 MHz band,

wherein the LTF signal is based on an LTF sequence,

wherein the LTF signal is included in a physical protocol data unit (PPDU); and

decode the PPDU,

wherein the LTF sequence is defined as follows,

{LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x }

LTF 80MHz_1st_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x , 0, LTF 80MHz_right_1x }

LTF 80MHz_3rd_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF 80MHz_4th_1x ={−LTF 80MHz_left_1x , 0, −LTF 80MHz_right_1x }

LTF

⁢

MHz

⁢

left

⁢

{

}

LTF

⁢

MHz

⁢

right

⁢

{

}

where 0 23 denotes 23 consecutive zeros.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2023

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

To: LG ELECTRONICS INC.

Reel/Frame 063177/0831 →

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 (2)

Continuation 17905753

Related Publication 20230239187A1 · Jul 27, 2023

Cited By (2)

US 12,207,134 US 12,574,882