Method and apparatus for transmitting or receiving based on distributed resource unit tone plan in wireless LAN system
A method and an apparatus for transmitting or receiving based on a distributed resource unit tone plan in a WLAN system are disclosed. A method according to an embodiment of the present disclosure may include generating, by a first station (STA), a physical layer protocol data unit (PPDU) including at least one field; and transmitting, by the first STA, the PPDU to at least one second STA on a bandwidth including a 20 MHz channel. Here, the at least one field may be transmitted on at least one distributed resource unit (DRU).
1 . A method comprising:
generating, by a first station (STA), a physical layer protocol data unit (PPDU); and
transmitting, by the first STA, the PPDU to at least one second STA in a 20 MHz bandwidth,
wherein nine 26-tone distributed resource units (DRUs) are defined for the PPDU,
wherein each of the nine 26-tone DRUs comprises a plurality of data tones and two pilot tones, and
wherein an interval between a lowest tone index for the plurality of data tones and a lowest tone index for the two pilot tones is different for each of the nine 26-tone DRUs.
2 . The method of claim 1 , wherein:
the interval is defined as a number of tones being a multiple of 9.
3 . The method of claim 1 , wherein:
for the nine 26-tone DRUs, the interval is being defined as nine times A tones, where A is an integer,
a value of A for a 1st 26-tone DRU is p1,
a value of A for a 2nd 26-tone DRU is p2,
a value of A for a 3rd 26-tone DRU is p3,
a value of A for a 4th 26-tone DRU is p4,
a value of A for a 5th 26-tone DRU is p5,
a value of A for a 6th 26-tone DRU is p6,
a value of A for a 7th 26-tone DRU is p7,
a value of A for a 8th 26-tone DRU is p8,
a value of A for a 9th 26-tone DRU is p9, and
p1, p2, p3, p4, p5, p6, p7, p8, and p9 are an integer value greater than or equal to 1.
4 . The method of claim 3 , wherein:
(p5-p1) is-(p5-p9), (p5-p2) is-(p5-p8), (p5-p3) is-(p5-p7), and (p5-p4) is-(p5-p6).
5 . The method of claim 1 , wherein:
for the nine 26-tone DRUs,
a 1st 26-tone DRU includes tones of tone indexes [−121:9:−13] and [5:9:113],
a 2nd 26-tone DRU includes tones of tone indexes [−120:9:−12] and [6:9:114],
a 3rd 26-tone DRU includes tones of tone indexes [−119:9:−11] and [7:9:115],
a 4th 26-tone DRU includes tones of tone indexes [−118:9:−10] and [8:9:116],
a 5th 26-tone DRU includes tones of tone indexes [−117:9:−9] and [9:9:117],
a 6th 26-tone DRU includes tones of tone indexes [−116:9:−8] and [10:9:118],
a 7th 26-tone DRU includes tones of tone indexes [−115:9:−7] and [11:9:119],
a 8th 26-tone DRU includes tones of tone indexes [−114:9:−6] and [12:9:120],
a 9th 26-tone DRU includes tones of tone indexes [−113:9:−5] and [13:9:121],
wherein a tone index [x:y:z] is a tone index of tones selected in a y tone unit from a tone of a x index to a tone of a z index.
6 . The method of claim 1 , wherein:
at least one 52-tone DRU is defined for a transmission of the PPDU, and
for the at least one 52-tone DRU, pilot tone indices for a 52-tone DRU are defined as a combination of pilot tone indices for two 26-tone DRUs for configuring the 52-tone DRU.
7 . The method of claim 6 , wherein:
at least one 106-tone DRU is defined for a transmission of the PPDU, and
for the at least one 106-tone DRU, pilot tone indices for a 106-tone DRU are defined based one pilot tone indices for two 52-tone DRUs for configuring the 106-tone DRU.
8 . The method of claim 1 , wherein:
at least one DRU to be applied to the PPDU is indicated based on RU allocation information included in a trigger frame triggering a transmission of the PPDU.
9 . The method of claim 1 , wherein:
based on a set of subcarrier indexes included in a DRU for a x MHz channel of a y MHz bandwidth being indicated as S_x_y,
a 1st S_20_40=S_20_20−128,
a 2nd S_20_40=S_20_20+128.
10 . The method of claim 9 , wherein:
a 1st S_20_80=the 1st S_20_40−256,
a 2nd S_20_80=the 2nd S_20_40−256,
a 3rd S_20_80=the 1st S_20_40+256,
a 4th S_20_80=the 2nd S_20_40+256.
11 . The method of claim 10 , wherein:
a 1st S_20_160=the 1st S_20_80-512,
a 2nd S_20_160=the 2nd S_20_80-512,
a 3rd S_20_160=the 3rd S_20_80-512,
a 4th S_20_160=the 4th S_20_80-512,
a 5th S_20_160=the 1st S_20_80+512,
a 6th S_20_160=the 2nd S_20_80+512,
a 7th S_20_160=the 3rd S_20_80+512,
a 8th S_20_160=the 4th S_20_80+512.
12 . The method of claim 11 , wherein:
a 1st S_20_320=the 1st S_20_160-1024,
a 2nd S_20_320=the 2nd S_20_160-1024,
a 3rd S_20_320=the 3rd S_20_160-1024,
a 4th S_20_320=the 4th S_20_160-1024,
a 5th S_20_320=the 5th S_20_160-1024,
a 6th S_20_320=the 6th S_20_160-1024,
a 7th S_20_320=the 7th S_20_160-1024,
a 8th S_20_320=the 8th S_20_160-1024,
a 9th S_20_320=the 1st S_20_160+1024,
a 10th S_20_320=the 2nd S_20_160+1024,
a 11th S_20_320=the 3rd S_20_160+1024,
a 12th S_20_320=the 4th S_20_160+1024,
a 13th S_20_320=the 5th S_20_160+1024,
a 14th S_20_320=the 6th S_20_160+1024,
a 15th S_20_320=the 7th S_20_160+1024,
a 16th S_20_320=the 8th S_20_160+1024.
13 . The method of claim 12 , wherein:
a 1st S_20_640=the 1st S_20_320-2048,
a 2nd S_20_640=the 2nd S_20_320-2048,
a 3rd S_20_640=the 3rd S_20_320-2048,
a 4th S_20_640=the 4th S_20_320-2048,
a 5th S_20_640=the 5th S_20_320-2048,
a 6th S_20_640=the 6th S_20_320-2048,
a 7th S_20_640=the 7th S_20_320-2048,
a 8th S_20_640=the 8th S_20_320-2048,
a 9th S_20_640=the 9th S_20_320-2048,
a 10th S_20_640=the 10th S_20_320-2048,
a 11th S_20_640=the 11th S_20_320-2048,
a 12th S_20_640=the 12th S_20_320-2048,
a 13th S_20_640=the 13th S_20_320-2048,
a 14th S_20_640=the 14th S_20_320-2048,
a 15th S_20_640=the 15th S_20_320-2048,
a 16th S_20_640=the 16th S_20_320-2048,
a 17th S_20_640=the 1st S_20_320+2048,
a 18th S_20_640=the 2nd S_20_320+2048,
a 19th S_20_640=the 3rd S_20_320+2048,
a 20th S_20_640=the 4th S_20_320+2048,
a 21th S_20_640=the 5th S_20_320+2048,
a 22th S_20_640=the 6th S_20_320+2048,
a 23th S_20_640=the 7th S_20_320+2048,
a 24th S_20_640=the 8th S_20_320+2048,
a 25th S_20_640=the 9th S_20_320+2048,
a 26th S_20_640=the 10th S_20_320+2048,
a 27th S_20_640=the 11th S_20_320+2048,
a 28th S_20_640=the 12th S_20_320+2048,
a 29th S_20_640=the 13th S_20_320+2048,
a 30th S_20_640=the 14th S_20_320+2048,
a 31th S_20_640=the 15th S_20_320+2048,
a 32th S_20_640=the 16th S_20_320+2048.
14 . The method of claim 12 , wherein:
an additional tone shift value is applied for each of the 1st S_20_40 and the 2nd S_20_40.
15 . The method of claim 11 , wherein:
a 1st S_20_480=the 1st S_20_160-2048,
a 2nd S_20_480=the 2nd S_20_160-2048,
a 3rd S_20_480=the 3rd S_20_160-2048,
a 4th S_20_480=the 4th S_20_160-2048,
a 5th S_20_480=the 5th S_20_160-2048,
a 6th S_20_480=the 6th S_20_160-2048,
a 7th S_20_480=the 7th S_20_160-2048,
a 8th S_20_480=the 8th S_20_160-2048,
a 9th S_20_480=the 1st S_20_160,
a 10th S_20_480=the 2nd S_20_160,
a 11th S_20_480=the 3rd S_20_160,
a 12th S_20_480=the 4th S_20_160,
a 13th S_20_480=the 5th S_20_160,
a 14th S_20_480=the 6th S_20_160,
a 15th S_20_480=the 7th S_20_160,
a 16th S_20_480=the 8th S_20_160,
a 17th S_20_480=the 1st S_20_160+2048,
a 18th S_20_480=the 2nd S_20_160+2048,
a 19th S_20_480=the 3rd S_20_160+2048,
a 20th S_20_480=the 4th S_20_160+2048,
a 21th S_20_480=the 5th S_20_160+2048,
a 22th S_20_480=the 6th S_20_160+2048,
a 23th S_20_480=the 7th S_20_160+2048,
a 24th S_20_480=the 8th S_20 160+2048.
16 . The method of claim 10 , wherein:
a 1st S_20_240=the 1st S_20_80-1024,
a 2nd S_20_240=the 2nd S_20_80-1024,
a 3rd S_20_240=the 3rd S_20_80-1024,
a 4th S_20_240=the 4th S_20_80-1024,
a 5th S_20_240=the 1st S_20_80,
a 6th S_20_240=the 2nd S_20_80,
a 7th S_20_240=the 3rd S_20_80,
a 8th S_20_240=the 4th S_20_80,
a 9th S_20_240=the 1st S_20_80+1024,
a 10th S_20_240=the 2nd S_20_80+1024,
a 11th S_20_240=the 3rd S_20_80+1024,
a 12th S_20_240=the 4th S_20_80+1024.
17 . An apparatus comprising:
at least one transceiver; and
at least one processor connected to the at least one transceiver,
wherein the at least one processor is configured to:
generate a physical layer protocol data unit (PPDU); and
transmit, through the at least one transceiver, the PPDU to at least one second station (STA) in a 20 MHz bandwidth,
wherein nine 26-tone distributed resource units (DRUs) are defined for the PPDU,
wherein each of the nine 26-tone DRUs comprises a plurality of data tones and two pilot tones, and
wherein an interval between a lowest tone index for the plurality of data tones and a lowest tone index for the two pilot tones is different for each of the nine 26-tone DRUs.
18 . An apparatus comprising:
at least one transceiver; and
at least one processor connected to the at least one transceiver,
wherein the at least one processor is configured to:
receive, through the at least one transceiver, a physical layer protocol data unit (PPDU) from a first station (STA) in a 20 MHz bandwidth; and
process the PPDU,
wherein nine 26-tone distributed resource units (DRUs) are defined for the PPDU,
wherein each of the nine 26-tone DRUs comprises a plurality of data tones and two pilot tones, and
wherein an interval between a lowest tone index for the plurality of data tones and a lowest tone index for the two pilot tones is different for each of the nine 26-tone DRUs.