Method and device for configuring bandwidth field to indicate bandwidth of TB A-PPDU in wireless LAN system
The present disclosure proposes a method and device for configuring a bandwidth field to indicate a bandwidth of a TB A-PPDU in a wireless LAN system. Particularly, a reception STA receives a trigger frame from a transmission STA. The reception STA transmits a TB A-PPDU to the transmission STA through a 320 MHz band. The trigger frame includes a common information field and a special user information field. The common information field includes a first bandwidth field. The special user information field includes a second bandwidth field. The TB A-PPDU includes an HE TB PPDU for a primary 160 MHz channel and an EHT TB PPDU for a secondary 160 MHz channel.
1 . A method in a wireless local area network (WLAN) system, the method comprising:
receiving, by a receiving station (STA), a trigger frame from a transmitting STA; and
transmitting, by the receiving STA, a Trigger Based Aggregated-Physical Protocol Data Unit (TB A-PPDU) through a 320 MHz band to the transmitting STA,
wherein the trigger frame includes a common information field and a special user information field,
wherein the common information field includes a first bandwidth field, a HE/EHT P160 subfield and a Special User Info Field Present subfield,
wherein the special user information field includes a second bandwidth field,
wherein the TB A-PPDU includes a High Efficiency (HE) TB PPDU for a primary 160 MHz channel and an Extreme High Throughput (EHT) TB PPDU for a secondary 160 MHz channel,
wherein based on a value of the first bandwidth field being 2 and a value of the second bandwidth field being 0, the HE TB PPDU is transmitted through a primary 80 MHz channel within the primary 160 MHz channel, and the EHT TB PPDU is transmitted through a first 80 MHz channel within the secondary 160 MHz channel, and
wherein based on the receiving STA being an Release 1 (R1) EHT STA, the R1 EHT STA is allocated only within the primary 160 MHz channel and does not decode the special user information field even though the special user information field is present in the trigger frame based on a value of the Special User Info Field Present subfield.
2 . The method of claim 1 , wherein based on the value of the first bandwidth field being 2 and the value of the second bandwidth field being 0,
a secondary 80 MHz channel within the primary 160 MHz channel is punctured, a second 80 MHz channel within the secondary 160 MHz channel is punctured, and the second 80 MHz channel is a remaining channel excluding the first 80 MHz channel within the secondary 160 MHz channel.
3 . The method of claim 1 , wherein based on the value of the first bandwidth field being 2 and the value of the second bandwidth field being 1,
the HE TB PPDU is transmitted through the primary 80 MHz channel within the primary 160 MHz channel, the EHT TB PPDU is transmitted through the secondary 160 MHz channel, and a secondary 80 MHz channel within the primary 160 MHz channel is punctured.
4 . The method of claim 1 , wherein based on the value of the first bandwidth field being 3 and the value of the second bandwidth field being 0,
the HE TB PPDU is transmitted through the primary 160 MHz channel, the EHT TB PPDU is transmitted through the first 80 MHz channel within the secondary 160 MHz channel, a second 80 MHz channel within the secondary 160 MHz channel is punctured, and the second 80 MHz channel is a remaining channel excluding the first 80 MHz channel within the secondary 160 MHz channel.
5 . The method of claim 1 , wherein based on the value of the first bandwidth field being 3 and the value of the second bandwidth field being 1,
the HE TB PPDU is transmitted through the primary 160 MHz channel, and the EHT TB PPDU is transmitted through the secondary 160 MHz channel.
6 . The method of claim 1 , wherein based on the value of the first bandwidth field being 3 and the value of the second bandwidth field being 2,
the HE TB PPDU is transmitted through the primary 160 MHz channel, the EHT TB PPDU is transmitted through the secondary 160 MHz channel, and the 320 MHz band is a 320-1 MHz band,
wherein the 320-1 MHz band relates to a 320 MHz band in which a primary 20 MHz channel is located within a lower 160 MHz portion of the 320-1 MHz band.
7 . The method of claim 1 , wherein based on the value of the first bandwidth field being 3 and the value of the second bandwidth field being 3,
the HE TB PPDU is transmitted through the primary 160 MHz channel, the EHT TB PPDU is transmitted through the secondary 160 MHz channel, and the 320 MHz band is a 320-2 MHz band,
wherein the 320-2 MHz band relates to a 320 MHz band in which a primary 20 MHz channel is located within an upper 160 MHz portion of the 320-2 MHz band.
8 . The method of claim 1 , wherein the common information field includes a HE/EHT P160 subfield and a Special User Info Field Present subfield,
wherein a value of the HE/EHT P160 subfield is set to 1, and a value of the special user information field presence subfield is set to 0.
9 . A receiving station (STA) in a wireless local area network (WLAN) system, the receiving STA comprising:
a memory;
a transceiver; and
a processor being operatively connected to the memory and the transceiver,
wherein the processor is configured to:
receive a trigger frame from a transmitting STA; and
transmit a Trigger Based Aggregated-Physical Protocol Data Unit (TB A-PPDU) through a 320 MHz band to the transmitting STA,
wherein the trigger frame includes a common information field and a special user information field,
wherein the common information field includes a first bandwidth field, a HE/EHT P160 subfield and a Special User Info Field Present subfield,
wherein the special user information field includes a second bandwidth field,
wherein the TB A-PPDU includes a High Efficiency (HE) TB PPDU for a primary 160 MHz channel and an Extreme High Throughput (EHT) TB PPDU for a secondary 160 MHz channel, and
wherein based on a value of the first bandwidth field being 2 and a value of the second bandwidth field being 0, the HE TB PPDU is transmitted through a primary 80 MHz channel within the primary 160 MHz channel, and the EHT TB PPDU is transmitted through a first 80 MHz channel within the secondary 160 MHz channel, and
wherein based on the receiving STA being an Release 1 (R1) EHT STA, the R1 EHT STA is allocated only within the primary 160 MHz channel and does not decode the special user information field even though the special user information field is present in the trigger frame based on a value of the Special User Info Field Present subfield.
10 . A method in a wireless local area network (WLAN) system, the method comprising:
transmitting, by a transmitting station (STA), a trigger frame to a receiving STA; and
receiving, by the transmitting STA, a Trigger Based Aggregated-Physical Protocol Data Unit (TB A-PPDU) from the receiving STA through a 320 MHz band,
wherein the trigger frame includes a common information field and a special user information field,
wherein the common information field includes a first bandwidth field, HE/EHT P160 subfield and a Special User Info Field Present subfield,
wherein the special user information field includes a second bandwidth field,
wherein the TB A-PPDU includes a High Efficiency (HE) TB PPDU for a primary 160 MHz channel and an Extreme High Throughput (EHT) TB PPDU for a secondary 160 MHz channel, and
wherein based on a value of the first bandwidth field being 2 and a value of the second bandwidth field being 0, the HE TB PPDU is transmitted through a primary 80 MHz channel within the primary 160 MHz channel, and the EHT TB PPDU is transmitted through a first 80 MHz channel within the secondary 160 MHz channel, and
wherein based on the receiving STA being an Release 1 (R1) EHT STA, the R1 EHT STA is allocated only within the primary 160 MHz channel and does not decode the special user information field even though the special user information field is present in the trigger frame based on a value of the Special User Info Field Present subfield.
11 . The method of claim 10 , wherein based on the value of the first bandwidth field being 2 and the value of the second bandwidth field being 0,
a secondary 80 MHz channel within the primary 160 MHz channel is punctured, a second 80 MHz channel within the secondary 160 MHz channel is punctured, and the second 80 MHz channel is a remaining channel excluding the first 80 MHz channel within the secondary 160 MHz channel.
12 . The method of claim 10 , wherein when based on the value of the first bandwidth field being 2 and the value of the second bandwidth field being 1,
the HE TB PPDU is transmitted through the primary 80 MHz channel within the primary 160 MHz channel, the EHT TB PPDU is transmitted through the secondary 160 MHz channel, and a secondary 80 MHz channel within the primary 160 MHz channel is punctured.
13 . The method of claim 10 , wherein based on the value of the first bandwidth field being 3 and the value of the second bandwidth field being 0,
the HE TB PPDU is transmitted through the primary 160 MHz channel, the EHT TB PPDU is transmitted through the first 80 MHz channel within the secondary 160 MHz channel, a second 80 MHz channel within the secondary 160 MHz channel is punctured, and the second 80 MHz channel is a remaining channel excluding the first 80 MHz channel within the secondary 160 MHz channel.
14 . The method of claim 10 , wherein based on the value of the first bandwidth field being 3 and the value of the second bandwidth field being 1,
the HE TB PPDU is transmitted through the primary 160 MHz channel, and the EHT TB PPDU is transmitted through the secondary 160 MHz channel.