Configuration of trigger frame
The present specification proposes a method for configuring a trigger frame that can be applied to a next-generation Wireless LAN (WLAN) system and an apparatus using the method. As an example, the trigger frame of the present specification may set a bandwidth for a trigger-based (TB) PPDU of up to 320 MHz. As another example, the trigger frame of the present specification may set the format of the TB PPDU transmitted through a primary bandwidth. As another example, the trigger frame of the present specification may trigger an aggregated PPDU (A-PPDU).
1. A method in a Wireless Local Area Network (WLAN), the method comprising:
receiving, by a station (STA), a trigger frame from an access point (AP),
wherein the trigger frame includes a common info field,
wherein the common information field includes a subfield having a size of 1 bit,
wherein the subfield is positioned in a 55 th bit of the common information field; and
in response to the trigger frame, transmitting, by the STA to the AP, a response signal configured based on the trigger frame,
wherein based on the subfield having a size of 1 bit having a first value, the response signal is transmitted in an Extreme High Throughput (EHT) trigger-based physical protocol data unit (TB PPDU) through a primary channel,
wherein the EHT TB PPDU includes a first legacy signal (L-SIG), a first repeated legacy signal (RL-SIG) in which the first L-SIG is repeated, and a universal signal (U-SIG) including control information for the EHT TB PPDU, wherein the U-SIG is contiguous to the first RL-SIG in the EHT TB PPDU and includes a 3-bit identifier including 3-bit information related to a physical (PHY) version of the EHT TB PPDU,
wherein based on the subfield having a size of 1 bit having a second value, the response signal is transmitted in a High Efficiency (HE) TB PPDU through the primary channel,
wherein the HE TB PPDU includes a second legacy signal (L-SIG), a second repeated legacy signal (RL-SIG) in which the second L-SIG is repeated, and a HE signal-A (HE-SIG-A) including control information for the HE TB PPDU, wherein the HE-SIG-A is contiguous to the second RL-SIG in the HE TB PPDU, and
wherein a bandwidth of the primary channel is 160 MHz or 80 MHz, and an uplink bandwidth configured for the STA is 320 MHz or 160 MHz, respectively.
2. The method of claim 1 , wherein the first value is zero (0) and the second value is one (1).
3. The method of claim 1 , wherein a first bit of the common information field is denoted by B0 in the common information field, and the subfield having a size of 1 bit is denoted by B54 in the common information field.
4. The method of claim 1 , wherein the 3-bit identifier has a pre-defined value indicating that the PHY version is EHT.
5. A station (STA) in a Wireless Local Area Network (WLAN), the STA comprising:
a memory;
a transceiver; and
a processor operatively coupled to the memory and the transceiver,
wherein the process is configured to:
receive, from an access point (AP), a trigger frame,
wherein the trigger frame includes a common info field,
wherein the common information field includes a subfield having a size of 1 bit,
wherein the subfield is positioned in a 55 th bit of the common information field; and
in response to the trigger frame, transmit, to the AP, an uplink signal configured based on the trigger frame,
wherein based on the subfield having a size of 1 bit having a first value, the uplink signal is transmitted in an Extreme High Throughput (EHT) trigger-based physical protocol data unit (TB PPDU) through a primary channel,
wherein the EHT TB PPDU includes a first legacy signal (L-SIG), a first repeated legacy signal (RL-SIG) in which the first L-SIG is repeated, and a universal signal (U-SIG) including control information for the EHT TB PPDU,
wherein the U-SIG is contiguous to the first RL-SIG in the EHT TB PPDU and includes a 3-bit identifier including 3-bit information related to a physical (PHY) version of the EHT TB PPDU,
wherein based on the subfield having a size of 1 bit having a second value, the response signal is transmitted in a High Efficiency (HE) TB PPDU through the primary channel,
wherein the HE TB PPDU includes a second legacy signal (L-SIG), a second repeated legacy signal (RL-SIG) in which the second L-SIG is repeated, and a HE signal-A (HE-SIG-A) including control information for the HE TB PPDU, wherein the HE-SIG-A is contiguous to the second RL-SIG in the HE TB PPDU, and
wherein a bandwidth of the primary channel is 160 MHz or 80 MHz, and an uplink bandwidth configured for the STA is 320 MHz or 160 MHz, respectively.
6. A method in a Wireless Local Area Network (WLAN), the method comprising:
transmitting, by an access point (AP), a trigger frame to a station (STA),
wherein the trigger frame includes a common info field,
wherein the common information field includes a subfield having a size of 1 bit,
wherein the subfield is positioned in a 55 th bit of the common information field; and
in response to the trigger frame, receiving, by AP from the STA, a response signal configured based on the trigger frame,
wherein based on the subfield having a size of 1 bit having a first value, the response signal is received in an Extreme High Throughput (EHT) trigger-based physical protocol data unit (TB PPDU) through a primary channel,
wherein the EHT TB PPDU includes a first legacy signal (L-SIG), a first repeated legacy signal (RL-SIG) in which the first L-SIG is repeated, and a universal signal (U-SIG) including control information for the EHT TB PPDU,
wherein the U-SIG is contiguous to the first RL-SIG in the EHT TB PPDU and includes a 3-bit identifier including 3-bit information related to a physical (PHY) version of the EHT TB PPDU,
wherein based on the subfield having a size of 1 bit having a second value, the response signal is transmitted in a High Efficiency (HE) TB PPDU through the primary channel,
wherein the HE TB PPDU includes a second legacy signal (L-SIG), a second repeated legacy signal (RL-SIG) in which the second L-SIG is repeated, and a HE signal-A (HE-SIG-A) including control information for the HE TB PPDU, wherein the HE-SIG-A is contiguous to the second RL-SIG in the HE TB PPDU, and
wherein a bandwidth of the primary channel is 160 MHz or 80 MHz, and an uplink bandwidth configured for the STA is 320 MHz or 160 MHz, respectively.
7. The method of claim 6 , wherein the first value is zero (0) and the second value is one (1).
8. The method of claim 6 , wherein a first bit of the common information field is denoted by B0 in the common information field, and the subfield having a size of 1 bit is denoted by B54 in the common information field.
9. The method of claim 6 , wherein the 3-bit identifier has a pre-defined value indicating that the PHY version is EHT.