Enhanced NDPA frame for sensing
The present specification proposes NDPA frame formats supported in a next generation wireless LAN system. According to one embodiment of the present specification, the NDPA frame formats may include common information for sensing. Here, the common information may be included in a special user information field. According to another embodiment of the present specification, the NDPA frame formats may use an existing NDPA frame format.
1. A method performed in a wireless local area network (WLAN) system, the method comprising:
transmitting, by a station (STA), a Null Data Packet Announcement (NDPA) frame,
wherein the NDPA frame includes a Sounding Dialog Token field related to a sensing measurement exchange,
wherein the NDPA frame includes a STA info field,
wherein the STA info field includes an Association Identifier (AID) field and a one-bit control field which is located in a thirty-second bit of the STA info field,
wherein the one-bit control field is denoted by ‘B 31 ’ in the STA info field,
wherein the NDPA frame includes a plurality of variants including a Sensing NDPA frame and a Ranging NDPA frame,
wherein the plurality of variants are distinguished based on two contiguous bits of the Sounding Dialog Token field, the AID field, and the one-bit control field,
wherein the two contiguous bits of the Sounding Dialog Token field have a same value for the Sensing NDPA frame and the Ranging NDPA frame,
wherein the STA info field further includes a measurement session identifier (ID) of the sensing measurement exchange; and
transmitting, by the STA, the null data packet (NDP) frame based on the NDPA frame.
2. The method of claim 1 , wherein the Sensing NDPA frame and the Ranging NDPA frame are distinguished based on the one-bit control field.
3. The method of claim 1 , wherein the Sounding Dialog Token field includes a Sounding Dialog Token number field which is contiguous to the two contiguous bits.
4. The method of claim 1 , wherein the two contiguous bits consist of a B 0 bit and a B 1 bit, and the B 0 bit is set to ‘1’ and the B 1 bit is set to ‘0’.
5. The method of claim 1 , wherein the plurality of variants include a very high throughput (VHT) NDPA frame, a high-Efficiency (HE) NDPA frame, an extremely high throughput (EHT) NDPA frame.
6. A station (STA) in a wireless local area network (WLAN) system, comprising:
a transceiver adapted to transmit and/or receive a wireless signal; and
a processor adapted to control the transceiver,
wherein the processor is further adapted to:
transmit a Null Data Packet Announcement (NDPA) frame,
wherein the NDPA frame includes a Sounding Dialog Token field related to a sensing measurement exchange, wherein the NDPA frame includes a STA info field,
wherein the STA info field includes an Association Identifier (AID) field and a one-bit control field which is located in a thirty-second bit of the STA info field,
wherein the one-bit control field is denoted by ‘B 31 ’ in the STA info field,
wherein the NDPA frame includes a plurality of variants including a Sensing NDPA frame and a Ranging NDPA frame, wherein the plurality of variants are distinguished based on two contiguous bits of the Sounding Dialog Token field, the AID field, and the one-bit control field,
wherein the two contiguous bits of the Sounding Dialog Token field have a same value for the Sensing NDPA frame and the Ranging NDPA frame,
wherein the STA info field further includes a measurement session identifier (ID) of the sensing measurement exchange; and
transmit the null data packet (NDP) frame based on the NDPA frame.
7. The STA of claim 6 , wherein the Sensing NDPA frame and the Ranging NDPA frame are distinguished based on the one-bit control field.
8. The STA of claim 6 , wherein the Sounding Dialog Token field includes a Sounding Dialog Token number field which is contiguous to the two contiguous bits.
9. The STA of claim 6 , wherein the two contiguous bits consist of a B 0 bit and a B 1 bit, and the B 0 bit is set to ‘1’ and the B 1 bit is set to ‘0’.
10. The STA of claim 6 , wherein the plurality of variants include a very high throughput (VHT) NDPA frame, a high-Efficiency (HE) NDPA frame, an extremely high throughput (EHT) NDPA frame.
11. A station (STA) in a wireless local area network (WLAN) system, comprising:
a transceiver adapted to transmit and/or receive a wireless signal; and
a processor adapted to control the transceiver,
wherein the processor is further adapted to:
receive a Null Data Packet Announcement (NDPA) frame,
wherein the NDPA frame includes a Sounding Dialog Token field related to a sensing measurement exchange, wherein the NDPA frame includes a STA info field,
wherein the STA info field includes an Association Identifier (AID) field and a one-bit control field which is located in a thirty-second bit of the STA info field,
wherein the one-bit control field is denoted by ‘B 31 ’ in the STA info field,
wherein the NDPA frame includes a plurality of variants including a Sensing NDPA frame and a Ranging NDPA frame, wherein the plurality of variants are distinguished based on two contiguous bits of the Sounding Dialog Token field, the AID field, and the one-bit control field,
wherein the two contiguous bits of the Sounding Dialog Token field have a same value for the Sensing NDPA frame and the Ranging NDPA frame,
wherein the STA info field further includes a measurement session identifier (ID) of the sensing measurement exchange; and
receive the null data packet (NDP) frame based on the NDPA frame.
12. The STA of claim 11 , wherein the Sensing NDPA frame and the Ranging NDPA frame are distinguished based on the one-bit control field.
13. The STA of claim 11 , wherein the Sounding Dialog Token field includes a Sounding Dialog Token number field which is contiguous to the two contiguous bits.
14. The STA of claim 11 , wherein the two contiguous bits consist of a B 0 bit and a B 1 bit, and the B 0 bit is set to ‘1’ and the B 1 bit is set to ‘0’.
15. The STA of claim 11 , wherein the plurality of variants include a very high throughput (VHT) NDPA frame, a high-Efficiency (HE) NDPA frame, an extremely high throughput (EHT) NDPA frame.