Enhanced sounding packet designs
This disclosure provides methods, devices and systems for generating enhanced sounding packets. Some implementations more specifically relate to sounding packet designs that support enhancements to wireless communication protocols associated with the Institute of Electrical and Electronics Engineers (IEEE) 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an enhanced null data packet announcement (NDPA) frame may be configurable to support multiple versions of the IEEE 802.11 standard. For example, the enhanced NDPA frame may be configured in accordance with a legacy or a non-legacy NDPA frame format. In some other implementations, the enhanced NDPA frame may include a subfield carrying information identifying a particular basic service set (BSS) which may be associated with one or more STA information fields. Still further, in some implementations, an Extremely High Throughput (EHT) PPDU may include signaling to indicate whether the EHT PPDU is formatted as a sounding NDP.
1. A method for wireless communication by a wireless communication device comprising:
receiving a null data packet announcement (NDPA) frame indicating a request for sounding feedback, the NDPA frame including a medium access control (MAC) header, a sounding dialogue token field that follows the MAC header, and a first wireless station (STA) information field carrying bandwidth information indicating a bandwidth associated with the sounding feedback, a first two bits of the sounding dialogue token field indicating a format of the NDPA frame and remaining bits of the sounding dialogue token field indicating a sounding dialogue token number associated with the NDPA frame, the first STA information field including one or more reserved bits and an association identifier (AID) subfield value having a special AID value that is not assigned to any STAs associated with a same basic service set (BSS) as the wireless communication device, and the bandwidth information being associated with the format of the NDPA frame;
receiving a null data packet (NDP) following the receiving of the NDPA, wherein the NDP is a physical layer convergence protocol (PLCP) protocol data unit (PPDU) having a physical layer preamble that includes a legacy signal field (L-SIG), a repeat of the L-SIG (RL-SIG) that follows the L-SIG, and a universal signal field (U-SIG) that follows the RL-SIG, and wherein the U-SIG carries information indicating that the PPDU is an NDP; and
transmitting the sounding feedback in accordance with the received NDP and the bandwidth information.
2. The method of claim 1 , wherein each of the first two bits of the sounding dialogue token field has a value equal to 1.
3. The method of claim 1 , wherein the first STA information field further includes a partial BSS identifier (BSSID) subfield having a value associated with the BSS and a number of STA information fields (NumSTAInfoFields) subfield indicating a number (N) of STA information fields following the first STA information field, each of the N STA information fields being identified in accordance with a respective AID value and the value indicated by the partial BSSID subfield.
4. The method of claim 1 , wherein the information carried in the U-SIG includes compression mode information indicating a compression mode associated with a multi-user (MU) PPDU format.
5. The method of claim 1 , wherein the physical layer preamble further includes a non-legacy signal field (EHT-SIG) that follows the U-SIG, the EHT-SIG including a common field and zero user fields.
6. The method of claim 2 , wherein the bandwidth information is carried in a partial bandwidth information subfield that is less than 14 bits in length.
7. The method of claim 2 , wherein the first STA information field includes a number of columns (Nc) subfield that is 4 bits in length.
8. The method of claim 5 , wherein the information carried in the U-SIG includes a value of an EHT-SIG modulation and coding scheme (MCS) field indicating an MCS associated with the EHT-SIG and includes a value of a number of EHT-SIG symbols field indicating a number of symbols associated with the EHT-SIG.
9. The method of claim 7 , wherein the Nc subfield indicates a number of spatial streams or a number of columns of a feedback matrix to be included in the sounding feedback.
10. The method of claim 8 , wherein the value of the EHT-SIG MCS field indicates MCSO and the value of the number of EHT-SIG symbols field indicates 1 EHT-SIG symbol.
11. An apparatus at a wireless communication device for wireless communications, comprising:
a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause the apparatus to:
receive a null data packet announcement (NDPA) frame indicating a request for sounding feedback, the NDPA frame including a medium access control (MAC) header, a sounding dialogue token field that follows the MAC header, and a first wireless station (STA) information field carrying bandwidth information indicating a bandwidth associated with the sounding feedback, a first two bits of the sounding dialogue token field indicating a format of the NDPA frame and remaining bits of the sounding dialogue token field indicating a sounding dialogue token number associated with the NDPA frame, the first STA information field including one or more reserved bits and an association identifier (AID) subfield value having a special AID value that is not assigned to any STAs associated with a same basic service set (BSS) as the wireless communication device, and the bandwidth information being associated with the format of the NDPA frame;
receive a null data packet (NDP) following the receiving of the NDPA, wherein the NDP is a physical layer convergence protocol (PLCP) protocol data unit (PPDU) having a physical layer preamble that includes a legacy signal field (L-SIG), a repeat of the L-SIG (RL-SIG) that follows the L-SIG, and a universal signal field (U-SIG) that follows the RL-SIG, and wherein the U-SIG carries information indicating that the PPDU is an NDP; and
transmit the sounding feedback in accordance with the received NDP and the bandwidth information.
12. The apparatus of claim 11 , wherein each of the first two bits of the sounding dialogue token field has a value equal to 1.
13. A method for wireless communication by a wireless communication device comprising:
transmitting a null data packet announcement (NDPA) frame indicating a request for sounding feedback, the NDPA frame including a medium access control (MAC) header, a sounding dialogue token field that follows the MAC header, and a first wireless station (STA) information field carrying bandwidth information indicating a bandwidth associated with the sounding feedback, a first two bits of the sounding dialogue token field indicating a format of the NDPA frame and remaining bits of the sounding dialogue token field indicating a sounding dialogue token number associated with the NDPA frame, the first STA information field including one or more reserved bits and an association identifier (AID) subfield value having a special AID value that is not assigned to any STAs associated with a same basic service set (BSS) as the wireless communication device, and the bandwidth information being associated with the format of the NDPA frame;
transmitting a null data packet (NDP) following the transmitting of the NDPA, wherein the NDP is a physical layer convergence protocol (PLCP) protocol data unit (PPDU) having a physical layer preamble that includes a legacy signal field (L-SIG), a repeat of the L- SIG (RL-SIG) that follows the L-SIG, and a universal signal field (U-SIG) that follows the RL- SIG, and wherein the U-SIG carries information indicating that the PPDU is an NDP; and
receiving the sounding feedback responsive to the NDP.
14. The method of claim 13 , wherein each of the first two bits of the sounding dialogue token field has a value equal to 1.
15. The method of claim 13 , wherein the first STA information field further includes a partial BSS identifier (BSSID) subfield having a value associated with the BSS and a number of STA information fields (NumSTAInfoFields) subfield indicating a number (N) of STA information fields following the first STA information field, each of the N STA information fields being identified in accordance with a respective AID value and the value indicated by the partial BSSID subfield.
16. The method of claim 13 , wherein the information carried in the U-SIG includes compression mode information indicating a compression mode associated with a multi-user (MU) PPDU format.
17. The method of claim 13 , wherein the physical layer preamble further includes a non-legacy signal field (EHT-SIG) that follows the U-SIG, the EHT-SIG including a common field and zero user fields.
18. The method of claim 14 , wherein the bandwidth information is carried in a partial bandwidth information subfield that is less than 14 bits in length.
19. The method of claim 14 , wherein the first STA information field includes a number of columns (Nc) subfield that is 4 bits in length.
20. The method of claim 17 , wherein the information carried in the U-SIG includes a value of an EHT-SIG modulation and coding scheme (MCS) field indicating an MCS associated with the EHT-SIG and includes a value of a number of EHT-SIG symbols field indicating a number of symbols associated with the EHT-SIG.
21. The method of claim 20 , wherein the Nc subfield indicates a number of spatial streams or a number of columns of a feedback matrix to be included in the sounding feedback.
22. The method of claim 20 , wherein the value of the EHT-SIG MCS field indicates MCSO and the value of the number of EHT-SIG symbols field indicates 1 EHT-SIG symbol.
23. An apparatus at a wireless communication device for wireless communications, comprising:
a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause the apparatus to:
transmit a null data packet announcement (NDPA) frame indicating a request for sounding feedback, the NDPA frame including a medium access control (MAC) header, a sounding dialogue token field that follows the MAC header, and a first wireless station (STA) information field carrying bandwidth information indicating a bandwidth associated with the sounding feedback, a first two bits of the sounding dialogue token field indicating a format of the NDPA frame and remaining bits of the sounding dialogue token field indicating a sounding dialogue token number associated with the NDPA frame, the first STA information field including one or more reserved bits and an association identifier (AID) subfield value having a special AID value that is not assigned to any STAs associated with a same basic service set (BSS) as the wireless communication device, and the bandwidth information being associated with the format of the NDPA frame;
transmit a null data packet (NDP) following the transmitting of the NDPA, wherein the NDP is a physical layer convergence protocol (PLCP) protocol data unit (PPDU) having a physical layer preamble that includes a legacy signal field (L-SIG), a repeat of the L-SIG (RL-SIG) that follows the L-SIG, and a universal signal field (U-SIG) that follows the RL-SIG, and wherein the U-SIG carries information indicating that the PPDU is an NDP; and
receive the sounding feedback responsive to the NDP.
24. The apparatus of claim 23 , wherein each of the first two bits of the sounding dialogue token field has a value equal to 1.