Physical layer preamble design for special packet types
This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARD), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.
1. A method for wireless communication at a wireless communication device comprising:
obtaining a packet including a physical layer preamble that includes a first portion and a second portion following the first portion, the first portion including a legacy signal field (L-SIG), the second portion including a repeat of the L-SIG (RL-SIG) that immediately follows the L-SIG, a universal signal field (U-SIG) that immediately follows the RL-SIG, and one or more additional fields depending on a physical layer convergence protocol (PLCP) protocol data unit (PPDU) format of the packet, wherein the PPDU format comprises a multi-user (MU) PPDU format, wherein the one or more additional fields include an Extremely High Throughput (EHT) signal field (EHT-SIG) comprising a common field and a user specific field consisting of one or more user fields, and wherein the U-SIG includes at least punctured channel information associated with a wireless channel;
determining one or more punctured subchannels of the wireless in accordance with at least the punctured channel information in the U-SIG and the PPDU format of the packet; and
processing the packet in accordance with the determined punctured subchannels.
2. The method of claim 1 , wherein the common field includes resource unit (RU) allocation information.
3. The method of claim 2 , wherein the one or more punctured subchannels are determined in accordance with the RU allocation information in the EHT-SIG.
4. The method of claim 2 , wherein the one or more punctured subchannels are determined in accordance with a bitmap in the EHT-SIG.
5. The method of claim 2 , wherein the EHT-SIG includes multiple user fields multiple users.
6. The method of claim 2 , wherein a granularity of the RU allocation information is based at least in part on a puncturing granularity of the one or more punctured subchannels.
7. The method of claim 1 , wherein U-SIG includes at least an EHT-SIG compression field, and wherein the determination of the one or more punctured subchannels is further in accordance with a value of the EHT-SIG compression field.
8. An apparatus for wireless communication, comprising: a processing system configured to: obtain a packet including a physical layer preamble that includes a first portion and a second portion following the first portion, the first portion including a legacy signal field (L-SIG), the second portion including a repeat of the L-SIG (RL-SIG) that immediately follows the L-SIG, a universal signal field (U-SIG) that immediately follows the RL-SIG, and one or more additional fields depending on a physical layer convergence protocol (PLCP) protocol data unit (PPDU) format of the packet, wherein the PPDU format comprises a multi-user (MU) PPDU format, wherein the one or more additional fields include an Extremely High Throughput (EHT) signal field (EHT-SIG) comprising a common field and a user specific field consisting of one or more user fields, and wherein the U-SIG includes at least punctured channel information associated with a wireless channel;
determine one or more punctured subchannels of the wireless in accordance with at least the punctured channel information in the U-SIG and the PPDU format of the packet; and
process the packet in accordance with the determined punctured subchannels.
9. The apparatus of claim 8 , wherein the common field includes resource unit (RU) allocation information.
10. The apparatus of claim 9 , wherein the one or more punctured subchannels are determined in accordance with the RU allocation information in the EHT-SIG.
11. The apparatus of claim 9 , wherein the one or more punctured subchannels are determined in accordance with a bitmap in the EHT-SIG.
12. The apparatus of claim 9 , wherein the EHT-SIG includes multiple user fields for multiple users.
13. The apparatus of claim 9 , wherein a granularity of the RU allocation information is based at least in part on a puncturing granularity of the one or more punctured subchannels.
14. The apparatus of claim 8 , wherein the U-SIG includes at least an EHT-SIG compression field, and wherein the determination of the one or more punctured subchannels is further in accordance with a value of the EHT-SIG compression field.
15. A wireless communication device for wireless communication, comprising:
at least one modem configured to receive a packet via a wireless channel; and a processing system configured to:
obtain the packet from the at least one modem, the packet including a physical layer preamble that includes a first portion and a second portion following the first portion, the first portion including a legacy signal field (L-SIG), the second portion including a repeat of the L-SIG (RL-SIG) that immediately follows the L-SIG, a universal signal field (U-SIG) that immediately follows the RL-SIG, and one or more additional fields depending on a physical layer convergence protocol (PLCP) protocol data unit (PPDU) format of the packet, wherein the PPDU format comprises a multi-user (MU) PPDU format, wherein the one or more additional fields include an Extremely High Throughput (EHT) signal field (EHT-SIG) comprising a common field and a user specific field consisting of one or more user fields, and wherein the U-SIG includes at least punctured channel information associated with a wireless channel;
determine one or more punctured subchannels of the wireless channel in accordance with at least the punctured channel information in the U-SIG and the PPDU format of the packet; and process the packet in accordance with the determined punctured subchannels.
16. The wireless communication device of claim 15 , the common field includes resource unit (RU) allocation information.
17. The wireless communication device of claim 16 , wherein the one or more punctured subchannels are determined in accordance with the RU allocation information in the EHT-SIG.
18. The wireless communication device of claim 16 , wherein the one or more punctured subchannels are determined in accordance with a bitmap in the EHT-SIG.
19. The wireless communication device of claim 16 , wherein the EHT-SIG includes multiple user fields for the single user multiple users.
20. The wireless communication device of claim 16 , wherein a granularity of the RU allocation information is based at least in part on a puncturing granularity of the one or more punctured subchannels.
21. The wireless communication device of claim 15 , wherein the U-SIG includes at least an EHT-SIG compression field, and wherein the determination of the one or more punctured subchannels is further in accordance with a value of the EHT-SIG compression field.