Physical layer preamble and signaling for wireless communication
This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.
1. A method for wireless communication by a wireless communication device comprising:
receiving, via a wireless channel, a packet including a preamble portion and a data portion, the preamble portion including:
a universal signal field (U-SIG) that includes at least a version identifier, frequency occupancy information, and a format information field; and
one or more version-specific signal fields, the frequency occupancy information indicating one or more subchannels of the wireless channel that include the one or more version-specific fields; and
decoding the one or more version-specific signal fields on the one or more subchannels of the wireless channel based at least in part on a format of the packet indicated at least in part by the version identifier and the format information field.
2. The method of claim 1 , wherein the frequency occupation information and the format information field indicate the formats and locations of the one or more version-specific signal fields on the one or more subchannels.
3. The method of claim 1 , wherein the U-SIG in a first subchannel of the one or more subchannels is populated with different values than the U-SIG in a second subchannel of the one or more subchannels.
4. The method of claim 1 , wherein the U-SIG is duplicated on each subchannel of a first plurality of subchannels of the wireless channel.
5. The method of claim 1 , wherein the U-SIG includes:
first signaling information for a first group of subchannels within the wireless channel, the first signaling information being duplicated on each subchannel of the first group of subchannels, and
second signaling information for a second group of subchannels within the wireless channel, the second signaling information being duplicated on each subchannel of the second group of subchannels.
6. The method of claim 5 , wherein the first group of subchannels has a bandwidth of 20 MHz, 40 MHz, 80 MHz or 160 MHz.
7. The method of claim 1 , wherein the format information field indicates whether the packet is a trigger-based (TB) physical layer control protocol (PLCP) protocol data unit (PPDU), a single-user (SU) PPDU, a multiuser (MU) PPDU, or a unified single-user (SU)/multi-user (MU) format that supports either a single user or multiple users.
8. The method of claim 7 , wherein a third signal field (EHT-SIG) is not included in the packet when the packet is a TB PPDU.
9. The method of claim 7 , wherein the one or more version-specific signal fields includes a third signal field (EHT-SIG) on one or more of the one or more subchannels when the packet is a SU PPDU, MU PPDU, or unified SU/MU format.
10. The method of claim 9 , further comprising determining a format of the EHT-SIG based, at least in part, on the format information field in the U-SIG.
11. The method of claim 10 , wherein the format information field of the U-SIG further includes one or more subfields selected from a group consisting of a PPDU format field, a modulation and coding scheme (MCS), dual sub-carrier modulations (DCM), number of EHT-SIG symbols, quantity of MU users, and a signaling compression field.
12. The method of claim 1 , wherein the U-SIG includes a cyclic redundancy check (CRC) field, and wherein the CRC field is based on fields in the U-SIG and a legacy signal field the (L-SIG).
13. The method of claim 1 , wherein the U-SIG is followed by a compressed Extremely-High Throughput (EHT) signal field (EHT-SIG) when the packet is formatted according to a unified single-user/multi-user (SU/MU) format and is directed to a single user.
14. The method of claim 1 , wherein the preamble portion includes the U-SIG following a repeated legacy signal field (RL-SIG) on a first plurality of subchannels of the wireless channel, and wherein the preamble portion includes a different signal field instead of the U-SIG following the RL-SIG on a second plurality of subchannels of the wireless channel.
15. The method of claim 14 , wherein the U-SIG is formatted according to a first wireless communication protocol and the different signal field is formatted according to a second wireless communication protocol.
16. The method of claim 14 , wherein the U-SIG and the different signal field end at a same symbol boundary for the first plurality of subchannels and the second plurality of subchannels, respectively.
17. The method of claim 14 , wherein the data portion of the packet includes an EHT short training field (EHT-STF), an EHT long training field (EHT-LTF), and data, wherein the EHT-STF and the EHT-LTF are aligned in time for all subchannels of the first plurality of subchannels, and wherein the data portion ends at a same symbol for all subchannels of the wireless channel.
18. The method of claim 1 , wherein the frequency occupation information in the U-SIG includes a physical layer protocol data unit (PPDU) bandwidth (PPDU BW) field and a punctured channel information field.
19. The method of claim 18 , wherein the punctured channel information field is populated with a punctured channel indication value to indicate one or more subchannels that are punctured.
20. The method of claim 19 , wherein the punctured channel information field indicates punctured channels for all subchannels of the wireless channel when the U-SIG is followed by a compressed Extremely High Throughput (EHT) signal field (EHT-SIG), and wherein the punctured channel information field indicates punctured channels within a plurality of subchannels of a portion of the wireless channel when the U-SIG is followed by an uncompressed EHT-SIG.
21. The method of claim 20 , wherein the punctured channel information field is populated with a first value for a first group of subchannels within a first plurality of subchannels within the wireless channel and wherein the punctured channel information field is populated with a second value for a second group of subchannels within the first plurality of subchannels.
22. The method of claim 1 , wherein the U-SIG further includes one or more additional version dependent fields selected from a group consisting of an indication whether the packet is an uplink (UL) or downlink (DL) packet, a transmission opportunity (TXOP) indicator, and a basic serviced set (BSS) color.
23. The method of claim 22 , wherein the U-SIG further includes one or more additional version dependent fields selected from a group consisting of a spatial reuse field, a guard interval and long training field indicator, a number of EHT-LTF symbols and midamble periodicity, a doppler indicator, a low data parity coding (LDPC) extra symbol segment indicator, a space time block coding (STBC) indicator, a pre-forward error correction (Pre-FEC) padding factor indicator, a packet extension (PE) disambiguity indicator, a beam change indicator.
24. The method of claim 23 , wherein the one or more additional version dependent fields of the U-SIG are overflowed to the one or more version-specific signal fields, and wherein the one or more version-specific fields includes an Extremely High Throughput (EHT) signal field (EHT-SIG).
25. The method of claim 1 , further comprising:
determining a beamforming configuration for the data portion of the packet based on beamforming information in the U-SIG or the one or more version-specific signal fields.
26. A wireless communication device comprising:
at least one modem configured to communicate via a wireless channel;
at least one processor communicatively coupled with the at least one modem; and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor in conjunction with the at least one modem, is configured to:
obtain, via the at least one modem, a packet including a preamble portion and a data portion, the preamble portion including:
a universal signal field (U-SIG) that includes at least a version identifier, frequency occupancy information, and a format information field; and
one or more version-specific signal fields, the frequency occupancy information indicating one or more subchannels of the wireless channel that include the one or more version-specific fields; and
decode the one or more version-specific signal fields on the one or more subchannels of the wireless channel based at least in part on a format of the packet indicated at least in part by the version identifier and the format information field.
27. The wireless communication device of claim 26 , wherein the frequency occupation information and the format information field indicate the formats and locations of the one or more version-specific signal fields on the one or more subchannels.
28. The wireless communication device of claim 27 , wherein the U-SIG in a first subchannel of the one or more subchannels is populated with different values than the U-SIG in a second subchannel of the one or more subchannels.
29. The wireless communication device of claim 26 ,
wherein the format information field indicates whether the packet is a trigger-based (TB) physical layer control protocol (PLCP) protocol data unit (PPDU), a single-user (SU) PPDU, a multi-user (MU) PPDU, or a unified single-user (SU)/multi-user (MU) format that supports either a single user or multiple users, and
wherein the one or more version-specific signal fields includes a third signal field (EHT-SIG) on one or more of the one or more subchannels when the packet is a SU PPDU, MU PPDU, or unified SU/MU format.
30. A mobile station comprising:
a wireless communication device comprising:
at least one modem configured to communicate via a wireless channel;
at least one processor communicatively coupled with the at least one modem; and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor in conjunction with the at least one modem, is configured to:
obtain, via the at least one modem, a packet including a preamble portion and a data portion, the preamble portion including:
a universal signal field (U-SIG) that includes at least a version identifier, frequency occupancy information, and a format information field; and
one or more version-specific signal fields, the frequency occupancy information indicating one or more subchannels of the wireless channel that include the one or more version-specific fields; and
decode the one or more version-specific signal fields on the one or more subchannels of the wireless channel based at least in part on a format of the packet indicated at least in part by the version identifier and the format information field;
at least one transceiver coupled to the at least one modem;
at least one antenna coupled to the at least one transceiver to wirelessly transmit signals output from the at least one transceiver and to wirelessly receive signals for input into the at least one transceiver; and
a housing that encompasses the at least one modem, the at least one processor, the at least one memory, the at least one transceiver and at least a portion of the at least one antenna.