Communication method, communication apparatus, and communication device
A communication method includes: generating an extremely high-throughput physical layer protocol data unit (EHT PPDU) that comprises a legacy physical layer preamble and a new physical layer preamble, wherein the legacy physical layer preamble comprises a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field in turn, and wherein a first field of the new physical layer preamble is a repeat of a field in the legacy physical layer preamble and is modulated by binary phase shift keying, BPSK; and sending the PPDU.
1. A communication method, comprising:
generating an extremely high-throughput physical layer protocol data unit (EHT PPDU) that comprises a legacy physical layer preamble and a new physical layer preamble, wherein the legacy physical layer preamble comprises a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field in order, and wherein a first field of the new physical layer preamble is a repeat of a field in the legacy physical layer preamble and is modulated by binary phase shift keying (BPSK); and
sending the EHT PPDU.
2. The communication method of claim 1 , wherein the field in the legacy physical layer preamble is the L-SIG field.
3. The communication method of claim 2 , wherein a value of a length field of the L-SIG field and a value of the first field of the new physical layer preamble are both divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
4. The communication method of claim 2 , wherein a value of a length field in the L-SIG field is divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
5. The communication method of claim 1 , wherein the first field is right after the L-SIG field, and wherein the new physical layer preamble further comprises an extremely high-throughput signal 2 (EHT-SIG 2 ) field that is right after an extremely high-throughput signal 1 (EHT-SIG 1 ) field and carries resource unit (RU) allocation and user information.
6. A communication method, comprising:
receiving an extremely high-throughput physical layer protocol data unit (EHT PPDU) that comprises a legacy physical layer preamble and a new physical layer preamble, wherein the legacy physical layer preamble comprises a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field in turn, and wherein a first field of the new physical layer preamble is a repeat of a field in the legacy physical layer preamble and is modulated by binary phase shift keying (BPSK); and
decoding the EHT PPDU.
7. The communication method of claim 6 , wherein the field in the legacy physical layer preamble is the L-SIG field.
8. The communication method of claim 7 , wherein a value of a length field of the L-SIG field and the first field of the new physical layer preamble are both divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
9. The communication method of claim 7 , wherein a value of a length field in the L-SIG field is divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
10. The communication method of claim 6 , wherein the first field of the new physical layer preamble is right after the L-SIG field, and wherein the new physical layer preamble further comprises an extremely high-throughput signal 2 (EHT-SIG 2 ) field that is right after an extremely high-throughput signal 1 (EHT-SIG 1 ) field and carries resource unit (RU) allocation and user information.
11. A communication apparatus, comprising:
one or more processors configured to generate an extremely high-throughput physical layer protocol data unit (EHT PPDU) that comprises a legacy physical layer preamble and a new physical layer preamble, wherein the legacy physical layer preamble comprises a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field in turn, and wherein a first field of the new physical layer preamble is a repeat of a field in the legacy physical layer preamble and is modulated by binary phase shift keying (BPSK); and
a transmitter coupled to the processor and configured to send the EHT PPDU.
12. The communication apparatus of claim 11 , wherein the field in the legacy physical layer preamble is the L-SIG field.
13. The communication apparatus of claim 12 , wherein a value of a length field of the L-SIG field and the first field of the new physical layer preamble are both divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficiency PPDU (HE PPDU).
14. The communication apparatus of claim 12 , wherein a value of a length field in the L-SIG field is divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
15. The communication apparatus of claim 11 , wherein the first field of the new physical layer preamble is right after the L-SIG field, and wherein the new physical layer preamble further comprises an extremely high-throughput signal 2 (EHT-SIG 2 ) field that is right after an extremely high-throughput signal 1 (EHT-SIG 1 ) field and carries resource unit (RU) allocation and user information.
16. A communication apparatus, comprising:
a receiver configured to receive an extremely high-throughput physical layer protocol data unit (EHT PPDU) that comprises a legacy physical layer preamble and a new physical layer preamble, wherein the legacy physical layer preamble comprises a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field in turn, and wherein a first field of the new physical layer preamble is a repeat of a field in the legacy physical layer preamble and is modulated by binary phase shift keying (BPSK); and
one or more processors coupled to the receiver and configured to decode the EHT PPDU.
17. The communication apparatus of claim 16 , wherein the field in the legacy physical layer preamble is the L-SIG field.
18. The communication apparatus of claim 17 , wherein a value of a length field of the L-SIG field and the first field of the new physical layer preamble are both divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
19. The communication apparatus of claim 16 , wherein a value of a length field in the L-SIG field is divisible by 3, and wherein being divisible by 3 indicates differentiation between the EHT PPDU from a high efficient PPDU (HE PPDU).
20. The communication apparatus of claim 16 , wherein the first field of the new physical layer preamble is right after the L-SIG field, and wherein the new physical layer preamble further comprises an extremely high-throughput signal 2 (EHT-SIG 2 ) field that is right after an extremely high-throughput signal 1 (EHT-SIG 1 ) field and carries resource unit (RU) allocation and user information.