Puncturing information indication method and communication apparatus

1. A method comprising:

generating a physical layer protocol data unit (PPDU) comprising a preamble, wherein the preamble comprises a universal-SIG (U-SIG) field, wherein the U-SIG field comprises mode indication information and preamble puncturing status indication information, wherein the mode indication information indicates different modes, wherein the preamble puncturing status indication information indicates a preamble puncturing status corresponding to modes indicated by the mode indication information, wherein the preamble puncturing status indication information is a bitmap indicating the preamble puncturing status of a subchannel of 80 MHz corresponding to a first one of the modes, and wherein the preamble puncturing status indication information is an index corresponding to a second one of the modes; and sending the PPDU.

2. The method according to claim 1 , wherein the U-SIG field further comprises a bandwidth subfield, and the bandwidth subfield indicates that a bandwidth of the PPDU is one of the following:

20 MHz, 40 MHz, 80 MHZ, 160 MHz, or 320 MHz.

3. The method according to claim 1 , wherein the mode indication information and the preamble puncturing status indication information are located in a same subfield in the U-SIG field.

4. The method according to claim 1 , wherein the mode indication information and the preamble puncturing status indication information are located in different subfields in the U-SIG field.

5. A method comprising:

receiving a physical layer protocol data unit (PPDU) comprising a preamble, wherein the preamble comprises a universal-SIG (U-SIG) field, wherein the U-SIG field comprises mode indication information and preamble puncturing status indication information, wherein the mode indication information indicates different modes, wherein the preamble puncturing status indication information indicates a the preamble puncturing status corresponding to modes indicated by the mode indication information, wherein the preamble puncturing status indication information is a bitmap indicating the preamble puncturing status of a subchannel of 80 MHz corresponding to a first one of the modes, and wherein the preamble puncturing status indication information is an index corresponding to a second one of the modes; and

determining the preamble puncturing status, based on the mode indication information and corresponding indication information.

6. The method according to claim 5 , wherein the U-SIG field further comprises a bandwidth subfield, and the bandwidth subfield indicates that a bandwidth of the PPDU is one of the following:

20 MHz, 40 MHZ, 80 MHZ, 160 MHz, or 320 MHz.

7. The method according to claim 5 , wherein the mode indication information and the preamble puncturing status indication information are located in a same subfield in the U-SIG field.

8. The method according to claim 5 , wherein the mode indication information and the preamble puncturing status indication information are located in different subfields in the U-SIG field.

9. An apparatus comprising:

at least one processor;

one or more memory storing programming instructions for execution by the at least one processor to:

generate a physical layer protocol data unit (PPDU) comprising a preamble, wherein the preamble comprises a universal-SIG (U-SIG) field, wherein the U-SIG field comprises mode indication information and preamble puncturing status indication information, wherein the mode indication information indicates different modes, wherein the preamble puncturing status indication information indicates a preamble puncturing status corresponding to modes indicated by the mode indication information, wherein the preamble puncturing status indication information is a bitmap indicating the preamble puncturing status of a subchannel of 80 MHz corresponding to a first one of the modes, and wherein the preamble puncturing status indication information is an index corresponding to a second one of the modes; and send the PPDU.

10. The apparatus according to claim 9 , wherein the U-SIG field further comprises a bandwidth subfield, and the bandwidth subfield indicates that a bandwidth of the PPDU is one of the following:

20 MHz, 40 MHz, 80 MHZ, 160 MHz, or 320 MHz.

11. The apparatus according to claim 9 , wherein the mode indication information and the preamble puncturing status indication information are located in a same subfield in the U-SIG field.

12. The apparatus according to claim 9 , wherein the mode indication information and the preamble puncturing status indication information are located in different subfields in the U-SIG field.

13. An apparatus comprising:

at least one processor;

one or more memory storing programming instructions for execution by the at least one processor to:

receive a physical layer protocol data unit (PPDU) comprising a preamble, wherein the preamble comprises a universal (U-SIG) field, wherein the U-SIG field comprises mode indication information and preamble puncturing status indication information, wherein the mode indication information indicates different modes, wherein the preamble puncturing status indication information indicates a preamble puncturing status corresponding to modes indicated by the mode indication information, wherein the preamble puncturing status indication information is a bitmap indicating the preamble puncturing status of a subchannel of 80 MHz corresponding to a first one of the modes, and wherein the preamble puncturing status indication information is an index corresponding to a second one of the modes; and

determine the preamble puncturing status, based on the mode indication information and preamble puncturing status indication information.

14. The apparatus according to claim 13 , wherein the U-SIG field further comprises a bandwidth subfield, and the bandwidth subfield indicates that a bandwidth of the PPDU is one of the following:

20 MHz, 40 MHZ, 80 MHz, 160 MHz, or 320 MHz.

15. The apparatus according to claim 13 , wherein the mode indication information and the preamble puncturing status indication information are located in a same subfield in the U-SIG field.

16. The apparatus according to claim 13 , wherein the mode indication information and the preamble puncturing status indication information are located in different subfields in the U-SIG field.