Bandwidth information indication method and communications device
A bandwidth information indication method includes generating, by a first communications device, a first frame, where the first frame includes a channel bandwidth field, a first channel center frequency segment field, a second channel center frequency segment field, a third channel center frequency segment field, and a fourth channel center frequency segment field, where the channel bandwidth field indicates a basic service set (BSS) bandwidth, and the first channel center frequency segment field, the second channel center frequency segment field, the third channel center frequency segment field, and the fourth channel center frequency segment field indicate a location of an operating channel of a BSS, and sending, by the first communications device, the first frame.
1. A first apparatus comprising:
a memory configured to store instructions; and
a processor coupled to the memory and configured to execute the instructions to cause the first apparatus to:
generate a first frame comprising an operation element field, wherein the operation element field comprises a channel bandwidth field, a first channel center frequency segment field, a second channel center frequency segment field, and a bitmap for preamble puncture field, wherein the channel bandwidth field indicates a basic service set (BSS) bandwidth, wherein the first channel center frequency segment field and the second channel center frequency segment field indicate a location of an operating channel of a BSS, and wherein each bit status in the bitmap for preamble puncture field indicates whether a subchannel of the operating channel of the BSS is available; and
send the first frame.
2. The first apparatus of claim 1 , wherein the operation element field is an Extremely High Throughput (EHT) operation information field.
3. The first apparatus of claim 1 , wherein the first frame further comprises a preamble punctured BSS field indicating whether the bitmap for preamble puncture field is present.
4. The first apparatus of claim 1 , wherein the first frame is a beacon frame.
5. The first apparatus of claim 1 , wherein the first frame is an association response frame.
6. The first apparatus of claim 1 , wherein the subchannel has a subchannel bandwidth of 20 megahertz (MHz).
7. A method comprising:
generating a first frame comprising an operation element field, wherein the operation element field comprises a channel bandwidth field, a first channel center frequency segment field, a second channel center frequency segment field, and a bitmap for preamble puncture field, wherein the channel bandwidth field indicates a basic service set (BSS) bandwidth, wherein the first channel center frequency segment field and the second channel center frequency segment field indicate a location of an operating channel of a BSS, and wherein each bit status in the bitmap for preamble puncture field indicates whether a subchannel of the operating channel of the BSS is available; and
sending the first frame.
8. The method of claim 7 , wherein the operation element field is an Extremely High Throughput (EHT) operation information field.
9. The method of claim 7 , wherein the first frame further comprises a preamble punctured BSS field indicating whether the bitmap for preamble puncture field is present.
10. The method of claim 7 , wherein the first frame comprises a beacon frame.
11. The method of claim 7 , wherein the first frame comprises an association response frame.
12. The method of claim 7 , wherein the subchannel has a subchannel bandwidth of 20 megahertz (MHz).
13. A computer program product comprising instructions that are stored on a non-transitory computer-readable medium and that, when executed by a processor, cause a first apparatus to:
generate a first frame comprising an operation element field, wherein the operation element field comprises a channel bandwidth field, a first channel center frequency segment field, a second channel center frequency segment field, and a bitmap for preamble puncture field, wherein the channel bandwidth field indicates a basic service set (BSS) bandwidth, wherein the first channel center frequency segment field and the second channel center frequency segment field indicate a location of an operating channel of a BSS, and wherein each bit status in the bitmap for preamble puncture field indicates whether a subchannel of the operating channel of the BSS is available; and
send the first frame.
14. The computer program product of claim 13 , wherein the operation element field is an Extremely High Throughput (EHT) operation information field.
15. The computer program product of claim 13 , wherein the first frame further comprises a preamble punctured BSS field indicating whether the bitmap for preamble puncture field is present.
16. The computer program product of claim 13 , wherein the first frame is a beacon frame or an association response frame.
17. The computer program product of claim 13 , wherein the subchannel has a subchannel bandwidth of 20 megahertz (MHz).
18. The computer program product of claim 13 , wherein the bitmap for preamble puncture field is 2 bytes.
19. The first apparatus of claim 1 , wherein the bitmap for preamble puncture field is 2 bytes.
20. The method of claim 7 , wherein the bitmap for preamble puncture field is 2 bytes.