Channel bandwidth configuration method and device
Embodiments of this application provide a channel bandwidth configuration method and a device. The method includes: receiving bandwidth configuration information of a BSS, where the bandwidth configuration information of the BSS is carried in an EHT operation element, the EHT operation element includes a channel bandwidth field, a first channel center frequency field, and a second channel center frequency field, the channel bandwidth field indicates channel bandwidth information of the BSS, the first channel center frequency field and the second channel center frequency field indicate channel location information of the BSS, and the bandwidth information is any channel bandwidth in a plurality of channel bandwidths supported by a terminal; and obtaining the channel bandwidth information and the channel location information based on the bandwidth configuration information of the BSS. This application can be applied to a Wi-Fi system that supports the 802.11 standard, for example, the 802.11be standard.
1. A communication method, comprising:
receiving an extremely high throughput (EHT) operation element, wherein the EHT operation element comprises a channel bandwidth field, a first channel center frequency field, and a second channel center frequency field, wherein the channel bandwidth field indicates a channel bandwidth of a basic service set (BSS), the first channel center frequency field and the second channel center frequency field indicate channel location information of the BSS, wherein the channel bandwidth field indicates a preset value equal to 4, the preset value equal to 4 indicates that the channel bandwidth of the BSS is 320 MHz, the first channel center frequency field indicates a center frequency of a primary 160 MHz channel in the 320 MHz channel bandwidth of the BSS, the second channel center frequency field indicates a center frequency of the 320 MHz channel bandwidth of the BSS, and a difference between a value of the first channel center frequency field and a value of the second channel center frequency field is equal to 16; and
obtaining bandwidth configuration information of the BSS based on the EHT operation element, wherein the bandwidth configuration information of the BSS comprises the channel bandwidth and the channel location information.
2. The communication method according to claim 1 , wherein the EHT operation element further comprises a puncture bitmap indicating a punctured channel in the BSS.
3. The communication method according to claim 2 , wherein the puncture bitmap comprises at least one bit; each bit of the at least one bit one-to-one corresponds to a channel element in the channel bandwidth of the BSS; and when the bit is a preset bit value, the preset bit value indicates that the corresponding channel element is a punctured channel, wherein a channel bandwidth of the channel element is 20 MHz.
4. The communication method according to claim 1 , wherein the receiving EHT operation element, comprises:
receiving the EHT operation element in a 5 GHz frequency band.
5. The communication method according to claim 4 , wherein the receiving EHT operation element in the 5 GHz frequency band comprises:
receiving a management frame in the 5 GHz frequency band, wherein the management frame carries a high throughput (HT) operation element and the EHT operation element.
6. The communication method according to claim 1 , wherein the receiving EHT operation element, comprises:
receiving the EHT operation element in a 6 GHz frequency band.
7. The communication method according to claim 6 , wherein the receiving EHT operation element in the 6 GHz frequency band comprises:
receiving a management frame, wherein the management frame carries a high efficiency (HE) operation element and the EHT operation element.
8. An apparatus, comprising:
at least one processor; and
at least one memory that stores computer instructions, which when executed by the at least one processor, cause the apparatus to:
receive an extremely high throughput (EHT) operation element, wherein the EHT operation element comprises a channel bandwidth field, a first channel center frequency field, and a second channel center frequency field, wherein the channel bandwidth field indicates a channel bandwidth of a basic service set (BSS), the first channel center frequency field and the second channel center frequency field indicate channel location information of the BSS, wherein the channel bandwidth field indicates a preset value equal to 4, the preset value equal to 4 indicates that the channel bandwidth of the BSS is 320 MHz, the first channel center frequency field indicates a center frequency of a primary 160 MHz channel in the 320 MHz channel bandwidth of the BSS, the second channel center frequency field indicates a center frequency of the 320 MHz channel bandwidth of the BSS, and a difference between a value of the first channel center frequency field and a value of the second channel center frequency field is equal to 16; and
obtain bandwidth configuration information of the BSS based on the EHT operation element, wherein the bandwidth configuration information of the BSS comprises the channel bandwidth and the channel location information.
9. The apparatus according to claim 8 , wherein the EHT operation element further comprises a puncture bitmap indicating a punctured channel in the BSS.
10. The apparatus according to claim 9 , wherein the puncture bitmap comprises at least one bit; each bit of the at least one bit one-to-one corresponds to a channel element in the channel bandwidth of the BSS; when the bit is a preset bit value, the preset bit value indicates that the corresponding channel element is a punctured channel, wherein a channel bandwidth of the channel element is 20 MHz.
11. The apparatus according to claim 8 , wherein the computer instructions, when executed by the at least one processor, cause the apparatus to:
receive the EHT operation element in a 5 GHz frequency band.
12. The apparatus according to claim 11 , wherein the computer instructions, when executed by the at least one processor, cause the apparatus to:
receive a management frame in the 5 GHz frequency band, wherein the management frame carries a high throughput (HT) operation element and the EHT operation element.
13. The apparatus according to claim 8 , wherein the computer instructions, when executed by the at least one processor, cause the apparatus to:
receive the EHT operation element in a 6 GHz frequency band.
14. The apparatus according to claim 13 , wherein the computer instructions, when executed by the at least one processor, cause the apparatus to:
receive a management frame, wherein the management frame carries a high efficiency (HE) operation element and the EHT operation element.
15. A non-transitory computer readable storage medium storing computer instructions, which when executed by at least one processor, causing an apparatus comprising the at least one processor to:
receive an extremely high throughput (EHT) operation element, wherein the EHT operation element comprises a channel bandwidth field, a first channel center frequency field, and a second channel center frequency field, wherein the channel bandwidth field indicates a channel bandwidth of a basic service set (BSS), the first channel center frequency field and the second channel center frequency field indicate channel location information of the BSS, wherein the channel bandwidth field indicates a preset value equal to 4, the preset value equal to 4 indicates that the channel bandwidth of the BSS is 320 MHz, the first channel center frequency field indicates a center frequency of a primary 160 MHz channel in the 320 MHz channel bandwidth of the BSS, the second channel center frequency field indicates a center frequency of the 320 MHz channel bandwidth of the BSS, and a difference between a value of the first channel center frequency field and a value of the second channel center frequency field is equal to 16; and
obtain bandwidth configuration information of the BSS based on the EHT operation element, wherein the bandwidth configuration information of the BSS comprises the channel bandwidth and the channel location information.
16. The non-transitory computer readable storage medium according to claim 15 , wherein the EHT operation element further comprises a puncture bitmap indicating a punctured channel in the BSS.
17. The non-transitory computer readable storage medium according to claim 16 , wherein the puncture bitmap comprises at least one bit; each of the at least one bit one-to-one corresponds to a channel element in the channel bandwidth of the BSS; when the bit is a preset bit value, the preset bit value indicates that the corresponding channel element is a punctured channel, wherein a channel bandwidth of the channel element is 20 MHz.
18. The non-transitory computer readable storage medium according to claim 15 , wherein the computer instructions, when executed by the at least one processor, cause the apparatus to:
receive a management frame in a 5 GHz frequency band, wherein the management frame carries a high throughput (HT) operation element and the EHT operation element.
19. The non-transitory computer readable storage medium according to claim 15 , wherein the computer instructions, when executed by the at least one processor, cause the apparatus to:
receive a management frame in a 6 GHz frequency band,, wherein the management frame carries a high efficiency (HE) operation element and the EHT operation element.