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US-12628165-B2 - Communication method and communication apparatus

US12628165B2US 12628165 B2US12628165 B2US 12628165B2US-12628165-B2

Abstract

A communication method includes generating, by a first device, first control information, and sending, by the first device, the first control information to a second device. The first control information includes a first field and a second field. The first field is useable to indicate a channel state of a first subchannel in a first channel segment. The second field is useable to indicate a channel state of a second subchannel in a second channel segment.

Inventors

  • Yunbo Li
  • Jian Yu
  • Yuchen Guo

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260512
Application Date
20221026
Priority Date
20200427

Claims (15)

  1. 1 . A communication method, comprising: generating, by a first device, first control information, wherein the first control information comprises a first field and a second field, the first field is useable to indicate a channel state of a first subchannel in a first channel segment, and the second field is useable to indicate a channel state of a second subchannel in a second channel segment; and sending, by the first device, the first control information to a second device, wherein the first control information is an A-control subfield, the first channel segment is a primary 160 MHZ, and the second channel segment is a secondary 160 MHZ; wherein the primary 160 MHZ channel is a 160 MHz channel in which a primary 20 MHz is located, the secondary 160 MHZ is a 160 MHz subchannel in a 320 MHz subchannel other than the primary 160 MHz subchannel.
  2. 2 . The method according to claim 1 , wherein the first field includes a first bitmap useable to indicate a channel state of each first subchannel in the first channel segment; and the second field includes a second bitmap useable to indicate a channel state of each second subchannel in the second channel segment.
  3. 3 . The method according to claim 1 , wherein the first field and the second field are bandwidth query report (BQR) control subfields.
  4. 4 . The method according to claim 1 , wherein a first bandwidth of the first channel segment is 160 megahertz (MHz), and a second bandwidth of the second channel segment is 160 MHZ.
  5. 5 . The method according to claim 1 , wherein the channel state of the first subchannel in the first channel segment or the channel state of the second subchannel in the second channel segment includes an available state or a busy state.
  6. 6 . A communication apparatus, comprising: a non-transitory memory, configured to store non-transitory instructions; and at least one processor coupled to the processor, the at least one processor being configured to execute the non-transitory instructions, to thereby cause the communication apparatus to perform operations comprising: generating first control information, wherein the first control information comprises a first field and a second field, the first field is useable to indicate a channel state of a first subchannel in a first channel segment, and the second field is useable to indicate a channel state of a second subchannel in a second channel segment; and sending the first control information to a second device, wherein the first control information is an A-control subfield, the first channel segment is a primary 160 MHZ, and the second channel segment is a secondary 160 MHZ; wherein the primary 160 MHZ channel is a 160 MHz channel in which a primary 20 MHz is located, the secondary 160 MHZ is a 160 MHz subchannel in a 320 MHz subchannel other than the primary 160 MHz subchannel.
  7. 7 . The communication apparatus according to claim 6 , wherein the first field includes a first bitmap useable to indicate a channel state of each first subchannel in the first channel segment; and the second field includes a second bitmap useable to indicate a channel state of each second subchannel in the second channel segment.
  8. 8 . The communication apparatus according to claim 6 , wherein the first field and the second field are bandwidth query report (BQR) control subfields.
  9. 9 . The communication apparatus according to claim 6 , wherein a first bandwidth of the first channel segment is 160 megahertz (MHz), and a second bandwidth of the second channel segment is 160 MHZ.
  10. 10 . The communication apparatus according to claim 6 , wherein the channel state of the first subchannel in the first channel segment or the channel state of the second subchannel in the second channel segment includes an available state or a busy state.
  11. 11 . A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium is configured to store non-transitory instructions, and in response to the non-transitory instructions being executed by a processor, the processor is configured to perform operations including: generating first control information, wherein the first control information comprises a first field and a second field, the first field is useable to indicate a channel state of a first subchannel in a first channel segment, and the second field is useable to indicate a channel state of a second subchannel in a second channel segment; and sending the first control information to a second device, wherein the first control information is an A-control subfield, the first channel segment is a primary 160 MHZ, and the second channel segment is a secondary 160 MHZ; wherein the primary 160 MHZ channel is a 160 MHz channel in which a primary 20 MHz is located, the secondary 160 MHZ is a 160 MHz subchannel in a 320 MHz subchannel other than the primary 160 MHz subchannel.
  12. 12 . The non-transitory computer-readable storage medium according to claim 11 , wherein the first field includes a first bitmap useable to indicate a channel state of each first subchannel in the first channel segment; and the second field includes a second bitmap useable to indicate a channel state of each second subchannel in the second channel segment.
  13. 13 . The non-transitory computer-readable storage medium according to claim 11 , wherein the first field and the second field are bandwidth query report (BQR) control subfields.
  14. 14 . The non-transitory computer-readable storage medium according to claim 11 , wherein a first bandwidth of the first channel segment is 160 megahertz (MHz), and a second bandwidth of the second channel segment is 160 MHZ.
  15. 15 . The non-transitory computer-readable storage medium according to claim 11 , wherein the channel state of the first subchannel in the first channel segment or the channel state of the second subchannel in the second channel segment includes an available state or a busy state.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Patent Application No. PCT/CN2021/088998, filed on Apr. 22, 2021, which claims priority to Chinese Patent Application No. 202010346204.6, filed on Apr. 27, 2020. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD This application relates to the communication field, and in particular, to a communication method and a communication apparatus. BACKGROUND IEEE 802.11 is one of mainstream wireless access standards and has been widely used in commercial applications in the past decade. An access point (access point, AP) accesses the Internet in a wired or wireless manner, the AP is associated with a plurality of stations, and uplink and downlink communication is performed between the AP and the associated stations by using the IEEE 802.11 protocol. The station may report a busy/available channel state of the station to the AP. In the IEEE 802.11a standard, only a 20 MHz bandwidth is supported. Supported bandwidth has continuously increased with evolution to subsequent standards. In the IEEE 802.11n standard, a maximum bandwidth of 40 MHz is supported, and in the IEEE 802.11ac/ax standard, a maximum bandwidth of 160 MHz is supported. In the IEEE 11be standard, a maximum bandwidth is extended to 320 MHz. Currently, a technology in which a station reports a channel state to an AP supports reporting of a channel state of a channel with a maximum bandwidth of 160 MHz, and cannot indicate a channel state of a channel with a larger bandwidth. SUMMARY This application provides a communication method and a communication apparatus, to indicate a channel state of a channel with a larger bandwidth, so as to meet a communication requirement of a larger bandwidth. According to a first aspect, a communication method is provided, including: a first device (which may alternatively be a module or a chip in the first device) generates first control information, where the first control information includes a first field and a second field, the first field is used to indicate a channel state of a first subchannel in a first channel segment, and the second field is used to indicate a channel state of a second subchannel in a second channel segment; and the first device sends the first control information to a second device. In an embodiment of this application, the first control information carries the two fields, and the two fields each are used to indicate a channel state of a subchannel in a channel segment, to indicate a channel state of a channel with a larger bandwidth. Optionally, that the first field is used to indicate a channel state of a first subchannel in a first channel segment includes: A first bitmap in the first field is used to indicate a channel state of each first subchannel in the first channel segment; and that the second field is used to indicate a channel state of a second subchannel in a second channel segment includes: A second bitmap in the second field is used to indicate a channel state of each second subchannel in the second channel segment. According to a second aspect, a communication method is provided, including: A second device receives first control information from a first device, where the first control information includes a first field and a second field, the first field is used to indicate a channel state of a first subchannel in a first channel segment, and the second field is used to indicate a channel state of a second subchannel in a second channel segment; and determines channel state information of each channel based on the first control information. In an embodiment of this application, the first control information carries the two fields, and the two fields each are used to indicate a channel state of a subchannel in a channel segment, to indicate a channel state of a channel with a larger bandwidth. Related description of the first field and the second field is the same as that in the first aspect. For details, refer to the first aspect. A process in which the second device determines the channel state is an inverse process of behavior of the first device in the first aspect. The second device may learn of, based on the first control information, a channel state of each subchannel in the first channel segment and a channel state of each subchannel in the second channel segment that are reported by the first device. According to a third aspect, a communication method is provided, including: A first device generates first control information, where a first bitmap in the first control information is used to indicate a channel state of a first subchannel in a first channel segment, and a first bit in the first control information is used to indicate a channel state of a second channel segment; and the first device sends the first control information to a second device. In an embodiment of this application, the first bitmap in t