Abstract: Embodiments of this application relate to the field of wireless communication technologies, and disclose a communication method and apparatus. The method includes: generating a PPDU, where the PPDU has one or more discrete resource units, the discrete resource unit includes a plurality of sub-resource units, the plurality of sub-resource units include a plurality of discontiguous sub-resource units in an unpunctured sub-channel in a first channel, and/or the plurality of sub-resource units include a plurality of sub-resource units in a plurality of unpunctured sub-channels in the first channel; the sub-channel includes a plurality of resource units RUs, and the sub-resource unit includes some or all subcarriers in one RU; and the first channel includes a plurality of sub-channels; and sending the PPDU. The solutions in this application are used in a wireless local area network system supporting a next-generation Wi-Fi EHT protocol of the IEEE 802.11.

Abstract: A method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a data field; and sending the PPDU to a first station and a second station, where the first station is a station that does not support receiving a midamble, and the second station is a station that supports receiving the midamble. A second data field transmitted on a second resource unit allocated to the second station includes a midamble subfield. A first data field transmitted on a first resource unit allocated to the first station includes a useful information subfield. The useful information subfield includes useful data information, and the useful information subfield is located before a first OFDM symbol corresponding to the midamble subfield.

Abstract: A communication apparatus includes at least one processor; and one or more memories coupled to the at least one processor and storing instructions that, when executed by the at least one processor, cause the communication apparatus to generate a trigger frame. The trigger frame includes a first user information field, the first user information field is used to allocate a random access-resource unit (RA-RU) to an unassociated extremely high-throughput station (EHT STA). The trigger frame carries indication information that indicates channel division information. The communication apparatus is also caused to send the trigger frame to a station.

Abstract: An AP sends a trigger frame, where the trigger frame is used to trigger a station to send an EHT TB PPDU; and the AP receives the EHT TB PPDU sent by the station. A common information field of the trigger frame includes four UL SRP fields, indicating a sum of transmit power of the AP and maximum interference power accepted by the AP. Values indicated by an SRP1 field and an SRP2 field in a U-SIG of the EHT TB PPDU are respectively determined based on values indicated by the four UL SRP fields.