Abstract: This application provides an information indication method and an apparatus. In this application, a sending apparatus generates and sends a first frame, the first frame includes at least one piece of sub-time resource indication information, and each piece of sub-time resource indication information is in a one-to-one correspondence with one of at least one response apparatus. In addition, each piece of sub-time resource indication information includes a time resource at which the corresponding response apparatus sends feedback information for the first frame to the sending apparatus and a time resource at which the sending apparatus sends acknowledgment information for the feedback information to the corresponding response apparatus, so that the at least one response apparatus and the sending apparatus that sends the first frame can simultaneously perform beamforming training, thereby improving effectiveness of beamforming training performed on the sending apparatus and the at least one response apparatus.

Abstract: This application provides an information indication method and an apparatus. In this application, a sending apparatus generates and sends a first frame, the first frame includes at least one piece of sub-time resource indication information, and each piece of sub-time resource indication information is in a one-to-one correspondence with one of at least one response apparatus. In addition, each piece of sub-time resource indication information includes a time resource at which the corresponding response apparatus sends feedback information for the first frame to the sending apparatus and a time resource at which the sending apparatus sends acknowledgment information for the feedback information to the corresponding response apparatus, so that the at least one response apparatus and the sending apparatus that sends the first frame can simultaneously perform beamforming training, thereby improving effectiveness of beamforming training performed on the sending apparatus and the at least one response apparatus.

Abstract: Embodiments of this application relate to the communications field, and in particular, to an information sending/receiving method and apparatus in the communications field. The information receiving method includes: determining an information receiving time based on any two of a time division duplex sector sweep acknowledgement frame count index, a count index, and a time division duplex sector sweep frame count index, duration of a time division duplex sector sweep frame, and duration of a time division duplex sector sweep acknowledgement frame; and receiving information at the determined information receiving time. According to the information receiving/sending method provided in the embodiments of this application, the information sending apparatus can send information at an accurate information sending time, the information receiving apparatus can receive the information at an accurate information receiving time, and system communication can be normally performed.

Abstract: This application provides a beam training method and apparatus. The method includes: A first access point AP determines first information. The first information is used to indicate an association beamforming training A-BFT time period, the A-BFT time period is used to perform A-BFT between a plurality of APs and a station STA within coverage of the plurality of APs, and the plurality of APs include the first AP and at least one second AP. The first AP sends the first information. A first STA receives the first information, and determines, based on the first information, a time period for performing sector sweep. The beam training method and apparatus in embodiments of this application can be used to control the plurality of APs and a plurality of STAs to perform association beamforming training.

Abstract: Embodiments of this application relate to the communications field, and in particular, to an information sending/receiving method and apparatus in the communications field. The information receiving method includes: determining an information receiving time based on any two of a time division duplex sector sweep acknowledgement frame count index, a count index, and a time division duplex sector sweep frame count index, duration of a time division duplex sector sweep frame, and duration of a time division duplex sector sweep acknowledgement frame; and receiving information at the determined information receiving time. According to the information receiving/sending method provided in the embodiments of this application, the information sending apparatus can send information at an accurate information sending time, the information receiving apparatus can receive the information at an accurate information receiving time, and system communication can be normally performed.

Abstract: This application provides a beam training method and apparatus. The method includes: A first access point AP determines first information. The first information is used to indicate an association beamforming training A-BFT time period, the A-BFT time period is used to perform A-BFT between a plurality of APs and a station STA within coverage of the plurality of APs, and the plurality of APs include the first AP and at least one second AP. The first AP sends the first information. A first STA receives the first information, and determines, based on the first information, a time period for performing sector sweep. The beam training method and apparatus in embodiments of this application can be used to control the plurality of APs and a plurality of STAs to perform association beamforming training.

Abstract: Embodiments of this application relate to the communications field, and in particular, to an information sending/receiving method and apparatus in the communications field. The information receiving method includes: determining an information receiving time based on any two of a time division duplex sector sweep acknowledgement frame count index, a count index, and a time division duplex sector sweep frame count index, duration of a time division duplex sector sweep frame, and duration of a time division duplex sector sweep acknowledgement frame; and receiving information at the determined information receiving time. According to the information receiving/sending method provided in the embodiments of this application, the information sending apparatus can send information at an accurate information sending time, the information receiving apparatus can receive the information at an accurate information receiving time, and system communication can be normally performed.

Abstract: This application provides an information indication method and an apparatus. In this application, a sending apparatus generates and sends a first frame, the first frame includes at least one piece of sub-time resource indication information, and each piece of sub-time resource indication information is in a one-to-one correspondence with one of at least one response apparatus. In addition, each piece of sub-time resource indication information includes a time resource at which the corresponding response apparatus sends feedback information for the first frame to the sending apparatus and a time resource at which the sending apparatus sends acknowledgment information for the feedback information to the corresponding response apparatus, so that the at least one response apparatus and the sending apparatus that sends the first frame can simultaneously perform beamforming training, thereby improving effectiveness of beamforming training performed on the sending apparatus and the at least one response apparatus.