Information transmission method and information transmission apparatus

An information transmission method carried out by a first device, a first detection device and a communications device, comprising:

• determining, by the first device, indication information used to instruct the first detection device to determine a first transmit power used for transmitting a radar signal;
• sending, by the first device, the indication information to the first detection device;
• and
• sending, by the first detection device, for use by the communications device:
• time-frequency resource information that is used to indicate a time-frequency resource used for transmitting the radar signal, and
• at least one additional piece of information taken from the group consisting of:
• power information used to indicate the first transmit power, and
• the indication information;
• receiving, by the communications device, the time-frequency resource information and the at least one additional piece of information;
• and
• broadcasting, by the communications device, the time-frequency resource information and the at least one additional piece of information.

An apparatus, comprising:

• a processor;
• a receiver;
• and
• a transmitter, wherein the receiver and the transmitter are coupled to the processor, and wherein:
• the receiver is configured to receive indication information, used to instruct the first detection apparatus to determine a first transmit power used for transmitting a radar signal;
• the processor is configured to determine, in accordance with the indication information, the first transmit power;
• and
• the transmitter is configured to send, for use by a communications device:
• time-frequency resource information that is used to indicate a time-frequency resource used for transmitting the radar signal, and
• at least one additional piece of information taken from the group consisting of:
• power information used to indicate the first transmit power, and
• the indication information;
• wherein the communications device is configured to broadcast the time-frequency resource information and the at least one additional piece of information.