A wireless communication method and system, and a device: A first network device determines m first signals, a first spatial resource corresponding to each first signal, and a resource set to which each first spatial resource belongs, and sends a first signal on each corresponding first spatial resource; a second network device determines a response signal according to at least one received first signal, a first spatial resource corresponding to a first signal, and a resource set to which each first spatial resource belongs, and sends the response signal to the first network device; and the first network device sends a second signal to the second network device on k second spatial resources according to the received response signal. The embodiments of the present invention are used for wireless communication.