Beam information acquisition method, pilot beam transmitting method, communication nodes and system

The invention discloses a beam information acquisition method, a pilot beam transmitting method, communication nodes and a system, which relates to the field of wireless communication. The beam information acquisition method comprises steps: at least one kind of pilot beams transmitted by a first communication node is received; configuration information of each pilot beam kind or configuration difference information of received any two pilot beam kinds is acquired; according to the configuration information or the configuration difference information, a lifting value of transmitting power of the received any two pilot beam kinds is calculated; channel quality information of the received pilot beams is calculated; and according to the lifting value of the transmitting power and the channel quality information, a pilot beam is selected, and the beam information is determined according to the pilot beams.