Beam forming method, and method and device for determining initial beam indexing collection

The invention provides a beam forming method, and a method and device for determining an initial beam indexing collection, and relates to the field of wireless communication. The beam forming method is applied to a system which at least comprises one second category communication node, wherein the beam forming method comprises the following steps: sending an original beam; receiving an initial beam indexing collection determined by the second category communication node according to the original beam; determining a target beam which is used for sending a data through the initial beam indexing collection. Through the cooperation of the first category communication node and the second category communication node, the beam is selected, when the feedback quantity of the beam is reduced, the accuracy of choosing the beam is improved, the property of the wireless communication system is improved, and the coverage area of the system is enlarged.