Provided are an electronic device and method for use in a network control point and a central processing node. The electronic device for use in a network control point comprises a processing circuit. The processing circuit is used to acquire channel characteristic information of channels between a network control point and one or more neighboring network control points thereof and respective user equipment units, and to acquire service requirement information of the user equipment units served by the respective network control points. The current network control point and the neighboring network control points adopt joint precoding to perform downlink data transmission. The processing circuit determines, according to the service requirement information and the channel characteristic information, the number of transmitting antenna to be used by the network control point and the neighboring network control points.