Base station antenna dispatching method based on user distance

The invention discloses a base station antenna dispatching method based on the user distance. The method specifically comprises the steps that system initialization is carried out, wherein the lowest signal interference noise ratio for ensuring the communication and the total number of base station antennas are determined; a base station sends pilot signals to service users of a local cell, every user receives the pilot signals and calculates the distance between the user and the base station, then the users send the distance values to the base station of the local cell, and the base station determines the number of dispatched antennas according to the lowest signal interference noise ratio for ensuring the communication between the base station and the users and the distances between the users and the base station. The base station antenna dispatching method based on the user distance is applicable to large-scale multi-input and multi-output cellular network scenes where the sending end is provided with multiple antennas in a matched mode and the receiving end is provided with a single antenna in a matched mode. The numbers of the dispatched antennas of the base station are different according to the difference of the qualities of the signal interference noise ratio of different users in the cell, so that static energy for maintaining working of redundant antennas is saved. Meanwhile, the redundant antennas after every dispatching can also serve other users, and therefore the average energy efficiency of a down link is improved.