A user service mode selection method in the case of 3D beams, a pilot frequency information sending method and apparatus are disclosed by the present invention. The selection method includes: comparing the total number of the users to be served with that of scheduling units; selecting a single-user service mode for each user when the total number of the users to be served is smaller than that of scheduling units; selecting J user groups meeting a preset condition to adopt a multi-user service mode when the total number of the users to be served is not smaller than that of scheduling unit, herein each user group includes two to-be-served users who perform downlink communication using the same time-frequency resource, J is an integer greater than 1, and 2J is an integer not greater than the total number of the users to be served; in the single-user service mode, one time-frequency resource only corresponds to one beam configured for communication; and in the multi-user service mode, one time-frequency resource corresponds to at least two beams configured for communication through time division multiplexing. A computer storage medium is also disclosed by the present invention.
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