Method and terminal device for determining multiple antennas control based on field test

A method for determining multiple antennas control based on field test comprises transmitting a field-test signal through a wireless access point to a terminal device by a testing signal source; executing a test mode by the terminal device, using a plurality of receiving antennas to receive the field-test signal from the wireless access point, obtaining a field-test throughput and a field-test physical-layer data rate, storing a relation ratio of the field-test throughput to field-test physical-layer data rate; executing a working mode by the terminal device, receiving a remote signal of a remote device through the wireless access point, obtaining a working-mode throughput and a working-mode physical-layer data rate correspondingly, multiplying the working-mode physical-layer data rate by the relation ratio to obtain a target throughput; and monitoring whether the working-mode throughput is lower the target throughput, changing the working status of the plurality of receiving antennas by the terminal device w