Radio frequency transmission method and device thereof

A radio frequency transmission method, comprising:

• transmitting a radio frequency command by a radio frequency reader;
• receiving the radio frequency command by a radio frequency tag, the radio frequency command comprising a plurality of bits;
• determining a logic level of each of the bits based upon a time length of each of the bits at a voltage level of a voltage waveform by the radio frequency tag;
• determining whether the radio frequency command is the same as a plurality of first prestored commands based upon the logic level of each of the bits by the radio frequency tag;
• determining whether to transmit a response signal in response to the radio frequency reader based upon a result of determination of whether the radio frequency command is the same as the first prestored commands by the radio frequency tag, wherein while the radio frequency tag transmits the response signal, the radio frequency tag transmits the response signal at a preset time point;
• receiving the radio frequency command by another radio frequency tag;
• determining a logic level of each of the bits based upon a time length of each of the bits at the voltage level of the voltage waveform by the another radio frequency tag;
• determining whether the radio frequency command is the same as a plurality of second prestored commands based upon the logic level of each of the bits by the another radio frequency tag;
• and
• determining whether to transmit another response signal in response to the radio frequency reader based upon a result of determination of whether the radio frequency command is the same as the second prestored commands by the another radio frequency tag, wherein while the another radio frequency tag transmits the another response signal, the another radio frequency tag transmits the another response signal at another preset time point, wherein a time difference of the another preset time point and the preset time point is greater than a threshold.