Abstract: A communications apparatus includes a radio transceiver and a processor. The radio transceiver transmits or receives wireless radio frequency signals to communicate with a first network device. The processor estimates a first Doppler frequency shift value corresponding to a first carrier frequency utilized for communicating with the first network device, and adjusts the first carrier frequency to an adjusted first carrier frequency according to the first Doppler frequency shift value and communicates with the first network device according to the adjusted first carrier frequency via the radio transceiver or adjusts a first value of a measured signal quality of the first network device to an adjusted first value according to the first Doppler frequency shift value and transmits a first measurement report with the adjusted first value via the radio transceiver to the first network device.