Client position determination method and device and processor

The invention provides a client position determination method and device and a processor, and the method comprises the steps: a first obtaining step: obtaining at least one piece of first channel state information from a first communication link between a wireless access point and a client; a second acquisition step: acquiring at least one piece of second channel state information from a second communication link for communication between the wireless access point and the client under the condition that a receiving antenna of the wireless access point meets a preset condition; a processing step: processing the first channel state information to obtain a first phase difference, and processing the second channel state information to obtain a second phase difference; and a determination step: determining the position of the client according to the first phase difference and the second phase difference. By respectively acquiring two different groups of CSI, the limitation that the antenna interval of the AP is ha