Uplink multi-station channel estimation method, station, and access point

An uplink multi-station channel estimation method, applied to an access point (AP) communicating with a plurality of stations (STAs), the uplink multi-station channel estimation method comprising:

• receiving, by the AP, a frame sent by each STA of the plurality of STAs, the frame comprising a first group of training sequences and a second group of training sequences;
• calculating a frequency offset value between the each STA and the access point AP to generate a plurality of frequency offset values, the calculating using the first group of training sequences and the second group of training sequences;
• and
• performing, by the AP, channel estimation based on the plurality of frequency offset values between the plurality of STAs and the AP.

A station, comprising:

• a memory storing instructions;
• and
• at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to perform the following steps:
• generate a frame, the frame comprising a first group of training sequences and a second group of training sequences;
• and
• send the frame to the AP, the first group of training sequences and the second group of training sequences are used for calculating a frequency offset value between a station (STA) and the AP, and the frequency offset value is used for channel estimation.

A access point (AP), comprising:

• a memory storing instructions;
• and
• at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to perform the following steps:
• receive a frame sent by each station (STA) of a plurality of STAs, the frame comprising a first group of training sequences and a second group of training sequences;
• calculate a frequency offset value between the each STA and the access point AP to generate a plurality of frequency offset values, the calculating using the first group of training sequences and the second group of training sequences;
• and
• perform channel estimation based on the plurality of frequency offset values between the plurality of STAs and the AP.