Patent ID: 11876662
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. The signal demodulation method according to claim 5, wherein determining, by the terminal device, the first carrier frequency based on the first signal to interference plus noise ratio and the second signal to interference plus noise ratio further comprises:
determining, by the terminal device, the second carrier frequency corresponding to the first tracking reference signal;
determining, by the terminal device, the third carrier frequency corresponding to the second tracking reference signal; and
when an absolute value of a difference between the second carrier frequency and the third carrier frequency is greater than or equal to a frequency offset threshold, determining, by the terminal device, the first carrier frequency based on the first signal to interference plus noise ratio and the second signal to interference plus noise ratio.