Patent ID: 11968640
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The timing advance update method according to claim 6, wherein when the distance between the terminal and the satellite is greater than or equal to a second communication distance, and wherein the second communication distance is greater than the first communication distance:
the calculating, by the terminal, a frame TA offset of each frame of data based on the TA compensation information and a ratio of the TA update period to a data frame length comprises:
calculating, by the terminal, the frame TA offset based on the minimum TA offset, the minimum transmission delay TA offset, and the ratio of the TA update period to the data frame length of the to-be-sent uplink data, and

the performing, by the terminal, TA compensation on a TA of each frame of data in the TA update period based on the frame TA offset comprises:
selecting, by the terminal, a negative value of an absolute value of the minimum transmission delay TA offset;
subtracting (N−1) frame TA offsets from the negative value of the absolute value of the minimum transmission delay TA offset; and
performing TA compensation on the TA of each frame of data in the TA update period, wherein N is a sequence number of a data frame, and N is an integer greater than or equal to 1.