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

Claim 2:
3. The timing advance update method according to claim 2, wherein
that the terminal obtains a transmission delay TA offset based on the round-trip transmission delay change rate and a unidirectional transmission delay between the satellite and the location corresponding to the geocentric angle data is performed according to the following formula:

ΔTAtrans=T′α×ttrans, wherein

ΔTAtrans represents the transmission delay TA offset, and ttrans represents the unidirectional transmission delay between the satellite and the location corresponding to the geocentric angle data, and wherein
that the terminal obtains a TA offset based on the round-trip transmission delay change rate, a unidirectional transmission delay between the satellite and the location corresponding to the geocentric angle data, and current TA update period duration is performed according to the following formula:

ΔTA=T′α×(ttrans×tupdate), where

ΔTA represents the TA offset, and tupdate represents the current TA update period duration.