Patent ID: 11956746
Assignee: nan
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method for a receiver of a wireless network to synchronize with a base station of the wireless network, the method comprising:
receiving, from the base station, four temporally successive resource elements comprising a first resource element, a second resource element, a third resource element, and a fourth resource element of a resource grid comprising subcarriers in frequency and symbol-times in time;
wherein the first resource element comprises a first signal, the second resource element comprises a second signal, the third resource element comprises a third signal, and the fourth resource element comprises a fourth signal;
measuring a first signed amplitude of the first signal, a second signed amplitude of the second signal, a third signed amplitude of the third signal, and a fourth signed amplitude of the fourth signal;
determining a signal difference comprising the second signed amplitude measurement minus the third signed amplitude measurement, and a signal sum comprising the second signed amplitude measurement plus the third signed amplitude measurement;
determining a ratio according to the signal difference and the signal sum;
determining, according to the ratio, a timing offset; and
causing the clock of the user device to be synchronized with the clock of the base station by subtracting the timing offset from the clock of the user device.