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

Claim 8:
9. A method for a user device of a wireless network to synchronize a clock of the user device with a clock of a base station of the wireless network, the method comprising:
receiving, from the base station, two temporally successive resource elements comprising a first resource element and a second resource element, of a resource grid comprising subcarriers in frequency and symbol-times in time;
wherein the first resource element comprises a first signal and the second resource element comprises a second signal;
measuring a first signed amplitude of the first signal and a second signed amplitude of the second signal;
determining a signal difference comprising the first signed amplitude measurement minus the second signed amplitude measurement, and a signal sum comprising the first signed amplitude measurement plus the second signed amplitude measurement, wherein a signed amplitude is an average amplitude at a particular phase, averaged across a symbol-time;
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.