Apparatus and method for avoiding system losses for M2M devices operating at longer slot cycle

摘要

Aspects of the present disclosure are directed to an apparatus and methods capable of pre-correcting reacquisition slew of pilot signal timing when a mobile device operates in a slotted mode or discontinuous reception (DRX) mode. In one aspect, a mobile device is operated in slotted mode. The mobile device wakes up to perform a pilot reacquisition corresponding to a slotted mode and detects a slew of a pilot timing relative to a pilot reference timing. The mobile device adjusts a subsequent pilot reference timing by an amount corresponding to the detected slew, to be utilized during a subsequent wake-up cycle. The mobile device returns to a sleep state to wait for the subsequent wake-up cycle. Other aspects, embodiments, and features are also claimed and described.

主权项

1. A method of wireless communication operable at a mobile device, comprising:
waking up to perform a pilot reacquisition corresponding to a slotted mode; during initial boot up, setting a size of a reacquisition window at a first window size greater than a default window size; detecting a slew of a pilot timing relative to a pilot reference timing; when the pilot timing is within a predetermined shift from a center of the reacquisition window, reducing the size of the reacquisition window to the default window size; adjusting a subsequent pilot reference timing by an amount corresponding to the detected slew, to be utilized during a subsequent wake-up cycle; and returning to a sleep state to wait for the subsequent wake-up cycle.