Patent ID: 9629157
Date: 2017-04-18
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method of controlling a PLL frequency selection of a PLL used in cooperation with a device of a wireless communication network, the method comprising: receiving a first set of signal measurements performed during a sliding window, while the PLL frequency has a first value; comparing the first set of signal measurements with a first threshold and, selectively switching the PLL frequency from the first value to a second value depending on a result of the comparing of the first set of signal measurements with the first threshold; receiving a second set of signal measurements during another sliding window after the PLL frequency has changed from the first value to the second value; and comparing the second set of signal measurements with a second threshold, different from the first threshold, and selectively switching the PLL frequency from the second value to the first value depending on a result of the comparing of the second set of signal measurements with the second threshold, wherein the first and second sets of signal measurements are related to a received signal power and the PLL frequency is changed from the second value to the first value when at least one third of signal measurements of the second set of signal measurements are beyond the second threshold.