公开(公告)号：US10972983B2

公开(公告)日：2021-04-06

申请号：US16075752

申请日：2017-02-02

Applicant: Nokia Solutions and Networks Oy

Inventor： Andrew Killen ,  Alex Hirsbrunner ,  Kirk Ingemunson ,  William Walsh

IPC: H04W52/02 ,  G01K1/022 ,  G01K3/10

Abstract: A method and apparatus may include activating, by a network node, power of a global-positioning-system receiver or power of an active antenna of the global-positioning-system receiver. The apparatus uses the global-positioning-system receiver to perform synchronization of the apparatus. The method may include receiving at least one measurement, wherein the at least one measurement includes real-time, predictive, or historic data. The method may also include determining a holdover duration based on the at least one measurement. The holdover duration corresponds to a length of time where the power of the global-positioning-system receiver or the power of the active antenna is to be turned off. The method may also include deactivating the power of the global-positioning-system receiver or the power of the active antenna for the holdover duration.