公开(公告)号：US20170238257A1

公开(公告)日：2017-08-17

申请号：US15046130

申请日：2016-02-17

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Andrew KILLEN ,  Alex HIRSBRUNNER ,  Kirk INGEMUNSON ,  William WALSH

IPC: H04W52/02

CPC classification number: H04W52/0261 ,  G01K1/022 ,  G01K3/10 ,  G01V2200/12 ,  H04W52/0206 ,  Y02D70/1262 ,  Y02D70/164

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 comprises 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.

公开(公告)号：US20190053164A1

公开(公告)日：2019-02-14

申请号：US16075752

申请日：2017-02-02

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Andrew KILLEN ,  Alex HISBRUNNER ,  Kirk INGEMUNSON ,  William WALSH

IPC: H04W52/02

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.