公开(公告)号：US20150092640A1

公开(公告)日：2015-04-02

申请号：US14041956

申请日：2013-09-30

Applicant: Honeywell International Inc.

Inventor： Santosh Mallikarjuna Mandiganal ,  Rachana Gurunandan Rao ,  Patrick S. Gonia ,  Vincent Clarence Jacobson

IPC: H04W56/00 ,  H04W4/22 ,  H04W52/02

CPC classification number: H04W56/0015 ,  H04W4/90 ,  H04W52/02 ,  H04W52/029 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method including running a local low frequency clock in a node in a network during a battery conserving sleep mode, waking from the sleep mode at a time boundary determined by the low frequency clock, updating a representation of a master time based on a calculation and the time boundary, advancing the representation of master time based on a local high frequency clock while the node is awake, receiving a time synchronization signal from a node in the network, updating the calculation based on a difference between the representation of master time and a time provided in the time synchronization signal, setting a new time boundary, and returning to the sleep mode.

Abstract translation: 一种方法，包括在电池节省睡眠模式期间在网络中的节点中运行本地低频时钟，在由所述低频时钟确定的时间边界处从睡眠模式唤醒，基于计算更新主时间的表示，以及 时间边界，在节点唤醒时基于本地高频时钟推进主时间的表示，从网络中的节点接收时间同步信号，基于主时间表示与a之间的差异来更新计算 在时间同步信号中提供时间，设置新的时间边界，并返回睡眠模式。

公开(公告)号：US09386552B2

公开(公告)日：2016-07-05

申请号：US14041956

申请日：2013-09-30

Applicant: Honeywell International Inc.

Inventor： Santosh Mallikarjuna Mandiganal ,  Rachana Gurunandan Rao ,  Patrick S. Gonia ,  Vincent Clarence Jacobson

IPC: H04W56/00 ,  H04W52/02 ,  H04W4/22

CPC classification number: H04W56/0015 ,  H04W4/90 ,  H04W52/02 ,  H04W52/029 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method including running a local low frequency clock in a node in a network during a battery conserving sleep mode, waking from the sleep mode at a time boundary determined by the low frequency clock, updating a representation of a master time based on a calculation and the time boundary, advancing the representation of master time based on a local high frequency clock while the node is awake, receiving a time synchronization signal from a node in the network, updating the calculation based on a difference between the representation of master time and a time provided in the time synchronization signal, setting a new time boundary, and returning to the sleep mode.

Abstract translation: 一种方法，包括在电池节省睡眠模式期间在网络中的节点中运行本地低频时钟，在由所述低频时钟确定的时间边界处从睡眠模式唤醒，基于计算更新主时间的表示，以及 时间边界，在节点唤醒时基于本地高频时钟推进主时间的表示，从网络中的节点接收时间同步信号，基于主时间表示与a之间的差异来更新计算 在时间同步信号中提供时间，设置新的时间边界，并返回睡眠模式。