公开(公告)号：US20180139006A1

公开(公告)日：2018-05-17

申请号：US15354811

申请日：2016-11-17

Applicant: Google Inc.

Inventor： Xiangjun Zhao ,  Cedric Fung Lam ,  Shuang Yin ,  Changhong Joy Jiang ,  Ke Dong

IPC: H04J14/02 ,  H04Q11/00

CPC classification number: H04J14/0295 ,  H04J14/0246 ,  H04J14/0249 ,  H04J2014/0253 ,  H04Q11/0067 ,  H04Q2011/0081 ,  H04Q2011/0083

Abstract: A method of establishing communication between an optical line terminal and an optical network unit within an optical access network includes receiving a signal indication from an optical transceiver of an optical line terminal. The signal indication includes: (i) a loss-of-signal indication indicating non-receipt of an upstream optical signal from the optical network unit; or (ii) a signal-received indication indicating receipt of the upstream optical signal from the optical network unit. The method includes determining whether the signal indication includes the loss-of-signal indication. When the signal indication includes the loss-of-signal indication, the method includes instructing the optical transceiver to cease signal transmission from the optical transceiver to the optical network unit. Moreover, when the signal indication includes the signal-received indication, the method includes instructing the optical transceiver to transmit a downstream optical signal from the optical transceiver to the optical network unit.

公开(公告)号：US09453920B1

公开(公告)日：2016-09-27

申请号：US15002500

申请日：2016-01-21

Applicant: Google Inc.

Inventor： Zixia Huang ,  Marvin Weinstein ,  Nicholas Ng ,  Ke Dong ,  Cedric Fung Lam ,  Tony Ong ,  Wenlei Dai

IPC: H04B10/08 ,  G01S19/28 ,  G01S19/05

CPC classification number: G01S19/28 ,  G01S19/05 ,  G01S19/23 ,  H04B10/0791 ,  H04B10/118

Abstract: A method for selecting a global positioning receiver includes receiving global positioning system signals from global positioning system receivers. The global positioning system receivers receive the global positioning system signals from corresponding global positioning system satellites. The method also includes replicating the global positioning system signals from the global positioning system receivers, determining a signal drift and a phase precision for each global positioning system signal, and selecting one of the global positioning system signals based on the corresponding signal drift and the phase precision of the global positioning system signal.

Abstract translation: 用于选择全球定位接收机的方法包括从全球定位系统接收机接收全球定位系统信号。 全球定位系统接收机从相应的全球定位系统卫星接收全球定位系统信号。 该方法还包括从全球定位系统接收器复制全球定位系统信号，确定每个全球定位系统信号的信号漂移和相位精度，以及基于对应的信号漂移和相位选择全球定位系统信号之一 精准的全球定位系统信号。