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1. (WO2018102096) PREVENTING A NETWORK FROM PROPAGATING INCORRECT TIME INFORMATION

Pub. No.:    WO/2018/102096    International Application No.:    PCT/US2017/060788
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Fri Nov 10 00:59:59 CET 2017
IPC: H04J 3/06
H04W 84/18
H04W 12/06
H04L 12/24
H04Q 9/00
H04L 9/32
Applicants: LANDIS+GYR INNOVATIONS, INC.
Inventors: BETTENDORFF, John
DESHMUKH, Pushpesh, Kumar
Title: PREVENTING A NETWORK FROM PROPAGATING INCORRECT TIME INFORMATION
Abstract:
Prior to joining a device to a network, the device is connected to an external system via a local connection. The external system provides the device with a local time stamp that includes a local time value and a local time error value. The device may use the time information to communicate with the external system. After the device is joined to the network, the device may transmit a communication on the network that includes time information. If so, then the communication includes a time value based on the device's time value and a time error value set to a value indicating a maximum error. The network is protected from potentially poor quality time information. Any device that receives the communication rejects the time information since the time error value indicates a maximum error.