Landis+Gyr Innovations, Inc.
|Landis+Gyr Innovations, Inc. Patent applications|
|Patent application number||Title||Published|
|20150244513||Clock Drift Compensation in a Time Synchronous Channel Hopping Network - Disclosed are various embodiments for compensating for clock drift between nodes in a time synchronous network. A node receives time synchronization information from a parent node in the network. A drift between a clock of the node and a clock of the parent node is determined based upon the time synchronization information. The node identifies a number of time slots of the network since making a last time synchronization based on previous time synchronization information transmitted from the parent node. A compensation interval is calculated that represents a number of the time slots over which the clock of the node deviated, with respect to the parent node, by a predefined compensation value. The node compensates, by the compensation value, one of the time slots according to the compensation interval.||08-27-2015|
|20150244415||SYSTEM AND METHOD FOR TIME ADJUSTMENT IN A TIME SYNCHRONIZED CHANNEL HOPPING NETWORK - Systems and methods are provided for adjusting time in a synchronized network by a central device on the network. Each device on the network provided current time, hopping pattern, time slot duration, and an absolute slot number. Devices on the network synchronized to communicate on a repeating schedule of time slots. The central device receives an updated time and determines a time difference between the updated time and the current time. The current time is adjusted in integer multiples of the hopping pattern length up to the time difference. The absolute slot number is updated based on the number of time slots in the adjusted time difference. The updated absolute slot number is propagated to other devices on the network. In turn, these other devices may also propagate the updated absolute slot number.||08-27-2015|
Patent applications by Landis+Gyr Innovations, Inc.