Christopher Aaron Calvert

US Patent:

20170099218, Apr 6, 2017

Filed:

Aug 31, 2016

Appl. No.:

15/252514

Inventors:

- Alpharetta GA, US
Christopher Sean Calvert - Roswell GA, US

International Classification:

H04L 12/721
H04L 12/707
H04L 12/44
H04L 12/751

Abstract:

The determination and advertisement of a node's rank in an RF mesh network reflects sustained network changes. A node's advertised rank may be based on the node's induced rank and a previous rank candidate. Induced rank is the rank of the node at a particular point in time. Rank candidate is based on a running average of the node's past rank. The advertised rank may be based on a weighted sum of the induced rank and a previous rank candidate. Induced rank may consider a Link Quality Indicator (LQI), which may be based on a running average LQI.

US Patent:

20150245248, Aug 27, 2015

Filed:

Feb 20, 2015

Appl. No.:

14/627356

Inventors:

- Alpharetta GA, US
Christopher Calvert - Roswell GA, US

International Classification:

H04W 28/08
H04W 72/04
H04W 24/02
H04W 40/24

Abstract:

A node receives status data associated with a current collector in the network, where the node is active on the current collector. The node also receives status data associated with a candidate collector in the network, where the node is not active on the candidate collector. An analysis of the status data of the collectors is generated, where the analysis includes at least comparing respective network loads reported in the received status data. An optimal collector is determined from among the current collector and the candidate collector. The determination of the optimal collector is based at least in part upon the analysis of the status data of the collectors. The node remains active on the current collector when the current collector is determined to be the optimal collector, and the node becomes active on the candidate collector when the candidate collector is determined to be the optimal collector.

US Patent:

20150245287, Aug 27, 2015

Filed:

Feb 26, 2015

Appl. No.:

14/631922

Inventors:

- Alpharetta GA, US
Christopher Calvert - Roswell GA, US

International Classification:

H04W 52/02
H04W 72/04
H04W 56/00

Abstract:

Systems and methods are provided for maintaining a low power endpoint (LPE) synchronized on a time synchronized channel hopping network (TSCH). An LPE receives a guaranteed time slot (GTS) from a parent node. The LPE determines a wake-up time that coincides with or is prior to the GTS. The LPE enters a low power mode to conserve power until the wake-up time occurs. At that time, the LPE enters a regular power mode and may communicate with the parent node.