US 12,426,006 B2
Single cluster formation technique for ultra-wideband (UWB) time difference of arrival (TDoA)
Jerome Henry, Pittsboro, NC (US); and Pascal Thubert, Roquefort-les-Pins (FR)
Assigned to Cisco Technology, Inc.
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Apr. 4, 2023, as Appl. No. 18/295,447.
Prior Publication US 2024/0340845 A1, Oct. 10, 2024
Int. Cl. H04W 64/00 (2009.01); H04L 41/16 (2022.01); H04W 4/02 (2018.01)
CPC H04W 64/003 (2013.01) [H04L 41/16 (2013.01); H04W 4/023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
electing, from a plurality of anchors, a primary anchor;
collecting, by the primary anchor, a structure of a cluster formed by the plurality of anchors; and
building a Direction-Oriented Directed Acyclic Graph (DODAG) for the cluster based on an uncontrolled time drift along the DODAG and weighted by a number of hops to the primary anchor.