Patent ID: 11924924
Assignee: ROSEMOUNT INC.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 29:
30. A method of ranging a plurality of tags in a system, comprising:
using accurate timing of an existing industrial time division multiple access wireless communication protocol to provide a global location network schedule for the system;
providing a plurality of anchor networks via a plurality of network anchor gateways; and
providing a plurality of fixed location anchors, each anchor directly coupled to at least one of the plurality of network anchor gateways through at least one of the plurality of anchor networks, the plurality of anchors providing a plurality of tag to anchor networks;
wherein the plurality of tags and the plurality of anchor networks have a shared sense of time;
wherein the shared sense of time is provided by a separate time source configured to provide timing information to a time division multiple access location network manager (TLNM) configured to operate the system in conjunction with ranging information from the plurality of tags received through the plurality of anchors and the plurality of network anchor gateways,
wherein time is passed from the separate time source to the TLNM and to the anchor network gateways and the anchor network gateways pass the time on to the anchors over the plurality of anchor networks, and
wherein the tag to anchor communication is independent from schedule of the wireless anchor network.