US 11,877,256 B2
Method and system for determining the position of at least one node in a communication network
Michael Schober, Graz (AT); Christian Eisendle, Graz (AT); and Ghiath Al-kadi, Graz (AT)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Aug. 27, 2021, as Appl. No. 17/458,752.
Claims priority of application No. 20198555 (EP), filed on Sep. 25, 2020.
Prior Publication US 2022/0104166 A1, Mar. 31, 2022
Int. Cl. H04W 64/00 (2009.01); H04W 56/00 (2009.01)
CPC H04W 64/00 (2013.01) [H04W 56/0015 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for determining the position of at least one node in a communication network, wherein the communication network comprises a localization system that includes a processing unit, a primary anchor and at least one secondary anchor, the method comprising:
the primary anchor transmits a poll message to the node and to the secondary anchor;
the primary anchor receives a response message from the node;
the secondary anchor receives said poll message from the primary anchor and said response message from the node;
the processing unit calculates the position of the node using position information and timing information, wherein said position information is position information of the primary anchor and of the secondary anchor, wherein said timing information is timing information of the poll message transmission by the primary anchor, of the poll message reception by the node and the secondary anchor, of the response message transmission by the node, and of the response message reception by the primary anchor and the secondary anchor, and wherein the node is kept in a low-power state when no messages are expected to be received.