The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 09, 2023

Filed:

Dec. 14, 2021
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Si Bin Fan, Beijing, CN;

Yu Gu, Austin, TX (US);

Su Liu, Austin, TX (US);

Cheng Xu, Beijing, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 64/00 (2009.01); H04L 43/10 (2022.01); G01S 19/13 (2010.01); H04L 43/0864 (2022.01); G01S 5/00 (2006.01); H04L 9/40 (2022.01); G01S 19/42 (2010.01); H04L 61/5007 (2022.01); H04L 101/69 (2022.01);
U.S. Cl.
CPC ...
H04W 64/006 (2013.01); G01S 5/0027 (2013.01); G01S 19/13 (2013.01); H04L 43/0864 (2013.01); H04L 43/10 (2013.01); G01S 19/42 (2013.01); H04L 61/5007 (2022.05); H04L 63/1408 (2013.01); H04L 2101/69 (2022.05);
Abstract

Systems and methods of the present disclosure provide techniques to locate target devices. An electronic message is sent to a set of landmark devices, signaling each landmark device to transmit echo-request packets to a target device and to other landmark devices and measure network-communication delays. Indications of the network-communication delays are received from the set landmark devices. A first sequence is formed by sorting the set of landmark devices relative to the network-communication delays between the target device and each landmark device. For each respective landmark device, an additional sequence is formed by sorting other landmark devices relative to the network-communication delays between the respective landmark device and the other landmark devices. A sequence-matching operation is applied to the first sequence and the additional sequences to form a ranking of the set of landmark devices relative to the target device.


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