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.
Patent No.:
Date of Patent:
Mar. 24, 2026
Filed:
May. 26, 2021
Ntt, Inc., Tokyo, JP;
Kojun Koshiji, Tokyo, JP;
Hanami Yokoi, Tokyo, JP;
Yasuharu Kaneko, Tokyo, JP;
Tatsuya Matsukawa, Tokyo, JP;
Mika Ishizuka, Tokyo, JP;
Takafumi Hamano, Tokyo, JP;
NTT, Inc., Tokyo, JP;
Abstract
A route search device includes a memory and a processor configured to divide a communication network including a plurality of nodes and an edge connecting the nodes into a plurality of areas based on information of the nodes, and create a first network graph that represents a connection relationship between the areas; search for one or more first routes from a start point area including a start point node to an end point area including an end point node using the first network graph; and search for one or more second routes from the start point node to the end point node using a second network graph that represents a connection relationship between the nodes and the edge in areas included in the first routes.