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:
Jul. 18, 2017
Filed:
Jan. 16, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Yuta Teranishi, Kawasaki, JP;
Koichiro Yamashita, Kawasaki, JP;
Takahisa Suzuki, Kawasaki, JP;
Hiromasa Yamauchi, Kawasaki, JP;
Koji Kurihara, Kawasaki, JP;
Toshiya Otomo, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A position estimation apparatus acquires, for base devices, the number of hops from a target sensor node to a base device. The position estimation apparatus calculates, for each base device, a distribution of estimated distances corresponding to the total hops, based on the number of hops and a distribution of estimated distances stored in a storage device. The position estimation apparatus calculates, for each base device, a distribution of estimated positions within a given region, based on the distribution of estimated distances, information concerning a range of the given region, and information concerning a position of the base device. The position estimation apparatus calculates an index that indicates a probability of a position of the target sensor node within the given region, based on the sum of distributions of estimated positions concerning the base stations.