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:
Feb. 01, 2022
Filed:
Feb. 15, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Ryuta Sugiyama, Tokyo, JP;
Kaoru Arai, Tokyo, JP;
Hiroki Sakuma, Tokyo, JP;
Takaaki Hisashima, Tokyo, JP;
Shunichi Tsuboi, Tokyo, JP;
Osamu Kurokawa, Tokyo, JP;
Kazuyuki Matsumura, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
[Problem] To select an optimal transmission path having a minimum total MTIE value of total MTIE values between a plurality of master apparatuses configured to transmit time information serving as a reference and a specific relay apparatus configured to receive the time information via a plurality of relay apparatuses to achieve time synchronization. [Solution] A time path selection apparatusselects a transmission path employed for time synchronization, on the basis of a MTIE value evaluated in each of relay apparatusesto, between master apparatusesandconfigured to transmit time information serving as a reference and a relay apparatusorat an edge configured to receive the time information via a relay apparatusorto achieve the time synchronization. The time path selection apparatusincludes a time information reception unitconfigured to receive the MTIE value evaluated in each of the relay apparatusesto, and an optimal path derivation unitconfigured to evaluate, on the basis of the received MTIE value, a total MTIE value for every transmission path in transmission paths between the relay apparatusand the master apparatusesandand to select and derive, as the transmission path employed for the transmission path for time synchronization, a transmission path where the total MTIE value is a minimum (170 ns).