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:
Sep. 05, 2023
Filed:
Jun. 20, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Hiroto Takechi, Musashino, JP;
Hideki Maeda, Musashino, JP;
Daisaku Shimazaki, Musashino, JP;
Masaaki Inami, Musashino, JP;
Katsuhiro Araya, Musashino, JP;
Masatoshi Namiki, Musashino, JP;
Masahiro Yokota, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A transmission device () includes a flow table () that stores identification information about an uninterruptible target flow; a transmission-side identification unit () that identifies whether a received packet is from the target flow or a non-target flow based on whether the received packet matches the identification information about the target flow stored in the flow table (); a tag application unit () that applies, to packets from the target flow, an uninterruptible identifier indicating that the packets are from the target flow and a sequence number for distinguishing the packets from other packets; and a branch unit () that branches the packets from the target flow processed by the tag application unit () into packets to be transferred to an active path () among redundant routes and packets to be transferred to a backup path () among the redundant routes.