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:
Nov. 01, 2016
Filed:
Nov. 12, 2013
Hitachi, Ltd., Tokyo, JP;
Yoshiteru Takeshima, Tokyo, JP;
Osamu Namiki, Tokyo, JP;
Yukio Ogawa, Tokyo, JP;
Yukiko Takeda, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a communication system in which a plurality of communication apparatuses perform communication via a communication network, a network abnormality detection system dynamically creates a monitoring rule during operation without defining information (monitoring rule) regarding communication to be monitored in advance and perform a collection process and an abnormality determination process quickly even when an amount of information to be monitored is vast. The network abnormality detection system copies packets transmitted at predetermined measurement positions in the communication network, calculates communication statistics information at each measurement position from the copied packets, analyzes one or more pieces of communication statistics information, and detects occurrence of communication abnormality.