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:
Jun. 29, 2004
Filed:
Jul. 27, 1999
Takeshi Aoki, Tama, JP;
Shinji Kikuchi, Kawasaki, JP;
Eiichi Takahashi, Kawasaki, JP;
Ken Yokoyama, Kawasaki, JP;
Tsuneo Katsuyama, Kawasaki, JP;
Tetsuya Okano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A TCP communications performance measuring device obtains an effective bandwidth (a transfer speed) representing performance in TCP communications, wherein performance indexes or both of a round trip time and a maximum segment size which are obtained based on TCP communications variable-length packets transmitted and received pursuant to a TCP (Transmission Control Protocol) defined as protocol of a transport layer of the OSI Reference model, and any one of an average congestion window size, a packet discard rate and a packet discard event rate. The measuring device therefore includes a packet monitoring unit, a performance index detecting unit a session management unit a session management table and a performance calculating unit The measuring device is capable of measuring the performance in the TCP communications on a communications route of a network without specially transmitting the multiplicity of measurement-oriented packets to the network.