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:
Jan. 06, 2015
Filed:
Dec. 18, 2009
Takayuki Hama, Tokyo, JP;
Masahiro Jibiki, Tokyo, JP;
Takayuki Hama, Tokyo, JP;
Masahiro Jibiki, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A communication quality monitoring device is provided which determines communication quality deterioration by variation of a transmission buffer length in session control irrespectively of generation/non-generation of a data loss. A packet transmission and quality monitoring device-which detects deterioration in communication quality based on a buffer length of a session control protocol includes a threshold value calculating unit-which calculates a threshold value for the determination of deterioration in communication quality according to a parameter related to congestion detection of the session control protocol, and a deterioration determining unit-which determines deterioration in communication quality by comparing the threshold value and the buffer length.