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:
May. 04, 2021
Filed:
Mar. 21, 2017
Nec Corporation, Tokyo, JP;
Anan Sawabe, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A communication system according to the present invention includes: a transmission-side apparatus that transmits a packet train composed of a plurality of estimation packets for estimating an available bandwidth; and a reception-side apparatus that receives the packet train, stores one or more lower-limit expansion ideal curves, one or more in-range ideal curves, and one or more upper-limit expansion ideal curves; calculates an actual amount of increase in delay occurring in the respective estimation packets based on a reception time of the estimation packet; selects an ideal curve most similar to the increase tendency of a delay indicated by the calculated amount of increase in delay, from among the lower-limit expansion ideal curve, the in-range ideal curve, and the upper-limit expansion ideal curve; and estimates the available bandwidth, based on a selection result on the ideal curve.