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:
Aug. 06, 2013
Filed:
Mar. 23, 2009
Svante Ekelin, Vallentuna, SE;
Erik Bergfeldt, Norrköping, SE;
Christofer Flinta, Stockholm, SE;
Andreas Johnsson, Uppsala, SE;
Jan-erik Mångs, Solna, SE;
Bob Melander, Sigtuna, SE;
Svante Ekelin, Vallentuna, SE;
Erik Bergfeldt, Norrköping, SE;
Christofer Flinta, Stockholm, SE;
Andreas Johnsson, Uppsala, SE;
Jan-Erik MÅngs, Solna, SE;
Bob Melander, Sigtuna, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
A system and method for determining end-to-end available bandwidth of a path in a packet-switched communication network. A multi-rate packet chirp injector injects probe traffic packets at different probing rates, u, into the network utilizing a probe chirp. A receiver samples time separation of the probe traffic packets to generate time-separation samples, which are used to calculate relative inter-packet separation strain, ε, samples at different probing rates. An Expectation-Maximization, EM, analyzer utilizes an EM algorithm to identify useful strain ε samples and to estimate parameters of a line lrepresenting a direct linear relationship between the probing rate and the inter-packet separation strain ε at probing rates greater than a break point. A filter such as, for example, a Kalman filter then determines the available bandwidth of the network path based on the estimated parameters of the line l.