Patent · US Active

Method and software defined network controller for performing round-trip time determination between a source element and a target element

US11451458B2 · kind B2 · utility

0Cited by

1References

15Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Fabian Schneider · Darmstadt, DE
Anton Matsiuk · Hamburg, DE
Dimitrios Gkounis · Kingston upon Thames, GB

Key dates

Filing date	Dec 13, 2016
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Sep 10, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04L45/64
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method performs round-trip time determination between a source element and a target element, the source element is a forwarding element of a software defined network, which also includes a software defined network controller for controlling the forwarding elements. The method includes: instructing the source element to install a low priority detection rule, the low priority detection rule being triggerable by an incoming pong probe packet; instructing the source element to install at least one high priority detection rule having a timeout period, the high priority detection rule being triggerable by the incoming pong probe packet; instructing the source element to send a ping probe packet from the source element to the target element; deriving an estimate range for the round-trip time based on the detection rule being triggered by the pong probe packet received by the source element from the target element in response to the ping probe packet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.