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System for establishing and maintaining a clock reference indicating one-way latency in a data network

US9130703B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9130703-B2
Application numberUS-201414305244-A
CountryUS
Kind codeB2
Filing dateJun 16, 2014
Priority dateAug 24, 2012
Publication dateSep 8, 2015
Grant dateSep 8, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A method for indicating one-way latency in a data network, with continuous clock synchronization, between first and second node having clocks that are not synchronized with each other includes a continuous synchronization session and a measurement session. The method repetitively sends predetermined synchronization messages from the first node to the second node and from the second node to the first node, calculates a round trip time for each message at the first node, updates a synchronization point if the calculated round trip time is smaller than a previously calculated round trip time, stores the updated synchronization points of a synchronization window, and calculates a virtual clock from the updated synchronization points of the synchronization window. The measurement session collects multiple measurements of one-way latency between the first and second nodes using the virtual clock, and generates a latency profile by interpolating the multiple measurements.

First claim

Opening claim text (preview).

The invention claimed is: 1. A method for indicating one-way latency in a data network, with continuous clock synchronization, between first and second nodes having clocks that are not synchronized with each other, comprising: executing a continuous synchronisation session by repetitively sending predetermined synchronization messages from the first node to the second node and from the second node to the first node, calculating a round trip time for each message at the first n…

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Frequently asked questions

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What does patent US9130703B2 cover?
A method for indicating one-way latency in a data network, with continuous clock synchronization, between first and second node having clocks that are not synchronized with each other includes a continuous synchronization session and a measurement session. The method repetitively sends predetermined synchronization messages from the first node to the second node and from the second node to the …
Who is the assignee on this patent?
Accedian Networks Inc
What technology area does this patent fall under?
Primary CPC classification H04J3/0658. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Sep 08 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).