Systems and methods of measuring latency and routing thereon in optical networks
US8774232B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2010 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Nov 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides systems and methods for making latency measurements and using these measurements in routing in optical networks. In an exemplary embodiment, a method is defined whereby two nodes sharing a line automatically determine whether both nodes are capable of making a latency measurement and then which node will initiate and which node participates in making the latency measurement. In another exemplary embodiment, an on-demand latency measurement may be made between any two arbitrary nodes within a domain. Routing messages may be used to disseminate the latency of links via a signaling and routing protocol. Advantageously, the present invention provides measurement of latency and latency variation of customer circuits (i.e., SNCs) using an in-band, non-intrusive calculation with a high-degree of accuracy. Furthermore, the present invention may consider these calculations for circuit routing based on the latency and circuit acceptance based on maximum latency restrictions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.