Hitless re-routing in composite switches
US7224706B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | May 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of the grooming traffic signals through a composite switch is disclosed that enables a traffic signal that is being transmitted between any two constituent switches to be re-routed through the composite switch without a hit (i.e., the dropping, replacing, inserting, or repeating of at least one bit in the traffic signal). This applies whether the constituent switches are adjacent in the composite switch or not. The composite switch in accordance with the illustrative embodiment comprises multiple routes between adjacent constituent switches and incorporates a mechanism that compensates for differential propagation delays along the routes. And still furthermore, the composite switch in accordance with the illustrative embodiment comprises alternative routes through different constituent switches and incorporates a mechanism that compensates for differential propagation delays through the constituent switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.