Service sensitive resilient IPoWDM network and method of operation
US9337950B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Jan 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0268
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network and method of operating the network, the network comprising a transport layer that includes first and second disjoint but topologically substantially identical subnetworks A and B, each having a plurality of optical switch nodes and/or reconfigurable optical add-drop multiplexer (ROADM) nodes, and a routing layer wherein each router is coupled to at least one node in A and at least one node in B. The network is operable to provide a plurality of classes of services providing corresponding Quality of Service, and the routing layer or routing/transport interface can differentiate between traffic having different classes of service and schedule the traffic based on its service class. In the case either of the subnetworks becomes inoperable, all of the traffic is transferred to the other subnetwork, and the QoS of the classes of service is maintained by scheduling traffic to increase the delay experienced by delay-tolerant traffic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.