Patent ID: 11962486
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of selecting an end-to-end path across a plurality of domains in a communication network, the method comprising:
receiving a request for a path across the plurality of domains;
computing, in a network control entity, the end-to-end path across the plurality of domains as part of a hierarchical path computation, wherein computing the end-to-end path comprises determining that a stored path matches one or more criteria of the end-to-end path, wherein the stored path is the end-to-end path across the plurality of domains, and, in response to said determining, using the stored path for the end-to-end path computation; and
transmitting information indicating at least part of the stored path to a domain control entity configured to control one of the plurality of domains involved in the end-to-end path.