Cognition represents one of the ingredients to make up the future high-capacity heterogeneous optical networks. This paper provides three main contributions for a preliminary study of a Control and Management System (CMS) able to support the cognitive entity, named Cognitive Decision System (CDS). First of all, two architectural approaches to realize a cognitive optical network are presented. Secondly, the focus is set on the description of a centralized GMPLS-based CMS architecture and on the interactions between its modules and the CDS. In particular, the CDS decisions rely on a database updated by CMS protocols (i.e., by OSPF-TE) to grasp information about network configuration and resources availability. Unfortunately, OSPF-TE may not be able to timely update the CDS-database. To address this issue, the paper presents two CDS-database updating policies and compares their performance through simulations. Finally, a set of open issues and challenges is detailed in order to provide an input for a deep analysis of the presented CMS architecture.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.