Performance evaluation of distributed-controlled dynamic wavelength-conversion GMPLS networks

摘要

This paper presents the performance of distributed-controlled dynamic wavelength-conversion (DDWC) optical networks based on our simple route and wavelength assignment (RWA) policy. A source node first chooses an optical-path route by using aggregated optical link-state information, then sends a signaling message on the selected route, after which wavelength assignment is performed. If wavelength conversion is needed at a transit node, the wavelength is adaptively converted by using trunk-type wavelength converters. The advertised information overhead incurred by the routing protocol and the cost processing incurred in solving the complicated RWA problem at the source node are reduced. We show via simulations that the performance of the DDWC network with our simple RWA policy emulates that of the WC network with small number of trunk-type wavelength converters.