Dynamic path-protected service provisioning in optical transport networks with a limited number of add/drop ports and transmitte

Abstract— We consider path-based survivable service provisioning in transparent optical networks with the constraints of wavelength continuity and a limited number of add/drop ports at each OXC node in the presence of limited tunability of transmitters. We develop simple but valid analytical models to estimate the effects of number of add/drop ports and transmitter tunability on survivable service provisioning performance. We propose effective algorithms for the assignments of wavelength resources and add/drop ports for each survivable connection service and conduct simulations to evaluate the impacts of number of add/drop ports and transmitter tunability on pathbased survivable service provisioning and further to examine the validity of the analytical models. It is found that a certain system add/drop ratio is required at each node so as to eliminate the blocking due to the lack of free add/drop ports. A network with a higher density requires a larger relative number of add/drop por...

• Type: Journal
• Year: 2007
• Where: JSAC
• Authors: Gangxiang Shen, Wayne D. Grover
• Keywords: Analytical Models, JSAC 2007, Ports, Survivable Service