ROUTING/WAVELENGTH ASSIGNMENT METHOD IN CONSIDERATION OF INFLUENCE ON POTENTIAL CONNECTION REQUEST IN DWDM NETWORK, AND DIFFERENTIATED ROUTING/WAVELENGTH ASSIGNMENT METHOD USING CONNECTION REQUEST AND SYSTEM THEREOF

摘要

PURPOSE: A routing/wavelength assignment method in consideration of influence on potential connection request in DWDM(Dense Wavelength Division Multiplex) network, and a differentiated routing/wavelength assignment method using connection request and a system thereof are provided to quantitatively evaluate a degree of an influence on a connection request, and to determine the least influenced path, thereby reducing a blocking probability of the connection request. CONSTITUTION: If a connection request is received in an edge node(200), a service classifier checks a type of a service(205). In a routing system aspect, a routing process is conducted by values of each link wavelength SNR(210,220). If the type of the service is an assured service, a system shares a backup path to perform a protection function so as to efficiently use resources(225). If the routing process is conducted by a premium service and the assured service, the system assigns wavelengths in an FF(First-Fit) method(240). If the number of the wavelengths is smaller than that of nodes(235) or the wavelengths are not included, the connection request is blocked(255).