OPTICAL PATH DESIGN APPARATUS, OPTICAL PATH DESIGN METHOD AND PROGRAM
Provided is an optical path design device which includes a transmission quality calculation unit which estimates transmission quality of a plurality of candidate routes in an optical transmission network; and a route selection unit which selects a candidate route that satisfies the transmission quality from the plurality of candidate routes.
1 . An optical path design device comprising:
a transmission quality calculation unit which estimates transmission quality of a plurality of candidate routes in an optical transmission network; and
a route selection unit which selects a candidate route that satisfies the transmission quality from the plurality of candidate routes.
2 . The optical path design device according to claim 1 ,
wherein the route selection unit selects a candidate route having a modulation mode that can be transmitted with respect to a route length of each candidate route included in the plurality of candidate routes on the basis of information indicating a modulation mode that is usable by a device constituting the optical transmission network.
3 . The optical path design device according to claim 1 ,
wherein the transmission quality calculation unit estimates transmission times of the plurality of candidate routes, and
the route selection unit selects a candidate route satisfying a required delay requirement from the plurality of candidate routes on the basis of the estimated transmission time.
4 . The optical path design device according to claim 1 , further comprising:
a route evaluation unit which determines a route for uniformizing a utilization rate of a wavelength from the plurality of candidate routes selected by the route selection unit on the basis of information indicating a utilization situation of the wavelength of each route.
5 . The optical path design device according to claim 1 , further comprising:
a route calculation unit which derives a plurality of candidate routes on the basis of information indicating a positional relationship of the optical transmission network and information indicating a request condition of an optical path,
wherein the transmission quality calculation unit estimates the transmission quality of the plurality of candidate routes derived by the route calculation unit.
6 . An optical path design method executed by a computer, the method comprising:
estimating transmission quality of a plurality of candidate routes in an optical transmission network; and
selecting a candidate route satisfying the transmission quality from the plurality of candidate routes.
7 . (canceled)
8 . The optical path design method of claim 6 , the method comprising:
selecting a candidate route transmitted with respect to a route length of each candidate route included in the plurality of candidate routes on the basis of information indicating a modulation mode that is usable by a device constituting the optical transmission network.
9 . The optical path design method of claim 6 , the method comprising:
estimating transmission times of the plurality of candidate routes, and
selecting a candidate route satisfying a required delay requirement from the plurality of candidate routes based on the estimated transmission time.
10 . The optical path design method of claim 6 , the method comprising:
determining a route for uniformizing a utilization rate of a wavelength from the plurality of candidate routes selected based on information indicating a utilization situation of the wavelength of each route.
11 . The optical path design method of claim 6 , the method comprising:
deriving a plurality of candidate routes based on information indicating a positional relationship of the optical transmission network and information indicating a request condition of an optical path,
wherein the transmission quality of the plurality of candidate routes is estimated and derived.
12 . The optical path design device according to claim 1 , wherein the route selection unit determines a candidate route based on the transmission distance of the route and the transmission quality value stored in a transmission quality database.
13 . The optical path design device according to claim 4 , wherein the route evaluation unit evaluates the determined candidate routes and selects one route or prioritize the candidate routes.
14 . An optical path design system comprising:
at least one processor; and
memory storing instructions that, when executed by the at least one processor, causes the system to perform a set of operations, the set of operations comprising:
estimating transmission quality of a plurality of candidate routes in an optical transmission network; and
selecting a candidate route that satisfies the transmission quality from the plurality of candidate routes.
15 . The optical path design system of claim 14 , further comprising:
selecting one candidate route from candidate route information; and
determining a transmittable modulation mode based on length of the selected candidate route.
16 . The optical path design system of claim 15 , further comprising:
determining the modulation mode capable of transmitting the selected candidate route; and
the selected candidate route information is deleted from a candidate route information database when there is no modulation mode that allows transmission of the selected candidate route is identified.
17 . The optical path design system of claim 15 , further comprising:
determining whether the selected candidate route satisfies transmission quality corresponding to delay requirement of the optical path and the modulation mode; and
the selected candidate route information is deleted when the selected candidate route does not satisfy the optical path delay and the modulation mode.
18 . The optical path design system of claim 15 , further comprising:
determining a bit rate of the selected modulation mode and number of optical paths for each selected candidate route; and
deriving a number of carriers based on the determined bit rate.
19 . The optical path design system of claim 15 , further comprising:
deriving allocation wavelength for each selected candidate route;
compares maximum wavelength number among one or more wavelength numbers assigned to each selected candidate route; and
determines the candidate route having a smallest wavelength number.
20 . The optical path design system of claim 15 , wherein output of the selected candidate route indicates a best route based on the transmission quality of the optical path.