Cost-Efficient Transparent Optical Networks with High Connection Availabilities

Transparent optical networks have to be designed cost-efficiently in order to survive in the highly competitive telecommunication network market. In this talk we discuss the power of mathematical optimization techniques to obtain such designs. One aspect that deserves particular attention in transparent optical networks is the availability of connections. Several survivability concepts have been developed over the years. We compare the concepts 1+1 dedicated path protection, shared path protection and the recently introduced concept demand-wise shared protection (DSP) on the network cost and connection availabilities. The results show that DSP obtains nearly the same network availability against significantly less cost