Improving the performance of reconfigurable WDM lightwave networks with deflection routing via node reassignment

We consider the problem of improving the throughput and the packet delay of reconfigurable WDM optical networks under deflection routing. Previous results showed that the performance of WDM networks under store-and-forward routing can be improved by properly assigning the network nodes to network locations. Here we apply this reassignment method to networks with deflection routing and formulate the problem as a quadratic assignment problem. We use a heuristic algorithm to solve the problem. Numerical results show that this approach reduces the packet delay in a ring network significantly