SDN-DTN Combined Architecture in Post Disaster Scenario — A new way to start

The concept of SDN enables revolutionary automation and policy based management in the era of networking. In these phenomena, there is no vendor's specification to implement the new features over the network system. Delay-tolerant networking (DTN) is a type of wireless ad-hoc network. It works when the end to end direct path does not exist between source and destination then it's using the Store and Forwarding routing mechanism. This research study will propose a new architecture with the combination of SDN (Software Defined Networking) and DTN (Delay Tolerant Network) which has four layers Victim node, DTN Layer, DTN Tend and Control station. Victim nodes are simple DTN enables devices such as PDA, smartphone. DTN layer is the combination of bundle storage and convergence layer. DTN Tend is a monitoring application where it will monitor the whole network and give feedback to the controller so that the controller can decide for better performance. For the simulation of this proposed model was evaluated by using Mininet-WiFi. According to the simulation result on the best case scenario the message delivery rate is 99.540% and packet loss is 0.460%. Though this proposed architecture has few limitations such as no priority has been set between defined services, if all defined service requests come at a time then it will be FCFS based.