The performance analysis of different Delay Tolerant Networks (DTNs) routing mechanisms plays a key role in understanding the design of DTNs. It gives the capacity to describe the conduct and execution of routing protocols, which encourages one to choose proper routing protocol for the application or the system under control. DTNs routing protocols have differ in the knowledge that they use in making routing decision and the number of replication they make. The performance of different DTNs routing protocols (i. e. , Direct Delivery, First Contact, Epidemic, Spray and Wait, Prophet and MaxProp) are compared under the various mobility models like Random Waypoint (RWP) model, Map-Based Mobility (MBM) Model, the Shortest Path Map-Based Movement (SPMBM) model and Random Walk (RW) model. Among these protocols, the first four routing protocols do not require any knowledge about the network. The latter two protocols use some extra information to make decisions on forwarding.

1. K. Fall, "A Delay-Tolerant Network Architecture for Challenged Internets," Proc. On Applications, Technologies, Architectures and Protocols for Computer Communications (SIGCOMM), New York, USA, 2003, pp. 27–34.
2. J. Burgess, B. Gallagher, D. Jensen, and B, Levine, "Maxprop: Routing for Vehicle-Based Disruption-Tolerant Networks," Proc. 25th IEEE International Conference on Computer Communications, Barcelona, Spain, 2006, pp. 1–11.
3. Z. Zhang, "Routing in intermittently connected mobile ad hoc networks and delay tolerant networks: Overview and challenges," IEEE Communication Surveys and Tutorials 8, vol. 4, 2006, pp. 24-37
4. L. Pelusi, A. Passarella, and M. conti, Opportunistic networking: Data forwarding in disconnected mobile ad hoc networks," IEEE Comm. Magazine, 2006.
5. T. Spyropoulos, K. Psounis, and C. S. Raghavendra, "Single-copy routing in intermittently connected mobile networks," Proc. 1st Annual IEEE Communications Society Conference on Sensor and Ad Hoc Communications and Networks, IEEE SECON-'04'. 2004.
6. A. Keränen, et al. , "The ONE Simulator for DTN Protocol Evaluation," Proc. 2nd International Conference on Simulation Tools and Techniques (Simutools'09), Belgium, 2009.
7. A Vahdat, D. Becker, "Epidemic Routing for Partially Connected Ad Hoc Networks," Technical ReportCS-200006, Duke University, 2000.
8. A. Lindgren, et al. , "Probabilistic Routing in Intermittently Connected Networks," Proc. SIGMOBILE Mob. Computer. Commun. Rev. 7, 3. 2003, pp. 19-20.
9. T Spyropoulos, K. Psounis, and C. S. Raghavendra, "Spray and Wait: An Efficient Routing Scheme for Intermittently Connected Mobile Networks," Proc. ACM SIGCOMM workshop on Delay-Tolerant Networking (WDTN '05) ACM, New York, NY, USA, 2005 pp. 252-259.
10. A Ker¨anen, "Opportunistic network environment simulator. Special assignment report, helsinki university of technology," Department of Communications and Networking, May 2008.
11. Tkk/Comnet. Project page of the ONE simulator. [Online]. Available: http://www. netlab. tkk. fi/tutkimus/ dtn/theone, 2009.
12. V. K. Samyal, S. S. Bamber and N. Singh, "Impact of Buffer Size on Delay Tolerant Network Routing Protocols," Proc. Australian Journal of Information Technology and Communication, Vol. II Issue I. , 2015, pp. 44-47.

Delay Tolerant Networks (dtns) Routing Protocols Mobility Models Opportunistic Network Environment (one)