Design Assumptions and Evaluation of Delay Tolerant Network Routing protocols; a Comparative Study

Author(s): Edmond Yeboah Gyampoh


The aim of the work in this study is to comprehensively discuss the key assumptions considered in the design and evaluation of DTN routing protocols.


  • This study surveyed fifteen well known opportunistic DTN protocols and gives a comparison of them with respect to their design and evaluation practices.
  • Key research trends in light of the comparison made are discussed and directions for future research proposed .


The key findings are;

  • Existing protocols focus largely on the prioritization of packets as opposed to the selectivity of nodes /node priority.
  • Packet priority metrics do not consider service priority.
  • Protocols that consider node priority metrics large ignore the resource capacity of nodes.
  • Storage/buffer space and node bandwidth not considered as direct metric inputs.
  • Protocols that consider energy consumption as a direct performance metric report only communication energy and not mobility and computation energy.

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