No abstract

No abstract

The main objective of DTN routing is to transfer the message to the largest extent. In another words, the delivery ratio is the most important evaluation index of DTN routing. The priority of data package in DTN network is the degree of importance of the data package and data packages with different priorities shall have different delivery ratios to differentiate their degree of importance. RMRP algorithm in the Thesis achieves the service differentiation by priority on the basis of ensuring that data with various priorities can be delivered with their respective probability in accordance with the forwarding probability of each node. The experiment indicates that the network performance sacrificed by the data with high priority can be made up by data with low priority. If the difference between the volume of data with high and low priority is not significant, the performance can be maintained stable while the whole DTN network achieves service differentiation.