ROI-Based forwarding strategy for named data delay tolerant networking

How to obtain content efficiently is one of the challenges in NDDTN (Named Data Delay Tolerant Networking). Previous studies indicate that using social properties can improve availability of forwarding data packets. In this paper, a forwarding strategy, called RIF based on ROI (Region of Interest) is proposed for NDDTN. RIF selects relay nodes according to similarity and adjacency of ROI sets. This paper uses real mobility traces to evaluate RIF, and simulation results indicate that RIF reduces the difference of delivery ratio of about 50 percent between PLBR and epidemic, and has lower delay and overhead ratio than PLBR.