A survey paper on routing in delay-tolerant networks

This paper presents a comprehensive survey on delay-tolerant networks, an architecture originally designed for the Interplanetary Internet, this delay-tolerant networks is a communication system used to provide Internet-like services in interplanetary distances to support of deep space exploration. This paper describes the basic of Delay-Tolerant Networks (DTN) and its different areas. It also explores the routing techniques used in Delay-Tolerant Networks (DTN). It also comprises the comparison of different routing protocols in Delay-Tolerant Networks (DTN). At last, based on shortcoming of existing protocol, this paper presents the problem definition for new work.