Delay/Disruption Tolerant Networking (DTN) is an approach to computer network architecture that seeks to address the technical issues in heterogeneous networks that may lack continuous network connectivity. Disruption may occur because of the limits of wireless radio range, sparcity of mobile nodes, energy resources, attack, and noise. Examples of such networks are those operating in mobile or extreme terrestrial environments, or planned networks in space such as sensor networks, vehicular networks, military networks and inter-planetary networks.
Mobility is the key parameter that has an effect on the performance of DTNs. Our group investigates link opportunity due to mobility pattern of nodes. Also, we focus on developing optimal resource allocation for DTNs.



Research Topics
- Mobility model [Levy-walk, SLAW]
- Mobile data offloading
- Vehicle-to-Vehicle networks
- Resource allocation / Routing in DTNs
- Testbed implementation

Research Members
Ph.D: Jaesung Jeong, Joohyun Lee
MS: Seokhyun Kim, Okyoung Choi, Youngjin Kim

On-going Projects
Delay-Tolerant Network (DTN) Technology for Wireless Cellular and Sensor Networks
Sponsor: Korea Communications Commission (방송통신위원회)
Period: 2011. 3 ~ 2014. 2.