Beyond Traditional DTN Routing: Social Networks for Opportunistic   Communication
  This article examines the evolution of routing protocols for intermittently connected ad hoc networks and discusses the trend toward social-based routing protocols. A survey of current routing solutions is presented, where routing protocols for opportunistic networks are classified based on the network graph employed. The need to capture performance tradeoffs from a multi-objective perspective is highlighted. 
Mary R. Schurgot, Cristina Comaniciu, Katia Jaffr\`es-Runser
cs.NI cs.SI