摘要
In Delay Tolerant Networks (DTNs), establishing routing path from a source node to a destination node may not be possible, so the opportunistic routings are widely used. The energy and buffer constraints are general in DTNs composed of the mobile phones or Pads. This paper proposes a novel opportunistic routing protocol, denoted by Large Opporturioty (LAOP), for the energy and buffer constrained DTNs. The objective of LAOP is to reach many receivers of a message with a small number of transmissions. By LAOP, the sender floods a message when the number of its neighbors is not less than a threshold. We compare the delivery performance of LAOP with other four widely used Delay or Disruption Tolerant Network (DTN) routing protocols, Direct Delivery, Epidemic routing, SprayAndWait and PRoPHET and demonstrate that LAOP can improve the delivery performance and decrease the delivery latency simultaneously.
In Delay Tolerant Networks （DTNs）, establishing routing path from a source node to a destination node may not be possible, so the op- portunistic routings are widely used. The energy and buffer constraints are general in DTNs com- posed of the mobile phones or Pads. This paper proposes a novel opportunistic routing protocol, denoted by Large Opporturioty （LAOP）, for the energy and buffer constrained DTNs. The objec- tive of LAOP is to reach many receivers of a mes- sage with a small number of transmissions. By LAOP, the sender floods a message when the number of its neighbors is not less than a thresh- old. We compare the delivery performance of LAOP with other four widely used Delay or Dis- ruption Tolerant Network （DTN） routing proto- cols, Direct Delivery, Epidemic routing, SprayAndWait and PROPHET and demonstrate that LAOP can improve the delivery performance and decrease the delivery latency simultaneously.
基金
This work was supported by the National Natural Science Foundation of China under Grants No. 61100208, No. 61100205
the Natural Science Foundation of Jiangsu under Grant No. BK2011169. Pietro lio was supported by the EU FP7 project RECOGNITION： Relevance and Cognition for Self-Awareness in a Content-Centric Intemet.
