Enhanced Buffer Management for Data Delivery to Multiple Destinations in DTNs

Yu Feng Hsu, Chih Lin Hu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Delay-tolerant networks often adopt the message replication methodology to increase the opportunity that destinations can receive messages from a source node in a network. Repeatedly replicating messages, however, consumes significant resources such as local buffer space on nodes and internode communication bandwidth. Previous buffer management and scheduling policies mainly contributed to a simple scenario of message unicasting from a source to a singular destination in a network. When message multicasting toward multiple destinations is considered, previous solutions perform inefficiently. This paper proposes a new buffer management and scheduling policy for message multicasting in delay-tolerant networks. The proposed policy is an optimal-based design with a new utility function, which can prioritize messages in a buffer for maximizing the successful delivery rate in a network. Simulation results manifest the efficacy of the proposed scheme under different mobility benchmarks in delay-tolerant networks.

Original languageEnglish
Pages (from-to)8735-8739
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Issue number10
StatePublished - Oct 2016


  • Buffer management
  • delay/disruption-tolerant networks (DTNs)
  • multicasting
  • routing protocols


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