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Delay Tolerant Networks (DTNs) are a class of networks that experience frequent and long-duration partitions due to sparse distribution of nodes. DTN multicasting is a desirable feature for applications where some form of group communication is needed. The topological impairments experienced within a DTN pose unique challenges for designing effective DTN multicasting protocols. In this paper, the authors examine multicasting in DTNs using controlled flooding schemes. Specifically, they analyze basic multicast routing schemes for fundamental performance metrics such as message delivery ratio, message delay, and buffer occupancy.
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