In space as well as terrestrial MANET networks the cost of additional capacity is high. In order to support increasing demand for network resources it becomes necessary to intelligently reallocate resources among applications. It is envisioned that future space applications will involve a dynamic mixture of real-time and delay tolerant applications such as two-way voice, streaming video, telemetry, command, and delay tolerant file transfers with some deadline constraint. It is also envisioned that the future network in space will be DTN-capable, allowing for store-and-forward operation in a frequently disconnected environment. In this paper we present a Quality-of-Service framework for future space applications and a test implementation of that framework over DTN.
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