Martinet: A disciplinarian protocol for resource access in DTN

This paper analyses the congestion on a LEO satellite architecture with intermittent connectivity. The satellites are used to sense and gather data from ground terminals. The DTN (Delay Tolerant Networking) architecture allows the terminals to wait for the next contact when the satellite is not in the line of sight. The lack of connectivity of the network may create starvations for some stations. A model of the network is provided using Queueing Theory which allows to determine a probability of loss. This derivation proves that loss depends more on the number of terminals than on packet lifetime. The proposed scheduler and protocol allow to distribute traffic and loss fairly among stations. A testbed has been designed to validate the protocol.