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Delay-tolerant networking (DTN) | ||||||||||||
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In a mobile ad hoc network (MANET, see Definition 1), nodes move around causing connections to form and break over time. Definition 1: Mobile ad hoc network [PBB+17]
A wireless network that allows easy connection establishment between mobile wireless client devices in the same physical area without the use of an infrastructure device, such as an access point or a base station. Due to mobility, a node can sometimes find itself devoid of network neighbours. In this case, the node 1️⃣ stores the messages en route to their destination (which is not the node itself), and 2️⃣ when it finds a route of the destination of the messages, forwards the messages to the next node on the route. This networking paradigm is called store-and-forward. A delay-tolerant networking (DTN) architecture [CBH+07] is a store-and-forward communications architecture in which source nodes send DTN bundles through a network to destination nodes. In a DTN architecture, nodes use the Bundle Protocol (BP) to deliver data across multiple links to the destination nodes. Watch short animation from NASA: Watch detailed lecture from NASA: References
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