Abstract
This paper addresses the problem of routing in delay tolerant networks (DTNs). Delay tolerant networks are wireless networks where disconnections occur frequently due to mobility of nodes, failures of energy, the low density of nodes, or when the network extends over long distances. In these cases, traditional routing protocols that have been developed for mobile ad hoc networks prove to be ineffective to the extent of transmitting messages between nodes. To resolve this problem and improve the performance of routing in delay tolerant networks we propose a new routing protocol called Spray and Dynamic; this approach represents an improvement of the spray and wait protocol by combining it with the two protocols: MaxProp and the model of “transfer by delegation” (Custody Transfer). To implement our approach Spray and Dynamic, we have developed a DTN simulator according to DTN network architecture.
Highlights
The domain of delays-tolerant networks (DTN) has really emerged in recent years to provide mechanisms to resolve communication problems and the problems of routing in delays-tolerant networks and necessary in an environment, there where it is almost impossible to find a connection from end to end communication path.To resolve this problem researchers have proposed the use of routing protocols based on the mechanism StoreCarry-and-Forward [1]
Delay tolerant networks are wireless networks where disconnections occur frequently due to mobility of nodes, failures of energy, the low density of nodes, or when the network extends over long distances
To resolve this problem and improve the performance of routing in delay tolerant networks we propose a new routing protocol called Spray and Dynamic; this approach represents an improvement of the spray and wait protocol by combining it with the two protocols: MaxProp and the model of “transfer by delegation” (Custody Transfer)
Summary
The domain of delays-tolerant networks (DTN) has really emerged in recent years to provide mechanisms to resolve communication problems and the problems of routing in delays-tolerant networks and necessary in an environment, there where it is almost impossible to find a connection from end to end communication path To resolve this problem researchers have proposed the use of routing protocols based on the mechanism StoreCarry-and-Forward [1]. The right choice comes down to the relay which has the highest probability of encountering the destination of the message To find such a relay, a DTN node needs information about the state of the various possible relays. With the aim of improving the performance of DTN routing in networks we propose a new routing approach called Spray and Dynamic, this approach is to improve the routing protocol spray and wait by combining it with the two routing protocols MaxProp and the model of “transfer by delegation” (custody transfer)
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