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Technology
Type:
Research Proposal
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English (U.S.)
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Topic:

Towards a More Efficient and Reliable Transport in Delay Tolerant, Opportunistic Networks (Research Proposal Sample)

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The task involved coming up with improved opportunistic routing systems. This study sought to devise a novel and improved dtn routing network considering the impact of node energy so as to improve the defectiveness in the existing routing algorithms

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Content:

Towards a More Efficient and Reliable Transport in Delay Tolerant, Opportunistic Networks
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Background
The history of delay-tolerant networking dates back in early 70s [1]. Over the past few years, there has been an escalating demand for network due to the swift advancement in contemporary science and technology; the technology involved in network communication has persistently progressed and improved. Such networks include the DTNs (Delay Tolerant Networks), which have been argued to possess a low rate of transmission, a high latency, intermittent connections, fault tolerance, delay tolerance, nodes frequently move, limited storage as well as communication characteristics in harsh settings, which is not the case for IP Internet technology to-end / traditional TCP-based communications fail to facilitate excellent service. Protocols considered in routing are simply the approach of carrying out a message transmission from the source to destination. The existing routing protocols in opportunistic networks, both reactive protocols (like DSR, AODV) and pro-active or table-driven (such as link-state based routing practices like OLSR and OSPF) take the assumption of the provision of a complete end-to-end route, and seek to notice it prior sending any significant data. Nonetheless, the conventional protocols have been considered incompetent in exploiting the communication prospects offered by these opportunistic contacts. This has led the traditional routing protocols to have a significantly deteriorated performance since their connectivity becomes highly sporadic and short-lived. These traditional flooding routing methods face the shortcoming of consuming vast amounts of resources as a result of huge number of copies besides necessitating huge buffer space amount, energy and bandwidth. To have these problems prevailed over, the proposed study seeks to come up with improved opportunistic routing systems designed to (a) store and transport a message by a node for lengthy time durations up to where an opportunity to communicate arises (mobility-enhanced), (b) independently-made local forwarding options (opportunistic) as well as (c) propagating manifold copies of an identical message in parallel (replication) to improve the likelihood delivery of at least one.
Introduction
Both wireless and wired networks have facilitated the interconnection of an array of devices over infinite distances. For instance, the modern technology has facilitated the connection from a mobile phone to numerous powerful servers around the globe. Regardless of their success, these networks have been unable to reach all over, while the costs of some applications are prohibitive. DTNs are simply MANETs (Mobile Ad Hoc NETworks) whereby the quantity of mobile nodes in each unit area is considerably minimal thereby declaring the connectivity between these nodes intermittent [1]. Within a DTN setting, a source node depends on the other nodes’ mobility acting as relays, thereby optimizing on the transmission opportunities taking place upon the contact among the mobile relays. Therefore, the data transfer among DTNs highly relies on these nodes’ mobility as well as the packet replication strategy [2]. This forwarding approach is usually identified as ‘opportunistic routing’ [3].
The proposed study seeks to achieve a highly efficient and reliable transport in Delay Tolerant, opportunistic networks, by tackling the problem involved in reliable transport in DTNs (delay-tolerant mobile ad hoc networks) ran by a number of opportunistic routing algorithms. The study will seek to propose a reliable transport system that depends on ACKs (acknowledgements) and source coding. Based on the buffer management guidelines, the study will derive a fluid model for the reliable transport mechanism which enables the expression of both the energy intake and mean file completion time up to the delivery of final ACK source. The model’s precision will be evaluated via numerical simulations while engaging a comprehensive assessment of how the performance is affected by the system characteristics.
Aims and objectives
The proposed study seeks to design a more efficient and reliable transport in Delay Tolerant, opportunistic networks with the aim of minimizing the “round-trip file delay for a unicast session.” The assumptions to be considered include a harmonized mobility design, time-constrained epidemic networking, requiring the splitting of the file into numerous packets and a single packet being able to get exchanged during a contact, besides the absence of background traffic. The study will also seek to achieve the facilitation of any wireless communication without the presence of any infrastructure. For the purposes of exchanging packets, the proposed study anticipates the two mobile nodes to come within each other’s radio range. Due to the connectivity of the intermittent, these nodes are expected to depend on the Store-Carry-and-Forward model which intrinsically comprises of a communication delay. The study will also seek to facilitate definite networking services, regardless of the recurrent and enduring disconnections. Finally, the proposed study seeks to facilitate a ‘deterministic’ type of consistency, i.e., ensuring that RLCs (Random Linear Combinations) get to their destinations accordingly, besides ensuring that the ACKs and coding take on the network’s losses.
Research Methodology
For the purpose of coming up with improved opportunistic routing systems, the proposed study seeks to devise a novel and improved DTN routing network considering the impact of node energy so as to improve the defectiveness in the existing routing algorithms. By combining an opportunistic Routing based on Energy DTN with the energy factor of the node, then the proposed study seeks to come up with an EROD (Energy-aware Routing in Opportunistic DTNs). The EROD routing network is anticipated to improve on the rate of transmission, a high latency, intermittent connections, fault tolerance, delay tolerance, nodes frequently move, limited storage as well as communication characteristics in harsh settings, unlike the existing routing networks.
Timetable (3-4 years)
The anticipated study...
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