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Exploring an energy-efficient DTN framework supporting disaster management services in post disaster relief operation

机译：探索在灾后救援中支持灾害管理服务的高能效DTN框架

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In recent years, several investigations have been made on "challenged network" [also known as, delay tolerant network (DTN)] architectures highlighting their advantages and disadvantages. In spite of its inherent shortcomings of unreliability and delay, smart-phone based opportunistic network is gaining immense popularity in the research community due to its applicability in different adverse and extreme communication scenarios where traditional communication infrastructure is either unavailable or incapacitated for a long time. Considerable research has been conducted till date to design efficient network architecture for emergency data dissemination in intermittently connected/challenged networks. Different architectures (ranging from flat to multi-tier) are proposed for implementing opportunistic DTN keeping in view of specific application requirements. However, very few of these proposed architectures have been examined from the perspective of a post disaster communication. Moreover, most DTN architectures are designed by aiming towards increasing delivery probability and reducing latency and as a whole, maximizing network throughput; with very little emphasis on its energy efficiency. The impact of different mobility patterns on existing DTN routing algorithms with respect to data dissemination and energy consumption has also not been studied so far. Our objective, in this paper, is to investigate the impact of different mobility patterns on existing DTN routing protocols and existing DTN architectures and subsequently, come up with a suitable energy efficient DTN framework combining suitable architecture and routing protocol that may be used to offer different disaster management services during post-disaster relief operation. We have done an extensive simulation on ONE simulator with different categories of well-known existing DTN architectures, mobility models, DTN routing protocols to study the network performance in terms of delivery probability, energy efficiency and overhead ratio. Based on the simulation results, we have tried to figure out a suitable combination of energy efficient architecture, mobility model and routing protocol that fits well in the post disaster communication scenario.
机译：近年来，对“挑战网络” [也称为延迟容忍网络（DTN）]体系结构进行了一些研究，突出了它们的优缺点。尽管基于智能电话的机会网络存在固有的缺点，但由于其适用于传统的通信基础设施不可用或长时间无法使用的各种不利和极端的通信情况，因此在研究领域中正变得越来越受欢迎。迄今为止，已经进行了大量研究来设计有效的网络体系结构，以在间歇连接/受挑战的网络中分发紧急数据。针对特定的应用需求，提出了用于实现机会性DTN的不同体系结构（从平面到多层）。但是，从灾难后通信的角度来研究这些提议的体系结构的很少。而且，大多数DTN架构的设计目标都是提高交付概率和减少延迟，并总体上最大化网络吞吐量。很少强调其能源效率。到目前为止，还没有研究过不同的移动性模式对现有DTN路由算法在数据分发和能耗方面的影响。本文的目的是研究不同的移动性模式对现有DTN路由协议和现有DTN架构的影响，随后提出一种合适的高能效DTN框架，该框架结合了合适的架构和路由协议，可用于提供不同的灾后救援行动中的灾害管理服务。我们已经在ONE模拟器上进行了广泛的模拟，使用了不同种类的已知现有DTN体系结构，移动性模型，DTN路由协议，以研究网络性能的交付概率，能效和开销比率。根据仿真结果，我们试图找出高能效架构，移动性模型和路由协议的合适组合，这些组合非常适合灾后通信场景。

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