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An optimized content delivery approach based on demand–supply theory in disruption-tolerant networks
Telecommunication Systems ( IF 1.7 ) Pub Date : 2020-08-26 , DOI: 10.1007/s11235-020-00711-8
Samira Esfandiari , Mohammad Hossein Rezvani

Disruption-tolerance networks (DTNs) are suitable for applications that may lack continuous network connectivity. Examples of such applications include coupon distribution, crisis relief, traffic notification, and broadcasting news from a website. Generally, these contents have a temporal constraint, so that their value will be decreased over time. DTNs have to utilize mobile relay nodes to transmit messages from the sender to the destination. These relay nodes often have selfish behavior, leading to a lack of cooperation. To improve the overall routing functionality, one must motivate relay nodes to share their resources. Thus, different incentives and rewarding mechanisms must be devised to encourage cooperation. We believe that microeconomics theories are appropriate mathematical tools to model the interactions between the DTN nodes. In microeconomics, buyers aim at maximizing their utility concerning their budget constraints. In this paper, the demand–supply theory is deployed to mitigate nodes’ selfishness and to create incentives among them. Each user can receive multiple sub-messages each of which containing special benefits for his/her. In this way, nodes are motivated to forward messages, which in turn leads to greater profitability for them and maximizing the social welfare of the society. The simulation of the proposed algorithm illustrates its superiority in terms of significant criteria such as delivery ratio, end-to-end delay, number of dropped messages, buffering time, number of hops, overhead ratio, etc.



中文翻译:

一种基于需求-供应理论的容错网络中的优化内容交付方法

容错网络(DTN)适用于可能缺乏连续网络连接的应用程序。此类应用程序的示例包括息票分发,危机缓解,交通通知和来自网站的广播新闻。通常,这些内容具有时间限制,因此它们的值将随着时间减小。DTN必须利用移动中继节点将消息从发送方传输到目的地。这些中继节点通常具有自私的行为,导致缺乏合作。为了改善整体路由功能,必须激励中继节点共享其资源。因此,必须设计不同的激励和奖励机制来鼓励合作。我们认为微观经济学理论是对DTN节点之间的相互作用进行建模的合适数学工具。在微观经济学中,购买者旨在最大程度地发挥其预算约束方面的效用。在本文中,使用了需求-供应理论来减轻节点的自私性并在其中产生激励。每个用户可以接收多个子消息,每个子消息都包含对他/她的特殊好处。以这种方式,节点被激励转发消息,这反过来又为它们带来了更大的利润,并最大化了社会的社会福利。所提出算法的仿真表明了其在重要标准方面的优越性,例如传送率,端到端延迟,丢失的消息数,缓冲时间,跳数,开销率等。运用了需求-供应理论来减轻节点的自私并在节点之间建立激励机制。每个用户可以接收多个子消息,每个子消息都包含对他/她的特殊好处。以这种方式,节点被激励转发消息,这反过来又为它们带来了更大的利润,并最大化了社会的社会福利。所提出算法的仿真表明了其在重要标准方面的优越性,例如传送率,端到端延迟,丢失的消息数,缓冲时间,跳数,开销率等。运用了需求-供应理论来减轻节点的自私并在节点之间建立激励机制。每个用户可以接收多个子消息,每个子消息都包含对他/她的特殊好处。以这种方式,节点被激励转发消息,这反过来又为它们带来了更大的利润,并最大化了社会的社会福利。所提出算法的仿真表明了其在重要标准方面的优越性,例如传送率,端到端延迟,丢失的消息数,缓冲时间,跳数,开销率等。反过来又为他们带来了更大的利润,并使社会的社会福利最大化。所提出算法的仿真表明了其在重要标准方面的优越性,例如传送率,端到端延迟,丢失的消息数,缓冲时间,跳数,开销率等。反过来又为他们带来了更大的利润,并使社会的社会福利最大化。所提出算法的仿真表明了其在重要标准方面的优越性,例如传送率,端到端延迟,丢失的消息数,缓冲时间,跳数,开销率等。

更新日期:2020-08-27
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