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Exploiting Mobile Contact Patterns for Message Forwarding in Mobile Opportunistic Networks

机译：利用移动联系方式进行移动机会网络中的消息转发

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摘要

When sparse and challenged networks are characterized by small node population, non-randomized node distribution, and low node density, it is hard to maintain end-to-end connectivity among mobile nodes. The mobile opportunistic networking technology provides data dissemination services by means of transient inter-node communications during node movements in a network. Recent studies intend to exploit node mobility to store, carry and forward data upon opportunistic contacts among nodes. To address the uncertainty nature of future contacts, traditional ways replicate message copies to increase data delivery. However, most replication techniques forward message copies either in a greedy manner or select the next forwarding node by considering only contact history. In this paper, we exploit contact patterns among mobile nodes and propose a Regular and Sporadic Contact-Based Routing (RSCR) scheme where regular and sporadic contact patterns are defined to distinguish contacts of which either periodically or occasionally appear in a time scale, to enhance delivery rate in a cost-effective manner. We conduct synthetic simulation to examine the RSCR scheme under the SLAW and Infocom’05 mobility traces. Performance results show its efficiency on the successful delivery rate with lower message overhead as compared with the typical Epidemic and PRoPHETv2 schemes.
机译：当稀疏和挑战网络的特点是节点数量少，节点分布不随机且节点密度低时，很难在移动节点之间维持端到端的连接性。移动机会联网技术通过网络中节点移动期间的瞬时节点间通信来提供数据分发服务。最近的研究打算利用节点移动性来存储，携带和转发节点之间的机会性联系时的数据。为了解决未来联系的不确定性，传统方式复制消息副本以增加数据传递。但是，大多数复制技术都是以贪婪的方式转发消息副本，或者通过仅考虑联系历史来选择下一个转发节点。在本文中，我们利用移动节点之间的联系方式，提出了一种基于规则和零星的基于联系人的路由（RSCR）方案，其中定义了规则的和零星的联系方式，以区分在时间范围内定期出现或偶尔出现的联系，以增强以经济有效的方式提高投放速度。我们进行了综合仿真，以检查SLAW和Infocom’05移动轨迹下的RSCR方案。性能结果表明，与典型的Epidemic和PRoPHETv2方案相比，它以较低的消息开销实现了成功传递速率的效率。

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