首页> 外文会议>Distributed Computing Systems, 2009. ICDCS '09 >MOPS: Providing Content-Based Service in Disruption-Tolerant Networks
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MOPS: Providing Content-Based Service in Disruption-Tolerant Networks

机译:MOPS:在容错网络中提供基于内容的服务

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Content-based service, which dynamically routes and delivers events from sources to interested users, is extremely important to network services. However, existing content-based protocols for static networks will incur unaffordable maintenance costs if they are applied directly to the highly mobile environment that is featured in disruption-tolerant networks (DTNs). In this paper, we propose a unique publish/subscribe scheme that utilizes the long-term social network properties, which are observed in many DTNs, to facilitate content-based services in DTNs. We distributively construct communities based on the neighboring relationships from nodes' encounter histories. Brokers are deployed to bridge the communities, and they adopt a locally prioritized pub/sub scheme which combines the structural importance with subscription interests, to decide what events they should collect, store, and propagate. Different trade-offs for content-based service can be achieved by tuning the closeness threshold in community formation or by adjusting the broker-to-broker communication scheme. Extensive real-trace and synthetic-trace driven simulation results are presented to support the effectiveness of our scheme.
机译:基于内容的服务可以动态地将事件从源路由并传递到感兴趣的用户,这对于网络服务至关重要。但是,如果将现有的基于内容的静态网络协议直接应用到容忍中断网络(DTN)所具有的高度移动性环境中,则会产生难以承受的维护成本。在本文中,我们提出了一种独特的发布/订阅方案,该方案利用了许多DTN中观察到的长期社交网络属性,以促进DTN中基于内容的服务。我们基于节点的遭遇历史中的邻近关系来分布式构建社区。部署经纪人来桥接社区,他们采用本地优先的发布/订阅方案,该方案将结构重要性与订阅兴趣相结合,以决定应收集,存储和传播哪些事件。通过调整社区形成中的紧密度阈值或通过调整经纪人到经纪人的通信方案,可以实现基于内容的服务的不同权衡。提出了广泛的实迹线和合成迹线驱动的仿真结果,以支持我们方案的有效性。

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