一种异构移动DTN的地理多副本路由方案
A Geographic Multi-Copy Routing Scheme for DTNs With Heterogeneous Mobility
摘要：
以前的地理路由方案在延迟/中断容忍网络（DTNs）只考虑同质的情况下，节点的移动性是相同的。基于此，本文提出了一种基于DTN的异构地理路由方案。系统地，我们的目标是通过两个步骤来实现：1）我们首先提出了“最佳地理中继（TBGR）”路由方案，通过有限数量的副本，在同构的情况下，中继消息。我们进一步克服了局部最大值问题的TBGR给定稀疏的网络密度，不同于密集的网络，如集群无线传感器网络（WSNs）的努力。2)接下来，我们扩展TBGR异构的情况下，并提出了“最好的异质性地理中继（TBHGR）”的路由方案，考虑到个人节点的访问偏好（称为不相同的节点移动性）。一个现实的异构场景下的广泛的结果显示TBHGR的优点，在可靠的消息传递，而较低的路由开销的文献作品。
英文摘要：
Previous geographic routing schemes in Delay/Disruption Tolerant Networks (DTNs) only consider the homogeneous scenario where nodal mobility is identical. Motivated by this gap, we turn to design a DTN based geographic routing scheme in heterogeneous scenario. Systematically, our target is achieved via two steps: 1) We first propose "The-Best-Geographic-Relay (TBGR)" routing scheme to relay messages via a limited number of copies, under the homogeneous scenario. We further overcome the local maximum problem of TBGR given a sparse network density, different from those efforts in dense networks like clustered Wireless Sensor Networks (WSNs). 2) We next extend TBGR for heterogeneous scenario, and propose "The-Best-Heterogeneity-Geographic-Relay (TBHGR)" routing scheme considering individual nodal visiting preference (referred to non-identical nodal mobility). Extensive results under a realistic heterogeneous scenario show the advantage of TBHGR over literature works in terms of reliable message delivery, while with low routing overhead.
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