论文标题

混合通信网络中最短的路径路由

Near-Shortest Path Routing in Hybrid Communication Networks

论文作者

Coy, Sam, Czumaj, Artur, Feldmann, Michael, Hinnenthal, Kristian, Kuhn, Fabian, Scheideler, Christian, Schneider, Philipp, Struijs, Martijn

论文摘要

混合网络,即利用不同交流方式的网络变得更加普遍。为了允许对此类网络的理论研究,[Augustine等人,Soda'20]介绍了$ \ Mathsf {Hybrid} $模型,该模型基于同步信息传递的概念,并使用两个基本不同的通信原理:局部模式:一种允许每个节点在本地交流图中与每个邻居交换一个信息;以及任何一对节点都可以交换消息的全局模式,但是每回合只能进行此类交流。 $ \ mathsf {hybrid} $模型的先前研究的相当一部分围绕基本通信原始图和计算距离或网络中的最短路径。在本文中,我们将这项研究扩展到相关的基本问题,即计算本地通信图中近乎最短路路径的紧凑路由方案。我们证明,对于本地通信图是具有$ n $节点的单位盘图的情况,它在飞机上实现并且没有无线电孔,我们可以确定地计算出具有持续扩展的路由方案,该方案具有持续的拉伸,并且使用$ O(\ log n)$位的标签和本地路由表,仅在$ o(\ log n)中$ o(\ log n)$ rounds。

Hybrid networks, i.e., networks that leverage different means of communication, become ever more widespread. To allow theoretical study of such networks, [Augustine et al., SODA'20] introduced the $\mathsf{HYBRID}$ model, which is based on the concept of synchronous message passing and uses two fundamentally different principles of communication: a local mode, which allows every node to exchange one message per round with each neighbor in a local communication graph; and a global mode where any pair of nodes can exchange messages, but only few such exchanges can take place per round. A sizable portion of the previous research for the $\mathsf{HYBRID}$ model revolves around basic communication primitives and computing distances or shortest paths in networks. In this paper, we extend this study to a related fundamental problem of computing compact routing schemes for near-shortest paths in the local communication graph. We demonstrate that, for the case where the local communication graph is a unit-disc graph with $n$ nodes that is realized in the plane and has no radio holes, we can deterministically compute a routing scheme that has constant stretch and uses labels and local routing tables of size $O(\log n)$ bits in only $O(\log n)$ rounds.

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