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Routing, Anycast, and Multicast for Mesh and Sensor Networks

机译:用于网状和传感器网络的路由,yourcast和多播

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This paper studies routing schemes and their distributed construction in limited wireless networks, such as sensor or mesh networks. We argue that the connectivity of such networks is well captured by a constant doubling metric and present a constant stretch multicast algorithm through which any network node u can send messages to an arbitrary receiver set U. In other words, we describe a distributed approximation algorithm which is only a constant factor off the NP-hard Minimum Steiner Tree on u(union)U. As a building block for the multicasting, we construct a 1 + epsilon stretch labeled routing scheme with label size O(log THETA) and storage overhead O(1/epsilon)~(alpha) (log THETA)(O(alpha) +log(DELTA)), where THETA is the diameter of the network, DELTA the maximum degree of any network node, and alpha a constant representing the doubling dimension of the network. In addition to unicast and multicast, we present a constant approximation for anycasting on the basis of 6~(1/2)-approximate distance queries. We provide a distributed algorithm to construct the required labeling and routing tables.
机译:本文研究了路由方案及其在有限无线网络中的分布式结构,例如传感器或网状网络。我们认为这种网络的连接良好地通过恒定的加倍度量捕获,并且呈现了任何网络节点U可以向任意接收器集合U的网络节点发送消息的恒定拉伸组播算法。换句话说,我们描述了一种分布式近似算法在U(Union)U上的NP-Hard Minum Minute Steiner树是一个恒定的因素。作为多播的构建块,我们构建一个1 + epsilon拉伸标记的路由方案,标签尺寸O(日志θ)和存储开销o(1 / epsilon)〜(alpha)(log theta)(O(alpha)+ log (Delta)),其中Theta是网络的直径,Delta最大程度的任何网络节点,以及表示网络加倍维度的alpha常数。除了单播和多播之外,我们还在6〜(1/2)的距离查询的基础上呈现常量近似。我们提供了一种分布式算法来构造所需的标签和路由表。

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