Two Energy-Saving Schemes for Cooperative Transmission with Opportunistic Large Arrays

L. Thanayankizil, A. Kailas, M. A. Ingram
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引用次数: 14

Abstract

An opportunistic large array (OLA) is a form of cooperative diversity in which a large group of simple, inexpensive relays or forwarding nodes operate without any mutual coordination, but naturally fire together in response to energy received from a single source or another OLA When used for broadcast, OLAs form concentric rings around the source, and have been shown to use less energy than conventional multi- hop protocols. This paper proposes two schemes, one for general OLA transmission and one specifically for upstream routing in the topology of wireless sensor networks, that each save over 50% of the energy of flooding. The OLA-T scheme uses a transmission threshold to suppress nodes that would make weak contributions. The OLA Concentric Routing Algorithm (OLACRA) takes advantage of the concentric ring structure of broadcast OLAs to limit flooding on the upstream connection. Combination of these two schemes and variations of OLACRA are evaluated in terms of energy savings and probability of successful upstream routing.
机会大阵列协同传输的两种节能方案
机会大阵列(OLA)是一种合作分集的形式,其中一大组简单、廉价的中继或转发节点在没有任何相互协调的情况下运行,但自然地一起发射以响应从单个源或另一个OLA接收的能量。用于广播时,OLA在源周围形成同心环,并且已被证明比传统的多跳协议使用更少的能量。本文提出了两种方案,一种用于一般OLA传输,一种用于无线传感器网络拓扑中的上游路由,每种方案都节省了50%以上的泛洪能量。OLA-T方案使用传输阈值来抑制贡献较弱的节点。OLA同心圆路由算法(OLACRA)利用广播式OLA的同心圆结构来限制上游连接上的泛洪。从节能和上游路由成功概率两方面对这两种方案的组合和OLACRA的变化进行了评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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