Counter-Based Broadcast Scheme Considering Reachability, Network Density, and Energy Efficiency for Wireless Sensor Networks.
Counter-Based Broadcast Scheme Considering Reachability, Network Density, and Energy Efficiency for Wireless Sensor Networks.
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DOI：
10.3390/s18010120
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发表时间：
2018-01-04
期刊：
影响因子：
--
通讯作者：
Lee JR
中科院分区：
文献类型：
--
作者：
Jung JY;Seo DY;Lee JR
无线传感器网络（WSN）作为一种创新的信息收集方法正在兴起，它将显著提高基础设施系统的可靠性和效率。广播是无线传感器网络传播信息的常用方法。为了缓解广播风暴问题，已经提出了多种基于计数器的广播方案，使用计数阈值和随机访问延迟。然而，由于广播消息的传播有限，因此存在一种权衡，即广播消息的冗余重传变低，节点的能量效率提高，但可达性变低。因此，有必要研究一种有效的基于计数器的广播方案，该方案可以动态调整随机访问延迟和计数阈值，以保证广播消息的高可达性、低冗余性和节点的低能耗。因此，在本文中，我们首先测量从两个相邻节点接收相同广播消息的节点提供的额外覆盖，以实现广播消息的低冗余重传的高可达性。其次，我们提出了一种新的基于计数器的广播方案，考虑了额外覆盖区域的大小、节点与广播节点之间的距离、节点的剩余电池以及节点密度的变化。最后，我们将该方案与现有的基于计数器的广播方案进行了性能比较。仿真结果表明，该方案在减少重广播、可达性和总能耗等方面优于现有方案。
A wireless sensor network (WSN) is emerging as an innovative method for gathering information that will significantly improve the reliability and efficiency of infrastructure systems. Broadcast is a common method to disseminate information in WSNs. A variety of counter-based broadcast schemes have been proposed to mitigate the broadcast-storm problems, using the count threshold value and a random access delay. However, because of the limited propagation of the broadcast-message, there exists a trade-off in a sense that redundant retransmissions of the broadcast-message become low and energy efficiency of a node is enhanced, but reachability become low. Therefore, it is necessary to study an efficient counter-based broadcast scheme that can dynamically adjust the random access delay and count threshold value to ensure high reachability, low redundant of broadcast-messages, and low energy consumption of nodes. Thus, in this paper, we first measure the additional coverage provided by a node that receives the same broadcast-message from two neighbor nodes, in order to achieve high reachability with low redundant retransmissions of broadcast-messages. Second, we propose a new counter-based broadcast scheme considering the size of the additional coverage area, distance between the node and the broadcasting node, remaining battery of the node, and variations of the node density. Finally, we evaluate performance of the proposed scheme compared with the existing counter-based broadcast schemes. Simulation results show that the proposed scheme outperforms the existing schemes in terms of saved rebroadcasts, reachability, and total energy consumption.
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