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An Optimized Hidden Node Detection Paradigm for Improving the Coverage and Network Efficiency in Wireless Multimedia Sensor Networks

机译：优化的隐藏节点检测范例可提高无线多媒体传感器网络的覆盖范围和网络效率

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Successful transmission of online multimedia streams in wireless multimedia sensor networks (WMSNs) is a big challenge due to their limited bandwidth and power resources. The existing WSN protocols are not completely appropriate for multimedia communication. The effectiveness of WMSNs varies, and it depends on the correct location of its sensor nodes in the field. Thus, maximizing the multimedia coverage is the most important issue in the delivery of multimedia contents. The nodes in WMSNs are either static or mobile. Thus, the node connections change continuously due to the mobility in wireless multimedia communication that causes an additional energy consumption, and synchronization loss between neighboring nodes. In this paper, we introduce an Optimized Hidden Node Detection (OHND) paradigm. The OHND consists of three phases: hidden node detection, message exchange, and location detection. These three phases aim to maximize the multimedia node coverage, and improve energy efficiency, hidden node detection capacity, and packet delivery ratio. OHND helps multimedia sensor nodes to compute the directional coverage. Furthermore, an OHND is used to maintain a continuous node– continuous neighbor discovery process in order to handle the mobility of the nodes. We implement our proposed algorithms by using a network simulator (NS2). The simulation results demonstrate that nodes are capable of maintaining direct coverage and detecting hidden nodes in order to maximize coverage and multimedia node mobility. To evaluate the performance of our proposed algorithms, we compared our results with other known approaches.
机译：无线多媒体传感器网络（WMSN）中在线多媒体流的成功传输是一个巨大的挑战，因为它们的带宽和功率资源有限。现有的WSN协议并不完全适用于多媒体通信。 WMSN的有效性各不相同，这取决于其传感器节点在现场的正确位置。因此，最大化多媒体覆盖范围是多媒体内容传递中最重要的问题。 WMSN中的节点可以是静态的也可以是移动的。因此，由于无线多媒体通信中的移动性导致额外的能量消耗以及相邻节点之间的同步丢失，节点连接不断变化。在本文中，我们介绍了一种优化的隐藏节点检测（OHND）范例。 OHND包括三个阶段：隐藏节点检测，消息交换和位置检测。这三个阶段旨在最大程度地提高多媒体节点的覆盖范围，并提高能效，隐藏节点检测能力和分组传输率。 OHND帮助多媒体传感器节点计算方向性覆盖范围。此外，OHND用于维护连续的节点–连续的邻居发现过程，以便处理节点的移动性。我们通过使用网络模拟器（NS2）来实现我们提出的算法。仿真结果表明，节点能够保持直接覆盖并检测隐藏的节点，从而最大程度地提高覆盖范围和多媒体节点的移动性。为了评估我们提出的算法的性能，我们将我们的结果与其他已知方法进行了比较。

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