A hybrid scheme for video transmission over wireless multimedia sensor networks
A hybrid scheme for video transmission over wireless multimedia sensor networks
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DOI：
10.1109/med.2009.5164670
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
Dionisis Kandris;M. Tsagkaropoulos;I. Politis;A. Tzes;S. Kotsopoulos
中科院分区：
文献类型：
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作者：
Dionisis Kandris;M. Tsagkaropoulos;I. Politis;A. Tzes;S. Kotsopoulos
具有多媒体能力的传感器的引入对传统的无线传感器网络提出了新的挑战，要求其提供功率和质量有效的路由。本文提出了一种创新的协议，在无线多媒体传感器网络的功率和感知QoS感知的多媒体内容路由。所提出的方案包括能源效率的分层路由和视频数据包根据数据包的重要性排序的优点。无线传感器网络中的分层路由算法通常用于提高网络带宽效率和功率控制。此外，分组调度作为一种有效的速率自适应技术在无线多媒体通信中被广泛采用。这两种技术相结合的建议方案，首先，利用节点的最高剩余能量和低功耗的路径，以执行路由，其次，预测视频数据包的失真，并选择要么丢弃它们或根据当前的信道带宽限制发送它们。仿真结果证明了所提出的组合方案在功耗和接收视频失真（PSNR）方面的效率。
The introduction of multimedia capable sensors has posed new challeges for classic Wireless Sensor Networks that are henceforth required to provide both power and quality efficent routing. This paper proposes an innovative protocol for power and perceived QoS aware routing of multimedia content over Wireless Multimedia Sensor Networks. The proposed scheme comprises the advantages of both energy efficient hierarchical routing and video packet schedulling according to the packet's importance. The hierarchical routing algorithms are often utilized for bandwidth efficiency and power control over Wireless Sensor Networks. In addition, packet scheduling is widely adopted as an effective rate adaptation technique in wireless multimedia communications. Both these techniques are combined in a proposed scheme which firstly, utilizes nodes with the highest residual energy and low power-cost paths, in order to perform the routing and secondly, predicts the distortion of video packets and selects to either drop them or transmit them according to the current channel bandwidth limitations. The simulation results prove the efficiency of the proposed combined scheme in terms of power consumption and received video distortion (PSNR).