On the cross-layer interactions between congestion and contention in wireless sensor and actor networks
On the cross-layer interactions between congestion and contention in wireless sensor and actor networks
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DOI：
10.1016/j.adhoc.2007.02.007
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发表时间：
2007-08-01
期刊：
影响因子：
4.8
通讯作者：
Akan, O. B.
中科院分区：
文献类型：
--
作者：
Gungor, V. C.;Vuran, M. C.;Akan, O. B.
无线传感器与执行者网络（WSAN）由大量的传感器节点和相对较少的执行者节点组成，传感器节点协同观测物理现象，执行者节点则根据感知到的物理现象采取行动。由于共享无线介质的有限容量和传感器节点的存储器限制，在网络的操作期间可以经历信道竞争和网络拥塞。事实上，WSAN的多跳特性使本地争用的程度和经历的网络拥塞纠缠在一起。因此，WSAN的独特性要求对各种网络条件下的网络拥塞和竞争进行全面的分析。在本文中，我们全面研究竞争解决和拥塞控制机制之间的相互作用，以及在WSAN的物理层的影响。为了量化几个网络参数对整体网络性能的影响，进行了一组广泛的模拟。我们的分析结果表明，网络参数之间的相互依赖性要求自适应的跨层机制，在WSAN的有效数据传输。(c)2007 Elsevier B.V.保留所有权利。
Wireless Sensor and Actor Networks (WSAN) are composed of large number of sensor nodes collaboratively observing a physical phenomenon and relatively smaller number of actor nodes, which act upon the sensed phenomenon. Due to the limited capacity of shared wireless medium and memory restrictions of the sensor nodes, channel contention and network congestion can be experienced during the operation of the network. In fact, the multi-hop nature of WSAN entangles the level of local contention and the experienced network congestion. Therefore, the unique characteristics of WSAN necessitate a comprehensive analysis of the network congestion and contention under various network conditions. In this paper, we comprehensively investigate the interactions between contention resolution and congestion control mechanisms as well as the physical layer effects in WSAN. An extensive set of simulations are performed in order to quantify the impacts of several network parameters on the overall network performance. The results of our analysis reveal that the interdependency between network parameters call for adaptive cross-layer mechanisms for efficient data delivery in WSAN. (c) 2007 Elsevier B.V. All rights reserved.