A power controlled interference aware routing protocol for dense multi-hop wireless networks
A power controlled interference aware routing protocol for dense multi-hop wireless networks
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DOI：
10.1007/s11276-006-9233-z
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发表时间：
2008-03
影响因子：
3
通讯作者：
Liran Ma;Qian Zhang;Xiuzhen Cheng
中科院分区：
文献类型：
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作者：
Liran Ma;Qian Zhang;Xiuzhen Cheng
影响多跳无线网络性能的一个关键问题是相邻节点之间的干扰。在本文中，我们提出了一种新颖实用的干扰感知度量，称为网络分配向量计数（NAVC），以估计干扰对平均延迟和可用带宽的影响。该度量可以很容易地应用于为基于802.11多跳网络设计的路由协议，而无需修改当前的802.11协议。详细介绍了作为AODV[32]路由协议度量和发射功率控制度量的NAVC的设计。仿真结果表明，与基于跳数的协议相比，navc驱动的AODV可以大大提高其性能。对于密集部署节点的场景，吞吐量改进通常是接近2的因素，这表明随着网络变得更密集，NAVC更有用。此外，利用NAVC进行发射功率控制可显著延长网络寿命。我们的方法对于无线传感器网络等新兴应用至关重要，这些应用的干扰很大，能量受到严重限制。
A key issue impacting the performance of multi-hop wireless networks is the interference among neighboring nodes. In this paper, we propose a novel and practical interference aware metric, termed asNetwork Allocation Vector Count (NAVC), to estimate the effects of the interference on the average delay and the available bandwidth. This metric can be easily applied to routing protocols designed for 802.11 based multi-hop networks with no modification to the current 802.11 protocol. The design of NAVC as a metric for the AODV [32] routing protocol, as well as a metric for transmit power control, are described in detail. Our simulation results reveal that the NAVC-driven AODV can greatly improve its performance compared to those protocols based on hop-count. For scenarios of densely deployed nodes, the throughput improvement is often a factor near two, indicating that NAVC is more useful as networks grow denser. Moreover, the network lifetime can be notably prolonged when the NAVC is employed to conduct transmit power control. Our approach is essential for emerging applications such as wireless sensor networks where the interference is heavy and the energy is severely constrained.