Comparison of routing metrics in 802.11n wireless mesh networks
Comparison of routing metrics in 802.11n wireless mesh networks
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802.11n 无线网状网络中的路由指标比较
DOI：
10.1109/infcom.2013.6566986
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Dimitrios Koutsonikolas
中科院分区：
文献类型：
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作者：
R. Sheshadri;Dimitrios Koutsonikolas
我们进行的第一个实验研究的性能的链路质量为基础的路由度量在802.11n无线网状网络（WMN）。基于链路质量的度量已被证明显著优于传统跳数度量，但它们仅在传统802.11 a/B/g无线电上被评估。新的802.11n标准在MAC和PHY层引入了许多增强功能（MIMO技术、信道绑定、帧聚合、短保护间隔以及更积极的调制和编码方案），标志着新一代802.11无线电的开始。我们在21个节点的室内802.11n WMN测试床的研究表明，在传统的802.11 WMN的跳数度量的基于链路质量的指标的增益不结转在802.11n MIMO WMN。我们分析了这种行为的原因，并提出建议，在802.11n无线网状网的新的路由度量的设计。
We conduct the first experimental study of the performance of link quality-based routing metrics in an 802.11n wireless mesh network (WMN). Link quality-based metrics have been shown to significantly outperform the traditional hopcount metric but they have only been evaluated over legacy 802.11a/b/g radios. The new 802.11n standard introduces a number of enhancements at the MAC and PHY layers (MIMO technology, channel bonding, frame aggregation, short guard interval, and more aggressive modulation and coding schemes) marking the beginning of a new generation of 802.11 radios. Our study in a 21-node indoor 802.11n WMN testbed reveals that the gains of link quality-based metrics over the hopcount metric in legacy 802.11 WMNs do not carry over in 802.11n MIMO WMNs. We analyze the causes of this behavior and make recommendations for the design of new routing metrics in 802.11n WMNs.