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	Coolest path: spectrum mobility aware routing metrics in cognitive ad hoc networks
	Huang, Xiaoxia; Lu, Dianjie; Li, Pan; Fang, Yuguang
	2011
会议名称	31st International Conference on Distributed Computing Systems (ICDCS)
会议地点	Minneapolis, MN
英文摘要	Cognitive Radio (CR) emerges as a promising solution to current unbalanced spectrum utilization. The cognitive ad hoc network can take advantage of dynamicspectrum access and spectrum diversity over wide spectrum. It could achieve higher network capacity compared to traditional ad hoc networks, thus supporting bandwidth-demanding applications. A cognitive radio operates over wide spectrum with unpredictable channel availability. Moreover, the transmission opportunity of a cognitive node is not guaranteed due to the presence of primary users (PUs). These two unique features define new routingproblems in cognitive ad hoc networks. To better characterize the unique features of cognitive radio networks, we propose new routing metrics, including accumulated spectrum temperature, highest spectrum temperature, and mixed spectrum temperature to account for the time-varying spectrum availability. The proposed metrics favor the "coolest" path, or the path with the most balanced and/or the lowest spectrum utilization by the primary users. We also study the computational complexity of the routing algorithm in cognitive ad hoc networks. Experiment results on our USRP2 testbed show that the proposed metrics are capable of capturing the fluctuation of spectrum availability and suitable for cognitive ad hoc networks.
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/3615]
专题	深圳先进技术研究院_数字所
作者单位	2011
推荐引用方式 GB/T 7714	Huang, Xiaoxia,Lu, Dianjie,Li, Pan,et al. Coolest path: spectrum mobility aware routing metrics in cognitive ad hoc networks[C]. 见:31st International Conference on Distributed Computing Systems (ICDCS).  Minneapolis, MN.

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