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	Transport Control Based on Spectrum Switching Detection in Cognitive Radio Ad Hoc Networks
	Ren Han; Xiaoxia Huang; Pan Li
	2010
会议名称	7th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2010, and Dedicated Short Range CommunicationsWorkshop, DSRC 2010
英文摘要	Cognitive Radio is an intelligent wireless communication technology which can improve the radio spectrum utilization through opportunistically accessing the vacant portions of the spectrum. Due to the time-varying spectrum availability, a cognitive node has to perform spectrum switching frequently, which causes severe delay and high packet loss. Therefore, network protocol design for cognitive radio ad hoc networks (CRAHNs) should address this issue to ensure reliable end-to-end packet delivery. In this paper, we first propose a novel spectrum switching detection scheme for CRAHNs in which intermediate nodes monitor the variation of the Round-Trip Time (RTT) and the arrival interval time of packets to detect the spectrum switching over succeeding links. Based on the scheme, a new transport control mechanism is then designed to deal with spectrum switching in CRAHNs. We implement the proposed mechanisms on a USRP2-based testbed. The experiment results demonstrate that the mechanisms can detect the spectrum switching and improve end-to-end throughput by up to 45%
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/172644/3108]
专题	深圳先进技术研究院_数字所
作者单位	2010
推荐引用方式 GB/T 7714	Ren Han,Xiaoxia Huang,Pan Li. Transport Control Based on Spectrum Switching Detection in Cognitive Radio Ad Hoc Networks[C]. 见:7th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2010, and Dedicated Short Range CommunicationsWorkshop, DSRC 2010.

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