CSMA/CQ: A Novel SDN-Based Design to Enable Concurrent Execution of Channel Contention and Data Transmission in IEEE 802.11 Networks

doi:10.1109/ACCESS.2017.2665554

	CSMA/CQ: A Novel SDN-Based Design to Enable Concurrent Execution of Channel Contention and Data Transmission in IEEE 802.11 Networks
	Zhao, Qinglin 1; Xu, Fangxin 1; Yang, Jie 1; Zhang, Yujun 2
	2017
发表期刊	IEEE ACCESS
ISSN	2169-3536
卷号	5 页码:2534-2549
摘要	Conventional 802.11 carrier sense multiple access/collision avoidance (CSMA/CA) networks perform channel contention and data transmission serially over a whole channel. This leads to low throughput efficiency. In this paper, we propose a novel design called CSMA/CQ (contention queuing) to address this problem. This design is developed from the decoupling idea of SDN (Software-defined networking). In CSMA/CQ, each node concurrently executes channel contention and data transmission over two separate subchannels, where a CQ is introduced to coordinate the concurrency. This design enables CSMA/CQ to inherit the merit of the conventional distributed random channel access and carry out a centralized control on data transmission, while achieving far higher throughput than conventional 802.11 networks. We then develop a theoretical model to optimize bandwidth allocation for the channel contention and the data transmission, and prove the existence and uniqueness of the optimal solution. Extensive simulations verify the efficiency of CSMA/CQ and the accuracy of our theoretical model. To the best of our knowledge, CSMA/CQ is the first protocol to make channel contention and data transmission be executed independently and concurrently for wireless LANs (WLANs). This paper provides novel ideas in designing software-defined wireless networks.
关键词	OFDM software-defined wireless networks function separation 802.11
DOI	10.1109/ACCESS.2017.2665554
收录类别	SCI
语种	英语
资助项目	Macao FDCT-MOST[001/2015/AMJ] ; Macao FDCT[104/2014/A3] ; Macao FDCT[005/2016/A1] ; China MOST-FDCT[2016YFE0121500] ; National Natural Science Foundation of China[61672500] ; Instrument Development Project of CAS in China[YZ201426]
WOS研究方向	Computer Science ; Engineering ; Telecommunications
WOS类目	Computer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000397136900157
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/7455
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zhao, Qinglin
作者单位	1.Macau Univ Sci & Technol, Fac Informat Technol, Macau 853, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Qinglin,Xu, Fangxin,Yang, Jie,et al. CSMA/CQ: A Novel SDN-Based Design to Enable Concurrent Execution of Channel Contention and Data Transmission in IEEE 802.11 Networks[J]. IEEE ACCESS,2017,5:2534-2549.
APA	Zhao, Qinglin,Xu, Fangxin,Yang, Jie,&Zhang, Yujun.(2017).CSMA/CQ: A Novel SDN-Based Design to Enable Concurrent Execution of Channel Contention and Data Transmission in IEEE 802.11 Networks.IEEE ACCESS,5,2534-2549.
MLA	Zhao, Qinglin,et al."CSMA/CQ: A Novel SDN-Based Design to Enable Concurrent Execution of Channel Contention and Data Transmission in IEEE 802.11 Networks".IEEE ACCESS 5(2017):2534-2549.