Modeling and Performance Analysis of Channel Assembling Based on Ps-rc Strategy with Priority Queues in CRNs

doi:10.1155/2022/6384261

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	Modeling and Performance Analysis of Channel Assembling Based on Ps-rc Strategy with Priority Queues in CRNs
	Li, Suoping 2,3; Xu, Qianyu 2,3; Gaber, Jaafar 1; Yang, Nana 2
刊名	Wireless Communications and Mobile Computing
	2022
卷号	2022
关键词	Blocking probability Continuous time systems Markov processes Quality of service Queueing theory Scheduling Assembling technology Cognitive radio network Continous time Markov chain Low priorities Modelling and performance analysis Priority queues Priority service Reserved channels Scheduling strategies Secondary user
ISSN号	1530-8669
DOI	10.1155/2022/6384261
英文摘要	Based on two types of priority queues, this paper proposes a polling scheduling strategy with reserved channel (Ps-rc strategy) for predefined priority services in cognitive radio networks (CRNs). Channel assembling (CA) technology and spectrum adaptation (SA) technology are adopted to dynamically adjust the assembled channels of secondary users (SUs) to improve the performance of the secondary network. Specifically, the SUs in CRNs are divided into two queues with different priorities; based on polling scheduling, a part of the idle channel is reserved for high-priority queue during the polling stage of the low-priority queue. The purpose is to increase the service quality (QoS) of high priority on the basis of providing fair scheduling. Furthermore, the CA-based channel access process of the proposed strategy is presented and modeled by continuous time Markov chain (CTMC). Then, the process of resource flow between users is mapped on CTMC, and the transition conditions and parameter sets of channel assembling covering all user activities of the system are derived. Finally, the system performance of the proposed CA-based Ps-rc scheduling strategy is simulated and evaluated, including network capacity, spectrum utilization, blocking probability, and forced termination probability. Numerical results show that the proposed strategy can improve the QoS of the predefined high-priority service without causing excessive starvation problem of low-priority service. © 2022 Suoping Li et al.
语种	英语
出版者	Hindawi Limited
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157980]
专题	理学院
作者单位	1.Department of Computer Science and Computer Engineering, Universite de Technologie Belfort-Montbeliard, Belfort; 90010, France 2.School of Science, Lanzhou University of Technology, Lanzhou; 730000, China; 3.School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou; 730000, China;
推荐引用方式 GB/T 7714	Li, Suoping,Xu, Qianyu,Gaber, Jaafar,et al. Modeling and Performance Analysis of Channel Assembling Based on Ps-rc Strategy with Priority Queues in CRNs[J]. Wireless Communications and Mobile Computing,2022,2022.
APA	Li, Suoping,Xu, Qianyu,Gaber, Jaafar,&Yang, Nana.(2022).Modeling and Performance Analysis of Channel Assembling Based on Ps-rc Strategy with Priority Queues in CRNs.Wireless Communications and Mobile Computing,2022.
MLA	Li, Suoping,et al."Modeling and Performance Analysis of Channel Assembling Based on Ps-rc Strategy with Priority Queues in CRNs".Wireless Communications and Mobile Computing 2022(2022).