Delay performance analysis and access strategy design for a multichannel cognitive radio network

作     者：LI Xiao WANG Jun LI HuSheng LI ShangQian 

作者机构：National Key Laboratory of Science and Technology on CommunicationsUniversity of Electronic Science and TechnologyChengdu 611731China The Department of Electrical Engineering and Computer Sciencethe University of TennesseeKnoxville 37996USA 

基　　金：supported by the National Basic Research Program of China (2009CB320405) National Natural Science Foundation of China(61071102) National Science and Technology Major Project of China(2010ZX03006-002-02 and 2010ZX03005-003) the Foundation Project of National Key Laboratory of Science and Technology on Communications (9140C0202061004) 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2012年第57卷第28期

页      码：3705-3712页

摘      要：For a hierarchical cognitive radio network(CRN),the secondary users(SUs) may access the licensed spectrum opportunistically,whenever it is not occupied by the primary users(PUs).An important issue for this kind of CRN is the achievable qualityof-service(QoS) performance,such as traffic transmission delay,which is critical to the SUs traffic *** this paper,we focus on the delay performance analysis of the SU system and the design of the corresponding optimal access strategy for the case of SUs sharing multiple licensed *** our analysis,the transmission of PU and SU traffic is modeled as M/G/1 *** merging the PU and SU traffic,we propose the model of a priority virtual queue on the licensed *** on this model,we obtain the expected system delay expression for SU traffic through M/G/1 preemptive repeat priority queuing *** the case of multiple licensed channel access,the access strategy is further investigated with respect to the expected system delay for SU *** minimizing the expected transmission delay,the optimal access strategy is modeled as a nonlinear programming problem,which can be resolved by means of the classic Genetic Algorithm(GA).Numerical results validate our analysis and design of an optimal access ***,by considering the time taken by the GA approach,we can also adopt the inverse proportional access strategy to obtain near-optimal results in practice.

主 题 词：网络性能分析 访问策略 传输延迟 认知无线电 设计 多通道 非线性规划问题 M/G/1 

学科分类：12[管理学] 1201[管理学-管理科学与工程类] 08[工学] 081201[081201] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11434-012-5344-3

馆 藏 号：203145709...