基于排队模型的混合overlay/underlay频谱共享优化策略研究

doi:10.11959/j.issn.1000-436x.2017162

通信学报 ›› 2017, Vol. 38 ›› Issue (9): 55-64.doi: 10.11959/j.issn.1000-436x.2017162

基于排队模型的混合overlay/underlay频谱共享优化策略研究

刘建平^1,^2,^3,⁴,金顺福^1,^3,⁴,王宝帅^1,^3,⁴

¹ 燕山大学信息科学与工程学院，河北秦皇岛 066004
² 河北科技师范学院数学与信息科技学院，河北秦皇岛 066004
³ 河北省计算机虚拟技术与系统集成重点实验室，河北秦皇岛 066004
⁴ 河北省软件工程重点实验室，河北秦皇岛 066004

修回日期:2017-05-08 出版日期:2017-09-01 发布日期:2017-10-18
作者简介:刘建平（1980-），男，河北滦南人，燕山大学博士生，河北科技师范学院讲师，主要研究方向为网络资源分配与优化、排队论研究与应用等。|金顺福（1966-），女，朝鲜族，内蒙古满洲里人，燕山大学教授、博士生导师，主要研究方向为网络资源分配与优化、排队论研究与应用等。|王宝帅（1993-），男，河北保定人，燕山大学硕士生，主要研究方向为网络资源分配与优化。
基金资助:
国家自然科学基金资助项目(61472342);河北省自然科学基金资助项目(F2017203141)

Study on optimization strategy for hybrid underlay/overlay spectrum sharing based on queuing model

Jian-ping LIU^1,^2,^3,⁴,Shun-fu JIN^1,^3,⁴,Bao-shuai WANG^1,^3,⁴

¹ School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China
² School of Mathematics and Information Science ＆Technology,Hebei Normal University of Science ＆Technology,Qinhuangdao 066004,China
³ Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province,Qinhuangdao 066004,China
⁴ Key Laboratory for Software Engineering of Hebei Province,Qinhuangdao 066004,China

Revised:2017-05-08 Online:2017-09-01 Published:2017-10-18
Supported by:
The National Natural Science Foundation of China(61472342);The Natural Science Foundation of Hebei Province(F2017203141)

摘要/Abstract

摘要：

为了更好地提高认知无线电网络中授权频谱的利用率，并为系统用户提供更高质量的服务，采用排队博弈理论研究了混合overlay/underlay频谱共享方式的优化策略。面向认知用户建立了传输时间服从二相阶超指数分布的排队模型，并给出排队模型稳态分布的求解方法。基于收益—支出结构，研究了可视情形下认知用户的个体最优策略及不可视情形下认知用户的纳什均衡策略。以社会收益最优及授权频谱收入最大为目标，给出了认知用户使用授权频谱的接入费用。进行数值实验，揭示了不同策略之间的内在关系，并验证了收费方案的合理性。通过将混合 overlay/underlay 频谱共享方式下的社会最优收益与 overlay 频谱共享方式和 underlay 频谱共享方式下的社会最优收益进行对比，进一步表明了混合 overlay/underlay 频谱共享方式下的社会最优策略能更加稳定且高效地利用频谱资源。

关键词: 认知无线电网络, 混合overlay/underlay频谱共享, 个体最优, 社会最优, 接入费用

Abstract:

In order to improve the licensed spectrum utilization in cognitive radio networks,and provide higher experience quality to system users,the optimizing strategies of the hybrid underlay/overlay spectrum sharing mode was studied.For secondary users,a queuing model with service time following two phase order exponential distribution was constructed,and a method to obtain the steady state distribution was presented for the system model.Based on reward-cost structure,individual optimization strategy with observable case and the Nash equilibrium strategy with unobservable case were discussed.With purpose of optimal social benefit and maximal spectrum incomes,the pricing policies for secondary users to use licensed spectrum were formulated.Using the system experiment,the relations among the different optimal strategies were investigated,and the rationality of the price mechanism was verified.By contrasting the optimal social benefits gained by hybrid underlay/overlay spectrum sharing mode，overlay spectrum sharing mode and underlay spectrum sharing mode,it is further shown that the social optimization strategy of hybrid overlay/underlay sharing mode is more effective and stable to fully use the spectrum resource.

Key words: cognitive radio networks, hybrid overlay/underlay spectrum sharing, individual optimization, socially opti-mization, access price

中图分类号:

TP393

刘建平,金顺福,王宝帅. 基于排队模型的混合overlay/underlay频谱共享优化策略研究[J]. 通信学报, 2017, 38(9): 55-64.

Jian-ping LIU,Shun-fu JIN,Bao-shuai WANG. Study on optimization strategy for hybrid underlay/overlay spectrum sharing based on queuing model[J]. Journal on Communications, 2017, 38(9): 55-64.

图/表 8

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参考文献 18

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λ_su	R	q_e	q^*	k	S_w(q ^*)
0.70	16	1.00	1.00	10.76	7.53
0.70	20	1.00	1.00	14.76	10.33
0.70	24	1.00	1.00	18.75	13.13
1.20	16	1.00	0.72	9.38	8.06
1.20	20	1.00	0.77	12.60	11.63
1.20	24	1.00	0.81	15.89	15.41
1.40	16	0.87	0.62	9.38	8.06
1.40	20	0.90	0.66	12.60	11.63
1.40	24	0.95	0.69	15.89	15.41

基于排队模型的混合overlay/underlay频谱共享优化策略研究

Study on optimization strategy for hybrid underlay/overlay spectrum sharing based on queuing model

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