用户决策在异构认知网络接入中的算法研究
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1.辽宁工程技术大学电子与信息工程学院葫芦岛125105;2.辽宁省无线射频大数据智能应用重点实验室 葫芦岛125105;3.中国铁塔股份有限公司大连市分公司大连116011

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TN014

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国家重点研发计划(2018YFB1403303)、辽宁省博士启动基金(2019-BS-114)项目资助


Access selection algorithm based on user-driven for heterogeneous cognitive radio networks
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1.School of Electronic and Information Engineering, Liaoning Technical University, Huludao 125105, China; 2.Liaoning Key Laboratory of Radio Frequency and Big Data for Intelligent Applications, Huludao 125105, China; 3.China Tower Co., Ltd., Dalian Branch, Dalian 116011,China

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    摘要:

    由于用户体验在当今通信系统的发展中起着越来越重要的作用,体验质量(QoE)成为了一种广泛使用的度量标准,它直观地反映了终端用户对无线服务的体验感受。针对智能家居环境中多业务多信道的异构认知无线电网络(Het-CRN)当中的接入与分配问题,提出了一种基于QoE驱动的无线资源分配方案,该方案结合改进的简单加权法(SAW)和层次分析法(AHP),全面评估了用户偏好、业务需求以及影响用户体验的信道参数,以获取不同业务的客观权重和主观权重,并进一步计算出综合权重。同时,采用排队论以离散时间马尔科夫模型对系统状态进行建模,能够有效的对不同用户负载下的行为进行分析,进而对不同的接入与分配算法进行性能评估。仿真结果表明,所提出的综合权重法相对于SAW法和AHP法,显著提高了不同业务的用户满意度,显著提升了用户体验质量。通过结合相对标准偏差对性能结果的分析进一步证明了综合权重法吞吐量、时延、拒绝率等关键性能指标上展现出更高的精密度,更准确地满足了用户的实际需求。

    Abstract:

    In the evolution of contemporary communication systems, user experience plays an increasingly vital role, making quality of experience (QoE) a widely utilized metric that intuitively reflects the end-users’ perception of wireless services. To addresses the access and allocation problems within Het-CRN in smart home environments with multi-service muli-channel, a QoE-driven wireless resource allocation scheme is proposed. This scheme combines the improved simple additive weighting (SAW) and analytic hierarchy process (AHP) method to comprehensively evaluate the user preferences, service requirements, and channel parameters that affect user experience to obtain the objective and subjective weights of different services and further calculate the comprehensive weighs. In this scheme, a Markov model is established to describe the Het-CRN system state based on queuing theory. The model can effectively analyze the behavior under different user loads. Thus, the performance of different access and allocation algorithms can be evaluated by using the proposed scheme. Numerical results show that the proposed comprehensive weighting method significantly improves the user satisfaction of different services and significantly improves the quality of user experience compared to the SAW and AHP methods. By analyzing the performance results in conjunction with the relative standard deviation, it is further demonstrated that the comprehensive weighting method exhibits higher precision on key performance indicators such as throughput, delay, and rejection rate, and more accurately meets the actual user needs.

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王诗,严洁,蓝浩,张波,王昕.用户决策在异构认知网络接入中的算法研究[J].电子测量与仪器学报,2024,38(10):224-234

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  • 在线发布日期: 2024-12-16
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