未授权频段LTE-LAA与WiFi共存系统性能分析

发布时间：2018-01-08 22:20

  本文关键词：未授权频段LTE-LAA与WiFi共存系统性能分析　出处：《东南大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

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【摘要】：为分析在未授权频段授权辅助接入(LAA)框架与无线局域网802.11系列标准(Wi Fi)共存的系统公平性问题,基于当前LAA框架的类型B(type B),建立了LAA系统与Wi Fi系统的共存模型.使用二维离散马尔可夫(Markov)模型对type B接入过程的‘说之前听’类型3(LBT Cat3)进行建模分析,进而建立共存模型.通过更改共存的设备数量和LAA设备的LBT Cat3参数,分析LAA设备与Wi Fi设备在共存场景中的性能.根据分析模型创建相应仿真场景,以验证分析模型性能.分析计算结果与仿真计算结果表明,提出的分析模型在不同LAA与Wi Fi设备数量比和不同LBT Cat3参数情况下均能有效预测共存的LAA与Wi Fi设备成功占用信道比率.LAA系统适当调整LBT Cat3参数可以实现与Wi Fi系统公平共存和最大化信道利用率.
[Abstract]:Analysis on unauthorized access authorization (LAA) band auxiliary frame and 802.11 series wireless LAN standard (Wi Fi) problem of system fairness coexist, the framework of LAA type based on B (type B), a model of LAA system and Wi Fi coexistence system. Using the two-dimensional discrete model of Ma Lekov (Markov) type B access "listen before talk" type 3 (LBT Cat3) are analyzed, and then establish the coexistence model. Through the LBT Cat3 parameter change quantity of equipment and the coexistence of LAA equipment, LAA equipment and Wi analysis of Fi equipment in the scene can coexist. Create the corresponding simulation model according to the scene analysis, to verify a performance analysis model. The calculation results and the simulation results show that the proposed model in a number of different LAA and Wi Fi and LBT Cat3 devices than different parameters under the condition can effectively predict the coexistence of LAA and Wi Fi equipment successfully occupied the letter The proper adjustment of the LBT Cat3 parameters by the channel ratio.LAA system can achieve fair coexistence with the Wi Fi system and maximize the utilization of the channel.

【作者单位】： 东南大学移动通信国家重点实验室;
【基金】：国家自然科学基金资助项目(61571111)
【分类号】：TN92;TN929.5
【正文快照】： 第三代合作伙伴计划(3rd generation partner-ship project,3GPP)提出基于长期演进技术的授权辅助接入(licensed-assisted access framework forlong-term evolution,LTE-LAA)框架,用于将蜂窝网络中部分业务卸载到未授权频段.未授权频段充斥着大量无线局域网80.11标准(wireles，

本文编号：1398912