新型车地无线通信eLTE-U的综合承载研究及测试
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摘要
基于对比研究及测试验证的方法研究了非授权频段(5 725～5 850 MHz)承载的eLTE-U技术发展背景、传输模型、传输性能以及与WiFi技术的友好共存性.研究结果表明,该技术可以满足中低运量城市轨道交通车地无线通信系统对大带宽、低时延、高速移动切换、高抗干扰性、高可靠性及9级服务质量保证(QoS)的要求,支持面向5G技术的平滑演进,是现有授权频段LTE-M车地无线通信技术的有效补充.同时,结合工程实践测试验证了eLTE-U综合承载信号控制系统(CBTC)、乘客信息服务系统(PIS)及视频监控系统(CCTV),以及乘客无线上网服务业务,达到了城市轨道交通车地无线通信综合承载的技术要求.
Based on the comparative research and test verification methods,this paper studies the development background,transmission model,transmission performance and friendly coexistence with WiFi technology of unlicensed frequency band(5 725～5 850 MHz).It shows that this technology can meet the requirements of broad bandwidth,low latency,high speed mobile switching,high anti-interference, high reliability and 9-level quality of service(QoS) for medium and low-traffic urban rail transit vehicle wireless communication systems.It supports the smooth evolution of 5 G technology which is an effective complement to the existing licensed LTE-M vehicle wireless communication technology.Combined with engineering practice tests,this study verified the eLTE-U(extend long-term evolution with unlicensed band) integrated carrier signal control system(CBTC),passenger information service system(PIS),video surveillance system(CCTV),and passenger wireless Internet service services have met the technical requirements for the integrated load-bearing wireless communication of urban rail transit vehicles.
Based on the comparative research and test verification methods,this paper studies the development background,transmission model,transmission performance and friendly coexistence with WiFi technology of unlicensed frequency band(5 725～5 850 MHz).It shows that this technology can meet the requirements of broad bandwidth,low latency,high speed mobile switching,high anti-interference, high reliability and 9-level quality of service(QoS) for medium and low-traffic urban rail transit vehicle wireless communication systems.It supports the smooth evolution of 5 G technology which is an effective complement to the existing licensed LTE-M vehicle wireless communication technology.Combined with engineering practice tests,this study verified the eLTE-U(extend long-term evolution with unlicensed band) integrated carrier signal control system(CBTC),passenger information service system(PIS),video surveillance system(CCTV),and passenger wireless Internet service services have met the technical requirements for the integrated load-bearing wireless communication of urban rail transit vehicles.
引文
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[2] AJAMI A K,ARTAIL H.On the modeling and analysis of uplink and downlink IEEE 802.11ax WiFi with LTE in unlicensed spectrum[J].IEEE Trans.Wireless Commun.,2017:5779-5795.
[3] ALDULAIMI A,ALRUBAYE S,NI Q,et al.5G communications race:pursuit of more capacity triggers LTE in unlicensed band[J].IEEE Vehicular Technology Magazine,2015,10(1):43-51.
[4] BERARDINELLI G,RUIZ T L A,FRATTASI S,et al.OFDMA vs.SC-FDMA:performance comparison in local area imt-a scenarios[J].Wireless Communications IEEE,2008,15(5):64-72.
[5] CANO C,LOPEZ-PEREZ D,CLAUSSEN H,et al.Using LTE in unlicensed bands:potential benefits and co-existence issues[J].IEEE Communications,2016(12):184-188.
[6] CUI H,LEUNG V C M ,Ll S,et al.LTE in the unlicensed band:overview,challenges,and opportunities[J].IEEE Wireless Communications,2017:2-8.
[7] FATHI E ABD EI-SAMIE,FAISAL S AI-KAMALI.SC-FDMA for mobile communications[M].New York:Taylor & Francis Group,2017:34-77.
[8] 胡亚琦,岳云龙,牛博雅.基于QoS的LTE下行链路调度算法[J].兰州交通大学学报,2017,36(6):36-42.
[9] 张雁鹏,党建武,林俊亭.基于IEEE 802.11ac标准的城市轨道交通CBTC系统切换算法[J].兰州交通大学学报,2018,37(1):57-64.
[10] 陈晶杰.LTE关键技术研究:OFDMA,SC-FDMA,MIMO[J].中国新通信,2013(7):76-77.
[11] 孙同庆.基于LTE无线网络的综合业务承载研究[C]//第十一届中国智能交通年会.重庆:中国学术杂志电子期刊,2016:573-578.
[12] 张洲,黄纯昉,马文胜.城市轨道交通车地无线通信的应用[J].都市快轨交通,2014,27(6):16-19.
[13] 蒋海林,赵红礼,朱力,等.基于5.9GHz的TD-LTE的城市轨道交通通信系统测试研究[J].铁道学报,2016,38(5):53-59.
[14] 戴克平,张艳兵,朱力,等.基于LTE的城市轨道交通车地通信综合承载系统[J].都市快轨交通,2016,29(1):69-74.
[15] 朱东飞,洪婷.城市轨道交通车地通信综合承载系统LTE-M性能测试与分析[J].城市轨道交通研究,2017,20(5):171-175.
[16] 吴平.城市轨道交通CCTV系统发展及演变[C]//第十六届国际公共安全博览会论文集.深圳:中国公共安全,2016,47(18):153-159.
[17] 王力男,李昶,王永超.TD-LTE下行峰值吞吐量分析与计算[J].信息系统与网络,2015,45(2):1-4.
[18] 安然,王浩全,张秀林,等.下一代视频编码标准H.265的核心技术研究[J].计算机技术与发展,2014,24(4):210-213.
[19] 旷婧华,龙紫薇,邓伟.TD-LTE系统MU-MIMO外场测试性能分析[J].电信科学,2013,29(5):63-67.
[20] 于晓溪,谈振辉,章嘉懿,等.一种适合高速铁路的宽带无线接入网络架构[J].电信科学,2010,26(7):32-36.
[21] 方箭,王坦,黄标.高频段宽带无线通信前瞻[J].电信科学,2014,30(3):109-113.
[22] LAWRENCE M.5G RF for dummies[M].New Jersey:John Wiley & Sons,Inc.,2017:1-39.
[23] PARVEZ I,SRIYANANDA M,GUVENC I,et al.CBRS spectrum sharing between LTE-U and WiFi:a multiarmed bandit approach[J].Mobile Information Systems,2016(2016):1-12.
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