适用于高铁的混合广播与无线通信网络技术  

Hybrid Broadcasting and Wireless Communication Network for High Speed Railway

作　　者：熊箭[1,2] 陆靖侃[1] 归琳[1,2] 侯金鑫[2] 宋盼锦[2] 

机构地区：[1]上海数字电视国家工程研究中心有限公司,上海200125 [2]上海交通大学图像通信与网络工程研究所,上海200240

出　　处：《电视技术》2013年第18期43-47,共5页Video Engineering

基　　金：上海市科学技术委员会科研计划科技攻关项目(11511502801);国家工业和信息化部国家科技重大专项(2011ZX03001-007-03)

摘　　要：提出了一种适用于高速铁路的混合广播与无线通信网络技术。该技术利用广播和无线通信系统各自的特点,通过广播信道将公共的热点信息发布到高铁用户或终端;通过无线网络传输个性化的交互内容。该方案可以有效地提高在高速移动场景下用户的吞吐率。对基于国标数字电视技术进行了实验室测试,同时对基于高铁的LTE-R系统进行了仿真,结果证明:提出的混合网络方案在速度为350 km/h的高速移动场景下具有较好的性能,该方案可以有效地提高单用户的下行等效带宽,可以满足未来高速铁路开展多种多媒体业务的需求。A hybrid broadcasting and wireless communication network for high speed railway is proposed in this paper. The advantages of the broadcasting and the wireless network are respectively used. Then, the hot and common contents can be delivered to the users or the terminals by the broadcasting network, and the individual contents can be accessed by the wireless network. The proposed network can effectively improve the throughput of all the users in high speed scenarios. The laboratory test of DTMB system and the computer simulation of LTE-R system show that the proposed hybrid network has good performances, the average equivalent downlink throughput for every user is effectively improved, and the proposed scheme can meet the needs of many emerging services on the high speed railway.

关 键 词：高速铁路 数字电视地面广播 无线通信 DTMB LTE—R 

分 类 号：TN934.3[电子电信—信号与信息处理] TN929.53[电子电信—信息与通信工程]