下一代广播电视网无线系统  

Next-Generation Broadcast Network Wireless Systems

作　　者：封松林[1] 解伟[2] 

机构地区：[1]中国科学院上海高等研究院,上海201203 [2]国家广播电影电视总局广播科学研究院,北京100045

出　　处：《中兴通讯技术》2011年第4期14-18,共5页ZTE Technology Journal

基　　金："十一五"国家科技重大专项(2009ZX03005-004)

摘　　要：基于下一代广播电视无线网(NGB-W)技术需求分析,文章给出了两种广播与双向通信融合的网络架构,讨论了下行广播传输、广播与通信融合数据推送、双向无线接入、频谱感知等方面涉及的关键技术,并探讨了NGB-W的应用前景。文章认为采用广播与双向通信融合网络,NGB-W系统可以充分利用超高频(UHF)频谱资源,根据各种信息业务的不同特点,有针对性地分配网络资源和频谱资源,选择最优传输方式,从而提高系统整体无线频谱利用率。This paper proposes two network architectures in which broadcast and bidirectional communications are converged.These architectures are based on the next-generation broadcast wireless network（NGB-W）.This paper discusses the application prospects of NGB-W and key technologies such as downlink broadcast transmission,data push of converged broadcast and communications,bidirectional wireless access,and spectrum sensing.It suggests that by using a converged broadcast and bidirectional communication network,the NGB-W system can make better use of ultrahigh frequency（UHF） spectrum resources,distribute network and spectrum resources more efficiently,choose suitable transmission schemes for various services,and improve efficiency in wireless spectrum use.

关 键 词：下一代广播电视网 下一代广播电视网无线系统 广播与通信融合 网络架构 推送 

分 类 号：TN948.3[电子电信—信号与信息处理]