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鉴于IPTV、群组通信以及车联网多播/广播等业务不断增长的需求,5G网络中引入了基于新空口(newradio,NR)的5G多播/广播业务(Multicast/BroadcastService,MBS)技术。本文首先介绍了5G MBS多播/广播网络架构,引入了MB-SMF、MB-UPF、MBSF、MBSTF网元;接着从网元选择、部署方式、容灾方式等多角度对部署方案进行了分析,并给出了建议;最后对多播/广播业务引入给出了建议。 相似文献
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本文概述了3GPP R17版本正在开发的5G新空口(NR)组播广播服务(MBS).5G NR组播广播服务基于通用5G NR网络,可将流媒体或数据传输到各类型通用的5G终端,实现广播服务的泛在化应用及业态创新.3GPP中NR MBS的标准化工作包括业务需求、系统架构、无线接入、安全及应用层等方面.中国广电(CBN)一方面... 相似文献
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5G时代已全面开启,中国广电依托丰富的广播电视资源,通过5G NR广播制作播出特色频道,与应急广播等部门开展合作,开展应急信息播发,进一步发挥广播电视服务群众、服务基层的公共服务属性,以吸引更多的用户,实现差异化发展.本文通过研究应急广播系统与5G NR广播播出系统的优势与不足为将来技术实现提供一些参考. 相似文献
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朱光灿 《电子技术与软件工程》2020,(5):8-9
本文针对现阶段5G技术已经逐步进入到实际应用的阶段,深入讨论和介绍5G技术的关键,对于增强社会公众对相关技术的认识,加快5G技术的推广和应用具有非常重要的作用。 相似文献
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随着5G的不断发展,人们开始逐步研究5G支撑无线广播的潜力。因此,详细总结欧洲5G技术在广播上的潜在应用,介绍5G用于广播的相关问题,如接入、服务可靠性、发射机功率、频率以及覆盖距离等。 相似文献
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目前,全球运营商正在紧锣密鼓的进行5G商用部署,如果说4G改变生活,那么5G改变社会,5G作为一个网络时代最重要的基础设施,将为各行各业的提质发展提供技术前提。5G广播在5G技术中亦有重要作用,本文介绍了5G广播应用场景、特点和广播/组播技术,分析了5G广播的基本应用和面临的技术问题。 相似文献
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5G NR组播广播可以被用来提供应急和公共安全、车联网、IPv4/IPv6组播传输、IPTV、软件交付、群组通信和物联网等服务。该标准制定得到了世界范围内部分运营商和设备商的支持,国内广电行业对利用此功能开展广播电视和网络视听业务寄予厚望。本文主要对5G NR组播广播的设计思想、系统架构、会话过程、数据传输和现有功能等进行总体的介绍和分析。 相似文献
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George Xylomenos Vasilis Vogkas George Thanos 《Wireless Communications and Mobile Computing》2008,8(2):255-265
This article provides an overview of the multimedia broadcast/multicast service (MBMS) for universal mobile telecommunications system (UMTS) networks. We first outline the features of UMTS networks as defined by the 3rd generation partnership project (3GPP) in order to provide a background for the discussion to follow. We then present the overall MBMS architecture, the services that it provides to the users and the differences between the broadcast and multicast options. The implementation details of MBMS are explained in terms of the modifications needed to the network, the new signaling procedures required and the impact of MBMS on the radio part of the network. We then describe how the security architecture of UMTS is used to support content protection and key distribution for MBMS groups. We evaluate the prospects of MBMS by comparing it first with IP multicast and then with DVB‐H, considered by many to be the closest competitor of MBMS. Finally, we conclude with a discussion of the technical and business challenges still faced by MBMS. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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Comparison of multicast/broadcast services in Long Term Evolution Advanced and IEEE 802.16m networks
Jorge Calabuig Jose F. Monserrat David Martín‐Sacristn Joan Olmos 《Wireless Communications and Mobile Computing》2014,14(7):717-728
This paper performs a comparison of multicast/broadcast services (MBS) support in Long Term Evolution Advanced (LTE‐A) and Worldwide Interoperability for Microwave Access (WiMAX) IEEE 802.16m. Firstly, the main technical features of both standards concerning MBS operation are presented. It is shown that WiMAX offers higher unicast/MBS multiplexing flexibility as it supports both frequency and time multiplexing schemes, whereas LTE‐A only includes time multiplexing. Besides, only WiMAX supports multi‐antenna transmission. Next, the results of two simulation‐based assessments are presented. In the former, it is considered a scenario with all cells transmitting the same MBS service. The effect of inter‐site distance (ISD) on the maximum MBS data rate is evaluated. Results show that WiMAX configurations outperform LTE‐A for small ISD. This is because WiMAX provides a higher number of resources dedicated to data transmission for the same bandwidth. Furthermore, some WiMAX configurations support two spatially multiplexed data streams. With higher ISDs, LTE‐A outperforms single‐stream WiMAX configurations. In the second assessment, a MBSFN area surrounded by interfering cells is considered to compare unicast/MBS multiplexing performance. The higher maximum MBS data rate is achieved in WiMAX with time division multiplexing, which is precisely the only alternative included in LTE‐A. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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本文主要基于广播电视安全播出技术的基本内容,并针对当下安全播出技术仍存在的问题,提出了相应的优化策略,在推动广播电视播出技术产业进一步发展的基础上,为社会可持续、和谐稳定化发展目标的实现奠定良好基础。 相似文献
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To avoid the traffic congestion in long term evolution (LTE) networks,a min-max load balancing (LB) scheme is proposed to minimize the demanded radio resources of the maximum loaded cell.For the mixed ... 相似文献
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电视节目的安全播出是播控工作的重中之重.随着广电总局的62号令及其实施细则的出台,为电视播控安全播出工作提出了要求,指明了方向.结合62号令及实施细则,以安全播出的角度,主要从播出技术系统的7个主要环节,简述大连广播电视台电视播控系统的安全播出设计. 相似文献
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伴随着我国现代化社会的深化发展,科技的飞速进步,越来越多的家庭中都拥有了数字电视,数字播控技术在之后的时间里,一定是向着创新和标准的方向前进。目前,我国在数字播控技术上的钻研还在逐渐深化当中,本文将针对数字播控技术基础上的电视台播出系统进行优化研究,以期为电视台节目的播出可靠性带来有效的参考价值。 相似文献
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