宽带移动通信的现状和展望

本文介绍了第三代移动通信技术发展走势和未来主要的应用可能.回顾了第三代移动通信国际伙伴组织在标准化方面的工作和起到的关键作用,特别分析了最新的第三代移动通信标准化工作的主要内容和未来移动通信的可能发展方向.最后介绍了中国移动通信设备商在第三代通信设备研制和生产方面的进展.     

宽带无线通讯的现状和展望

本文从移动通信业务发展情况入手介绍了第三代移动通信技术的原因和未来主要的应用可能。回顾了第三代移动通信国际伙伴组织在标准化方面的工作和起到的关键作用,特别分析了最新的第三代移动通信标准化工作的主要内容和未来移动通信的可能发展方向。最后介绍了中国移动通信设备商在第三代通信设备研制和生产上的进展。     

第三代移动通信的发展现状及分析

介绍了移动通信的发展现状、国际上第三代移动通信的标准化现状、第三代移动通信的实用化进程、我国第三代移动通信的标准化现状等。     

第三代移动通信的发展现状及分析

介绍了移动通信的发展现状、第三代移动通信在国际上的标准化现状、第三代移动通信的实用化进程、我国第三代移动通信的标准化现状等。     

第三代移动通信系统（上）

在简要介绍第三代移动通信系统的基础上,对其特性、标准化的制定、各国无线频率的划分、３种提案的技术特点、主要参数等方面进行概述,提出对未来第三代移动通信系统的发展应关注的几方面问题,以及运营者在目前日益激烈的竞争环境下应关注第三代移动通信系统的进程,以适应未来移动通信系统的发展,满足未来市场的需要。     

第三代移动通信系统标准介绍

对第三代移动通信技术标准化工作和组织进行了介绍。从中可以看出,国际上对第三代移动通信的研究和标准化工作已取得了重大进展,ＩＭＴ－２０００的标准化工作将于２０００年底基本完成。但是,真正制定出一个详细完整的３Ｇ标准还有许多路要走。因此,加快研制３Ｇ系统的步伐是国内外主要通信设备制造商的竞争焦点。     

第三代移动通信标准化研究的最新进展

本文介绍了第三代移动通信的无线传输技术与网络标准化研究的最新进展,其中包括国内外第三代移动通信标准化组织的情况,以及最近的ITU-R TG8/1会议和3GPP会议有关标准化研究的新成果.     

第三代移动通信发展概况

介绍了第3代移动通信3种主流技术的市场应用、设备成熟度，以及国际和国内标准化发展状况，我国第3代移动通信技术试验的总体情况。     

更迅捷、更灵活、更全面──第三代移动通信漫谈

本文介绍了第三代移动通信的目标,简明描述了这种未来系统的综合功能和网络结构,以及 第三代移动通信的标准,最后阐述了我国移动通信如何向第三代迈进。     

中国3G高级研讨会在京召开

１０月１９日至２０日,第三届中国国际第三代移动通信高级研讨会在北京隆重召开。本届研讨会由中国信息产业部和中国科学技术部联合主办,来自中国移动运营企业、国内外研究机构和设备制造商的专家到会并就第三代移动通信进行了深入研讨。 近年来,移动通信的快速发展使得移动通信的频率和容量远远不能满足要求,加之近年来多媒体通信的兴起,要求移动通信同时也能适应高速率、宽频带的要求,第三代移动通信的开发和发展引起了各国的重视。特别是随着中国移动通信的发展,中国的移动通信用户数已列世界第二位,并将成为未来世界上最大的移…     

3GPP中URLLC标准研究进展

为了应对未来移动流量与设备连接数量的爆炸式增长,第五代通信系统(5G)将通信服务从人与人之间通信渗透到物联网及各种垂直行业领域,3 GPP从NR第一个版本开始就开展了针对低时延高可靠通信的标准研究工作。首先概述了URLLC在3GPP中研究的标准化进程;然后列举了URLLC用例与需求,基于多样化的需求指标,详细介绍了使能URLLC业务的物理层关键技术与其在3GPP各个阶段的研究进展;最后,总结全文并对未来URLLC技术的发展做出展望。     

An access-aware pricing strategy for the evolved packet system

The evolved packet system (EPS) integrates third generation partnership project (3GPP) and non-3GPP wireless access networks to provide mobile users with ubiquitous access to a diverse set of multimedia services. As we know, 3GPP and non-3GPP access networks differ significantly with respect to bandwidth capacity, coverage range, and service cost. It is crucial to enable efficient load balancing between 3GPP and non-3GPP access networks to improve resource utilization, and still maximize revenue generation. From an economic point of view, pricing plays an important role in achieving load balancing in the EPS. This paper proposes an access-aware pricing strategy for the EPS to achieve load balancing between 3GPP and non-3GPP access networks and to maximize revenue generation for network operators. In addition, this paper develops an analytical model for the system using the proposed access-aware pricing strategy. With the analytical model, this paper also proposes an iterative method for determining the optimal pricing that maximizes revenue generation in the EPS. The analytical model is verified by simulation.     

第三代移动通信网的位置服务体系结构

讨论了3GPPUTRAN第三代移动系统标准的客户服务端体系结构和操作,以及在未来移动通信网络中的应用。     

移动IP技术在第三代移动通信中的应用

本较全面地介绍了移动IP技术及其扩展方案，并详细分析了移动IP技术在第三代移动通信3GPP和3GPP2网络中的应用情况。     

Wireless Security

This paper describes the security features incorporated into the third generation (3G) mobile system developed in 3GPP, specifically the enhancements to the shared secret symmetric authentication scheme as used in GSM. The proposed security architecture for the Internet multimedia subsystem (IMS) based on and built upon Internet applications, services and protocols, is then described. Finally, the paper describes some early work by 3GPP to integrate public key security mechanisms into 3G, while maintaining the global reach and call set-up performance, that mobile users now take for granted.     

Heterogeneous Networks to Support User Needs with Major Challenges for New Wideband Access Systems

Third generation mobile radio systems are currently being deployed in different regions of the world. Future systems beyond the third generation are already under discussion in international bodies and forums such as ITU, WWRF and R&D programs of the European Union and in other regions. These systems will determine the research and standardization activities in mobile and wireless communication in the next years. Based on the experience from the third generation future systems will be developed mainly from the user perspective with respect to potential services and applications including traffic demands. This is directly related to the paradigm shifts from the first generation to systems beyond third generation. International bodies are already discussing basic system requirements. The basic system architecture of heterogeneous networks with different complementing access systems is from the today's perspective the most economic approach for systems beyond 3G to satisfy user and operator needs for reasonable cost. Such system architectures enable the deployment of system capacity according to the traffic requirements with the user experience ``Optimally Connected, Anywhere and Anytime' with seamless service provision between different access systems. New radio interface components with high data rate as additional components of systems beyond 3G are being proposed in international bodies. Key issues of such systems are coverage due to reduced range and the huge spectrum demand. In this paper the international context, the user perspective, revenue and traffic expectations are presented. This results in the basic system requirements and the potential system architecture of heterogeneous networks. Major challenges for the new wideband radio interfaces are the impact on range and spectrum demand. Basic investigations are presented on these issues to critically review requirements on future systems.     

LTE随机接入过程研究

3GPPLTE是第三代移动通信系统演进的重要方向,随机接入过程直接影响系统的稳定性。首先介绍了LTE随机接入的概况,然后结合MAC子层和RRC子层着重剖析了基于竞争模式的随机接入过程的协议流程,说明了RRC消息中各参数的作用及意义。     

从宽带无线接入与宽带移动通信技术的融合看B3G技术的发展趋势

本文总结与比较了3GPP长期演进技术、3GPP2空中接口演进技术、IEEE 802.16e WiMAX技术和IEEE 802.20 MBFDD/MBTDD技术的标准化进程、系统需求和核心技术.在此基础上,本文讨论了宽带无线接入技术和宽带移动通信技术的融合趋势,并探讨了超3G技术的发展方向.     

第三代移动通信系统卫星移动网标准的研究状况

未来的卫星移动通信网是第三代移动通信系统的重要组成部分 ,本文介绍ITU和ETSI围绕其标准化工作所进行的研究情况 ,包括系统目标与设计准则、轨道星座、频率分配 ,以及标准化工作的研究内容等。     

The 3GPP proposal for IMT-2000

Market expectations for third-generation mobile radio systems (IMT-2000) show an increasing demand for a wide range of services from voice to low, high, and advanced data rate services to support mobile multimedia. This leads to technical requirements for IMT-2000 which are currently being standardized worldwide. Circuit- and packet-oriented services will be supported. These systems will operate in all radio environments to provide service to anyone, anytime, anywhere. The ITU has identified spectrum for the allocation of IMT-2000. However, these frequency bands are currently not available worldwide. In different regions research activities on IMT-2000 have been initiated to support the international consensus building process and standardization activities. Based on these activities system proposals have been submitted to ITU TG 8/1. In particular, the newly formed Third Generation Partnership Projects 3GPP and 3GPP2 have the objective of harmonizing similar proposals and defining detailed standards. Proposals from Europe, Japan, Korea, and the United States are very similar. The evolution and migration of second-generation systems to the third generation takes into account the deployed investment to save today's investment where useful and necessary. This article focuses on market and technical requirements and, in particular, the technical approach of 3GPP based on the big footprint of the GSM system