网间互联互通

本主要研究网间互联互通的问题，首先叙述互联互通的含义以及目前互联互通网络结构，然后提出一种新的中心型互联互通网络结构，且该中心型互联互通网络结构解决两两互联互通网络结构所存在的不足。并对该中心型网络结构商用作进一步的探讨。     

网间互联互通

本文主要研究网间互联互通的问题,首先叙述互联互通的含义以及目前互联互通网络结构,然后提出一种新的中心型互联互通网络结构,且该中心型互联互通网络结构解决两两互联互通网络结构所存在的不足。并对该中心型网络结构商用作进一步的探讨。     

国内运营商国际互联网互联互通思路及应对建议

随着国内运营商加大海外互联网市场的拓展力度，中国电信、中国联通等运营商通过自建海外IP网络、与国际运营商网络互联互通等方式扩大网络全球覆盖、提升网络可达范围及引入更丰富互联网资源。本文从互联互通架构、模式及思路等出发，并提供国际互联网互联互通相关应对建议。     

运营商IMS网间互联互通组网关键技术研究

随着近年来4G和5G网络技术的快速发展,传统的互联互通方式已经不能满足未来的业务发展,因此通过IMS网间实现IP方式的互联互通成为了运营商网络演进的必由之路。对IMS网间互联互通中涉及的关键组网技术和现有网络的调整改造做了深入的分析和研究,为后续运营商IMS网间互联互通的商用部署和工程建设提供了重要的思路和方法。     

下一代网络的互联互通监测系统

本文主要研究下一代网络的互联互通监测系统，首先叙述网间互联互通监测系统以及目前网间互联互通监测系统的总体结构，然后提出NGN的互联互通监测系统结构，并对该NGN的互联互通监测系统结构进行详细分析。     

网间互联互通IP化方案浅析

通过分析目前通信网络发展速率和视频直播、VR、视频彩铃等新型业务的发展需求,发现通信网络不断升级迭代,由传统TDM网络向IP化演进。目前国内通信运营商已完成各自网内主要网元的IP化工作,网间互联互通的IP化工作也在整体安排下有序地开展。提出电信运营商互联互通IMS网络IP化方式及网间互联互通IP化策略,并通过建立网间互联互通IP化信令层及媒体层模型,设计了网间互联互通网络IP化解决方案。     

电信网络互联互通问题分析

分析了电信网络互联互通所涉及的范围及其存在的问题，探讨了解决电信网络互联互通现存问题的途径和办法。     

下一代网络——NGN

随着信息技术的迅速发展，基于电路交换的传统网络正向以软交换为基础的下一代网络(NGN)不断演进。文中介绍了NGN的技术特点、网络结构和关键技术，并在此基础上分析了NGN与现有网络的互联互通。     

多域光网络互联互通技术

首先介绍了光网络设备的发展状况,然后分析了现有光网络域间互联互通中的主要问题,接着介绍了现有的几种关于多域光网络域间互联互通的技术,包括静态互联技术、GNMS技术、E-NNI技术、PCE技术和SDON技术.通过分析各种技术的优缺点,介绍了两种技术结合使用的方案.     

新北京电视中心媒资系统互联互通的设计

主要阐述了新北京电视中心媒体资产管理系统的网络架构,并着重介绍了对新中心媒资管理系统互联互通的设计。对后期制作．媒资、播出等系统的互联进行了分析。     

智能网技术及网间互通

智能网业务因业务本身性质的不同,要求应用的范围也不相同。实现智能网业务的网间互通,对于业务的生存及发展具有非常重要的意义。介绍了智能网的基本思想以及智能网的概念模型,详细分析了实现智能网业务的网间互通对业务的生存及发展的重要意义以及实现智能网业务网间互通的前提条件,并以被叫集中付费业务为例对实现智能网业务网间互通的方式进行了具体的探讨。     

下一代网络(NGN)互通框架模型的探讨

主要从网络分层的角度探讨了NGN和各种网络之间互通的实现方法。首先给出了NGN的互通功能模型，然后重点探讨了NGN与PSTN、H．323 VoIP网络以及IN网络的互通模型，分析了NGN和上述各种网络在传输层、交抛佳路层、应用层和网络资源4个层面上实现互通的要求和方法。     

IP网络与电信网的互通

要进一步扩大IP技术的应用领域,就必须考虑IP网络与其它现有网络的互通。文章在研究和分析ITU-T新起草的Y.1410建议的基础上,研究了IP网络与电信网络的互通概念、互通参考模型、互通单元的功能要求及互通方案等方面的内容。     

MPLS-TP分组传送网与现有网络互联互通的实现

在光传送网向分组传送网演进的过程中,网络之间的互联互通是运营商关心的主要问题之一.文章简要介绍了MPLS-TP(MPLS Transport Profile)分组传送网的网络构成,分析了在多种传送网并存的情况下,基于MPLS-TP分组传送网的多层网络结构,重点讨论了MPLS-TP分组传送网与IP/MPLS网络以及SDH/MSTP网络之间互联互通的实现方案.     

An efficient vertical handoff scheme for microcellular and macrocellular interworking

The next generation wireless network environments increasingly become integrated to support anywhere, anytime connectivity for various applications like multimedia, full‐motion video and high data rates with appropriate quality of service (QoS). With these emerging needs, interworking of microcellular and macrocellular networks has been accompanied by service providers. However, these networks have different technologies, which make efficient vertical handoff a challenging issue. In this study, an efficient vertical handoff scheme (EVHS) for interworking between microcellular and macrocellular networks is proposed and analyzed. The handoff decision criteria of the proposed scheme include crucial features like user mobility, network conditions, pricing issues, and user preferences in addition to the received signal strength (RSS). EVHS ensures the selection of the most appropriate network in terms of cost and acceptable QoS according to users' preferences. The results show that EVHS scheme outperforms other proposed schemes in the literature in terms of incompletion probabilities, grade of service (GoS) and cost without causing degradation in system utilization. Besides, although EVHS scheme is mainly intended for user satisfaction, the results show that it does not cause a significant degradation in the revenue of the service provider. Copyright © 2009 John Wiley & Sons, Ltd.     

T-MPLS层网络和以太网间基于PW的互通模型

目前的发展趋势表明,T-MPLS(传送多协议标签交换)将逐渐成为一种新的传送机制.文章介绍了端到端PW(伪线)模型,分析了T-MPLS网络的信号封装机制,提出了基于PW的T-MPLS层网络与以太网互通模型.在此基础上文章结合T-MPLS信号封装机制,详细讨论了基于PW的以太网互通模型.     

WLAN-GPRS Tight Coupling Based Interworking Architecture with Vertical Handoff Support

There have been parallel technological developments in wireless local network (WLAN) and cellular wide area network (WAN) technologies. This is evidenced by the boom in fast WLANs enabled devices, the spread of 2.5 G networks and the increasing emergence 3 G communication networks, applications and terminals. The prospects of integrating WLAN and cellular WAN technologies with support for seamless handoffs between the two heterogeneous have changed the mentality of researchers from considering WLAN technology as a threat to the future of wide area cellular networks to accepting the technology as a complementary solution. A number of architectures for interworking the two different network types have been proposed mainly based on the loose coupling interworking approach recommended by the ETSI. One of the main weaknesses anticipated with loose coupling architecture is excessive handoff latency, which may lead to data loss, traffic congestion and handoff failure. In this paper an architecture for interworking WLAN and the GPRS networks, based on the ETSI tight coupling approach, is proposed. Fredson Alfred Phiri holds a Master of Engineering Science (MEngSc) degree obtained from Multimedia University, Malaysia in 2005 and a Bachelor of Science degree in Electrical Engineering from the University of Malawi where he graduated in 2001. Mr. Phiri is currently working as a lecturer at the Polytechnic of Namibia (Namibia’s University of Science and Technology) where he also chairs the Electronics and Telecommunications (E-TEL) Research Group. He has previously worked as a lecturer at the University of Malawi, as a Telecommunications Engineer at Technocentre (Malawi), and as a Telecommunication Technician at the Malawi Telecommunications Limited (MTL). Mr. Phiri’s research interests include Integration of Mobile Data Networks, Network Programming and Powerline Communication. M.B.R. Murthy has obtained his B.E. (Electrical) from Andhra University, College of Engineering, Waltair, India, M.Sc (Engg) in Communication Systems from Regional Engineering College-Rourkela, India and PhD from Karnatak University, Dharwad, India. He has over 32 years of academic experience teaching under graduates and graduate students. He has vast research experience and has 43 publications in reputed journals and international conferences. He is a senior member at IEEE. He had six years of teaching and research experience at Multi Media University Malaysia. Currently he is Professor ECE and Dean PG engineering and R&D in GEC Gudlavalleru, India.     

PINT业务在软交换网络中的实现

文章介绍了智能网与Internet互通的原理,以及PINT(PSTN Internet iNTerworking)业务的基本概念和网络结构,并对PINT协议进行了分析.同时给出了智能网与Internet互联的模型,并结合点击拨号业务讨论了其具体的实现方式.最后讨论了互联时的安全问题.     

电路交换域与IMS互通研究

IMS是3GPP组织在R5版本上提出的支持IP多媒体业务的子系统,它最显著的特点是采用了SIP协议。现在,UMTS系统中包含三个域:电路交换域,分组交换域和IMS。IMS必须和传统的电路交换用户如PSTN用户进行交互,这篇文章对电路交换域和IMS的互通作了探讨。文章首先简要介绍了IMS中用于互通的网络实体及其功能,然后分别从控制平面和用户平面描述了IMS用户和电路交换域用户的互通,最后给出了控制平面上的SIP协议和ISUP协议的映射。     

VoLTE核心网组网及其VPN互通研究

首先分析了4G LTE的话音解决方案,然后阐述了Vo LTE核心网的原理及组网架构,最后研究了某通信运营商Vo LTE的试验网实际组网测试及其VPN互通策略,以期为Vo LTE的商用部署提供积极的决策参考。