5G语音解决方案EPS FallBack研究

语音IP化是当前语音解决方案的主流趋势,4G语音通过Vo LTE解决方案,大幅提升了语音质量。当前,5G建设如火如荼,SA商用开始,4G到5G的演进阶段,针对5G SA站点语音解决方案的EPS FallBack方案被提出。本文主要介绍EPS FallBack解决方案、部署要点以及实际测试情况。     

LTE融合语音方案研究

针对在TD-LTE网络部署后,利用现有IMS商用网络为TD-LTE用户提供融合语音业务的方案。分析了VoLTE的发展趋势、标准化情况,并提出了基于LTE和IMS的融合语音方案和测试方案。最后探讨了LTE融合语音业务引入移动市场的策略。     

一种电信声讯平台间节目共享实现方案的研究

本文从电信声讯业务共享节目资源的需求出发,研究探讨了一种利用电话会议资源实现声讯平台之间节目共享的技术实现方案,与传统语音外呼实现共享的方案相比,该方案大大减少了对长途语音话路资源的占用,使客户在收听节目过程中感知更好.     

LTE/EPC部署中的语音业务实现

语音业务是移动通信中最重要、最基本的通信业务。对3GPP提出的使用CS回退（CSFallBack）技术实现LTE/EPC部署中的语音业务方案进行了研究,分析了其网络架构和CS语音的实现过程,并对其他两种LTE运营商可能采用的语音实现方法进行了分析。     

探讨VOLTE的调度机制以及性能优化策略

由于我国现阶段的LTE无线接入网采用的是共享通道的方式,从而导致数据信息的传输与语音业务的竞争愈演愈烈.对此,如何采用科学的手段促进语音业务的调度机制不断完善,进而合理展开语音业务的调度,成为众多网络运营商完善VOLTE调度机制及优化其性能过程中的重要内容.本文正是在此背景下,针对我国目前VOLTE语音技术的应用发展情况以及其实际的优化设计方案进行科学论述,从而提出一种完善的VOLTE调度机制及性能优化策略.     

安捷伦推出首款将电缆验证与以太网服务测试仪相结合的软件

安捷伦科技公司新近推出一款针对WireScope Pro电缆认证测试仪的先进网络测试选件。该选件支持两种新型软件许可证,使网络管理员和网络解决方案集成商能够验证和预先验证IP业务的语音质量,并对以太网连接进行强化测试。这     

安捷伦科技公司推出电缆验证与以太网服务测试仪相结合的软件

安捷伦科技公司推出一款针对WireScope Pro电缆认证测试仪的先进网络测试选件。该选件支持两种新型软件许可证，使网络管理员和网络解决方案集成商能够验证和预先验证IP业务的语音质量，并对以太网连接进行强化测试。     

安捷伦推出将电缆验证与以太网服务测试仪相结合的软件

安捷伦科技公司日前宣布,推出一款针对WireScope Pro电缆认证测试仪的先进网络测试选件。该选件支持两种新型软件许可证,这两种许可证使网络管理员和网络解决方案集成商能够验证和预先验证IP业务的语音质量,并对以太网连接进行强化测试——这些都将通过WireScope Pro来完成。     

VoLTE与OTT应用业务的自动测试方案与竞争分析

介绍Vo LTE及OTT(Over the Top)应用业务的自动化测试方案,简化运营商日常网络维护优化工作,借助自动化测试工具降低不必要的人力成本。通过测试,从不同维度对这两个应用业务进行对比。在互联网和Vo LTE语音并存时代,对比两个应用业务的优势和劣势,并对二者的应用发展趋势进行展望。     

FTTH语音业务接入IMS的技术研究

本文探讨了软交换在对大量小型语音网关应用模式支持程度上存在的问题,针对FTTH-语音业务解决方案提供了策略建议,并对FTTH语音业务接入IMS的关键问题进行了分析,提出了技术实现方案.     

Network architecture and traffic transport for integrated wireless communications over enterprise networks

A novel network architecture based on the IEEE 802.6 metropolitan area networks (MAN) is proposed to integrate the wireless and wired segments of a regional enterprise network (REN) within a city. This architecture functions like a distributed switch for all types of services, reducing traffic congestion by sharing the high capacity link dynamically and facilitating signaling, mobility management, call processing and network management through its distributed functions, transport facilities and broadcasting capability. It also serves as a peripheral gathering network of REN traffic for transport over a wide area ATM/BISDN, enabling integration of an enterprise's regional networks into a global EN. Two major wireless applications, i.e., wireless PABX (WPABX) and wireless LAN (WLAN) are discussed to illustrate the advantages of this MAN‐based architecture. Although a REN is likely to support a wide range of different services, voice and data will continue to be the predominant traffic generated by WPABXs and WLANs, respectively, and are also representative of isochronous and asynchronous multimedia traffic carried by future wireless networks. We compare the traffic capacity of several voice transport alternatives under integrated (voice/data) network traffic with various data traffic loads, and study voice and data integration under three different integration schemes by simulations. Results indicate that the MAN‐based architecture is most effective employing queue arbitrated (QA) access for asynchronous traffic, pre‐arbitrated access for constant bit‐rate isochronous traffic, and the new reservation arbitrated (RA) access for variable bit‐rate isochronous traffic, under a scheme that permits full sharing between QA and RA traffic. This revised version was published online in July 2006 with corrections to the Cover Date.     

城域传送网骨干层未来发展趋势

基于对现有移动传送网现状的分析,对于专线、话音等小颗粒业务,目前的SDH/MSTP网络已经提供了完善的解决方案。但面对爆炸式增长的大颗粒带宽业务,现有的网络和技术则无法很好的解决。城域网必须具备大容量、高带宽、多业务、高可靠性等能力,从而实现骨干层层面的宽带IP化业务支持能力。     

5G网络共享共建方案

5G是面向未来通信发展需求的移动通信网络,由于工作频率较高,在相同范围内需要建设更多的基站,投资成本巨大。网络共享将是运营商加快5G商用进程及“降本增效（降低成本,增加效益）”的有效途径。通过分析SA/SA、SA/NSA架构下的网络共享方案,探讨了5G网络共享的可能性,对于5G网络共享建设给出了系统化理论依据。     

EPS语音解决方案探讨

随着LTE网络部署,如何实现EPS语音连续性覆盖是各大电信运营商面临的主要问题。文章对CSFB、Vo LTE+SRVCC、多模双待终端等EPS语音解决方案的网络架构和基本流程进行介绍,对三种EPS语音解决方案进行分析和比较,给出了不同场景下EPS语音解决方案建议和部署策略。     

5G SA的网络架构和关键技术

SA是5G网络演进的目标架构,当前处于商用准备阶段。由于5GSA采用全新的服务化架构、虚拟化部署,是网络架构的深刻变革,在网络部署、运营、业务模式等多方面存在一系列新的问题和挑战。描述了5G SA的总体网络架构、跨区域漫游架构、4G/5G互操作架构、全国组网架构,分析和探讨了5GC网元实现、虚拟化部署、网络切片与切片管理、边缘计算、语音、智慧运营等方面的架构、方案和关键技术。     

5G SA携号转网组网方案研究

2019年5G商用启动和携号转网全国正式服务启动备受社会各界关注,当前的携号转网技术方案能够支持5G NSA业务,但不能支持5G SA业务。随着5G SA标准和产业链的成熟,为确保携号转入用户在同等条件下享有同等权利,运营商在制定5G SA的商用计划时,有必要对5G SA的携号转网组网和实施方案进行同步研究,以推进5G SA设备对携号转网功能的研发和成熟。     

Voice evolution

This paper explores the future of voice in BT, in terms of market drivers, technology solutions and simple economics. It considers the overall market for voice services in the UK and the directional conclusions which may be drawn. The pressures on the current PSTN platform are explored along with potential solutions to these issues. The paper then goes on to review voice over IP services which range from best-effort, Internet-based through to high-quality corporate services, and provides a perspective on the market for these services, together with their technical maturity. The paper then reviews the opportunities provided by multimedia calling, and explores how these services can be delivered. Taking these areas as a whole, it then proposes a flexible architecture which can be used to deliver all of these services in the context of an uncertain future market-place, providing the flexibility required to mitigate against the uncertainties in both the current and future market environments.     

基于ATM AAL-2的话音业务

电信网正朝着网络融合和业务综合的方向发展,要实现宽带网与现有窄带电信网络的有效融合,就要求宽带网能够很好地支持现有窄带网络或PSTN中的话音业务,实现话音的包传输与交换。ATM论坛最新通过的基于AAL-2承载话音业务的标准,为实现ATM宽带网与窄带网的融合提供了一个新的途径。本文根据ATM论坛基于AAL-2的话音中继标准,介绍AAL-2话音业务的原理,并给出基于AAL-2话音业务的网络融合方案。     

Bandwidth-On-Demand Networks — A Solution to Peer-To-Peer File Sharing

An important driver for the take-up of broadband services has been peer-to-peer file-sharing programs like Napster, which enables users to freely share around music and now video files. This is putting network operators and service providers in an awkward position as they are under pressure to shut down or limit access to such applications, as the majority are operating illegally since the content owner does not get any revenue. Current activities to protect copyright focuses on either keeping the contents secure (digital rights management) or tackling the distribution mechanisms via the courts.Neither of these are complete solutions. This paper describes a third way which utilises bandwidth-on-demand network capabilities to make content sharing more controllable. Although this will not prevent video piracy completely, it should discourage it sufficiently to minimise the problem. This should also appeal to network operators as bandwidth is still relatively expensive. The network solutions developed to prove the concept build on the capabilities in the current ATM-based ADSL network, but an option for an all-IP network is also described.     

共享网络和GSM／GPRS／WCDMA无缝网络——3G网络建设两大趋势

市场形势的变化决定着移动运营商的经营战略,当前在3G的建设中呈现两大趋势:共享网络和双模无缝网络。在建网初期,通过与GSM共用核心网,运营商可以有选择地建立WCDMA覆盖,在双模手机的支持下,通过切换技术,无缝地、透明地为用户提供多种语音和数据业务。而通过与其他运营商共享网络,可以实现快速覆盖,快速启动和运营业务,而且可以在完全保护已有投资的基础上逐步过渡到自己独立的网络。