Applying an object-oriented method to design a VPN bandwidth management system

This paper describes the application of the Fusion method to the design of a bandwidth management system for ATM-based virtual private networks as well as the rationale for selecting that particular general purpose object-oriented method. The system considered allows a vpn customer to dynamically modify the bandwidth allocated to vpn connections. The design process has focused on the software structures and interactions between them required to provide the desired functionality to the customer. Finally the vpn customer, value added service provider and network providers service management system interfaces have been designed and corresponding primitives are given.     

基于SLA的业务保障在光网络带宽租赁业务中的应用

电信管理网是一个庞大而复杂的网络，如何保障客户业务的质量是电信管理网需要解决的一个重要问题。本以电信管理网的TOM模型为基点，讨论基于SLA的业务保障管理系统的模型和功能实现，并以光传输网络的带宽租赁业务为实例来探讨SLA中的QoS参数的分析与计算，最后提出其系统的外部接口和功能的定义和实现。     

Layer 2 and 3 virtual private networks: taxonomy, technology, and standardization efforts

Virtual private network services are often classified by the OSI layer at which the VPN service provider's systems interchange VPN reachability information with customer sites. Layer 2 and 3 VPN services are currently being designed and deployed, even as the related standards are being developed. This article describes the wide range of emerging L2 and L3 VPN architectures and technical solutions or approaches, and discusses the status of standards work. Some specific L2VPN and L3VPN technologies described here include virtual private LAN service, transparent LAN service, BGP/MPLS-based VPNs (RFC 2547bis), virtual router, and IPSec VPN approaches. We discuss recent and continuing standards efforts in the IETF 12vpn and 13vpn working groups, and related work in the pseudo-wire emulation edge-to-edge working group, as well as in some other standards fora, and describe some mechanisms that provide membership, reachability, topology, security, and management functions.     

中国移动PTN客户接入设备的现状和规范化路径

随着中国移动对集团客户业务的重视程度越来越高,针对集团客户的网络服务标准越来越严格,以光纤收发器为代表的传统PTN客户接入设备已经无法满足集团客户网络服务管理要求,本文根据中国移动集团客户网络运维和成本控制等相关要求,深入探讨推动PTN客户接入设备规范化的方式方法,为中国移动集团客户业务的快速发展提供有力支撑.     

Intercarrier bandwidth exchange: an engineering framework

A mismatch between demand and supply for bandwidth is common in transport carrier networks. This mismatch is generally a result of the disparity between a carrier's capacity buildout and its anticipated customer demand. A carrier with temporary bandwidth deficit or lack of presence in a geographical region and a carrier with surplus capacity in the right locations can be brought together by the emerging bandwidth exchange technology. Bandwidth exchange offers a win-win solution, in which the carrier with a deficit avoids losing revenue by buying capacity from the carrier with surplus, and the latter makes additional revenue by retail sale of its excess capacity. While the concept of real-time purchase and exchange of bandwidth has attracted a lot of attention, many technical challenges stand in the way of making it a reality. The purpose of this article is to provide an engineering framework for enabling real-time bandwidth exchange with committed quality of service and service level agreement among transport carriers. Special emphasis is given to identifying the architectural requirements and the enabling infrastructure necessary for building a viable bandwidth exchange that can be used for creating revenue out of surplus stranded capacity. Indepth analysis of cross-carrier service level agreement specification, capacity publication, route design, and service provisioning are also provided in the article.     

基于Widget的家庭网络应用系统及终端业务探讨

随着城市光网的建设,用户家庭宽带普遍提速,如何填充家庭宽带业务、满足用户多样化的信息服务要求成为关键。本文提出了基于Widget技术的家庭网络应用系统,通过此系统架构可向家庭终端提供统一、快捷、易管理的综合信息服务。通过对比分析,阐述了本体系架构的优点和作用,并对其关键技术和难点进行了分析,提出了进一步完善的解决方法。同时,本文以家庭信息终端为例对典型业务场景和业务流程进行了介绍。     

电力客户经理服务助手系统的研究与应用

针对电力行业业务需求专业定制的客户经理服务助手,是基于云计算技术设计的全新话务控制系统,是集客户联络中心、销售服务及客户管理为一体的移动式通信服务系统。系统可自动按客户需求分配话路资源,实现定向服务,可实现工单的在线流转和处理,同时管理者只需登录客户端,就可以随时查看报表、调整绑定号码、并对员工进行实时的监控与管理,为客户提供集成化、高并发处理呼叫服务以及专业化、精细化、差异化的供电服务。     

集客业务综合运营支撑系统建设

本系统以集客业务全生命周期支撑为核心,以全流程驱动为主线。系统重点实现了基础信息管理、业务流程管理、计费账务管理、资源告警管理、服务质量管理、数据视图管理等功能模块,有效提升了集客业务建设效率、服务质量和管理水平。     

Resource Management for Virtual Private Networks

Virtual private networks (VPNs) have rapidly emerged as a leading solution for multi-site enterprise communication needs. Provider-managed solutions modeled on RFC 2547 serve as a popular choice for layer 3 VPNs, and the hose model has emerged as a common and simple service specification. It offers a hose of a certain contracted bandwidth to customers. With the growth in size and number of VPNs and the uncertainties in the traffic patterns of customers, providers are faced with new challenges in efficient provisioning and capacity planning for these networks and satisfying customer service level agreements (SLA). We suggest that a set of techniques can be used to help the provider build an adaptively provisioned network. These techniques involve continually processing measurement information, building inferences regarding VPN characteristics, and leveraging them for adaptive resource provisioning. We developed scalable techniques to infer VPN characteristics that are important for provisioning tasks. We demonstrated the feasibility of such provisioning techniques with existing measurement obtained using SNMP infrastructure from a large IP/VPN service provider. Our examination of measurement data yielded interesting new insights into VPN structure and properties. Building on our experience with analyzing VPN characteristics, we articulate an adaptive provisioning architecture that enables providers to effectively deal with the dynamic nature of customer traffic     

电信运营商大客户管理系统

电信运营商大客户管理系统是通过收集大客户资料信息、市场调查信息,同时采集营业、计费、客服系统的相关数据,建立完善的大客户信息管理系统;通过建立快速、全面、准确的大客户业务受理及故障申告处理通道,形成完善的大客户服务体系;并以大客户客户资料、业务收入和服务活动为基础,建立完整的大客户满意度评估体系,收益评价与预测体系及营销决策支持系统。简要介绍了大客户管理系统的功能,系统实现的技术特点和系统所需要的运行环境。     

IDC网管中心建设

构建系统管理中心已成为IDC当前的迫切需要之一。本文简述了IDC系统对管理的要求和支持。为实现IDC端到端的服务保障,管理功能包含故障管理、网络节点管理和网络设备的配置管理、性能管理、安全管理、客户服务管理等。     

结合市民热线81890打造广电新型客服体系

建立和完善广电的客服体系将是赢得市场、留住用户的重要环节,论述广电系统构筑新型客服体系的思路,力图结合各种先进的管理平台,构建高效、科学的客服体系,必然有助于打造广电服务利器,增强市场竞争力,构筑广电事业辉煌的明天。     

QoS specification languages for distributed multimedia applications: a survey and taxonomy

Following considerable research into quality-of-service-aware application programming interface design and QoS specification language development for multimedia systems, we present a survey and taxonomy of existing QoS specification languages. As computer and communication technology evolves, distributed multimedia applications are becoming ubiquitous, and quality of service (QoS) is becoming ever more integral to those applications. Because they consume so many resources (such as memory and bandwidth), multimedia applications need resource management at different layers of the communications protocol stack to ensure end-to-end service quality, and to regulate resource contention for equitable resource sharing. However, before an application can invoke any QoS-aware resource management mechanisms and policies - such as admission control, resource reservation, enforcement, and adaptation - it must specify its QoS requirements and the corresponding resource allocations. Furthermore, the application must describe how QoS should be scaled and adapted in cases of resource contention or resource scarcity during runtime. Our goal in this article is to systematically classify and compare the existing QoS specification languages that span several QoS layers with diverse properties. The provided taxonomy and the extensive analysis will give us a detailed look at the existing QoS specification languages along with their properties and relations.     

An econometric model for resource management in competitive wireless data networks

This article investigates the role and importance of the economic aspects that are vital to the success of wireless services deployment and provider selection by users in a competitive environment. We show how some of the econometric measures can meaningfully capture the user decisions/actions (e.g., churning) that can potentially be utilized by the providers in managing radio resources (e.g., bandwidth) in wireless data networks. In particular, by modeling the interaction between a service provider and its customers (or users) as a non-cooperative game, we propose a novel cross-layer resource management framework for integrated admission and rate control in CDMA networks. Analytical and simulation results demonstrate how the proposed framework can help minimize customer churning and maximize revenue for the wireless operators, yet optimizing customer satisfaction by providing differentiated quality of service to different classes of users.     

基于社交网络平台用户行为动力学分析的客户抱怨监控系统研究

如何构建基于社交网络平台舆情挖掘的客户抱怨监控系统,从而实施有效的客户抱怨管理,已经成为网络时代背景下企业客户关系管理面对的重要问题。以国内某电网公司为例,将用户对供电服务的微博抱怨评论作为研究对象,采用文本挖掘技术和行为动力学分析相结合的方法,构建了一个新的客户抱怨监控系统。研究表明,开发一个有效客户抱怨监控系统的关键在于如何从空间和时间两个维度实时监控用户抱怨行为动力学特征,从而具备特定对象监控与服务能力,这将为供电企业主动识别不同地区不同类型客户的抱怨关注点、制定有针对性的客户服务改进方案提供技术保障。     

DBA algorithm for the support of multi-tiered bandwidth guarantee in Ethernet passive optical networks

Access Networks based on Passive Optical Network (PON) technology can offer transport services to broadband service providers, such as mobile backhauling/fronthauling for Mobile Network Operators and multi-ONU Service Level Agreements for Virtual Network Operators. Besides that, Infrastructure Service Provider (InP) also provides broadband access services to end-users, such as residential subscribers and single or multi-site enterprises. In such a scenario, the InPs support diverse customers in the same PON. This paper proposes a bandwidth slicing mechanism to assure bandwidth isolation for different PON customers who rent part of a PON infrastructure from the InP. We introduce a Dynamic Bandwidth Allocation algorithm for Ethernet PONs called MAB-IPACT, which assures bandwidth on different granularity: conventional customers with a single ONU, multi-ONU customers owning a group of ONUs and providing a single type of service, and multi-ONU customers having diverse types of services. The MAB-IPACT algorithm also prioritizes bandwidth distribution among subgroups of ONUs of the same multi-ONU customer. A subgroup of ONUs is a subset of ONUs that belongs to the same multi-ONU customer, which are employed for the same type of service (e.g., ONUs for business service.). Simulation results show that the proposed mechanism improves the network performance of multi-ONU customers with subgroups of ONUs serving different services.

     

A hybrid delivery strategy for a video-on-demand system with customer reneging behavior

A new delivery strategy is proposed for a video-on-demand system to allocate transmission resources according to the popularity of videos. A video is delivered to customers through one of three channels, namely broadcast, multicast and unicast, depending on whether the video is very hot, hot or cold, respectively. An algorithm is developed to select the appropriate delivery channel for the videos so that not only the overall bandwidth of the system is minimized but also a preset quality of service is provided for each customer. An analytical model is also developed to evaluate the bandwidth requirement of the whole system with VCR functionality. The result shows that a significant bandwidth reduction can be achieved when using our proposed delivery strategy.     

基于Web Service的业务管理研究

文章主要就当前流行的Web Service与业务管理的结合提出了新的看法，通过Web Service协议栈与传统网管协议栈的对比，将Web Service协议栈映射到管理应用上，提出了消费者管理和业务提供者管理功能分开，消费者管理作为一种业务提供给消费者的新的思路，最后给出了以FTP业务为例的管理流程。     

省级广电网络全业务客户服务支撑系统建设与应用

全省客户服务平台主要承担客户服务的话务接续工作,通过建设集中平台,配置远程座席,实现了省级广电网络全业务的统一接入、集中部署和分散处理。同时,通过整合现有客服资源,完成了数据、管理和服务的统一。本文从建设背景、建设规划、技术创新点、建设内容及应用情况等方面较为全面地阐述了全省客户服务系统的基本情况,该系统能够提供省级广电网络全产品全业务的客户服务支撑能力。