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。     

智能网业务的网间互通

智能网业务的网间互通张捷１网间互通的前提条件智能网是一种可迅速、经济、灵活地提供新业务的网络体系,在智能网上开放补充业务,不仅对业务、用户数据便于管理及业务逻辑的控制比较集中,而且还可使用户在较大范围内使用业务,用户可在任何通过Ｎｏ．７信令网与用于开...     

网间互连互通技术研究

就目前某通信系统内的公用电话通信网、移动通信网和专用通信网等网络间互通总体技术进行研究。多种通信网并存的局面使得网络互通问题变得重要。     

智能网业务的网间互通

文章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的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。     

网间互连互通技术问题分析

网间互连互通的问题为政府和运营商密切关注.网间互连互通涉及的面很广,有技术问题、管理问题、策略问题以及竞争中出现的问题.文章主要对网间互连互通中的主要技术问题,如网间主叫号码传送、移动网和固定网短信的互通、通信质量要求以及控制方式等进行讨论.     

网间互连互通的星形方案

针对目前中国电信运营商网络间互连互通的组网格局及由此带来的“连而不通,通而不畅”等难以解决的结构性问题,提出全新的星形网间组网方案,探讨星形方案的优缺点并提出组网、建设、管理等方面的建议。     

国外运营网间互连互通介绍

一、方针政策 1.互连谈判 在举行互连互通(以下简称互连)谈判之前,政府必须严格限定新运营者的经营方向以及是否与原垄断者进行竞争,或只是提供补充性的市话、长话、国际话务服务。 如果经营方向是竞争,那么,必须由一个权威的、独立的管理机构来决定互连谈判的框架。这个框架应该包括以下内     

智能网CS—2网间互通能力

本文首先简单地介绍网间互通能力在中国的应用前景，然后阐述了网间互通能力的需求和各种可能的网间互通方案。最后，本文介绍了网间互通功能在北京邮电大学智能网产品中的实现方案。     

电信运营商互通网间结算的设想

经过多年发展,我国电信基础设施在硬件方面已达到了很高水平.目前,国内已经存在7个电信运营商.而根据WTO<基础电信协议>,世贸组织成员国必须在2006年之前开放本国的电信市场.根据中国对WTO的承诺,国外的电信公司进入中国市场,可以通过设立电信经营机构、提供跨境服务、投资入股等方式参与电信运营,国内电信市场必将呈现多元化的市场竞争格局.     

医疗信息系统网间安全解决方案

随着近年来全国各大医院信息化工作的迅速发展,大多数医院基本完成了以医院信息系统（HIS）为中心,以检验科信息系统（LIS）、影像归档和通信系统（PACS）,以及电子病历系统等为支撑的核心业务系统建设,医院医疗工作全面进入信息化时代。     

中国联通对网间互联的展望

过去的六年，经过政企分离、电信重组、加强管制、建立运营公司的互联互通的工作机构，出台一系列的法规，促进了观念转变，使电信运营公司间的互联互通工作有了突破性进展。张春江副部长指出，电信网间的互联互通不仅是电信市场改革和开放的重要条件，更是一种首要条件，它已成为衡量我国电信改革成功与否的关键。在电信市场改革和开放过程中要解决的主要矛盾之一就是解决好互联互通问题。中国联通经过了几年的发展，互联互通有了显著的改善，中国联通移动通信的GSM和CDMA两个网分别与中国电信和中国移动的325个本地网实现了互联。中国…     

Voice service interworking for PSTN and IP networks

This article presents an overview of the main technical problems to be addressed for the provision of interoperable services between IP telephony and the PSTN. The pivotal element of the solution resides in an interworking function. This function is typically implemented in a gateway whose requirements and behavior are here analyzed in terms of signaling and control protocols (control plane) as well as user data transfer (user plane). The presentation is structured around these two planes. The control plane defines the set of signaling protocols to be used in each networking context and the translation between them. Detailed scenarios illustrate the signal translation in the gateway allowing for the establishment of a hybrid phone call. The user plane is responsible for adapting the user data to the properties of each network channel and determines the quality of service of the voice call in terms of delay and speech quality     

香港互联互通新政策要点

2001年9月11日，香港电讯管理局在电讯盈科的请求下发布了咨询文件，对原有的互联互通及相关竞争政策进行了探讨，以适应竞争环境变化的要求。2002年3月18日，电讯管理局发布修订后的“电讯局长声明”，就固定网络运营商之间的关系、网络互连的配置架构及基本原则、互连网络之间的通信交换、网络运营商之间的收费原则，以及互联点等相关原则进行了阐述。本文就声明中的部分内容作简要介绍。固网运营商之间的关系香港电讯管理局向固定电信网络的经营者发放固定电讯网络服务（FTNS）牌照，FTNS牌照要求持牌商：（在香港的固定点之间或在香…     

Networking of networks: interworking according to OSI

The formal method of interworking networks in accordance with the overall open systems interconnection (OSI) effort being pursued by both the International Organization for Standardization (ISO) and the International Telegraph and Telephone Consultative Committee (CCITT) is described. The problem is introduced, the applicable OSI concepts are defined, and the basic architectural model for interworking and the resulting requirements on protocols, relaying, addressing, and routing are discussed. The problem of interworking from the perspective of the bottom four layers of the reference model (RM)-OSI is approached in a heuristic and informal fashion. The necessary background material is presented using a rigorous set of tools is developed by the work on the RM-OSI. The concepts of interworking are further developed. Conclusions and observations concerning ongoing work are presented     

Implementation solutions for the interworking between MMS and streaming

Multimedia messaging service (MMS) and streaming are forerunner multimedia applications in mobile communication. Use of streaming in the retrieval of continuous multimedia content of MMS is the identified optimum scope (extent) of interworking between MMS and streaming. The optimum interworking can remove a limitation visible in MMS—retrieving content requiring more storage space than available in a mobile terminal. This paper presents two different solutions for implementing the interworking. The implementation solutions are consistent with the existing mobile frameworks and the working principles and procedures of both MMS and streaming. Consistency is very important here not only to avoid creating isolated solution, but also to preserve user experience. This paper describes in detail how each of the solutions operates, including the process of using streaming in the MMS retrieval. Pros and cons of both the solutions are also analysed to compare those. Other important factors tackled in the analysis are implementation flexibility, complexity, terminal capability indication, and content adaptation. Copyright © 2003 John Wiley & Sons, Ltd.     

3G-WLAN融合网络中一种新的双模终端设计

设计了一种能够在3G与WLAN融合网络中智能切换的双模终端模型.为了实现两种网络之间的无缝切换,提出了网络接口选择算法.该算法通过提前注册和认证机制减少了垂直切换时延,并采用提前切换的方法减少了垂直切换时数据包丢失.仿真结果验证了设计和算法具有良好性能.     

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.     

A novel congestion control model for interworking AAA in heterogeneous networks

In the 3rd generation partnership project (3GPP) and wireless local area network (WLAN) interworking networks, 3GPP authentication, authorization, accounting (AAA) server located in 3GPP core network will be responsible for the AAA request from WLAN access network (AN). However, centralized AAA deployment is bound to give rise to the single point failure, resulting in system congestion. In order to solve this problem, this paper presents a novel congestion control model for AAA. In addition, through analyzing the model, the conclusion can be drawn that the average congestion rate of extensible authentication protocol (EAP) user request is related with factors, such as the arrival rate of EAP request, the number of EAP re-authentication, and the system buffer queue length. Finally, the simulation results show that EAP request arrival rate is directly proportional to the congestion rate, and when the number of EAP re-authentication and system buffer queue length are fixed, the number of corresponding user authentication vectors should be directly proportional to the EAP request arrival rate, so as to ensure the average congestion rate of EAP request is less than 0.005.