下一代网络的关键技术IPQoS  

The Key Technology for Next Generation Network: IP QoS

作　　者：吕涛[1] 冯晓虹[1] 

机构地区：[1]南京邮电学院,江苏省南京市210003

出　　处：《电信快报》2004年第11期24-27,共4页Telecommunications Information

摘　　要：随着Internet的飞速发展,对那些有带宽、时延和时延抖动等特殊要求的应用来说,传统互联网所提供的“尽力而为”服务显然不能满足这些要求。因此,在下一代网络中如何提供服务质量(QoS)支持已成为业界研究的热点。目前,因特网工程任务组(IETF)提出了几种满足QoS的服务模型(包括集成服务(IntServ)模型、差分服务(DiffServ)模型和多协议标记交换(MPLS)等)。文中简要介绍了IP QoS的基本概念,详细介绍了这几种模型的原理及其优缺点,最后进一步讨论了IP QoS的发展趋势。With the rapid development of Internet, the traditional 'best effort services' provided by Internet evidently cannot satisfy application requirements such as bandwidth, delay, delay jitter and so on. Therefore, how to provide QoS in Next Generation Network has become a hot topic of the industry. Now the Internet Engineering Task Force (IETF) has put forth some models, including IntServ, DiffServ and MPLS etc., in order to provide the required QoS. This paper presents the fundamental concepts of IP QoS at first, and then on the basis of this, some primary system frameworks are presented and compared in detail. Finally we discuss the development trend of IP QoS.

关 键 词：下一代网络 IP IETF 差分服务 时延抖动 带宽 MPLS 服务质量(QoS) 服务模型 集成服务 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]