论文部分内容阅读
随着信息技术的不断发展与成熟以及社会的不断进步,电信用户及收入的发展正逐步呈现出移动通信业务超过固定通信业务、宽带业务超过窄带业务、数据业务超过话音业务的趋势。这使得在电信网中占有重要地位的城域传送网面临着严峻的挑战,挑战主要来自于网络发展和传送业务种类变化。为此,近年来,城域传送网的发展主要是优化网络结构、提高SDH技术传送数据业务的能力以及采用自动交换光网络(ASON)技术,关键在于,使城域传送网能够很好地支持多业务传送,并具有智能。突出表现在引入智能适配层技术(特别是MPLS技术)和ASON控制平
With the constant development and maturity of information technology and the continuous improvement of society, the development of telecommunication subscribers and incomes is gradually showing the tendency that the mobile communication service surpasses the fixed communication service, the broadband service exceeds the narrowband service, and the data service exceeds the voice service. This makes the metro transport network occupying an important position in the telecommunications network facing severe challenges. The challenges mainly come from the network development and changes in the types of the transport services. Therefore, in recent years, the development of metropolitan transport network is mainly to optimize the network structure. The key to improving the ability of SDH technology to transmit data services and using ASON technology lies in that metro transport network can well support Multi-service delivery, and smart. Outstanding performance in the introduction of smart adaptation layer technology (especially MPLS technology) and ASON control plane