【摘要】 网络技术的迅猛发展导致网络的异构性问题越来越突出,而各层次用户都要求新网络能够提供更加开放和稳定、高性能、可重用、可灵活定制的服务,这是原来相对封闭的专用服务平台和业务环境所无法提供的。基于各种考虑,下一代网络采用开放的网络架构体系,由业务驱动基于统一协议的分组网络。文中通过研究网络体系结构的演进,得出下一代网络体系结构应具有的特点及发展趋势,并对实现时所要求的关键技术进行了探讨。更多还原

【Abstract】 With the rapid development of network technology, the problem of heterogeneous network is becoming more and more serious. All levels of consumer hope that the next generation network(NGN) can offer more open, stable, high performance and reusable services which can be flexibly customized. Based on these considerations, the next generation network will adopt an open network frame structure, which is a service driven packet network based on uniform protocols. Based on a study of network architecture development, this paper deduced what would be the characteristics and development trend of next generation network. Furthermore, the author also probes into the key technologies for realizing this structure.更多还原