In the past decades, many cleanslate future network architectures have gained limited deployment in current Internet, due to the stability and rigidity of TCP/IP, the narrow waist of the Internet. We first propose thr...In the past decades, many cleanslate future network architectures have gained limited deployment in current Internet, due to the stability and rigidity of TCP/IP, the narrow waist of the Internet. We first propose three principles that the future Internet architecture should obey to be well-defined network architecture, i.e. supporting service innovation and enabling evolvability. By abstracting different modes from TCP/IP network and SDN technology, we argue that the centric-distributed-centric(CDC) mode has great potential for the well-defined future network architecture in which diverse network architectures could be incrementally deployed and coexist with each other. Prototype system regulated by CDC mode was developed. Experimental results reveal that CDC can support diverse architectures to coexist in the current Internet and thus enables the Internet to evolve.展开更多
广电传统播出系统基于SDI信号播出传输,主要依赖于传统切换开关的静信号切换方式,系统安全、成熟且稳定。但是融合媒体发展方向要求系统向平台化、互联网协议(Internet Protocol,IP)化发展,将媒体融合、云计算、大数据分析等技术融入广...广电传统播出系统基于SDI信号播出传输,主要依赖于传统切换开关的静信号切换方式,系统安全、成熟且稳定。但是融合媒体发展方向要求系统向平台化、互联网协议(Internet Protocol,IP)化发展,将媒体融合、云计算、大数据分析等技术融入广电领域。目前,4K、8K超高清信号对带宽的要求非常高,传统的基于数字分量串行接口(Serial Digital Interface,SDI)播出的方式已经不能满足技术更新的需求。因此,需采用基于信息与通信技术(Information and Communications Technology,ICT)技术的IP化架构,可以解决高带宽信号的传输和调度。基于IP的组网方式主要依靠软件定义网络(Software Defined Network,SDN)交换机架构实现IP流的静切换。这种架构将改变传统广播电视SDI信号传输的局限,是未来实现三网融合的技术基础。展开更多
基金supported in part by the National Natural Science Foundation of China under Grant No.61402521Jiangsu Province Natural Science Foundation of China under Grant No.BK20140068the China Post Doctoral Science Foundation under Grant No.2017M610286
文摘In the past decades, many cleanslate future network architectures have gained limited deployment in current Internet, due to the stability and rigidity of TCP/IP, the narrow waist of the Internet. We first propose three principles that the future Internet architecture should obey to be well-defined network architecture, i.e. supporting service innovation and enabling evolvability. By abstracting different modes from TCP/IP network and SDN technology, we argue that the centric-distributed-centric(CDC) mode has great potential for the well-defined future network architecture in which diverse network architectures could be incrementally deployed and coexist with each other. Prototype system regulated by CDC mode was developed. Experimental results reveal that CDC can support diverse architectures to coexist in the current Internet and thus enables the Internet to evolve.
文摘广电传统播出系统基于SDI信号播出传输,主要依赖于传统切换开关的静信号切换方式,系统安全、成熟且稳定。但是融合媒体发展方向要求系统向平台化、互联网协议(Internet Protocol,IP)化发展,将媒体融合、云计算、大数据分析等技术融入广电领域。目前,4K、8K超高清信号对带宽的要求非常高,传统的基于数字分量串行接口(Serial Digital Interface,SDI)播出的方式已经不能满足技术更新的需求。因此,需采用基于信息与通信技术(Information and Communications Technology,ICT)技术的IP化架构,可以解决高带宽信号的传输和调度。基于IP的组网方式主要依靠软件定义网络(Software Defined Network,SDN)交换机架构实现IP流的静切换。这种架构将改变传统广播电视SDI信号传输的局限,是未来实现三网融合的技术基础。
