SUPANET中的物理帧时槽交换技术

Physical Frame Timeslot Switching in SUPANET

文中从分析未来"三网合一"的需求和现有基于DWDM交换技术存在的问题出发,提出了用以太网的介质访问控制(MAC)子层的帧格式作为物理帧格式,以最大长度的MAC帧传输时间作为基本时槽的"物理帧时槽交换(PFTS)技术",并以此作为实现下一代单物理层用户传输平面体系结构(SUPA)的基础。文中提供了实现PFTS的技术框架,详细地讨论了PFTS交换原理和服务质量保障机制,简要地分析PFTS相对于已有的物理层交换技术的优越性。

Striving for the Single User Plane Architecture (SUPA) for the next generation Internet, this paper introduces a novel technique called the Physical Frame Timeslot Switching (PFTS). With PFTS, Ethernet-like MAC frame has been adopted as the format of the physical frame, and the time of transmitting a MAC frame with the maximum length is defined as the 'timeslot' in transmission and switching of the physical frames in a PFTS domain. A framework concerning the PFTS is presented in this paper, and basic switching tactics and mechanisms in guaranteeing the required QoS of different applications in PFTS are also discussed in some detail.