Distributed Control Protocol for Various Traffic on a Next Generation Optical Network

近年来，随着高速接入网的普及，对高速、大容量骨干网的需求不断增加。现有的基于TCP的光网络不适合流媒体等大容量数据的传输，因此，有必要探索一种新的体系结构，能够稳定地传输文件传输和流媒体等大容量数据。本文研究了光网络的波长分配方案，提出了一种基于GMPLS和高速光交换的新的网络体系结构。一种新的波长分配方案考虑了波长转换的有限范围和到目的地的跳数。它的目标是特别经济的光网络。仿真结果表明，该方案可以以较小的波长转换频率将数据传输到远端节点。其次，提出了一种波长分配方法，通过时隙预分配可以有效地处理多播业务，通过波长检测可以有效地处理单播业务。我们提出并实现了一种新的光网络结构--光时隙交换，它由高速光交换机和GMPLS组成。在OSS中，一个用户在固定的时间段内占用整个带宽进行高速传输，通过上述研究，建立了下一代光网络中能够灵活应对突发性业务的体系结构和控制协议。

The demand for high-speed and large capacity backbone network has risen by the spread of the high-speed access network in recent years. A present optical network based on TCP is unsuitable to the transmission of the bulk data of the streaming etc.Therefore, it is necessary to grope for a new architecture that can stably transmit a bulk data of the file transfer and the streaming, etc.In this research, we study the wavelength assignment scheme for optical network, and also propose new network architecture with GMPLS and a high-speed optical switch.First study, a new wavelength assignment scheme takes the limited range of wavelength conversion and the number of hops to the destination into consideration. It aims at especially economical optical network. Simulation results show that our proposal can transmit data to a distant node with a little wavelength conversion frequency.Second, we propose that the wavelength allocation method that can efficiently deal with multicast traffic by the slot pre-allocation, and can also accommodate unicast traffic by the wavelength detection.Third, we propose and implement new optical network architecture Optical Slot Switching that consists of a high-speed optical switch and GMPLS. In OSS, one user occupies the whole band during the fixed time period for a high speed transmission.Through the above mentioned researches, the architecture and the control protocol that can flexibly correspond to more bursty traffic on the next generation optical network were established.