Development of communication control method for optical fiber ring networks

本项目的目标是为高速光纤环网开发有效的接入控制/交换方案。本项目提出了一种新的控制系统--可分解竞争环或简称为Rec-Ring。REC-RING是基于竞争环的一种综合竞争/虚拟令牌传递的接入控制方案，在不增加硬件/软件开销的情况下，引入了环内分组冲突的解决功能。该项目构建了一个专门的计算机模拟器，用于详细分析高速环网，并定量地证明了Rec-Ring在广泛的环网环境中相对于令牌环、时隙环和C-环等其他典型接入控制方案的有效性和有效性。此外，本课题还在高速光环网接入控制技术的基础上，引入多个光环网，通过分组溢出缓存和链路连接，提出了一种新的高速分组交换体系结构。通过计算机仿真和数学分析，证明了该体系结构的有效性，特别是在多媒体数据通信的多虚链路情况下。

The objective of this project is to develop effective access control / switching scheme for high speed optical fiber ring networks. This project has proposed a new control system named Resolvable-Contention Ring or simply ReC-ring. ReC-ring is based on Contention-ring, which is an integrated contention/virtual token-passing access control scheme, and introduces a resolution function of packet collision in the ring without serious hardware/software overhead. The project has constructed a specialized computer simulator for analyzing high-speed ring networks in detail and shown the effectiveness and validity of ReC-ring over other representative access control schemes, like Token-ring, Slotted-ring, and C-ring in wide range of ring network environment, quantitatively. Further, on the base of access control technology for high-speed optical ring networks, this project also has presented a new high-speed packet switching architecture by introducing multiple optical ring networks which are connected by packet overflow buffer and link. The project has shown the validity of this new architecture especially for multiple virtual links situation of multimedia data communications by both computer simulation and mathematical analysis.