Design and Performance Analysis of a High-Performance Medium Access Control Scheme for an Optical WDM Passive Star Coupler Network

• Main Authors: Shien-Teng Chang, 張憲騰
• Other Authors: I-Fen Chao
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/93114737147468357906

碩士 === 元智大學 === 電機工程學系 === 101 === In the thesis, it is important that the proposed scheme is able to achieve good balance between fairness and throughput by different scalable node architectures. In addition, the system cost is also an important issue that has to be addressed when designing the media access control (MAC). In order to find the low cost of system hardware, each node has flexible node architecture that is equipped with high-cost TT-TR or low-cost TT-FR resulting in an increase in bandwidth efficiency. In essence, the system architecture is governed by a MAC scheme. The proposed scheme embodies a highly efficient and fair bandwidth allocation in accordance with frame based data scheduling. Because the frame based is reduced the impact of the collisions and used a preferentially rotate transmission method for regulating a fair use of bandwidth. Besides, the control information is not transmitted through an additional channel that is achieved the effect of saving bandwidth. Our simulation results show that different node architectures with the proposed method achieve exceptional performance under a wide range of traffic loads and burstiness. In addition, under server-client traffic pattern, the mean delay of TT-FR system drops. Fortunately, only changing the server node (which receives large amount of traffic) to TT-TR greatly improves the overall mean delay, resulting in significantly reducing the system cost.