Dynamic Bandwidth Allocation Mechanisms for Multimedia Services on EPON

• Main Authors: Rui-Yi Chien, 簡睿毅
• Other Authors: 吳和庭
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/ypqm5c

碩士 === 國立臺北科技大學 === 資訊工程系所 === 93 === Ethernet Passive Optical Network(EPON)，which combine the advantage of Ethernet and Passive Optical Network，offers many excellent properties such as high stability，sufficient security，ease of deployment。Therefore，EPON has become the IEEE standard ，and is poised to become one of the best candidates for next generation broadband access network。 In this thesis，we propose dynamic bandwidth allocation mechanism in the upstream direction of EPON system。The proposed mechanism aim to provide satisfied Quality of Service support for a variety of multimedia traffic sources。 The amount of allocated bandwidth in such mechanisms mainly depends upon the following factors：the reported queue length，the credit value representing the predicted bandwidth requirement occurring between the reporting time and the actual transmission time，the access priority of each individual traffic。It is shown through simulation that the proposed mechanism can effectively reduce the average packet waiting time。Besides，the mechanism can guarantee that packets with higher priority always enjoys better performance results。