摘要
光接入网方兴未艾,作为现阶段我国采用的主要光接入技术手段——基于以太网的无源光网络(EPON)正处于大规模商用阶段。在多用户和多业务的环境中,系统的带宽有效管理技术变得至关重要。目前EPON中所使用的动态带宽分配基本上都是基于请求-授权的分配方式,如何评测某种动态带宽分配(DBA)算法的效率成为测试领域的新课题。一个完整的测试方案需包括:测试参考点的选取,测试参考模型的搭建,测试步骤的确立以及结果分析等。
The deployment of optical access network is booming. As one of the mainstream optical access technologies applied in China, Ethernet Passive Optical Network （EPON） is in large-scale commercial application. In the muhiuser and multi-service environment, the effective management of the system bandwidth has become critical. The dynamic bandwidth allocation （DBA） in EPON system is currently based on the request/ grant mechanism. So it is a new topic how to evaluate the efficiency of one DBA ＇algorithm in the test field. A complete test scheme should include： selection of reference testing points, infrastructure of the network testing model, framework of testing steps, anticipated result analysis and confirmation, and so on.
出处
《现代电信科技》
2009年第11期8-13,共6页
Modern Science & Technology of Telecommunications
关键词
光线路终端
光网络单元
DBA算法
QOS
Optical Line Terminal, Optical Network Unit, Dynamic Bandwidth Allocation, Quality of Service
