多业务EPON动态带宽分配算法  

Multi-Services Bandwidth Assignment Algorithm in EPON

作　　者：张洋[1] 陈雪[1] 黄翔[1] 邓羽[2] 

机构地区：[1]北京邮电大学电信工程学院,北京100876 [2]北京格林威尔科技发展有限公司,北京100085

出　　处：《北京邮电大学学报》2004年第5期90-93,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家"863计划"项目(2001AA122021)

摘　　要：提出一种适用于多业务以太网无源光网络(EPON)的上行带宽分配算法——周期和准周期结合的动态带宽分配算法.算法针对以太网业务和话音业务(TDM)的特性,分别采取准周期同步轮询动态带宽分配和周期固定带宽分配机制.仿真结果表明:该算法不仅满足话音业务严格的实时性要求和以太网业务的时延、丢包率等各项指标要求,且系统带宽利用率高、带宽分配公平性好.A novel bandwidth dynamic assignment algorithm for EPON (Ethernet passive optical network) upstream link is proposed, named integrated periodic and quasi-periodic granting DBA (IPAQG DBA). The algorithm adopts quasi-periodic synchronization polling DBA (dynamic bandwidth assignment) and periodic static configuration mechanism respectively for ethernet and TDM (time division multiplex) service. The simulation results show that not only the rigid QoS (quality of service) of TDM service and the performance requirements of ethernet service can be satisfied, but also very high bandwidth utilization and good fairness can be realized by IPAQG DBA at the same time.

关 键 词：以太网无源光网络 动态带宽分配 话音业务 服务质量 

分 类 号：TN915.6[电子电信—通信与信息系统]