LR-PON中混合调度自适应多线程轮询算法  

Hybrid-scheduling adaptive multi-thread polling algorithm for long reach passive optical networks

作　　者：李娜[1] 何荣希[1] 

机构地区：[1]大连海事大学信息科学技术学院,辽宁大连116026

出　　处：《光通信技术》2016年第11期9-12,共4页Optical Communication Technology

基　　金：国家自然科学基金项目(61371091)资助;大连海事大学"十三五"重点科研项目(3132016318)资助

摘　　要：针对长距离无源光网络(LR-PON)覆盖范围广、环路时延大的特点,提出一种混合调度的自适应多线程轮询算法(HS-AMTP)。该算法中OLT采用在线授权调度和离线授权调度相结合的混合调度方式,并根据ONU的带宽请求动态调整轮询周期内对ONU的授权次数。仿真结果表明:HS-AMTP算法能有效提高上行带宽利用率和平均包时延性能。A hybrid-scheduling adaptive multi-thread polling algorithm （HS-AMTP） has been proposed for long reach passive optical networks （LR-PON） with considerable round trip time and wide coverage. In HS-AMTP, OLT works on a hybrid grant scheduling scheme with an integrated consideration of online scheduling scheme and offline scheduling scheme. Besides, HS-AMTP can adjust the number of polling dy- namically according to the bandwidth requirements from ONUs. Simulation results show that the proposed al- gorithm can achieve higher upstream channel utilization and lower average packet delay compared with the existing algorithms.

关 键 词：长距离无源光网络 动态带宽分配 授权调度 自适应 多线程轮询 

分 类 号：TN929.18[电子电信—通信与信息系统]