长距离无源光网络中自适应多线程轮询算法  

Adaptive multi-thread polling algorithm for long distance passive optical networks

作　　者：张清玲[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6期21-24,共4页Optical Communication Technology

基　　金：国家自然科学基金资助项目(61371091)资助

摘　　要：针对长距离无源光网络覆盖范围广、传播时延大的特点,提出一种基于上行数据包时延的自适应多线程轮询算法(AMTP)。该算法中OLT依据上行数据包时延状况动态调整轮询周期内对ONU的带宽授权次数。仿真结果表明:与已有算法相比,AMTP算法具有较高的信道利用率、较低的上行数据包平均时延和时延抖动值。In this paper, a packet delay based adaptive multi-thread polling algorithm （AMTP） has been pro- posed for a long reach passive optical network （LR-PON）which has large coverage and considerable propaga- tion delay.AMTP can adjust the number of polling thread dynamically according to the average delay of the re- ceived packets. Simulation results show that the proposed algorithm can achieve higher channel utilization and lower packet delay, as well as decreased packet delay jitter compared with the existing algorithms.

关 键 词：长距离无源光网络 动态带宽分配 自适应 多线程轮询 

分 类 号：TN929.18[电子电信—通信与信息系统]