基于链路循环的网络时延模拟方法研究  

Research on Network Delay Simulation Method Based on Link Cycle

作　　者：高良磊 曹炳尧[1] 张倩武[1] Gao Lianglei

机构地区：[1]上海大学特种光纤与光接入网重点实验室,上海200444

出　　处：《工业控制计算机》2023年第11期42-44,84,共4页Industrial Control Computer

摘　　要：针对当前网络时延模拟软件量程窄、精度低、资源占用高的问题,提出一种基于链路循环的网络时延模拟方法。该方法将时延模拟分为两个阶段:第一阶段通过链路循环实现宽量程的时延模拟,第二阶段通过内存队列缓冲数据实现精度优化。实验结果表明,该方法能够以微秒级精度实现秒级时延模拟。此外,相较于主流时延模拟软件NetEm,该方法能在各个带宽下降低55%~80%的内存占用,在满足精度需求的同时极大地降低系统成本。Aiming at the problems of narrow range,low accuracy and high resource occupation of the current network delay simulation software,a network delay simulation method based on cyclic link is proposed.This method divides the delay simulation into two stages:the first stage simulates the delay of wide range through link cycling,and the second stage realizes the accuracy optimization by buffering the data through memory queue.Experimental results show that this delay simulation method can achieve second-level delay simulation with microsecond accuracy.In addition,compared with the mainstream delay simulation software NetEm,it can reduce the memory occupation by 55%~80%in various bandwidth scenarios,which can meet the accuracy requirements and greatly reduce the system cost.

关 键 词：网络时延模拟 光延迟 链路循环 内存缓冲 

分 类 号：TN929.1[电子电信—通信与信息系统]