Optimization and simulation of improved NTP protocol in asynchronous communication network

Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (6): 75-77.

• 网络、通信、安全 • Previous Articles Next Articles

Optimization and simulation of improved NTP protocol in asynchronous communication network

LIU Lei^1，2，ZHANG Lei³

1.Postgraduate Team 3，ICE，PLAUST，Nanjing 210007，China
2.Unit 72946 of PLA，China
3.Department of Telecommunication Engineering，ICE，PLAUST，Nanjing 210007，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-02-21 Published:2011-02-21

非同步通信中改进型NTP协议优化与仿真

刘磊^1，2，张磊³

1.解放军理工大学通信工程学院研究生3队，南京 210007
2.中国人民解放军72946部队
3.解放军理工大学通信工程学院电信工程系，南京 210007

Abstract

Abstract: In asynchronous and point to point communication network，improved NTP protocol can help us to calculate time difference of both sides.But improved NTP protocol don’t distinguish natural delay and delay distortion，if the number of packets which both sides of communication equipment have sent is very difference，the instance will grave influence the result of time difference.A optimization design is studied which uses a believable bound for filtering delay distortion packets.In order to test its practicability，a communication model is constructed，then optimization impact is simulated and analyzed.the optimization design can improve the precision of time difference．

Key words: asynchronous, point to point, Network Time Protocol, believable bound, simulation

摘要： 在非同步点对点的通信网络中，改进型NTP协议可以帮助我们计算通信双方的同步时差。但是改进型NTP协议并不对正常时延和时延突变进行区分，如果出现通信单向数据包较多且时延突变不平衡的情况，则会严重影响同步时差的计算结果。对一种通过可信域过滤时延突变的优化设计方法进行了研究。通过构造网络通信模型，对增加优化前后进行仿真和分析，发现增加优化设计确实能够起到提高同步时差精确计算的作用。

关键词: 非同步, 点对点, 网络时间协议（NTP）, 可信域, 仿真

LIU Lei^1，2，ZHANG Lei³.

Optimization and simulation of improved NTP protocol in asynchronous communication network

[J]. Computer Engineering and Applications, 2011, 47(6): 75-77.

刘磊^1，2，张磊³. 非同步通信中改进型NTP协议优化与仿真[J]. 计算机工程与应用, 2011, 47(6): 75-77.

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Optimization and simulation of improved NTP protocol in asynchronous communication network

非同步通信中改进型NTP协议优化与仿真

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