基于云模型的被动队列管理算法  

Passive queue management algorithm based on cloud model

作　　者：陈志军[1] 

机构地区：[1]义乌工商职业技术学院机电信息分院,浙江义乌322000

出　　处：《计算机应用》2014年第4期955-957,962,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61103051);浙江省社会科学界联合会研究课题(2012N108)

摘　　要：为了解决因拥塞而带来的网络性能问题,基于"弃头"方式提出了一种新的被动队列管理算法DFCM。该算法首先结合业务流队长和到达速率给出了丢包策略和丢包概率,同时利用云模型对实际队长进行求解;最后,通过利用NS2和Matlab进行仿真实验,深入分析了影响算法性能的关键因素。与"弃尾"(Drop Tail)和DFSQ算法相比,DFCM在瞬时队长方差、有效传输数据包等方面显示了较好的适应性。In order to mitigate the network performance reduction by congestion problem,a new Passive Queue Management （PQM） algorithm named Drop Front n based on Cloud Model （DFCM） was proposed with drop front.At first,the drop packet strategy and drop packet probability were presented by considering network queue length and arrival rate in this algorithm,and the actual queue length was computed with cloud model.Finally,a simulation with NS2 and Matlab was conducted to study the key influencing factors of this algorithm.The results show that,compared with Drop Tail and DFSQ （Drop Front n based on Synchronized Queue） algorithms,DFCM has better suitability in instantaneous queue length variance and effective packet transmission.

关 键 词：被动队列管理 弃头 丢包 队长 云模型 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]