一种网络编码的多播路由算法
- 格式:pdf
- 大小:630.45 KB
- 文档页数:5


一种基于干扰感知的网络编码意识路由
摘要:针对编码机会对数据流传输相对集中的要求,而数据流集中可能会造成传输干扰增大的问题,提出一种新的考虑干扰感知的编码意识路由判据ecxwi,结合一定的路由发现、路由维护机制,形成一种新的编码意识路由算法carwi,该算法综合考虑了编码机会以及无线传输干扰等因素。仿真证明,并与采用最短路径路由的网络编码机会路由传输机制cope相比,carwi在网络吞吐量、端到端时延指标上有更优的表现。
关键词:无线ad hoc网络;网络编码;编码意识;干扰;
中图分类号:tp393 文献标识码:a 文章编号:1009-3044(2013)04-0726-05
network coding-aware routing based on the
interference-aware
tao yang, zhao jun-nan,
(chongqing university of posts and telecommunications,
chongqing 400065, china)
abstract: for the transmission of data stream required by
network coding is relatively concentrated, there may cause
the increasing interferences,a new routing metric ecxwi is
proposed in this paper. combined with the route discovery and
the route maintenance mechanism, a new coding-aware routing
algorithm carwi is also proposed. simulation shows that compared with network coding opportunities routing
・ l2 ・ Computer Era No.1 201 1
改进算子的遗传算法在QoS多播路由优化上的应用
胡永刚,谷媛
(华北电力大学研究生院,河北保定071000)
摘要:针对QoS多播路由问题提出了一种改进遗传算子的遗传算法,通过设计多样性维持机制的选择算子、与代数相
关的交叉算子和与个体适应度相关的变异算子,有效地解决了传统遗传算法应用于多播路由优化时的旱熟收敛问题。
实验结果显示,在随机网络中,该算法所获得的解与最优解的相对误差不超过1.0%,算法的收敛速度和寻优能力明显优
于传统遗传算法。
关键词:QoS;多播路由;遗传算法;遗传算子
Application of Genetic Algorithm with Improved Operators
in Q0S Muiticast Routing Optimization
HU Yong—gang,GU Yuan
(Graduate College,North China Electric Power University,Baoding,Hebei 071000,China)
Abstract:For QoS multicast routing problem,a genetic algorithm based on improved genetic operators is designed.By designing the selection operator with diversity maintaining mechanism,the crossover operator related to the number of generations and the mutation operator depending on fitness value,the algorithm has effectively solved the premature convergence problem in multicast
第36卷
VoL36 第5期
No。s 计算机工程
Computer Engineering 2010年3月
March 2010
・网络与通信・ 文章编号:1000-_.3428(2010)05—0l06___03 文献标识码:A 中圈分类号t TP301.6
DNA遗传算法的QoS多播路由优化
唐天兵 ,申文杰 ,韦凌云
(1.广西大学计算机与电子信息学院,南宁530004;2.北京邮电大学自动化学院,北京100876)
■要:针对网络中的QoS多播路由问题,提出一种基于DNA的混合遗传算法,以遗传算法为框架,采用DNA编码方式,对交叉算子
和变异算子进行改进,同时把小生境技术和模拟退火融入框架中,使小生境中的个体独立进行模拟退火操作,达到维护种群多样性和增强
局部搜索能力的目的。实验结果验证了该算法的有效性。
关黼:多播路由;遗传算法;DNA计算;小生境;模拟退火
QoS Multicast Routing Optimization for DNA Genetic Algorithm
TANG Tian—bing ,SHEN Wen-jie ,WEI Ling—yun
(1.School of Computer,Electronics and Information,Guangxi University,Nanning 530004;
2.School ofAutomation,Beijing University ofPosts and Telecommunications,Beijing 100876)
[Abstraetl A hybrid Genetic Algorithm(GA)based on DNA is proposed for the optimization of multicast routing with Quality of Service(QoS)
constraint.Based on the framework of GA with DNA coding and improved crossover and mutation operators,the proposed algorithm is also combined with improved simulated annealing and niche operation to make the individuals of a niche enforce simulated annealing operation independently and to keep the diversity of population,and further to improve search capability of the algorithm and convergence rate.Experimental
144 2007,43(27) Computer Engineering and Applications计算机工程与应用
基于量子遗传算法的QoS多播路由算法
董武世,柯宗武,陈年生
DONG Wu-shi,KE Zong-wu,CHEN Nian-sheng
湖北师范学院计算机科学系,湖北黄石435002
Department of Computer Science,Hubei Nodal University,Huangshi,Hubei 435002,China
E—mail:hschenns@163.con
DONG Wu-shi,KE Zong-wu,CHEN Nian-sheng.QoS multicast routing algorithm based on QGA.Computer Engineering
and Appfications,2OO7,43(27):144—147.
Abstract:The key problem of QoS multicast routing optimization algorithm is to build QoS constrained muhicast tree.This is the
most noted problem in computer networks as constrained minimum Steiner tree problem,which has also been shown as NP—con—
plete.Quantum genetic algorithm is a new genetic algorithm based on quantum theory.A multicast routing optimization algorithm
with QoS constraints based on Quantum Genetic Algorithm(QoSMR-QGA)is proposed in this paper,and the process of routing