Dynamic Fuzzy Controlled RWA Algorithm for IP/GMPLS over WDM Networks

作     者：I-Shyan Hwang I-Feng Huang Shin-Cheng Yu 

作者机构：Department of Computer Science and Engineering Yuan-Ze University Chung-Li 32026 Department of Information Management Kang-Ning Junior College Taipei 11422 

出 版 物：《Journal of Computer Science & Technology》 (计算机科学技术学报（英文版）)

年 卷 期：2005年第20卷第5期

页      面：717-727页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the(NSC-92-2218-E-155-004and NSC-93-2917-I-155-001) 

主　　题：WDM (wavelength-division multiplexing) IP/GMPLS RWA (routing and wavelength assignment) fuzzy control 

摘      要：This paper proposes a dynamic RWA scheme using fuzzy logic control on IP/GMPLS over WDM networks to achieve the best quality of network transmission. The proposed algorithm dynamically allocates network resources and reserves partial bandwidth based on the current network status, which includes the request bandwidth, average utilization for each wavelength and its coefficient of variance （C.V.） of data traffic, to determine whether the connection can be set tip. Five fuzzy sets for request bandwidth, average rate and C.V. of data traffic are used to divide the variable space： very large （LP）, large （SP）, normal （ZE）, small （SN）, and very small （LN）. Setting the fuzzy limit is a key part in the proposed algorithm. The simulation of scenarios in this paper has two steps. In the first step, the adaptive fuzzy limits are evaluated based on average transmission cost pertaining to ten network statuses. The second step is to compare the proposed algorithm with periodic measurement of traffic （PMT） in ATM networks in six network situations to show that the proposed FC-RWA algorithm can provide better network transmission.