A STUDY ON PROBE-BASED MULTICAST ADMISSION CONTROL AND ENHANCEMENT  

作　　者：Le Chunhui He Jianhua Yang Zongkai Liu Wei 

机构地区：[1]Dept of Electronics and Info. Eng., Huazhong University. of Sci.and Tech., Wuhan 430074, China

出　　处：《Journal of Electronics(China)》2006年第1期69-75,共7页电子科学学刊（英文版）

摘　　要：To provide scalable and simple Quality of Service（QoS） mechanism for multicast services, Probe-Based Multicast Admission Control （PBMAC） scheme was proposed. In this paper, PBMAC is studicd and a so-called subsequent request problem is found in PBMAC, which degrades system performance significantly when the network traffic is heavily loaded. Based on the analysis on subsequent request problem, an Enhance PBMAC （EPBMAC） scheme is proposed, in which complementary probing is devised to solve the problem. Using a new metric of normalized requested equivalent link capacity, the pertbrmance of PBMAC and EPBMAC is analyzed and evaluated. Two implementations are proposed for incremental dcployment. The paper finally introduces evaluation with packet-based simulations. Both analytical and simulation results show the significant improvement in performance.To provide scalable and simple Quality of Service(QoS) mechanism for multicast services, Probe-Based Multicast Admission Control (PBMAC) scheme was proposed. In this paper, PBMAC is studied and a so-called subsequent request problem is found in PBMAC, which degrades system performance significantly when the network traffic is heavily loaded. Based on the analysis on subsequent request problem, an Enhance PBMAC (EPBMAC) scheme is proposed, in which complementary probing is devised to solve the problem. Using a new metric of normalized requested equivalent link capacity, the performance of PBMAC and EPBMAC is analyzed and evaluated. Two implementations are proposed for incremental deployment. The paper finally introduces evaluation with packet-based simulations. Both analytical and simulation results show the significant improvement in performance.

关 键 词：MULTICAST Quality of Service （QoS） Admission control Traffic probing 

分 类 号：TN915[电子电信—通信与信息系统]