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A Fuzzy Flow Control Approach for ABR Service in ATM Networks
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作者 张孝林 张飒兵 吴介一 《Journal of Southeast University(English Edition)》 EI CAS 2002年第1期33-39,共7页
The explicit rate flow control mechanisms for ABR service are used to sharethe available bandwidth of a bottleneck link fairly and reasonably among many competitive users andto maintain the buffer queue length of a bo... The explicit rate flow control mechanisms for ABR service are used to sharethe available bandwidth of a bottleneck link fairly and reasonably among many competitive users andto maintain the buffer queue length of a bottleneck switch connected to the link at a desired levelin order to avoid and control congestion in ATM networks. However, designing effective flow controlmechanisms for the service is known to be difficult because of the variety of dynamic parametersinvolved such as available link bandwidth, burst of the traffic, the distances between ABR sourcesand switches. In this paper, we present a fuzzy explicit rate flow control mechanism for ABRservice. The mechanism has a simple structure and is robust in the sense that the mechanism'sstability is not sensitive to the change in the number of active virtual connections (VCs). Manysimulations show that this mechanism can not only effectively avoid network congestion, but alsoensure fair share of the bandwidth for all active VCs regardless of the number of hops theytraverse. Additionally, it has the advantages of fast convergence, low oscillation, and high linkbandwidth utilization. 展开更多
关键词 atm network congestion prevent flow control fuzzy logic
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Congestion control scheme in ATM networks based on fast tracing-queue 被引量:1
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作者 Liu Zhixin Guan Xinping 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2007年第1期101-110,共10页
One of the more challenging and unresolved issues in ATM networks is the congestion control of available bit rate (ABR). The dynamic controller is designed based on the control theory and the feedback mechanism of e... One of the more challenging and unresolved issues in ATM networks is the congestion control of available bit rate (ABR). The dynamic controller is designed based on the control theory and the feedback mechanism of explicit rates With the given method of a chosen parameter, it can guarantee the stability of the controller and closed loop system with propagation delay and bandwidth oscillation. It needs less parameters(only one) to be designed. The queue length can converge to the given value in the least steps. The fairness of different connections is considered further. The simulations show better performance and good quality of service(QoS) is achieved. 展开更多
关键词 atm networks Congestion control Control theory Tracing-queue QOS
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Performance and robustness analysis of a fuzzy-immune flow controller in ATM networks with time-varying multiple time-delays
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作者 Tao REN Zhenhua GAO +3 位作者 Weiming KONG Yuanwei JING Muyi YANG Georgi M. DIMIROVSKI 《控制理论与应用(英文版)》 EI 2008年第3期253-258,共6页
For the Asynchronous Transfer Mode (ATM) networks with time-varying multiple time-delays, a more realistic model for the available bit rate (ABR) traffic class with explicit rate feedback is introduced. A fuzzy-im... For the Asynchronous Transfer Mode (ATM) networks with time-varying multiple time-delays, a more realistic model for the available bit rate (ABR) traffic class with explicit rate feedback is introduced. A fuzzy-immune controller is designed, which can adjust the rates of ABR on-line, overcome the bad effect caused by the saturation nonlinearity and satisfy the weighted fairness. Also, the sufficient condition that guarantees the stability of the closed-loop system with a fuzzy-immune controller is presented in theory for the first time. The algorithm exhibits good performance, and most importantly, has a solid theoretical foundation and can be implemented in practice easily. Simulation results show that the control system is rapid, adaptive, robust, and meanwhile, the quality of service (QoS) is guaranteed. 展开更多
关键词 atm networks ABR traffic TIME-DELAY Fuzzy-immune controller Robust stabilization
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Binary ABR flow control over ATM networks with uncertainty using discrete-time variable structure controller
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作者 Ming YAN Yuanwei JING 《控制理论与应用(英文版)》 EI 2008年第1期16-21,共6页
A binary available bit rate (ABR) scheme based on discrete-time variable structure control (DVSC) theory is proposed to solve the problem of asynchronous transfer mode (ATM) networks congestion in this paper. A ... A binary available bit rate (ABR) scheme based on discrete-time variable structure control (DVSC) theory is proposed to solve the problem of asynchronous transfer mode (ATM) networks congestion in this paper. A discrete-time system model with uncertainty is introduced to depict the time-varying ATM networks. Based on the system model, an asymptotically stable sliding surface is designed by linear matrix inequality (LMI). In addition, a novel discrete-time reaching law that can obviously reduce chatter is also put forward. The proposed discrete-time variable structure controller can effectively constrain the oscillation of allowed cell rate (ACR) and the queue length in a router. Moreover, the controller is self-adaptive against the uncertainty in the system. Simulations are done in different scenarios. The results demonstrate that the controller has better stability and robustness than the traditional binary flow controller, so it is good for adequately exerting the simplicity of binary flow control mechanisms. 展开更多
关键词 Binary ABR flow control atm networks Discrete-time variable structure control UNCERTAINTY Linear matrix inequality Discrete-time reaching law
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A New Approach to VC Routing in ATM Networks
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作者 Li Sheng-hong Du Xin-hua +1 位作者 Zhu Hong-wen Liu Ze-min 《Wuhan University Journal of Natural Sciences》 CAS 2000年第3期329-333,共5页
A new ant-algorithm-based routing approach is proposed for the VC routing problem with considering the comprehensive effect between the resource utilization and the load balance in ATM networks. In the approach, the b... A new ant-algorithm-based routing approach is proposed for the VC routing problem with considering the comprehensive effect between the resource utilization and the load balance in ATM networks. In the approach, the backup paths are calculated first, and then an ant algorithm based on the ability of ants to find the shortest path between their nest and the food source during their searching food, is constructed to optimize the VC global route. Simulation results show that the proposed approach can realize VC routing effectively according to the current traffic states in the networks and the user-specified delay requirements. 展开更多
关键词 atm networks virtual channel (VC) ant algorithm ROUTING
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Design of ATM Networks Congestion Controller Based on the Virtual Queue
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作者 刘志新 关新平 龙承念 《Journal of Electronic Science and Technology of China》 2004年第4期47-52,共6页
The single bottleneck node of ATM networks is considered. The virtual queue mechanism and the method of proportion-integral-differential(PID) control are adopted in the congestion control. The sufficient condition of ... The single bottleneck node of ATM networks is considered. The virtual queue mechanism and the method of proportion-integral-differential(PID) control are adopted in the congestion control. The sufficient condition of the considered system’s stability is given. The method of determining the PID parameters is given further. To quicken the speed of startup and remove the congestion rapidly, the factors of increase and decrease are set according to the length of queue. The result of simulation shows that the system, given an appropriate group of parameters, can acquire good robustness and dynamic performance, and guarantees the quality of service at the same time. 展开更多
关键词 atm networks virtual queue PID congestion control sufficient condition
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A DYNAMIC BANDWIDTH CONTROL SCHEME OF VP IN ATM NETWORKS 被引量:1
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作者 Lan Julong Wu Jiangxing Li Ou Wang Binqiang (P.O.Box 1001-Nat. Digital Switching Sys. Eng. and Technol. Research Center, Zhengzhou 450002) 《Journal of Electronics(China)》 2000年第3期213-218,共6页
This paper proposes an efficient adaptive bandwidth allocation scheme of virtual paths. The bandwidth of a virtual path is dynamically adjusted according to the link residual capacity. The scheme can remarkably reduce... This paper proposes an efficient adaptive bandwidth allocation scheme of virtual paths. The bandwidth of a virtual path is dynamically adjusted according to the link residual capacity. The scheme can remarkably reduce the load on node processing and simplify the network architecture, while keeping higher transmission efficiency. The excellent performance is proved by detailed theoretical analyses. 展开更多
关键词 network architecture BANDWIDTH control atm PACKET SWITCHING
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Source Timing Recovery of Constant-bit-rate(CBR) Services in ATM Networks
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作者 何家福 《High Technology Letters》 EI CAS 1996年第2期43-47,共5页
Asynchronous Transfer Mode(ATM)technique is regarded as an efficient approach forthe integration of diverse types of services in Broadband Integrated Services Digital Network(B-ISDN).The Asynchronous-Time-Division(ATD... Asynchronous Transfer Mode(ATM)technique is regarded as an efficient approach forthe integration of diverse types of services in Broadband Integrated Services Digital Network(B-ISDN).The Asynchronous-Time-Division(ATD)Statistical Multiplexing and FastPacket Switching in ATM networks bring serious uncertainty to the end-to-end Cell DelayVariation(CDV)of the CBR traffic(e.g.voice,audio,CBR video,etc.)and cause troublesfor the Source Timing Recovery(STR)of CBR services.This paper discusses the originsand features of the CDV,two STR implementation methods proposed by the InternationalTelecommunication Union(ITU),and an optimal STR scheme with a Digital-to-AnalogConverter(DAC)based Phase-Locked Loop(PLL). 展开更多
关键词 atm networks SOURCE TIMING recovery CBR SERVICES
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VBR WAVELET VIDEO CODING AND ITS RATE CONTROL IN ATM NETWORKS
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作者 Lin Gang Tian Tiehong Liu Zemin(P.O.Box 96, School of Telecom. Engineering, Beijing Univ. of Posts and Telecom, Beijing 100876) 《Journal of Electronics(China)》 2000年第3期219-224,共6页
This paper presents a new video coding system based on wavelet transform and its rate control scheme over ATM networks. First, three dimensional wavelet transform is performed for the original image sequence, and an e... This paper presents a new video coding system based on wavelet transform and its rate control scheme over ATM networks. First, three dimensional wavelet transform is performed for the original image sequence, and an extension of set partitioning in hierarchical trees algorithm is employed to quantize the wavelet coefficients. Then, the output rate of the coder is controlled at group of frame scale, ensuring that it conforms to the parameters of a leaky bucket controller. Several leaky buckets with different sizes are discussed too. Simulation shows the efficiency of this codec and the effectiveness of the proposed rate control scheme. 展开更多
关键词 atm networks VIDEO CODING WAVELET TRANSFORM Rate control
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A DYNAMIC TRANSMISSION CAPACITY ALLOCATION SCHEME FOR WIRED/WIRELESS ATM NETWORKS
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作者 Wang Jie Li Lemin(National Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of ELectronic Science & Technology of China, Chengdu 610054) 《Journal of Electronics(China)》 2000年第3期225-233,共9页
The previous research on administration of the transmission capacity in the wired/ wireless ATM networks only focuses on wired part or wireless part. There are very few people do the work extending to the links associ... The previous research on administration of the transmission capacity in the wired/ wireless ATM networks only focuses on wired part or wireless part. There are very few people do the work extending to the links associating with handoff in the whole network. This paper develops the algorithms of transmission capacity administration on the link connecting the base station and base station controller (including the air interface of the base station) and the VPs among the base station controllers in the wired/ wireless ATM networks, which adapt to the traffic state of each service in every cellular cell to allocate (provision) transmission capacity and to reserve handoff guard capacity on these links, respectively. By simulating and analyzing the performance of the algorithm, it is found that it does well for the multimedia communication in which the transmission capacity requirement of each service may be widely different, so that the network bandwidth resource can be used efficiently. 展开更多
关键词 Wired/wireless atm networks Capacity ALLOCATION HANDOFF Service classification
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PERFORMANCE ANALYSIS OF LEAKY BUCKET ALGORITHM WITH BURSTY TRAFFIC INPUT IN ATM NETWORKS
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作者 孙海荣 李乐民 《Journal of Electronics(China)》 1995年第2期105-112,共8页
A bursty traffic model is introduced in this paper to describe the statistical characteristics of packet video. The performance of leady bucket algorithm with bursty traffic input is analyzed. The influences of variou... A bursty traffic model is introduced in this paper to describe the statistical characteristics of packet video. The performance of leady bucket algorithm with bursty traffic input is analyzed. The influences of various parameters on QOS (Quality of Service) are investigated. The analysis shows that although the loss probability decreases through expanding the buffer capacity, the delay and delay jitter increase, whose effect on QOS will not be negligible. 展开更多
关键词 Communication network atm network USAGE parameter control LB ALGORITHM Bursty TRAFFIC
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A CONNECTION ADMISSION CONTROL SCHEME BASED ON GAME THEORETICAL MODEL IN ATM NETWORKS
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作者 Chen Huimin Wang Pu Li Yanda (Department of Automation, Tsinghua University, Beijing 100084) 《Journal of Electronics(China)》 1999年第1期7-15,共9页
In this paper, the main schemes of connection admission control (CAC) in ATM networks are briefly discussed especially the principle of dynamic bandwidth allocation. Then the fair share of the bandwidth among differen... In this paper, the main schemes of connection admission control (CAC) in ATM networks are briefly discussed especially the principle of dynamic bandwidth allocation. Then the fair share of the bandwidth among different traffic sources is analyzed based on cooperative game model. A CAC scheme is proposed using the genetic algorithm (GA) to optimize the bandwidth-delay-product formed utilization function that ensures the fair share and accuracy of accepting/rejecting the incoming calls. Simulation results show that the proposed scheme ensures fairness of the shared bandwidth to different traffic sources. 展开更多
关键词 CONNECTION ADMISSION control Cooperative GAME model GENETIC algorithm Dynamic BANDWIDTH ALLOCATION atm network
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A New SDH-Based ATM Network Survivability Escalation Mechanism
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作者 隆克平 金跃辉 程时端 《High Technology Letters》 EI CAS 2000年第1期29-34,共6页
This paper investigates survivability escalation strategies in multi layers transport networks such as ATM/SDH/WDM networks, and presents oriented failures and oriented traffic escalation mechanisms. Furthermore, W... This paper investigates survivability escalation strategies in multi layers transport networks such as ATM/SDH/WDM networks, and presents oriented failures and oriented traffic escalation mechanisms. Furthermore, We present a new survivability Escalation strategy for SDH Based ATM transport networks, which addresses difficult problem for resources sharing pool(RSP) among different layers restoration mechanisms. In this paper, we also present integer programming (IP) model for the resources sharing pool (RSP) design problem and the node simulation model for escalation Node. The simulation results show that the proposed ESP is very efficient. The proposed model can be easily extended for other types of multi layer networks, such as WDM based ATM networks or WDM based SDH networks. 展开更多
关键词 SURVIVABILITY SDH based atm networks ESCALATION strategies Resources SHARING pool(RSP) INTEGER Programming.
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THE TRANSITION PROBABILITY MATRIX OF A MARKOV CHAIN MODEL IN AN ATM NETWORK 被引量:2
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作者 YUEDequan ZHANGHuachen TUFengsheng 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2003年第4期506-512,共7页
In this paper we consider a Markov chain model in an ATM network, which has been studied by Dag and Stavrakakis. On the basis of the iterative formulas obtained by Dag and Stavrakakis, we obtain the explicit analytica... In this paper we consider a Markov chain model in an ATM network, which has been studied by Dag and Stavrakakis. On the basis of the iterative formulas obtained by Dag and Stavrakakis, we obtain the explicit analytical expression of the transition probability matrix. It is very simple to calculate the transition probabilities of the Markov chain by these expressions. In addition, we obtain some results about the structure of the transition probability matrix, which are helpful in numerical calculation and theoretical analysis. 展开更多
关键词 markov chain transition probability MATRIX atm network.
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On the QoS for ATM Networks Using a New Buffer Utilization Technique 被引量:1
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作者 Md. Julius Hossain Md. Nurul Huda 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期705-706,共2页
A buffer sharing scheme need to meet many competing objectives like robustness to changes in traffic conditions, fairness, efficiency, implementation simplicity, etc. Of the existing techniques, Push Out (PO) is optim... A buffer sharing scheme need to meet many competing objectives like robustness to changes in traffic conditions, fairness, efficiency, implementation simplicity, etc. Of the existing techniques, Push Out (PO) is optimum in terms of overall cell loss performance, but its delay performance is worse than that of all other methods for the multiple space priority. Another scheme named Dynamic Threshold (DT) is robust and adaptive which has good delay performance. A hybrid technique named Dynamic Threshold wi... 展开更多
关键词 atm in on for On the QoS for atm networks Using a New Buffer Utilization Technique
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Multicast Tree Algorithm in ATM Network Environment
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作者 许磊 刘斌 徐光佑 《Tsinghua Science and Technology》 SCIE EI CAS 2001年第1期14-17,共4页
Computer networks are undergoing a remarkable transformation. The widespread use of optical fiber has tremendously increased network bandwidth. Furthermore, greater CPU power, increasing disk capacity, and support for... Computer networks are undergoing a remarkable transformation. The widespread use of optical fiber has tremendously increased network bandwidth. Furthermore, greater CPU power, increasing disk capacity, and support for digital audio and video are creating demand for a new class of network services. For example, video-on-demand (VOD), distant learning, distant diagnosis, video conferences, and many other applications have popped up one after another in recent years. Many of these services have one thing in common. They all require that the same data be sent to multiple recipients. Even in traditional networks, this operation, called multicasting, can not be handled easily and cheaply. When scaled up to high-speed ATM-based networks, the situation becomes more difficult. Multiple data streams travel around the ATM networks with each stream sent to many different destinations simultaneously. Therefore, the networks need a very efficient algorithm for multicast routing. This paper proposes an algorithm for multicast routing in ATM networks. The network routing cost is defined as the combination of the cost of establishing connections, the cost of overall bandwidth and the cost of overall switching. Our routing algorithm generates an optimal multicast routing with minimal overall network cost. 展开更多
关键词 atm network ROUTING MULTICAST
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Congestion control for ATM multiplexers using neural networks:multiple sources/single buffer scenario
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作者 杜树新 袁石勇 《Journal of Zhejiang University Science》 EI CSCD 2004年第9期1124-1129,共6页
A new neural network based method for solving the problem of congestion control arising at the user network interface (UNI) of ATM networks is proposed in this paper. Unlike the previous methods where the coding rate ... A new neural network based method for solving the problem of congestion control arising at the user network interface (UNI) of ATM networks is proposed in this paper. Unlike the previous methods where the coding rate for all traffic sources as controller output signals is tuned in a body, the proposed method adjusts the coding rate for only a part of the traffic sources while the remainder sources send the cells in the previous coding rate in case of occurrence of congestion. The controller output signals include the source coding rate and the percentage of the sources that send cells at the corresponding coding rate. The control methods not only minimize the cell loss rate but also guarantee the quality of information (such as voice sources) fed into the multiplexer buffer. Simulations with 150 ADPCM voice sources fed into the multiplexer buffer showed that the proposed methods have advantage over the previous methods in the aspect of the performance indices such as cell loss rate (CLR) and voice quality. 展开更多
关键词 Congestion control atm networks Neural networks Source coding rate
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Intelligent Flow Control Technique of ABR Service in ATM Networks Based on Fuzzy Neural Networks 被引量:7
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作者 Zhang Liangjie Li Yanda Li Qinghua Wang Pu (Dept of Automation, Tsinghua University, Beijing 100084) 《通信学报》 EI CSCD 北大核心 1997年第3期3-9,共7页
InteligentFlowControlTechniqueofABRServiceinATMNetworksBasedonFuzzyNeuralNetworks①ZhangLiangjieLiYandaLiQing... InteligentFlowControlTechniqueofABRServiceinATMNetworksBasedonFuzzyNeuralNetworks①ZhangLiangjieLiYandaLiQinghuaWangPu(DeptofA... 展开更多
关键词 模糊神经网络 流量控制 异步传输网 反馈 可用位率
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AVariablebitrateVideoCodingSchemeBasedonMorphologicalOperationsforATMNetworks
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作者 ChenHuifang DaiWenqi 《通信学报》 EI CSCD 北大核心 1998年第5期84-89,共6页
AVariablebitrateVideoCodingSchemeBasedonMorphologicalOperationsforATMNetworksChenHuifangDaiWenqiQiuPeilian... AVariablebitrateVideoCodingSchemeBasedonMorphologicalOperationsforATMNetworksChenHuifangDaiWenqiQiuPeiliang(InstituteofInfo... 展开更多
关键词 视频编码 atm网络 异步传输网 多位率 数学形态操作
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THE EFFECT OF VP SWITCHES ON THE PERFORMANCE OF BACKUP-VP ALGORITHM IN ATM SELF-HEALING NETWORKS
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作者 Tang Jian(National Digital Switching Center, Zhengzhou 450002}Lei Zhenming(Beijing University of Posts and Telecommunications, Beijing 100088) 《Journal of Electronics(China)》 1999年第4期311-319,共9页
In this approach, three typical implementation schemes of self-healing function in VP switches are discussed and three corresponding queue models for backup-VP self-healing algorithm are established. Computer simulati... In this approach, three typical implementation schemes of self-healing function in VP switches are discussed and three corresponding queue models for backup-VP self-healing algorithm are established. Computer simulations are made to these queue models, and detailed analyses are presented to the effect of both the three implementation schemes of self-healing function and some architecture parameters in VP switches on self-healing performance. 展开更多
关键词 atm network VP SWITCH SELF-HEALING ALGORITHM
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