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Design of assembly control algorithm based on burst-size feedback for optical burst switching network

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Chinese Optics Letters 2009年第5期7卷 377-379页

作者：付明磊乐孜纯 College of Information Engineering Zhejiang University of Technology College of Sciences Zhejiang University of Technology

A novel assembly control algorithm named burst-size feedback adaptive assembly period （BFAAP） is proposed. The major difference between BFAAP and other similar adaptive assembly algorithms is that the control curve of BFAAP is dynamically adjusted according to the feedback of outgoing burst size. BFAAP is compared with two typical algorithms fixed assembly period （FAP） and min-burst length max- assembly period （MBMAP） in simulation in terms of burst size distribution and assembly period. Moreover, the transmission control protocol （TCP） performance over BFAAP is also considered and simulated.

关键词： Adaptive algorithms Feedback Switching networks transmission control protocol

Treatment of Wet FGD Wastewater by a Modified Chemical Precipitation Method Using a Solid Powder Reagent

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Transactions of Tianjin University 2017年第2期23卷 110-121页

作者： Yong Kang Jia Lu Jing Guo School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China

This research focused on developing a modified chemical precipitation (MCP) method for treating wet flue gas desulfurization (FGD) waste water by adding a solid powder reagent directly. Simulated wet FGD wastewater was treated by MCP method in simulation experiments. Optimization experiments were carried out with the help of response surface methodology (RSM) and central composite design (CCD) to evaluate the effects and the interactions of experimental variables, including reagent dosage, temperature and pH value. The optimal reagent dosage, temperature and pH value were 3018.0 mg/L, 40.5 °C and 5.7, respectively. The RSM was demonstrated as an appropriate approach for the optimization of wet FGD wastewater treatment with the MCP method. A comparative study between the MCP method and the traditional chemical precipitation (TCP) method on raw wet FGD wastewater treatment was conducted. Results indicate that the MCP had less reagent dosage and variety than the TCP method had. Thus, the MCP method had a lower cost. © 2017, Tianjin University and Springer-Verlag Berlin Heidelberg.

关键词： Charge coupled devices pH transmission control protocol Wastewater treatment

Novel evaluation method of TCP performance over satellite links

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Journal of Systems Engineering and Electronics 2006年第2期17卷 462-466,F0003页

作者： Wang Lina Gu Xuemai Information Engineering School Univ. of Science and Technology Beijing Beijing 100083 P. R. China Communication Research Center Harbin Inst. of Technology Harbin 150001 P. R. China

A novel and efficient method to evaluate the transmission control protocol （TCP） performance over satellite links is presented. A TCP module is divided into three functional blocks, namely data processing, congestion control and error control The re-established TCP module is easy to update TCP congestion control strategy or error control strategy. With the proposed analysis approach, the interactions between different congestion control and error control mechanisms, as well as the performanee of various combination protocols in satellite environments have been investigated. Simulation results obtained through a series of experiments have shown that SNACK-based error control strategy can perform well with any other congestion control strategy. The best performanee can be achieved by TCP NewReno congestion control strategy and SNACK-based error control strategy.

关键词： geostationary satellites transmission control protocol congestion control error control.

An Efficient Priority-Driven Congestion control Algorithm for Data Center Networks

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China Communications 2020年第6期17卷 37-50页

作者： Jiahua Zhu Xianliang Jiang Yan Yu Guang Jin Haiming Chen Xiaohui Li Long Qu College of Information Science and Engineering Ningbo UniversityNingbo 315211China College of Cybersecurity Sichuan UniversityChengdu 610065China

With the emerging diverse applications in data centers,the demands on quality of service in data centers also become diverse,such as high throughput of elephant flows and low latency of deadline-sensitive ***,traditional TCPs are ill-suited to such situations and always result in the inefficiency(*** the flow deadline,inevitable throughput collapse)of data *** further degrades the user-perceived quality of service(QoS)in data *** reduce the flow completion time of mice and deadline-sensitive flows along with promoting the throughput of elephant flows,an efficient and deadline-aware priority-driven congestion control(PCC)protocol,which grants mice and deadline-sensitive flows the highest priority,is proposed in this ***,PCC computes the priority of different flows according to the size of transmitted data,the remaining data volume,and the flows’*** PCC adjusts the congestion window according to the flow priority and the degree of network ***,switches in data centers control the input/output of packets based on the flow priority and the queue *** from existing TCPs,to speed up the data transfers of mice and deadline-sensitive flows,PCC provides an effective method to compute and encode the flow priority *** to the flow priority,switches can manage packets efficiently and ensure the data transfers of high priority flows through a weighted priority scheduling with minor *** experimental results prove that PCC can improve the data transfer performance of mice and deadline-sensitive flows while guaranting the throughput of elephant flows.

关键词： data center network low-latency priority switch scheduling transmission control protocol

Mobility Aware Zone-Based Routing in Vehicle Ad hoc Networks Using Hybrid Metaheuristic Algorithm

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Intelligent Automation & Soft Computing 2023年第4期36卷 113-126页

作者： C.Nandagopal P.Siva Kumar R.Rajalakshmi S.Anandamurugan M.Kumarasamy College of Engineering KarurTamilnaduIndia Kalasalingam Academy of Research and Education KrishnankoilTamilnaduIndia Ramco Institute of Technology RajapalayamTamilnaduIndia Kongu Engineering College ErodeTamilnaduIndia

Vehicle Ad hoc Networks(VANETs)have high mobility and a rando-mized connection structure,resulting in extremely dynamic *** challenges,such as frequent connection failures,sustainability,multi-hop data transfer,and data loss,affect the effectiveness of transmission control protocols(TCP)on such wireless ad hoc *** avoid the problem,in this paper,mobility-aware zone-based routing in VANET is *** achieve this con-cept,in this paper hybrid optimization algorithm is *** hybrid algo-rithm is a combination of Ant colony optimization(ACO)and artiﬁcial bee colony optimization(ABC).The proposed hybrid algorithm is designed for the routing process which is transmitting the information from one place to *** optimal routing process is used to avoid trafﬁc and link ***ﬁtness function is designed based on Link stability and Residual *** validation of the proposed algorithm takes solution encoding,ﬁtness calculation,and updat-ing *** perform simulation experiments,NS2 simulator software is *** performance of the proposed approach is analyzed based on different metrics namely,delivery ratio,delay time,throughput,and *** effec-tiveness of the proposed method compared with different *** to other existing VANET algorithms,the hybrid algorithm has proven to be very efﬁcient in terms of packet delivery ratio and delay.

关键词： Vehicle ad hoc network transmission control protocol multi-hop data transmission ant colony optimization artiﬁcial bee colony optimization

Design of Congestion control Strategy Based on Pipeline Flux Leak Monitoring Networks

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Journal of Donghua University(English Edition) 2009年第5期26卷 554-558页

作者：周鹏 College of Information Engineering Tarim University

Flow against pipeline leakage and the pipe network sudden burst pipe to pipeline leakage flow for the application objects,network congestion avoidance strategy is designed in pipeline leak *** on the property of Markov chain for network data,a new estimator with particle filter is proposed for congestion control in this *** proposed scheme can predict the traffic patterns by the decision-making *** compare with previous scheme based on fuzzy neural network,the proposed scheme can adaptively adjust the network rate in real-time and reduce the cell loss rate,so that it can avoid the traffic *** results show that network congestion avoidance strategy with particle filter can improve the bandwidth utilization,transmission control protocol (TCP) friendliness and reduce the packet drop rate in Pipeline Flux Leak Monitoring networks.

关键词： transmission control protocol congestioncontrol particle filter cell loss rate QoS networks