|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Providing personalized converged services based on flexible network reconfiguration显示文摘Recent developments show a progressing convergence of networks, services, and applications, which results in the necessity for new approaches to provide a ubiquitous experience on converged networks for specialized high data-rate services. A fundamental diversifying attribute for the future physical network convergence paradigm is pressing. In this paper, we make researches on converged resource reconfiguration model of substrate physical network based on hardware virtualization and provide a service oriented network architecture as a network convergence primitive. Based on the idea of hardware virtualization which is performed by platform deformation and component processing with reconfiguration (here, they are realized as reconfigurable routers (RR)), the substrate converged network, which inter-connects various access networks by reconfigurable routers, could be mapped into multiplex service oriented logical networks, supports dynamic reconfiguration due to diversified quality of services under heterogeneous environment, and therefore provides more flexible and high- speed multiple services. In addition, to demonstrate the generality of our model, we provide a prototype of reconfigurable router. The design, implementation and task scheduling as well as both hardware and software reconfiguration process of reconfigurable router are discussed in detail. Our evaluation shows that reconfigurable router is transparent for upper service-providing networks and results in little performance impact on the service delivery when both hardware and software reconfiguration are used. | HU YuXiang LAN JuLong WU JiangXing | 2011 | Science China(Information Sciences)2011，54，2： | 15 |
| 2 | Survivable Virtual Network Mapping Using Optimal Backup Topology in Virtualized SDN显示文摘Software-Defined Network architecture offers network virtualization through a hypervisor plane to share the same physical substrate among multiple virtual networks.However,for this hypervisor plane,how to map a virtual network to the physical substrate while guaranteeing the survivability in the event of failures,is extremely important.In this paper,we present an efficient virtual network mapping approach using optimal backup topology to survive a single link failure with less resource consumption.Firstly,according to whether the path splitting is supported by virtual networks,we propose the OBT-Ⅰ and OBT-Ⅱ algorithms respectively to generate an optimal backup topology which minimizes the total amount of bandwidth constraints.Secondly,we propose a Virtual Network Mapping algorithm with coordinated Primary and Backup Topology(VNM-PBT)to make the best of the substrate network resource.The simulation experiments show that our proposed approach can reduce the average resource consumption and execution time cost,while improving the request acceptance ratio of VNs. | WANG Zhiming WU Jiangxing WANG Yu QI Ning LAN Julong | 2014 | China Communications2014，11，2： | 14 |
| 3 | Reliable and Load Balance-Aware Multi-Controller Deployment in SDN显示文摘Software Defined Networking(SDN) provides flexible network management by decoupling control plane and data plane. However, such separation introduces the issues regarding the reliability of the control plane and controller load imbalance in the distributed SDN network, which will cause the low network stability and the poor controller performance. This paper proposes Reliable and Load balance-aware Multi-controller Deployment(RLMD) strategy to address the above problems. Firstly, we establish a multiple-controller network model and define the relevant parameters for RLMD. Then, we design the corresponding algorithms to implement this strategy. By weighing node efficiency and path quality, Controller Placement Selection(CPS) algorithm is introduced to explore the reliable deployments of the controllers. On this basis, we design Multiple Domain Partition(MDP) algorithm to allocate switches for controllers according to node attractability and controller load balancing rate, which could realize the reasonable domain planning. Finally, the simulations show that, compared with the typical strategies, RLMD has the better performance in improving the reliability of the control plane and balancing the distribution of the controller loads. | Tao Hu Peng Yi Jianhui Zhang Julong Lan | 2018 | China Communications2018，15，11： | 6 |
| 4 | A Distributed Decision Mechanism for Controller Load Balancing Based on Switch Migration in SDN显示文摘Software Defined Networking(SDN) provides flexible network management by decoupling control plane from data plane. And multiple controllers are deployed to improve the scalability and reliability of the control plane, which could divide the network into several subdomains with separate controllers. However, such deployment introduces a new problem of controller load imbalance due to the dynamic traffic and the static configuration between switches and controllers. To address this issue, this paper proposes a Distribution Decision Mechanism(DDM) based on switch migration in the multiple subdomains SDN network. Firstly, through collecting network information, it constructs distributed migration decision fields based on the controller load condition. Then we choose the migrating switches according to the selection probability, and the target controllers are determined by integrating three network costs, including data collection, switch migration and controller state synchronization. Finally, we set the migrating countdown to achieve the ordered switch migration. Through verifying several evaluation indexes, results show that the proposed mechanism can achieve controller load balancing with better performance. | Tao Hu Peng Yi Jianhui Zhang Julong Lan | 2018 | China Communications2018，15，10： | 6 |
| 5 | EARS: Intelligence-Driven Experiential Network Architecture for Automatic Routing in Software-Defined Networking显示文摘Software-Defined Networking(SDN)adapts logically-centralized control by decoupling control plane from data plane and provides the efficient use of network resources.However,due to the limitation of traditional routing strategies relying on manual configuration,SDN may suffer from link congestion and inefficient bandwidth allocation among flows,which could degrade network performance significantly.In this paper,we propose EARS,an intelligence-driven experiential network architecture for automatic routing.EARS adapts deep reinforcement learning(DRL)to simulate the human methods of learning experiential knowledge,employs the closed-loop network control mechanism incorporating with network monitoring technologies to realize the interaction with network environment.The proposed EARS can learn to make better control decision from its own experience by interacting with network environment and optimize the network intelligently by adjusting services and resources offered based on network requirements and environmental conditions.Under the network architecture,we design the network utility function with throughput and delay awareness,differentiate flows based on their size characteristics,and design a DDPGbased automatic routing algorithm as DRL decision brain to find the near-optimal paths for mice and elephant flows.To validate the network architecture,we implement it on a real network environment.Extensive simulation results show that EARS significantly improve the network throughput and reduces the average packet delay in comparison with baseline schemes(e.g.OSPF,ECMP). | Yuxiang Hu Ziyong Li Julong Lan Jiangxing Wu Lan Yao | 2020 | China Communications2020，17，2： | 4 |
| 6 | Enabling network function combination via service chain instantiation显示文摘 | Guozhen Cheng Hongchang Chen Hongchao Hu Zhiming Wang Julong Lan | 2015 | Computer Networks2015，，： | 2 |
| 7 | A Safe and Reliable Heterogeneous Controller Deployment Approach in SDN显示文摘Software-Defined Networking(SDN)provides flexible and global network management by decoupling control plane from data plane,and multiple controllers are deployed in the network in a logically centralized and physically distributed way.However,the existing approaches generally deploy the controllers with the same type in the network,which easily causes homogeneous controller common-mode fault.To this end,this paper proposes heterogeneous controller deployment in the SDN,considering the different types of controllers and relevant criteria(e.g.,delay,control link interruption rate,and controller fault rate).Then,we introduce a Safe and Reliable Heterogeneous Controller Deployment(SRHCD)approach,consisting of two stages.Stage 1 determines the type and the number of heterogeneous controllers required for the SDN network based on the dynamic programming.Stage 2 divides the SDN network into multiple subnets by k-means algorithm and improves the genetic algorithm to optimize the heterogeneous controller deployment in these SDN subnets to ensure reliable switch-controller communications.Finally,the simulation results show that the proposed approach can effectively reduce the control plane fault rate and increase the attack difficulties.Besides,the switch-controller delay has been lowered by 16.5%averagely. | Peng Yi Tao Hu Yanze Qu Liang Wang Hailong Ma Yuxiang Hu Julong Lan | 2021 | China Communications2021，18，8： | 2 |
| 8 | HuffmanBased Join-Exit-Tree Scheme for Contributory Key Management显示文摘 | Gu Xiaozhuo Yang Jianzu Lan Julong | | 0，，1： | 1 |
| 9 | Traffic Engineering Based on Deep Reinforcement Learning in Hybrid IP/SR Network显示文摘Segment Routing(SR)is a new routing paradigm based on source routing and provide traffic engineering(TE)capabilities in IP network.By extending interior gateway protocol(IGP),SR can be easily applied to IP network.However,upgrading current IP network to a full SR one can be costly and difficult.Hybrid IP/SR network will last for some time.Aiming at the low flexibility problem of static TE policies in the current SR networks,this paper proposes a Deep Reinforcement Learning(DRL)based TE scheme.The proposed scheme employs multi-path transmission and use DRL to dynamically adjust the traffic splitting ratio among different paths based on the network traffic distribution.As a result,the network congestion can be mitigated and the performance of the network is improved.Simulation results show that our proposed scheme can improve the throughput of the network by up to 9%than existing schemes. | Bo Chen Penghao Sun Peng Zhang Julong Lan Youjun Bu Juan Shen | 2021 | China Communications2021，18，10： | 1 |
| 10 | PERFORMANCE EVALUATION AND COMPARISON OF THREE COUNTING BLOOM FILTER SCHEMES显示文摘The Counting Bloom Filter(CBF) is a kind of space-efficient data structure that extends a Bloom filter so as to allow approximate multiplicity queries on a dynamic multi-set.This paper evaluates the performance of multiplicity queries of three simple CBF schemes-the Na?ve Counting Bloom Filter(NCBF), the Space-Code Bloom Filter(SCBF) and the d-left Counting Bloom Filter(dlCBF)-using metrics of space complexity and counting error under both uniform and zipfian multiplicity distributions.We compare their counting error under same space complexity, and their space complexity when similar counting errors are achieved respectively.Our results show that dlCBF is the best while SCBF is the worst in terms of both space-efficiency and accuracy.Furthermore, the performance gap between dlCBF and the others has a trend of being enlarged with the increment of space occupation or counting accuracy. | Zhang Jin Wu Jiang-xing Lan Julong Liu Jianqiang | 2009 | Journal of Electronics(China)2009，26，3： | 1 |
| 11 | Huffmanbased join-exit-tree scheme for contributory key management 显示文摘 | Gu Xiaozhuo Yang Jianzu Lan Julong | 2009 | Computer and Security2009，28，1： | 1 |
| 12 | A DYNAMIC BANDWIDTH CONTROL SCHEME OF VP IN ATM NETWORKS显示文摘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. | Lan Julong Wu Jiangxing Li Ou Wang Binqiang (P.O.Box 1001-Nat. Digital Switching Sys. Eng. and Technol. Research Center, Zhengzhou 450002) | 2000 | Journal of Electronics(China)2000，17，3： | 1 |
| 13 | A SCHEDULING ALGORITHM USING COMPENSATING ROUND ROBIN IN PACKET-SWTICHING BROADBAND NETWORKS显示文摘A new approximation of fair queuing called Compensating Round Robin (CRR)is presented in this paper. The algorithm uses packet-by-packet scheduler with a compensating measure. It achieves good fairness in terms of throughput, requires only O(1) time complexity to process a packet, and is simple enough to be implemented in hardware. After the performances are analyzed, the fairness and packet loss rate of the algorithm are simulated. Simulation results show that the CRR can effectively isolate the effects of contending sources. | Lan Julong Wang Binqiang Li Ou Wu Jiangxing(National Digital Switching System Eng. & Technological Research Center.Zhengzhou 450002) | 2002 | Journal of Electronics(China)2002，19，2： | 1 |
| 14 | Network View and Cognitive Mechanism for Virtual Network Resource Management Based Intelligent显示文摘Network virtualization has been a particularly important driving force behind the development of NGN. Finding effective ways to control self-adapting virtual networks has become a research hot spot. This paper tries to find an efficient way in combining dynamic resource sensing with traffic character and requirements in virtual network, based on that an intelligent cognition based virtual network resources management model has been put forward. We design a network topology view by coloring network topology matrix with current resources model. We present an intelligent virtual resource management mechanism based on the proposed network topology view. Experiment results illustrate that the proposed mechanism can improve VN capacity by automatic resource adjustment, which can obtain high utilization of VN resources without increasing computational expenses. | WU Xiaochun WU Chunming WANG Bin QIAN Yaguan LAN Julong | 2014 | Chinese Journal of Electronics2014，23，3： | 1 |
| 15 | DESIGN AND EVALUATION OF A PIPELINED FORWARDING ENGINE显示文摘Recent advances in broadband technology have caused forwarding engines to handle pack- ets with over 10 gigabit per second. In this paper, we present a high-speed forwarding pipeline which can finish all of the routing and forwarding tasks in the way of pipelining. We also establish the analysis model of the pipeline with which one can evaluate some key performance parameters of the forwarding engine such as forwarding rate and forwarding delay. We find that the pipeline is of good scalability and can forward unicast packets up to the speed of 40Gbit/s. | Li Yufeng Chen Yue Lan Julong | 2007 | Journal of Electronics(China)2007，24，2： | 1 |
| 16 | Identifying elephant flows in internet backbone traffic with bloom filters and LRU显示文摘 | Zhen Zhang Binqiang Wang Julong Lan | 2014 | Computer Communications2014，，： | 1 |
| 17 | A NEW DECODER OF SYNCHRONOUS OPTICAL CODE DIVISION MULTIPLE ACCESS SYSTEMS USING SEGMENTED CORRELATION显示文摘A new segmented correlating decoder of synchronous optical CDMA using modified prime sequence codes is proposed. The performance of the proposed system is analyzed under the assumption of Poisson shot noise model for the receiver photodetector. The decoder technique is shown to be more effective to improve the bit error probability performance than the method using an optical hard-limiter. | Li Ou Wu Jiangxing Lan Julong(National Digital Switching System Engineering & Technology Research Center, Zhengzhou 450002) | 2001 | Journal of Electronics(China)2001，18，2： | 0 |
| 18 | Performance Analysis of Hybrid Distribution in Human-Centric Multimedia Networking显示文摘With the booming of Human-centric multimedia networking(HMN),there are rising amount of human-made multimedia that needs to distribute to consumers with higher speed and efficiency.Hybrid distribution of Client/Server(C/S) and Peer-to-Peer(P2P) have been successfully deployed on the Internet and the practical benefits have been widely reported,while its theoretical performance remains unknown for mass data delivery unfortunately.This paper presents an analytical and experimental study on the performance of accelerating large-scale hybrid distribution over the Internet.In particular,this paper focuses on the user behavior in HMN and establishes a user behavior model based on the Kermack-McK endrick model in epidemiology.Analytical expressions of average delay in HMN are then derived based on C/S,P2 P and hybrid distribution,respectively.Our simulation shows how to design and deploy a hybrid distribution system of HMN that helps to bridge the gap between system ultilization and quality of service,which provides direct guidance for practical system design. | HU Yuxiang DONG Fang LAN Julong | 2016 | Chinese Journal of Electronics2016，25，4： | 0 |
| 19 | Resource Scheduling Algorithm and Ecnomic Model in ForCES Networks显示文摘Resource scheduling algorithm for ForCES(Forwarding and Control Element Separation) networks need to meet the flexibility,programmability and scalability of node resources.DBC(Deadline Budget Constrain) algorithm relies on users select cost or time priority,then scheduling to meet the requirements of users.However,this priority strategy of users is relatively simple,and cannot adapt to dynamic change of resources,it is inevitable to reduce the QoS.In order to improve QoS,we refer to the economic model and resource scheduling model of cloud computing,use SAL(Service Level Agreement) as pricing strategy,on the basis of DBC algorithm,propose an DABP(Deadline And Budget Priority based on DBC) algorithm for ForCES networks,DABP combines both budget and time priority to scheduling.In simulation and test,we compare the task finish time and cost of DABP algorithm with DP(Deadline Priority) algorithm and BP(Budget Priority) algorithm,the analysis results show that DABP algorithm make the task complete with less cost within deadline,benifical to load balancing of ForCES networks. | ZHUGE Bin DENG Li DAI Guowei WAN Lei WANG Weiming LAN Julong | 2014 | China Communications2014，11，3： | 0 |
| 20 | A secure routing model based on distance vector routing algorithm显示文摘Distance vector routing protocols have been widely adopted as an efcient routing mechanism in current Internet,and many wireless networks.However,as is well-known,the existing distance vector routing protocols are insecure as it lacks of efective authorization mechanisms and routing updates aggregated from other routers.As a result,the network routing-based attacks become a critical issue which could lead to a more deteriorate performance than other general network attacks.To efciently address this issue,this paper,through analyzing the routing model and its security aspect,and presents a novel approach on guaranteeing the routing security.Based on the model,we present the security mechanism including the message exchange and update message security authentication mechanism.The suggested approach shows that the security mechanism can efectively verify the integrity and validate the freshness of routing update messages received from neighbor nodes.In comparison with exiting mechanisms(SDV,S-RIP etc),the proposed model provides enhanced security without introducing significant network overheads and complexity. | WANG Bin WU ChunMing YANG Qiang LAI Pan LAN JuLong GUO YunFei | 2014 | Science China(Information Sciences)2014，57，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员