The Experts below are selected from a list of 49221 Experts worldwide ranked by ideXlab platform
Victor C. M. Leung - One of the best experts on this subject based on the ideXlab platform.
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Virtual Resource Allocation for Heterogeneous Services in Full Duplex-Enabled SCNs With Mobile Edge Computing and Caching
IEEE Transactions on Vehicular Technology, 2018Co-Authors: Zhiyuan Tan, Victor C. M. LeungAbstract:In the area of full duplex (FD) enabled small cell networks (SCNs), only limited works have been done on the consideration of mobile edge computing (MEC) and caching. In this paper, a Virtual FD-enabled SCN framework with MEC and caching is investigated for two kinds of heterogeneous services, high-data-rate service and computation-sensitive service. In our proposed framework, content caching and FD communication are jointly considered to provide high-data-rate service without the cost of backhaul Resource. And computation-sensitive service is offloaded to MEC, guaranteeing the delay requirement of users. From the view point of heterogeneous services, we formulate a Virtual Resource allocation problem, in which quality of experience of users and corresponding Resource consumption are recognized as system revenue and cost, respectively. Particularly, user association, power control and Resources (including spectrum, caching, and computing) allocation are jointly considered. Since the optimized problem is nonconvex, necessary variable relaxation and reformulation are conducted to transfer the original problem to a convex problem. Furthermore, alternating direction method of multipliers algorithm is adopted to obtain the optimal solution with low computation complexity. Finally, extensive simulations are conducted with different system parameter configurations to verify the effectiveness of our proposed scheme.
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INFOCOM Workshops - Virtual Resource allocation for heterogeneous services in full duplex-enabled small cell networks with cache and MEC
2017 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2017Co-Authors: Zhiyuan Tan, Victor C. M. LeungAbstract:In the area of full duplex (FD)-enabled small cell networks, limited works have been done on consideration of cache and mobile edge communication (MEC). In this paper, a Virtual FD-enabled small cell network with cache and MEC is investigated for two heterogeneous services, high-data-rate service and computation-sensitive service. In our proposed scheme, content caching and FD communication are closely combined to offer high-data-rate services without the cost of backhaul Resource. Computing offloading is conducted to guarantee the delay requirement of users. Then we formulate a Virtual Resource allocation problem, in which user association, power control, caching and computing offloading policies and Resource allocation are jointly considered. Since the original problem is a mixed combinatorial problem, necessary variables relaxation and reformulation are conducted to transfer the original problem to a convex problem. Furthermore, alternating direction method of multipliers (ADMM) algorithm is adopted to obtain the optimal solution. Finally, extensive simulations are conducted with different system configurations to verify the effectiveness of the proposed scheme.
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Virtual Resource management in green cellular networks with shared full duplex relaying and wireless Virtualization a game based approach
IEEE Transactions on Vehicular Technology, 2016Co-Authors: Richard F. Yu, Hong Ji, Victor C. M. LeungAbstract:Recent advances in loop interference cancelation techniques enable full-duplex relaying (FDR) systems, which transmit and receive simultaneously in the same band with high spectrum efficiency. Meanwhile, wireless Virtualization has attracted a lot of attention from both academia and industry because it can provide more flexibility, diversity, and other benefits in the process of wireless network design, construction, operation, and management. In this paper, we introduce the idea of wireless Virtualization into FDR cellular networks. Then, the problem of energy-aware Virtual Resource management is formulated as a three-stage Stackelberg game. The subgame perfect equilibrium for each stage is analyzed. In addition, the interplays of the three-stage game are discussed, and an iterative algorithm is proposed to obtain the Stackelberg equilibrium solution. Simulation results are presented to show the effectiveness of the proposed scheme.
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Distributed Virtual Resource Allocation in Small-Cell Networks With Full-Duplex Self-Backhauls and Virtualization
IEEE Transactions on Vehicular Technology, 2016Co-Authors: Lei Chen, Hong Ji, Gang Liu, Victor C. M. LeungAbstract:Wireless network Virtualization has attracted great attention from both academia and industry. Another emerging technology for next-generation wireless networks is in-band full-duplex (FD) communications. Due to its promising performance, FD communication has been considered to be an effective way of achieving self-backhauls for small cells. In this paper, we introduce wireless Virtualization into small-cell networks and propose a Virtualized small-cell network architecture with FD self-backhauls. We formulate the Virtual-Resource-allocation problem in Virtualized small-cell networks with FD self-backhauls as an optimization problem. Since the formulated problem is a mixed combinatorial and nonconvex optimization problem, its computational complexity is high. Moreover, the centralized scheme may suffer from signaling overhead, outdated dynamics information, and scalability issues. To solve it efficiently, we divide the original problem into two subproblems. For the first subproblem, we transfer it to a convex optimization problem and then solve it by an efficient alternating direction method of multipliers (ADMM)-based distributed algorithm. The second subproblem is a convex problem, which can be solved by each infrastructure provider. Extensive simulations are conducted with different system configurations to show the effectiveness of the proposed scheme.
Young Lee - One of the best experts on this subject based on the ideXlab platform.
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Performance evaluation of data center service localization based on Virtual Resource migration in software defined elastic optical network
Optics Express, 2015Co-Authors: Hui Yang, Yuanlong Tan, Yuefeng Ji, Yi Lin, Jianrui Han, Jie Zhang, Young LeeAbstract:Data center interconnection with elastic optical network is a promising scenario to meet the high burstiness and high-bandwidth requirements of data center services. In our previous work, we implemented cross stratum optimization of optical network and application stratums Resources that allows to accommodate data center services. In view of this, this study extends the data center Resources to user side to enhance the end-to-end quality of service. We propose a novel data center service localization (DCSL) architecture based on Virtual Resource migration in software defined elastic data center optical network. A migration evaluation scheme (MES) is introduced for DCSL based on the proposed architecture. The DCSL can enhance the responsiveness to the dynamic end-to-end data center demands, and effectively reduce the blocking probability to globally optimize optical network and application Resources. The overall feasibility and efficiency of the proposed architecture are experimentally verified on the control plane of our OpenFlow-based enhanced SDN testbed. The performance of MES scheme under heavy traffic load scenario is also quantitatively evaluated based on DCSL architecture in terms of path blocking probability, provisioning latency and Resource utilization, compared with other provisioning scheme.
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OFC - Data center service localization based on Virtual Resource migration in software defined elastic optical network
Optical Fiber Communication Conference, 2015Co-Authors: Hui Yang, Yuanlong Tan, Yi Lin, Jianrui Han, Jie Zhang, Yongli Zhao, Young LeeAbstract:We present a data center service localization architecture based on Virtual Resource migration in software defined elastic optical network. The overall feasibility and efficiency of the proposed architecture are experimentally verified on our testbed.
Hui Yang - One of the best experts on this subject based on the ideXlab platform.
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Performance evaluation of data center service localization based on Virtual Resource migration in software defined elastic optical network
Optics Express, 2015Co-Authors: Hui Yang, Yuanlong Tan, Yuefeng Ji, Yi Lin, Jianrui Han, Jie Zhang, Young LeeAbstract:Data center interconnection with elastic optical network is a promising scenario to meet the high burstiness and high-bandwidth requirements of data center services. In our previous work, we implemented cross stratum optimization of optical network and application stratums Resources that allows to accommodate data center services. In view of this, this study extends the data center Resources to user side to enhance the end-to-end quality of service. We propose a novel data center service localization (DCSL) architecture based on Virtual Resource migration in software defined elastic data center optical network. A migration evaluation scheme (MES) is introduced for DCSL based on the proposed architecture. The DCSL can enhance the responsiveness to the dynamic end-to-end data center demands, and effectively reduce the blocking probability to globally optimize optical network and application Resources. The overall feasibility and efficiency of the proposed architecture are experimentally verified on the control plane of our OpenFlow-based enhanced SDN testbed. The performance of MES scheme under heavy traffic load scenario is also quantitatively evaluated based on DCSL architecture in terms of path blocking probability, provisioning latency and Resource utilization, compared with other provisioning scheme.
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OFC - Data center service localization based on Virtual Resource migration in software defined elastic optical network
Optical Fiber Communication Conference, 2015Co-Authors: Hui Yang, Yuanlong Tan, Yi Lin, Jianrui Han, Jie Zhang, Yongli Zhao, Young LeeAbstract:We present a data center service localization architecture based on Virtual Resource migration in software defined elastic optical network. The overall feasibility and efficiency of the proposed architecture are experimentally verified on our testbed.
Hong Ji - One of the best experts on this subject based on the ideXlab platform.
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Virtual Resource management in green cellular networks with shared full duplex relaying and wireless Virtualization a game based approach
IEEE Transactions on Vehicular Technology, 2016Co-Authors: Richard F. Yu, Hong Ji, Victor C. M. LeungAbstract:Recent advances in loop interference cancelation techniques enable full-duplex relaying (FDR) systems, which transmit and receive simultaneously in the same band with high spectrum efficiency. Meanwhile, wireless Virtualization has attracted a lot of attention from both academia and industry because it can provide more flexibility, diversity, and other benefits in the process of wireless network design, construction, operation, and management. In this paper, we introduce the idea of wireless Virtualization into FDR cellular networks. Then, the problem of energy-aware Virtual Resource management is formulated as a three-stage Stackelberg game. The subgame perfect equilibrium for each stage is analyzed. In addition, the interplays of the three-stage game are discussed, and an iterative algorithm is proposed to obtain the Stackelberg equilibrium solution. Simulation results are presented to show the effectiveness of the proposed scheme.
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Distributed Virtual Resource Allocation in Small-Cell Networks With Full-Duplex Self-Backhauls and Virtualization
IEEE Transactions on Vehicular Technology, 2016Co-Authors: Lei Chen, Hong Ji, Gang Liu, Victor C. M. LeungAbstract:Wireless network Virtualization has attracted great attention from both academia and industry. Another emerging technology for next-generation wireless networks is in-band full-duplex (FD) communications. Due to its promising performance, FD communication has been considered to be an effective way of achieving self-backhauls for small cells. In this paper, we introduce wireless Virtualization into small-cell networks and propose a Virtualized small-cell network architecture with FD self-backhauls. We formulate the Virtual-Resource-allocation problem in Virtualized small-cell networks with FD self-backhauls as an optimization problem. Since the formulated problem is a mixed combinatorial and nonconvex optimization problem, its computational complexity is high. Moreover, the centralized scheme may suffer from signaling overhead, outdated dynamics information, and scalability issues. To solve it efficiently, we divide the original problem into two subproblems. For the first subproblem, we transfer it to a convex optimization problem and then solve it by an efficient alternating direction method of multipliers (ADMM)-based distributed algorithm. The second subproblem is a convex problem, which can be solved by each infrastructure provider. Extensive simulations are conducted with different system configurations to show the effectiveness of the proposed scheme.
Jie Zhang - One of the best experts on this subject based on the ideXlab platform.
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Performance evaluation of data center service localization based on Virtual Resource migration in software defined elastic optical network
Optics Express, 2015Co-Authors: Hui Yang, Yuanlong Tan, Yuefeng Ji, Yi Lin, Jianrui Han, Jie Zhang, Young LeeAbstract:Data center interconnection with elastic optical network is a promising scenario to meet the high burstiness and high-bandwidth requirements of data center services. In our previous work, we implemented cross stratum optimization of optical network and application stratums Resources that allows to accommodate data center services. In view of this, this study extends the data center Resources to user side to enhance the end-to-end quality of service. We propose a novel data center service localization (DCSL) architecture based on Virtual Resource migration in software defined elastic data center optical network. A migration evaluation scheme (MES) is introduced for DCSL based on the proposed architecture. The DCSL can enhance the responsiveness to the dynamic end-to-end data center demands, and effectively reduce the blocking probability to globally optimize optical network and application Resources. The overall feasibility and efficiency of the proposed architecture are experimentally verified on the control plane of our OpenFlow-based enhanced SDN testbed. The performance of MES scheme under heavy traffic load scenario is also quantitatively evaluated based on DCSL architecture in terms of path blocking probability, provisioning latency and Resource utilization, compared with other provisioning scheme.
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OFC - Data center service localization based on Virtual Resource migration in software defined elastic optical network
Optical Fiber Communication Conference, 2015Co-Authors: Hui Yang, Yuanlong Tan, Yi Lin, Jianrui Han, Jie Zhang, Yongli Zhao, Young LeeAbstract:We present a data center service localization architecture based on Virtual Resource migration in software defined elastic optical network. The overall feasibility and efficiency of the proposed architecture are experimentally verified on our testbed.
