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As the rapid growth of computing demand in cloud computing, the virtualization of data center network is more and more deployed. The data center is reconstructed to Software Defined Data Center with the technical of Software defined network. The services of data center are formed into Virtual Data Center, which is based on the virtual resource collection of the physical network section. So the VDC...
As named data networking (NDN) continues to evolve into a mature and production network, a robust and efficient congestion control mechanism has become a fundamental requirement for the success and wide deployment of NDN. In this paper, upon exploring the unique hop-by-hop Interest forwarding feature, based on the CUBIC, we develop a novel congestion control mechanism for NDN. Our congestion control...
In this paper, we investigate the problem of providing highly available, decentralized, dynamic path selection in high performance computing networking. We look at a use case for dynamic path selection that better utilizes bandwidth available in the network. The network architecture we propose is a partial mesh grid whereby each host is directly connected to four forwarding devices. We propose an...
Organizational issues of the backhaul network using Long Term Evolution technology are considered. Backhaul connections for different network segments are analyzed. A model of the backhaul network using Multiprotocol Label Switching technology is proposed to form the transport basis for existing networks. The bandwidth and transporting performance of the network is estimated.
The functionality of communication networks can be extended by using overlay networks. One interesting application of this idea is to acquire more flexibility in path choices through the network without introducing new mechanisms or physical changes to the underlying topology. This paper studies the benefits of installing main and backup paths assisted by an overlay network, solving this problem at...
This work provides a process to design stabilizing robust H∞ attitude controllers for autonomous underwater vehicles (AUVs) using classical loop-shaping techniques. We adopt the loop-shaping design ideas introduced by McFarlane and Glover [1]. In this paper, we present two control topologies and procedures for designing robust attitude controllers for streamlined AUVs. We describe how to achieve a...
Exascale networks are expected to comprise a significant part of the total monetary cost and 10-20% of the power budget allocated to exascale systems. Yet, our understanding of current and emerging workloads on these networks is limited. Left ignored, this knowledge gap likely will translate into missed opportunities for (1) improved application performance and (2) decreased power and monetary costs...
This paper proposes and evaluates a performance efficient application mapping algorithm for mesh-based NoCs. The proposed algorithm first prioritizes tasks of the given application graph based on their total in/out communication traffic. Then a task with the most communication traffic is selected and mapped onto the center part of the mesh topology i.e., a core with the most available communication...
The time-triggered principle establishes and maintains a system-wide synchronized time-base by the local clocks of the device. The proposed concept of Time-Triggered Ethernet (TTE) guarantees the determinacy of time-critical message for avionics and safety-critical systems. This paper presents an algorithm based on path-hop of tasks to generate a rational scheduling timetable to ensure is free of...
A continuous-time ΔΣ ADC with a new high-linearity Gm-cell is presented. A loop filter employing a Gm-C filter is preferable to an active-RC filter with op-amps for low power consumption and a large phase margin. However, distortion caused by the Gm-cell degrades the ADC performance. A cascoded flipped voltage follower Gm-cell is proposed in order to address this problem. Simulation results reveal...
Network-on-chip (NoC) is a key component for boosting the system performance of future chip multiprocessors. With the projected increase in the number of cores on the chip, the NoC is perceived to be the limiting component for performance and scaling. Photonic NoCs are under serious consideration for scaling future multicore architectures. In this paper, we propose two photonic NoC architectures based...
This paper presents a new topology for waveform-generation using two current conveyors, and a grounded capacitor or a resistor for tuning. It uses current-conveyors in place of voltage op-amps to offer better linearity, bandwidth, slew rate and thermal stability. Measured results obtained using commercially available devices AD844AN and passive components show excellent linearity and tunability for...
While the multicast paradigm offers tremendous benefits in efficiency for transmitting data across optical networks, the loss of a destination, or resource, node can result in both the loss of data at the node and the disconnection of an entire established request. We propose an integer linear programming based approach to optimally solve this problem in elastic optical networks, and show that the...
A key principle for optimizing network performances is to understand the relationship between network topology, configuration parameters, and their influence on the behavior of network protocols. While an attractive approach to this problem is to use formal models of protocols in combination with mathematical optimization, such methods are often limited by either poor scalability or approximations...
A simple scheme to implement dedicated path protection in Elastic Optical Networks is proposed and evaluated under dynamic traffic conditions. It consists in splitting the spectrum available in the network links in two bands used respectively for working and backup traffic. These bands are conveniently sized taking into account the network topology and the routing constraints. When the band dedicated...
Due to increasing number of cores, the placement of the cores onto NoC platform has become an important issue. If we can map the application cores close to each other to place them with more communication requirements, the performance parameters will improve and the network will be more efficient. In this paper, we propose a low complexity heuristic algorithm for the application mapping onto NoC to...
As we know, mapping is one of the most important steps in the process of network on chip. If we can map the application cores close to each other to place them with more communication requirements, the performance parameters will improve and the network will be more efficient. In this paper, we propose a low complexity heuristic algorithm for the application mapping onto NoC to improve latency. In...
Polarization diversity is generally achieved by using two orthogonal polarizations on the same link, which enables to double the available bandwidth. In this paper, we study the possibility to connect the nodes of a line-of- sight ring topology network with one single channel for all the links, with the condition that the polarization of any link is orthogonal to the polarization of the two adjacent...
Wireless sensor networks with radio frequency recharging of node batteries suffer from an imbalance in recharge amount on account of different distance to the master node. We describe an approach in which nodes are logically partitioned into a number of zones so that nodes in a closer zone act as relays for nodes in the next more distant zone. We show that the optimum partitioning can be found through...
We propose a vertex-centric distributed resource orchestration algorithm for finding all feasible mappings of a service function chain in multi-domain networks. Simulation results show superior efficiency and scalability for computing large service function chain requests.
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