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Software-defined networking (SDN) is one of the most debated topics in the modern IT industry. This networking concept implies that all network control functions are concentrated in a single logical center referred to as the SDN controller. This paper dwells upon the ways to reduce control traffic latency in the OpenFlow-based software-defined network. We have analyzed and classified the main latency...
Analysis of Network Intermediate Connectivity is one of the important and challenging issues in Vehicular Adhoc Network (VANET). Gradually, intermediate connectivity among the nodes becomes a popular interesting research paradigm in high mobility domain. It depends upon the movement pattern of the vehicles and the routing of packet transmission depends upon the connectivity of the nodes. Among the...
Vedic maths based multiplier is a novel and high speed multiplier. Adder is one of the main components used in this technique. Using fast adder will enhance the overall performance of the Vedic multiplier. In this work, comparative analysis is done using different adder architectures in Synopsis Design Compiler with different standard cell libraries at 32/28 nm. Various Adder topologies like Ripple...
In this paper we discuss about 3 general issues on mesh topology in “networks on chip” (NOC): Utilizing multi-level mesh for delay reduction, using route by considering the mesh topology concept, and finally an optimal model of mesh topology named “multi-level mesh topology” which is defined based on 5-layer network model is suggested. In multi-level mesh topology we can see that this architecture...
Topology control is one of the key technologies in ad hoc network. Recently some topology control algorithms focus on reducing the end-to-end delay have been proposed. However, they do not consider the delay which is caused by contending for the shared channel and collision at MAC layer. In this paper, we put forward a new delay model to character the link delay which is composed by the transmission...
Load balancing and delay optimizing play significant roles in improving network performance. However, in the current networks, only local load balance (LB) and mean delay optimization mechanisms are adopted, which ignore the jitter and the network's status. In this paper, a dynamic LB algorithm is proposed to optimize the network delay with a global view (LBGV). It makes a traffic distribution decision...
In this paper, we investigate the topology boundary conditions in wireless mesh networks (WMNs) with focus on the maximum network diameter of such networks under different performance requirements. Specifically, we derive an end-to-end maximum node number upper bound, i.e., an upper bound on the network diameter as a function of end-to-end delay requirement, and an end-to-end maximum node number upper...
In this paper, we study the formation and update process of agent's opinion of view in the social network. Based on the Non-Bayesian learning model, we develop three kinds of social learning models: Static social network model with fixed delay; Random evolution of dynamic social network model; Deterministic evolution of dynamic social network model with fixed delay. By applying the algebraic graph...
The consensus of double-integrator discrete-time multi-agent system is studied based on the second-order neighbors' information in this paper. The comparison between the convergence rate of second-order neighbor protocol and the one of general protocol is analyzed. Considering there exists delay in communication, the consensus condition of double-integrator discrete-time multi-agent system with delay...
Certain Wireless Sensor Network (WSN) applications such as patient monitoring, smart grid, and equipment condition monitoring require accurate estimation of specific WSN parameters such as end-to-end delay, reliability and power consumption. The estimation of these parameters calls for an accurate and lightweight WSN model that is suitable for the low processing capabilities of sensor nodes. In this...
In this paper, two novel energy efficient resource allocation schemes are proposed for beyond next generation mobile networks. The schemes take into account the clustering capability of base stations before assigning users to the base stations. A topology management scheme that adjusts the number of active base stations in accordance with the traffic load and also responds to QoS deterioration is...
In this paper, we propose two adaptive algorithms to control Destination Advertisement Option (DAO) packet emissions in RPL non-storing mode: a centralized, or controlled by the DAG root, and a distributed. We propose new mechanisms to derive the most appropriate value for the DelayDAO Timer, a timer that determines how long a node should wait before transmitting its destination advertisement packet...
A mobile ad hoc network is much more assailable to attacks than a wired network due to its limited physical security, high mobility and lack of centralized administration. Jellyfish is a new denial of service attack. There are three kinds of JellyFish attacks i.e. JF Reorder Attack, JF Periodic Dropping Attack, JF Delay Variance Attack. In JF delay variance attack, intruder node needs to intrude into...
This paper proposes a multi-objective controller synthesis strategy for the design of distributed formation control schemes for multi-agent systems. The agents are modeled as identical linear discrete-time invariant systems. The proposed synthesis method is based on a recent analysis result that poses a constraint on a closed-loop ℓ1 norm to guarantee robust stability of a formation under arbitrary...
This paper studies the consensus among identical agents that are at most critically unstable and coupled through networks with uniform constant communication delay. An achievable upper bound of delay tolerance is obtained which explicitly depends on agent dynamics and network topology. The dependence on network topology disappears in the case of undirected networks. For any delay satisfying this upper...
Data processing tasks are increasingly spread across the internet to account for the spatially distributed nature of many data sources. In order to use network resources efficiently, subtasks need to be distributed in the network so data can be filtered close to the data sources. Previous approaches to this operator placement problem relied on various heuristics to constrain the complexity of the...
Increasing demand for the mobile, low energy systems has laid emphasis on the development of low power processors. Low power design has to be incorporated into fundamental computation units, such as multipliers. The optimization of the energy-delay product in such low power multipliers will enable energy efficient computation. This study proposes a power estimation tool to analyze different array...
This paper studies the consensus among identical agents that are at most critically unstable and coupled through networks with uniform constant communication delay. An achievable upper bound of delay tolerance is obtained which explicitly depends on agent dynamics and network topology. The dependence on network topology disappears in the case of undirected networks. For any delay satisfying this upper...
This paper addresses the output consensus problem of heterogeneous multi-agent systems. Specifically, we propose consensus algorithms that account for input saturations using only the available output measurements. Our approach takes roots from a simple design procedure built around ideal first order consensus schemes (full state availability and no input saturations) and extends to the more challenging...
We propose a framework that allows to study hybrid systems with delays through generalized concepts of solutions. Such generalized solutions have proved to be suitable for the analysis and design of hybrid control systems. Extending these concepts to systems with delays is motivated by control applications where hybrid feedback control laws play an important role but delays are often inevitable. Our...
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