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Internet of Things (IoT) is characterized by heterogeneous devices that interact with each other on a collaborative basis to fulfill a common goal. In this scenario, some of the deployed devices are expected to be constrained in terms of memory usage, power consumption and processing resources. To address the specific properties and constraints of such networks, a complete stack of standardized protocols...
Reducing power and energy consumption in large scale networks remains a challenging problem. The increasing need to support multimedia applications in future Internets further compound this problem. This paper addresses a key issue of how to efficiently assign per-router flow delays and set per-processor execution speeds, along a routing path, to jointly minimize energy consumption and meet end-to-end...
The Fast ReRoute flow-based model has been improved, where the node and link protection schemes in the linear form were formulated with the implementation of single path and multipath routing strategies. The use of linear-quadratic optimality criterion was substantiated, and the system hierarchy relations of weight coefficients in the objective function were determined with the aim to ensure maximum...
Middleboxes present new requirements that need to be integrated with traffic engineering applications that are already complex and consider myriad factors (e.g., routing, QoS, load-balancing). While it is possible to revisit traffic engineering algorithms to explicitly integrate middleboxes, such an approach is not compositional. Existing efforts at compositional SDN application development do not...
Due to the centralized control, network-wide monitoring and flow-level scheduling of software-defined-networking (SDN), it can be utilized to achieve quality of service (QoS) for cloud applications and services, such as voice over IP, video conference, and online games. However, most existing approaches stay at the QoS framework design and test level, while few works focus on studying the basic QoS...
The paper proposes a formal verification process for reconfigurable Network-on-chip in MPSoC. The reconfiguration of the MPSoC can lead to the addition of messages that can create an overload on the NoC and violate the deadline of messages that have to be routed. We present an adaptive routing algorithm for this case able to adapt himself to this overload. When the NoC is no more able to support the...
Cloud systems include both locally based servers at user premises and remote servers and multiple Clouds that can be reached over the Internet. This paper describes a smart distributed system that combines local and remote Cloud facilities. It operates with a task allocation system that takes decisions to allocate tasks dynamically to the service that offers the best overall Quality of Service and...
The investigation of the multipath QoS-routing dynamic tensor model with quality of service guarantees over the multiple metrics is presented. The expression for modeling state of the network router interface is used for representing the average packet delay as time-varying function. The conditions of ensuring QoS for the set of metrics as the packet rate and average delay are expressed. The novelty...
In this paper was developed a dynamic model of multipath routing based on balancing lengths of queues at the routers of telecommunication network represented by a system of linear differential equations of queue buffer utilization. The novelty of represented model is a modification of the conditions of balancing lengths of queues to take into account the priorities and lengths of packets in queues...
The topic of this paper is to propose a new network design algorithm which defines an efficient multi-path routing scheme in an MLPS network. Our goal is to offer QoS guarantees for delay and jitter which are considered as important performance metrics for interactive and real time services. To this end, we have formulated several nonlinear objective functions for determining network link utilization...
Pub/Sub model with the characteristics of loose coupling, fully information sharing, many-to-many communication and flexible resources reorganization is suitable for Message-Oriented Middleware's information exchanging on Telemetry and Command(TT&C) computers. According to the disadvantage of traditional model of message-Oriented Middleware(point-to-point, message queue, shared memory), An architecture...
Efforts to reduce power consumption in telecommunication networks follow in two mutually related directions — design of a more efficient equipment and development of energy-aware network control strategies and protocols. The paper presents a formulation of two-criteria traffic engineering problem, which takes advantage of energy saving capabilities in software routers. The first optimization criterion...
In this paper a novel fuzzy non-dominance routing and path ordering algorithm is presented for quality-of-service (QoS) routing for networks with inaccurate information. As one of the essential characteristic of both mobile wireless and fixed networks, the information available for decision making of QoS routing is always inaccurate[1][2]. Typically the link state information is collected by a decision...
System design starting from high level models can facilitate formal verification of system properties, such as safety and deadlock freedom. Yet, analyzing their QoS property, in our context, per-flow delay bound, is an open challenge. Based on xMAS (eXecutable Micro-Architectural Specification), a formal framework modeling communication fabrics, we present a QoS analysis procedure using network calculus...
Configuring a large number of routers and network devices to achieve quality of service (QoS) goals is a challenging task. In a differentiated services (DiffServ) environment, traffic flows are assigned specific classes of service, and service level agreements (SLA) are enforced at routers within each domain. We present a model for QoS configurations that facilitates efficient property-based verification...
Many network-intensive applications in various science, engineering, and business domains require high bandwidths to support large-scale data transfer over long distances. Such bandwidth requirements give rise to the development and deployment of high-performance networks that are capable of provisioning dedicated channels with reserved bandwidths through circuit/lambda-switching or MPLS/GMPLS techniques...
Configuring routers and network devices to achieve quality of service (QoS) goals is a challenging task. In a DiffServ environment, traffic flows are assigned specific classes of service, and service level agreements (SLA) are enforced at routers within the domain. We present a model for QoS policy configurations that facilitates efficient property-based verification. Network configuration is given...
This paper presents a method to enhance OLSR quality of service. Our approach heavily relies on the binary error rate metric and allows to rise the packet delivery ratio (PDR). We find that two elements of OLSR must be changed, the MPR selection algorithm and the route computation. We show that our approach provides better PDR than the original OLSR algorithm.
To meet topology changes causing by the growing web application dynamically,and with Agent of the high degree of flexibility, collaboration, autonomy, and self-adaptive characteristics, this paper discusses a self-adaptive interaction strategy based on Multi-Agents in hierarchy and analyzes an abstract model in which Multi-Agents are divided into the main Agents and sub-Agents in different layers...
Mobile Ad Hoc Networks (MANET) is a kind of network in which all the nodes can move randomly. As a new wireless communication network, MANET has attracted broad attention in recent years. But traditional distributed routing algorithm, which focuses on nodes, is complicated and huge in computation quantity, causes decline in performance of real-timing, throughput, ETE delay, network QoS, and etc. So,...
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