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This paper addresses the problem of cloud and networking resources mapping in distributed and hybrid cloud environments. In this context private and public resources are acquired and combined to set up tenant dedicated virtual infrastructures to fulfil distributed applications requirements. An exact algorithm is proposed to map jointly nodes and links of the requested virtual infrastructure graph...
Current Internet traffic is carried mainly by the Transmission Control Protocol (TCP), and the performance of the Internet depends strongly on how well TCP works. Detecting and mitigating the congestion is one of the main tasks of this protocol, in fact, different TCP versions are defined by their congestion control algorithm. Also, Active Queue Management (AQM) algorithms share the same goal of congestion...
To mitigate performance anomalies due to different transmission rates and improve throughput performance in ad-hoc networks, we propose a method called user cooperative mobility in which a node, i.e., a user of an ad-hoc network, moves (changes its geometrical position) for communication. Unlike previous research regarding user cooperative mobility, it is not easy to decide to where the user should...
A challenge in the adoption of the OpenFlow (OF)-based SDN paradigm is related to the limited number of OF rules supported by the network devices. The technology used to implement the OF rules is TCAM, which is expensive and power demanding. Due to this, the network devices are either very costly or they can support a very limited number of OF rules. One way to cope with this limitation, is to perform...
The Wireless sensor network (WSN) deployment areas in real time environment are often inaccessible and unreliable communication resulting in degradation of network performance. The critical issues in any WSN are QoS and energy. Post deployment, it may not always be feasible to replace the batteries in a WSN. Long hops of transmission maintaining the QoS with more energy consumption results in reduction...
Avionics implementation with less cables will clearly improve the efficiency of aircraft while reducing weight and maintenance costs. To fulfill these emerging needs, an innovative avionics communication architecture, based on Gigabit Full Duplex Ethernet ring, is proposed in this paper. To adapt this COTS technology to safety-critical avionics, an adequate tuning process of the communication protocol...
a data center is a pool of resources such as computational, storage facilities, and servers interconnected using a communications network. The Data Center Networking (DCN) holds a pivotal role, and it needs to be scalable and efficient to connect the growing number of servers so as to handle the intensive demands in cloud computing. Recently there has been a rapidly growing literature on DCNs which...
Most African countries including Senegal face a deficit of doctors. This paper presents a new architecture at lower cost allowing the use of Access Point to pass the data from biosensors to the collects used in the field of medicine. The paper proposes a new QoS management prototype to put as priority traffic from biosensors at the expense of traffic from other types of clients in order to receive...
In this paper we analyzed suitability of different routing algorithms for establishing bandwidth-delay constrained traffic tunnels in SDN backbone networks. Bandwidth rejection ratio was used as indicator of algorithm's ability to efficiently utilize network resources. Through set of simulations on two real backbone topologies we showed that network topology can affect algorithm's performance, and...
This paper presents the application of QoS about a heterogeneous network based on DWDM transmission technique as core and having as edges two technology platforms, ATM and Ethernet applied QoS in residential services such as VoIP, video conferencing, digital television and data link high rates of transmission. With this design and implementation performance were performed measurements to services...
As (M2M) Machine-To-Machine, communication continues to grow rapidly, a full study on overload control approach to manage the data and signaling of H2H traffic from massive MTC devices is required. In this paper, a new M2M resource-scheduling algorithm for Long Term Evolution (LTE) is proposed. It provides Quality of Service (QoS) guarantee to Guaranteed Bit Rate (GBR) services, we set priorities...
Underwater sensor networks are gaining prominence in various applications of underwater monitoring and resource explorations. The minimum energy routing algorithms [2] are implemented in underwater oil resource explorations. The topologies already in use are wired where all sensor nodes behave as coordinator, except the PAN coordinator. This may increase the depletion of battery energy, and cost of...
Path length of a multi hop Ad Hoc networks has an adverse impact on the end-to-end throughput especially during network saturation. The success rate of forwarding packets towards destination is limited due to interference, contention, limited buffer space, and bandwidth. Real time applications streaming data fill the buffer space at a faster rate at the source and its nearby forwarding nodes since...
Newly, with the emergence of demanding applications e.g. multimedia applciations and its rapid prevalence on a large scale area e.g. urban environment. Supporting the scalability as well as satisfying QoS of demanding applications represent one of the main properties in urban environments. However, supporting applications and services in a such complex, distributed, large and diverse environment as...
We will demonstrate an innovative network topology aware holistic smart backhaul solution — Self-optimizing Wireless Mesh Network (SWMN), supporting a partial mesh wireless backhaul implementation that is not only highly resilient and scalable, but also equipped with advanced SON (Self-Organizing Network) capabilities offering autonomous network configuration and traffic engineering features.
The research trends in computer and wireless communication networks are growingly facilitated with the emergence of various Network Simulation tools. Network simulation software enables users to model network behavior demonstrating the packet transmission behavior and interaction amongst the nodes. These models are further used to analyze and predict the behavior of a computer network on various devices...
In recent years there has been a big increase in the number of network-related experiments using software defined networking (SDN) technology. We report on our practical experience over 2 years running network experiments on three classes of testbed facility, each supporting researchers working at a different innovation stage. We run experiments using the commercial Amazon EC2 cloud facility, pre-commercial...
In Machine-to-Machine (M2M) communication networks, the signalling congest and complexity for resource allocation is becoming one of the most important problems that should be dealt with the increasing of network scale. In this context, a clustering transmission strategy for the large-scale M2M networks has been proposed in this paper. To make the scheme can be carried out in distributed way, a joint...
This paper investigates dynamic topology management functionalities in the flexible deployment of a hybrid aerial-terrestrial cognitive cellular network for public safety in unexpected or temporary events. An evolutionary roll out and roll back of the network architecture in the disaster relief scenario is proposed under the assistant of topology management algorithm, in order to manage the number,...
Now a days as compare to power resources power demand grows and energy cost is also increasing at constant rate. To reduce power consumption in entire network infrastructure lots of research developed. In this approach the solution to save energy is explain. In this approach Energy Saving IP Routing strategy is define. ESIR strategy work with Open Shortest Path First protocol. This strategy is useful...
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