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In this work, we model route updates as part of Quality of Service (QoS) Virtual Network Function (VNF) in Software-Defined Networking (SDN) architecture. In SDN, the control plane and the data plane are decoupled. This allows high flexibility by providing abstractions for network management applications and being directly programmable. However, reconfiguration and updates of a network are sometimes...
Our objective in this paper is to improve the communications performance for IoT applications by proposing a new solution called IC-IoT (Improving Communication for IoT). The principle used is the exploitation of three existing communication protocol by incorporating some mechanisms to consider the different parameters which can cause the data loses. A probabilistic approach is used to know the impact...
Multiservice delivery is an important research issue in wireless sensor networks (WSNs) integrated with cloud computing, especially for heterogeneous applications which require reliable, timely and fair data delivery in adversarial environments. Therefore, both reliability requirements and delay constraints should be taken into account. Moreover, the delivery protocol should be designed to cater for...
This paper concerns the smart exploitation of multimodal communication capabilities of underwater nodes to enable reliable and swift underwater networking. To contrast adverse and highly varying channel conditions we define a smart framework enabling nodes to acquire knowledge on the quality of the communication to neighboring nodes over time. Following a model-based reinforcement learning approach,...
The exponential growth of internet traffic over the last twenty years presents a real challenge to ISP looking to ensure a reliable and efficient service to their customers. Network traffic is far from being straightforward to predict and a deep understanding of the routing domains is a first requirement to achieve proper management of the traffic. This paper focuses on the monitoring and characterisation...
In deep waters, both the natural acoustic systems (such as marine mammals) and artificial acoustic systems (like underwater sensor networks (UWSNs) and sonar users) use acoustic signals for communication, echolocation, sensing, and detection. This makes the channel spectrum, heavily shared by UWSNs posing several salient features such as narrow bandwidth, long propagation delay, and high packet loss...
Flow-Aware Networking (FAN), after a few years of limited interest becomes again a promising concept for the Future Internet. In this paper, we present an integrated approach to ensure efficient and reliable transmission in FAN. The proposed solution is based on the central controller, which enhances an operation of particular mechanisms which compose the integrated system. The key mechanisms of the...
Intelligent Transport Systems (ITS) and the open-ended research in the field of vehicular communication attempts to deal with the road traffic problems. In Vehicular Ad-Hoc Networks (VANETs), vehicles are moving faster in comparison with Mobile Ad-hoc Networks (MANETs). Furthermore, in urban VANETs, vehicles are constrained by the layout of the roads and buildings, which causes shadowing effects....
For mission-critical application of WSN, it's essential to guarantee multi-QoS requirements including of delay and reliability as far as possible. The existing multipath routing methods fulfill QoS demands by disseminating the redundant replica over multiple paths, leading to low energy efficiency and higher delay. In this paper, a novel Directional Transmission based QoS-aware Opportunistic Routing,...
Opportunistic Routing is a new routing paradigm in wireless ad-hoc networks. In this paradigm, the packets are routed with no fixed and predetermined next hop in the network. Broadcast nature of wireless medium is used in opportunistic routing and the next hop will be selected of the receivers of a packet. A problem that has still remained in opportunistic routing is congestion occurrence along the...
Traditional routing in the Internet is best-effort. Path differentiation including multipath routing is a promising technique to be used for meeting QoS requirements of media-intensive applications. Since different paths have different characteristics in terms of latency, availability and bandwidth, they offer flexibility in QoS and congestion control. Additionally protection techniques can be used...
Multipath interference or route coupling is a severe issue in multipath routing schemes of wireless sensor networks. Due to that, quality of data transmission is impossible in wireless sensor network (WSN) or heterogeneous wireless sensor network (HTWSN). Multipath routing is having many features over single path routing, but it is highly prone to multipath interference. The existing multipath routing...
Wireless Body Area Networks (WBANs) consists of biosensors which are used for health monitoring and diagnostic purposes. Moreover, the biosensors are constrained to the issue such as link quality, delay and multihop energy consumption. In order to overcome these issue an Optimized Fuzzy based Swarm Routing (OFSR) is proposed for WBAN. In this technique, first selection of best node is done based on...
The problem of path optimization and k disjoint pairs are important in survivable, QoS-aware communication network and SDN controlled networks. While the problem of optimally solving for maximally link-disjoint path pairs have always received a good level of attention, more work is needed with respect to k-maximally disjoint, multi-constrained, multiple QoS link weights route provisioning, and efficient...
Video traffic, which represents an increasing fraction of the Internet traffic, requires end-to-end quality of service (QoS) guarantees for inter-domain routing. However, providing such guarantees remains a challenge essentially because it requires a strong and fair cooperation among the different network operators or Autonomous Systems (ASes), crossed by the traffic. Having a single AS on the path...
The Intel® Omni-Path Architecture (Intel® OPA) is designed to enable a broad class of computations requiring scalable, tightly coupled CPU, memory, and storage resources. Integration between devices in the Intel® OPA family and Intel® CPUs enable improvements in system level packaging and network efficiency. When coupled with the new user-focused open standard APIs developed by the OpenFabrics Alliance...
Wireless sensor network (WSN) is formed by hundreds to thousands of nodes that communicate with each other updates information from time to time by passing data from one to another. This work aims to simultaneously improve the fidelity for high-integrity applications and decrease the end-to-end delay for delay-sensitive ones, even when the network is congested. To effective queue management, a queue...
Vehicular Ad Hoc Network (VANET) is a subclass of Mobile Ad Hoc Network (MANET). QoS routing protocols are fundamental part of VANETs that aim to provide services with guaranteed quality. Existing routing protocols of MANET can be applied to VANETs as well but they do not perform well under the dynamic conditions of VANETs such as, fast moving nodes and frequent disconnections in the network. In this...
Longest Prefix Matching in IP Address lookup remains a bottleneck for high-speed routers where large volumes of traffic at multi-gigabyte link speeds require extremely fast lookup time. By taking advantage of bitmap and hashing techniques effectively used in Tree Bitmap algorithm and Binary hash searching on prefix length algorithm we propose a hierarchical hashing scheme based on observations about...
Cloud service based on data center (DC) has become an attractive choice for abundant applications. Generally, DCs are distributed at different nodes across a given optical network, and users access DCs through predefined routes. From the perspective of service providers, it is important to offer reliable cloud service while taking service delay and service cost into consideration. In this paper, we...
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