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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,...
Sensor technologies are vital today in gathering information about certain environments and Wireless Sensors Networks (WSNs) are getting more widespread use every day. The recent advances in Wireless Sensor Networks open new scenarios where sensors can be rapidly deployed without any existing infrastructure. Such networks are useful in many fields, such as smart grid, smart water networks, intelligent...
This paper assesses the effect of a reliable groupcast scheme on QoE of audio and video multicast transmission over a wireless LAN. We assume that a wireless access point transmits audio and video streams from a server on a wired network to several terminals connected to the access point. We compare the three schemes: unicast, groupcast without reliability, and LBP (Leader Based Protocol). A computer...
As the use of web services are increasing rapidly, it is very essential to ensure the quality of the invoked service. From Quality of Service (QoS) factors, reliability is the most predominant factor. QoS can be referred as matching network resources to application demands which in turn helps to keep the service reliable. Reliability is a general quality of a system. It is the probability that a system...
Novel applications running over wireless networks are currently emerging, and concrete examples are Vehicle Ad Hoc Networks, Internet of Things or Multimedia Streaming. Such applications are characterized by multicast communication patterns, and a serious vulnerability to packet loss patterns, which are severe when radio frequency signals are used for communicating. Therefore, reliable multicasting...
Ensuring end-to-end quality of service for video applications requires the network to choose the most feasible path in terms of bandwidth, delay and jitter. Quality of service can only be ensured if the paths are reliable — perform to specification per request. This paper makes four contributions to research. First, it presents Reliable Video over Software-Defined Networking (RVSDN) which builds upon...
In practically all network flow problems, attaining the desired quality of service (QoS) while maintaining minimum possible transmission time is one of the most important challenges. Since most of these networks are stochastic in nature, ensuring QoS becomes a major concern, especially when the network maintenance cost is also required to be kept low. Lin [25] has recently proposed a system reliability...
Several solutions have been proposed for improving the Quality of Service (QoS) in wireless cellular networks, such as Call Admission Control (CAC) and handover strategies. However, none of them considers the usage of different interfaces for different conditions. In this work, apart from using only Base Stations (BSs) as an important device of cellular networks, we propose a multi-interface approach...
Avionics Full Duplex Switched Ethernet (AFDX) is a new data network standard for modern avionics systems. Avionics systems are typical mixed criticality systems, where safety-critical and non-safety-critical applications co-exist. Traditional AFDX leverages best-effort redundant transmissions for flows to improve the communication reliability, resulting in the increase of end-to-end delays with weak...
Supporting Quality of Service (QoS) in WSNs is still a largely unexplored research field. The commonly accepted QoS metrics include bandwidth, delay, delay jitter and reliability. Besides, whereas the majority of developed applications for WSNs are event-critical applications, achieving reliable data transfer as the main factor of dependability and quality of service seems vital. In this paper, we...
This paper presents a reliable scalable video multi-cast with source diversity and inter-source network decoding in lossy networks. The source diversity technique gives path diversity providing a better quality of layered video transmission under hostile environments. For each source, an optimization formulation is set up to find the best transmission route of each transmitting video layer. The objectives...
Reliability has become a major quality metric for Web service. However, current reliability evaluation approaches lack a formal semantic representation and the support of incomplete or uncertain information. We propose a Web service reliability ontology (WSRO) serving as a basis to characterize the knowledge of Web service. And based on WSRO, a mapping to the probability graphical model is constructed...
Home area networks (HANs) consisting of wireless sensors have emerged as the enabling technology for important applications such as smart energy. These applications impose unique QoS constraints, requiring low data rates but high network reliability in the face of unpredictable wireless environments. This paper presents two in-depth empirical studies on wireless channels in real homes, providing key...
A mobile agent is a particular agent with the ability to migrate from one host to another where it can resume its execution. Mobile agents can be used to save bandwidth and time in wireless and mobile network applications. In this paper we consider reliability issues that need to be addressed before mobile agents can be used for a broad range of commercial applications in mobile adhoc network (MANET)...
Future WSNs are expected to carry different traffic such as voice and video as well as data to serve both real and non-real time applications. Therefore, the reliability and quality of the data delivered to support diverse applications is very important. Also, service differentiation is an essential component of QoS that should be supported by routing protocols. In this paper, we introduce a novel...
This work aims to shows how to use the base principles of a CDN (Content Delivery Network) to deliver Video Content through Open Internet for VoD (Video on Demand) service through a managed network to improve the reliability and to reduce the degradation due to congestion in the backbone area. The managed network is achieved by means of the VPLS (Virtual Protocol Lan Service) technique that allows...
CORBA Notification Service extends Event Service with new characteristics of structured event, communication reliability, filter mechanism, QoS and so on. It makes CORBA have more message-oriented middleware features, and provides better assurance for the communication process. This paper illustrates some new characteristics of CORBA Notification Service. A filter mechanism is proposed to implement...
We propose a decentralized Peer-to-Peer (P2P) Video-on-Demand (VoD) system. The traditional data center architecture is eliminated and is replaced by a large set of distributed, dynamic and individually unreliable helpers. The system leverages the strength of numbers to effect reliable cooperative content distribution, removing the drawbacks of conventional data center architectures including complexity...
IP networks have come of age. They are increasingly replacing leased-line data infrastructure and traditional phone service, and are expected to offer Public Switched Telephone Network (PSTN)-quality service at a much lower cost. As a result, there is an urgent interest in assuring IP network security, reliability, and Quality of Service (QoS). In fact, regulators are now requiring compliance with...
Multipath routing protocols (MRP) help improve the network quality of service (QoS), including load balancing, fault tolerance (reliability), aggregate bandwidth and delay. While multipaths communication provides better failure-tolerance, their resilience only holds if the multiple paths are selected carefully. Note that selecting an optimal path set is a NP-complete problem. Recently, several algorithms...
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