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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...
We consider the effective bandwidth (EB) estimation in the networks with the regenerative input. Based on the Lindley's-type recursion for the workload process in discrete and continuous time, we apply a large deviation approach to construct a regenerative estimate of the required EB in the nodes of tandem queuing networks. Simulation shows that the regenerative estimator overestimates the EB, while...
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...
As we move towards packet switched based multimedia wireless cellular networks supporting different kinds of applications, QoS guarantee for such applications will be challenging tasks. This article makes a brief review of several techniques for QoS provisioning in wireless cellular network‥ These techniques are classified into five categories: call admission control and bandwidth reservation, buffer...
In this work, we establish a general framework for investigating statistical QoS provisioning in mobile ad hoc networks. Though the throughput and average delay in wireless ad hoc works have been has been intensively studied in the literature, statistical delay guarantee provisioning in large scale ad hoc networks has not received enough attention. A realtime application, e.g., interactive game and...
The idea of the future Internet of Services is to combine several services of numerous service providers to new value-added services or applications. To sell these services on so-called service marketplaces the providers have to ensure both a high quality and a high quality reliability. But how could a provider of a composed service know the quality-reliability of his service without costly tests?...
Wireless sensor nodes are widely used in many areas, including military operation surveillance, natural phenomenon monitoring, and medical diagnosis data collection. These applications need to store and transmit sensitive or secret data, which requires intrusion detection mechanisms be deployed to ensure sensor node health, as well as to maintain quality of service and survivability. Because wireless...
Wireless sensor networks are limited in energy. Any routing protocol used in wireless sensor networks should take into consideration the time sensitive nature of the traffic in such networks, along with the amount of energy left for each sensor. In this paper we present an energy aware packet delivery mechanism for probabilistic quality of service (QoS) guarantee in wireless sensor networks. Each...
Grid computing is an emerging computing paradigm that will have significant impact on the next generation information infrastructure. Due to the largeness and complexity of grid system, its quality of service, performance and reliability are difficult to model, analyze and evaluate. In real time evaluation, various noises will influence the model and which in turn accounts for increase in packet loss...
Currently, there is very little research that aims at handling QoS requirements using multipath routing in a very energy constrained environment like sensor networks. In this paper, energy efficient fault-tolerant multipath routing technique which utilizes multiple paths between source and the sink. has been proposed. This protocol is intended to provide a reliable transmission environment with low...
To the workflow scheduling of DAG-based workflow in which time constraints are rigid, a new algorithm based on the model of resource state reliability was put forward. According to the requirement of the workflow execution time submitted by users, the algorithm found critical paths and obtained the probability for all resources being the idle state at the time when the task arrives by using Chapman-Kolmogorov...
Wireless sensor networks are increasingly being used in applications where QoS and low cost are the overriding considerations. Conventional schemes of using sensor nodes and incorporating these three phenomena (reliability, availability and serviceability) to attain QoS can effectively improve not only the reliability of the overall WSNs but security as well. We discuss the reverse look of QoS and...
The majority of todaypsilas infrastructures are vulnerable to various disruptions that affect their essential services. Consequently, different research programs have been aiming at lowering such disruptions. In fact, the problem of designing systems with dependability, reliability, or security characteristics has long been acknowledged as an area for further research, and has received a substantial...
In this paper we derive optimal power allocation scheme that minimizes bit error rate (BER) while satisfying the average power constraint and peak to average power ratio (PAPR) constraint (which translates to minimizing the PAPR). The power allocation is done in space and time for multiple-input single-output (MISO) systems over Rayleigh flat fading channels assuming perfect channel state information...
QoS routing in WiFi P2P networks is the process of selecting a path to be used by peers based on their QoS requirements, such as bandwidth or delay. Existing QoS routing solutions provide an effective way of dealing with path selection; however, even though there exist paths with more available capacity or better reliability, these paths are not taken into consideration. In this paper we propose algorithms...
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