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Flexible Uplink Scheduling Algorithm for VMR-WB VoIP Services in IEEE802.16e System

Flexible Uplink Scheduling Algorithm for VMR-WB VoIP Service...

引用

international conference on Wireless communications, networking and Mobile computing (WiCom)

作者： Farouk Y. M. Alkadhi Heng Dai Zheng Liu Min Yang Jufeng Dai School of Electronic Information Engineering Tianjin University TJU Tianjin China

This paper proposes a flexible uplink scheduling algorithm that can perfectly support Variable Multi-Rate Wide-Band (VMR-WB) VoIP services with multi-mode codec, solving the problems of uplink resources wastes, additional access delay and overwhelmingly large overhead. In our proposed algorithm, the BS adapts uplink resources assignment according to the reserved bit in the generic MAC header of IEEE802.16e, which is utilized to indicate the mode transition of each SS. Hence an efficient scheme is proposed to implement the uplink resource request and allocation procedure. The performance analysis of the conventional algorithms (UGS, rtPS and ertPS) as well as the one proposed in this paper is also provided. Through the numerical validations, proposed algorithm performs efficiently than the conventional algorithms over enhancement of resource utilization, total throughput, and reduction of packet transmission delay. Also, it is proved that our algorithm can support more voice users than the conventional algorithms.

关键词： Scheduling algorithm Quality of service Delay effects Wideband Resource management Performance analysis WiMAX Algorithm design and analysis Speech codecs communication system traffic control

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Investigation of Mutual Interference Channel with Relay in Cognitive Transmission

Investigation of Mutual Interference Channel with Relay in C...

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The 4th international conference on Wireless communications, networking and Mobile computing(第四届IEEE无线通信、网络技术及移动计算国际会议)

作者： Mingkang Cheng Jingli Mao Lee Li Beijing University of Posts and Telecommunications Intel Communication Technology Lab (Beijing) Intel Corporation

The current regulation of static spectrum distribution is a key factor that results in underutilization of fruitful wireless spectrum. Cognitive transmission must be predetermined to resolve the problems in the future network. In this paper, two kinds of cognitive channel, which are mutual interference cognitive channel with and without cognitive relay, will be modeled and analyzed. In mutual interference channel, the secondary system attempts to transmit its own data without degradation of primary system's performances. In cognitive relay channel, a relay is induced to improve throughput of the secondary system. Simulation results are presented to compare performance of both schemes.

关键词： Interference channels Relays Cognitive radio Throughput Radio transmitters Power system modeling Receivers Strontium communications technology Current control

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ML Framework for Wireless MAC Protocol Design

ML Framework for Wireless MAC Protocol Design

引用

Machine Learning for communication and networking (ICMLCN), IEEE international conference on

作者： Navid Keshtiarast Marina Petrova Mobile Communications and Computing RWTH Aachen University Aachen Germany

ISBN: (数字)9798350343199

ISBN: (纸本)9798350343205

Adaptivity, reconfigurability and intelligence are key features of the next-generation wireless networks to meet the increasingly diverse quality of service (QoS) requirements of the future applications. Conventional protocol designs, however, struggle to provide flexibility and agility to changing radio environments, traffic types and different user service requirements. In this paper, we explore the potential of deep reinforcement learning (DRL), in particular Proximal Policy Optimization (PPO), to design and configure intelligent and application-specific medium access control (MAC) protocols. We propose a framework that enables the addition, removal, or modification of protocol features to meet individual application needs. The DRL channel access policy design empowers the protocol to adapt and optimize in accordance with the network and radio environment. Through extensive simulations, we demonstrate the superior performance of the learned protocols over legacy IEEE 802.11ac in terms of throughput and latency.

关键词： Protocols Wireless networks Media Access control Quality of service Throughput Deep reinforcement learning Real-time systems

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advances in Medical Imaging: Deep Learning Strategies for Pneumonia Identification in Chest X-rays

Advances in Medical Imaging: Deep Learning Strategies for Pn...

引用

international conference on computing and networking Technology (ICCNT)

作者： Sadman Sadik Khan Afraz Ul Haque Rupak Washik Wali Faieaz Sayma Jannat Nuzhat Noor Islam Prova Amit Kumar Gupta Department of CSE Daffodil International University Dhaka Bangladesh Department of BBA North South University Dhaka India Department of Computer Applications KIET Group of institutions Delhi NCR Ghaziabad U.P India

ISBN: (数字)9798350370249

ISBN: (纸本)9798350370270

Pneumonia poses a widespread international fitness mission, in particular affecting prone populations which include youngsters and the elderly. Rapid and accurate analysis is crucial for powerful remedy and the prevention of severe outcomes. Chest X-rays (CXRs) are a fundamental diagnostic tool for pneumonia however decoding them may be time-eating and concern to variability. This paper introduces “advances in Medical Imaging,” a unique deep mastering gadget designed to enhance pneumonia detection from CXRs using convolutional neural networks (CNNs). Our device leverages state-of-the-art deep mastering fashions to investigate CXR pictures, considerably improving the accuracy and efficiency of pneumonia identification. In this version, highest accuracy became 97% which changed into achieved by using MobileNetV2. Through significant assessment, our technique has confirmed superior performance over traditional methods, supplying excessive accuracy, speed, and reliability. The “advances in Medical Imaging” system no longer most effective aids radiologists in diagnosing pneumonia greater efficaciously but additionally holds the capacity to alleviate the workload in healthcare settings, in particular in underserved regions. This work underscores the transformative impact of AI in medical diagnostics, paving the way for broader applications in healthcare.

关键词： Deep learning Pneumonia Accuracy Reliability Convolutional neural networks Artificial intelligence X-ray imaging Medical diagnostic imaging Faces Biomedical imaging

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Mobile gateway for Wireless Sensor Networks utilizing drones

Mobile gateway for Wireless Sensor Networks utilizing drones

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Roedunet international conference (RoEduNet)

作者： Ioan Deaconu Andrei Voinescu Automatic Control and Computers Faculty University Politehnica of Bucharest

Mobile Gateway for Wireless Sensor Networks utilizing drones Wireless Sensor Networks have good uses in applications running in remote locations, where maintenance is difficult. Wireless sensor network islands often need a connection with a gateway in order to communicate with the outside world, but this cannot be provided in all circumstances. A different approach to connecting wireless sensor networks is to use mobile gateways that can reach the remote locations where sensor devices are running. Our design includes a gateway mounted on an unmanned aircraft that collects data on its flight path.

关键词： Wireless sensor networks Unmanned aerial vehicles Logic gates Mobile communication Mobile computing Wireless communication Software

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Worst Case Sensitivity Analysis of controllers for Stock Consistency of Paper Machine Subsystem

Worst Case Sensitivity Analysis of Controllers for Stock Con...

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advances in computing, communication & Materials (ICACCM), 2020 international conference on

作者： Parvesh Saini Pradeep Kumar Juneja Rajesh Kumar Ashutosh Dixit Graphic Era Deemed to be University Dehradun G.B Pant Institute of Engg. & Technology Ghurdauri Pauri

ISBN: (数字)9781728197852

ISBN: (纸本)9781728197869

A robustness analysis of the control system, designed for the stock consistency of the paper machine subsystem, using PSO based conventional controllers has been presented in this paper. The robustness of the designed control system has been assessed through worst case sensitivity analysis. The subsystem taken into consideration for this work is the headbox. Tuning parameters of conventional PI and PID controllers have been determined through FL-PSO algorithm. Worst case sensitivity has been assessed by evaluating the peak values of sensitivity function and complementary sensitivity function for the perturbed consistency models. The aforesaid peak values have been determined through MATLAB. A comparative analysis of both PI and PID controllers for all five stock consistency models have also been presented. From the comparative analysis, it has been observed that the PI controller exhibits better robustness as compared to PID controller.

关键词： Robustness control systems Sensitivity Bandwidth Tuning Process control Transfer functions

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Achieving fairness in distributed scheduling in wireless ad-hoc networks

Achieving fairness in distributed scheduling in wireless ad-...

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IEEE international conference on Performance, computing and communications (IPCCC)

作者： A.K. Somani Jianwei Zhou Dependable Computing & Networking Laboratory Department of Electrical and Computer Engineering Iowa State University Ames IA USA

Fairness is an important design criterion for medium access control protocol in multihop wireless networks. It is a complex problem due to its many dimensions that include consideration of location-dependent contention, spatial reuse of channels, and desire to achieve fully distributed scheduling in the wireless communication systems. This paper presents a localized and fully distributed algorithm with fair scheduling in multihop wireless networks. The proposed algorithm incorporates start time fair queuing (STFQ) into the distributed coordination function (DCF) in IEEE 802.11. Our algorithm accounts for the services that have already been received by the sender to adjust the backoff timer to ensure that every flow gets a fair service. We propose a simple data structure that every node (sender or receiver) needs to maintain and an update mechanism that achieves fairness. We illustrate through simulations that the proposed algorithm achieves the desired fairness.

关键词： Intelligent networks Ad hoc networks Spread spectrum communication Wireless networks Job shop scheduling Access protocols Media Access Protocol Wireless application protocol Personal digital assistants Computer networks

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Cyber security threats in industrial control systems and protection

Cyber security threats in industrial control systems and pro...

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international conference on advances in computing and communication Engineering (ICACCE)

作者： Mounesh Marali Sithu D Sudarsan Ashok Gogioneni IA Control Technologies ABB India Development Center India ABB Corporate Research India

ISBN: (数字)9781728132501

ISBN: (纸本)9781728132518

Industrial automation and control systems are increasingly based on open communication protocols and platforms that are also commonly used in corporate IT environments and interconnected to enable integration with business applications, they become increasingly exposed to the internet. As seen in the past with WannaCry and NotPetya, it's more likely common malware will cause the most damage in the long run. These threats are expected to increase simply since the fundamental gaps in protecting the operational technology (OT) over information technology (IT) widening. As OT becomes increasingly exposed to internet, it tends to become weak spot to cyber threats as any other connected systems. This is basically because of OT components aligned on the same hardware, software, communication protocols including operating systems that run IT components, such as networks, client, server machines & other connected devices. At the same time, reusable development and deployment of interconnected systems and their communication networks become vulnerable to cyber-attacks. This paper explores cyber security issues in industrial control systems that are built on open communication platforms and networks. Specially emphasized on attacker's objectives, electronics methods and possible countermeasures for IT systems. The paper also describes various OT security-relevant characteristics distinct from the office IT systems and relevant implementation approaches at multiple system layers to protect from cyber-attacks. Finally, paper illustrates few application level security concepts with case studies focusing configuration and operation of industrial process control system.

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Characterizing and Evaluating Interference in Multi-Interface Wireless Mesh Networks

Characterizing and Evaluating Interference in Multi-Interfac...

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international conference on communications and networking in China (CHINACOM)

作者： Yunxia Feng Minglu Li Min-You Wu Ling Ding Department of Computer Science & Engineering Shanghai Jiaotong University Shanghai China

Interference is a key factor that impacts the performance of wireless networks, especially when each node is equipped with multiple interfaces. Based on the classification criterion presented in this paper, we classify current interface assignment strategies into three types: static, dynamic and hybrid. We mainly address the problems of characterizing and evaluating interference effects of static strategy and two hybrid strategies in multi-interface wireless mesh networks. We prove that, if all links are bi-directional, both hybrid strategies described have identical interference characteristics. We derive formula for computing interference node set and channel interference possibility respectively. We also present an extensive evaluation via NS2 simulations. Compared to static strategy, the hybrid strategy yields more throughputs, higher traffic fairness and faster adaptation to traffic changes.

关键词： Interference Wireless mesh networks communication switching Switches Wireless networks Protocols Bidirectional control Computational modeling Telecommunication traffic Traffic control

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Link Tone Home Automation

Link Tone Home Automation

引用

international conference on computing and networking Technology (ICCNT)

作者： R. Jegadeesh Kumar M. Lohith S. Navienvijayaraj S. Vignesh D. Akash Department of EEE Karpagam College of Engineering Coimbatore India

ISBN: (数字)9798350370249

ISBN: (纸本)9798350370270

The topic of this essay is remotely operating household appliances from any location in the globe. This makes it easier for those with physical disabilities to use their phones to control household equipment. There’s a chance that you might occasionally forget to turn off your home appliances, wasting electricity. Therefore, To address the above described problem, dual tone multiple frequency controlled home automation is the solution. The DTMF-based automation is run by the mobile signals. The DTMF approach may be used to link the DTMF decoder to the relay that is controlled by the mobile phone by making a call to the other phone that is connected to the *** a result, mobile phones and DTMF decoder output allow for the control of household appliances without the need for microcontrollers. The seamless combination of mobile phones, relay controlled appliances, and DTMF technology is a state of the art solution that enables people all over the world to effectively manage their homes while also encouraging accessibility and energy conservation.

关键词： Home appliances Home automation Transmitters Cellular phones Switches control systems Mobile handsets Decoding Security Relays

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