The Experts below are selected from a list of 132252 Experts worldwide ranked by ideXlab platform

Harish Viswanathan - One of the best experts on this subject based on the ideXlab platform.

  • exploiting diversity for ultra reliable and low latency wireless control
    IEEE Transactions on Wireless Communications, 2021
    Co-Authors: Saeed R Khosravirad, Harish Viswanathan
    Abstract:

    This paper introduces a wireless communication protocol for industrial control systems that uses channel quality awareness to dynamically create Network-Device cooperation and assist the nodes in momentary poor channel conditions. To that point, channel state information is used to identify nodes with strong and weak channel conditions. We show that strong nodes in the Network are best to be served in a single-hop transmission with transmission rate adapted to their instantaneous channel conditions. Meanwhile, the remainder of time-frequency resources is used to serve the nodes with weak channel condition using a two-hop transmission with cooperative communication among all the nodes to meet the target reliability in their communication with the controller. We formulate the achievable multi-user and multi-antenna diversity gain in the low-latency regime, and propose a new scheme for exploiting those on-demand , in favor of reliability and efficiency. The proposed transmission scheme is therefore dubbed adaptive Network-Device cooperation (ANDCoop), since it is able to adaptively allocate cooperation resources while enjoying the multi-user diversity gain of the Network. We formulate the optimization problem of associating nodes to each group and dividing resources between the two groups. Numerical solutions show significant improvement in spectral efficiency and system reliability compared to the existing schemes in the literature. System design incorporating the proposed transmission strategy can thus reduce infrastructure cost for future private wireless Networks.

  • adaptive Network Device cooperative diversity for ultra reliable and low latency wireless control
    Vehicular Technology Conference, 2019
    Co-Authors: Saeed R Khosravirad, Harish Viswanathan
    Abstract:

    Wireless motion control in the next generation of industrial control systems aims to provide the sensor/actuator Devices on a factory floor with continuous closed-loop control updates from the controller entity, requiring communications with extremely low latency in the order of sub-ms and "cablelike" high reliability. This paper introduces a wireless communication protocol that uses channel state information (CSI) and cooperative communication among the Devices to best utilize the radio resources and provide an ultra-reliable radio access. We propose to use CSI to identify Devices with strong and weak channel conditions. We show that strong Devices in the Network are best to be served in a single-hop transmission with transmission rate adapted to their instantaneous channel conditions. Meanwhile, the remainder of time-frequency resources is used to serve the Devices with weak channel condition, using a two-hop transmission with cooperative relaying. We formulate the optimization problem of partitioning time budget between the two groups and associating Devices to each group. Numerical solution to the optimization problem and simulation results are provided. Thanks to combining multi-user diversity gain together with cooperative relaying, the proposed solution provides orders of magnitude improvement in system reliability, resulting in more than 10 dB signal to noise ratio (SNR) gain at 10−5 system outage probability point, with respect to state-of-the-art protocols.

Tulloh Rohmat - One of the best experts on this subject based on the ideXlab platform.

  • Analisis Performansi Agregasi Link dengan Lacp pada SDN menggunakan RYU sebagai Controller
    'Perpustakaan Universitas Andalas', 2017
    Co-Authors: Tulloh Rohmat
    Abstract:

    As time goes by, the world of communication has flourished quickly, especially in Network. One of the Network technologies by now called SDN (Software Defined Network), is a new paradigm in Network technology that is able to virtualize Network Device by taking the function of control plane, that is usually taken by controller, and separate between control plane and data plane into a Network Device. Besides the coming of that new paradigm, the need of bandwidth consumption on data communication by this time has increased. Link aggregation is a method that combines several physical links into a logical link in the form of multiplying the bandwidth capacity. Link aggregation can be implemented in SDN Network, that makes bandwidth consumption in Network has good effect on service quality. In this research, the writer will show the comparison analysis between link aggregation and not using link aggregation in SDN Network. This comparison analysis is done by analyzing some parameters, like throughput, packetloss, jitter and fault tolerance from the service in Network, called video streaming.Keywords : SDN, Link aggregation, LACP, Redundansi, Bandwith.AbstrakDunia telekomunikasi saat ini berkembang dengan sangat pesat terutama dalam dunia jaringan. Salah satu teknologi jaringan masa kini adalah SDN (Software Defined Network) yaitu sebuah paradigma baru dalam teknologi jaringan yang dapat memvirtualisasi perangkat jaringan dengan mengambil fungsi control plane oleh controller dan memisahkan antara control plane dengan data plane dalam sebuah perangkat jaringan. Selain adanya paradigma baru tersebut, kebutuhan akan konsumsi bandwidth dalam komunikasi data saat ini juga meningkat. Link aggregation merupakan metode penggabungan link fisik menjadi satu link logis guna meningkatkan kapasitas bandwidth. Link aggregation dapat di implementasikan dalam jaringan SDN, hal ini membuat konsumsi sejumlah bandwidth pada jaringan berdampak baik terhadap kualitas layanan pada jaringan. Dalam penelitian ini, ditunjukkan analisis perbandingan terhadap jaringan SDN yang menggunakan metode link aggregation dengan jaringan SDN yang tanpa metode link aggregation. Analisis ini memperhatikan hasil pengukuran throughput, packet loss, jitter dan fault tolerant dari layanan video streaming pada jaringan.Kata Kunci : SDN, Link aggregation, LACP, Redundansi, Bandwith

Saeed R Khosravirad - One of the best experts on this subject based on the ideXlab platform.

  • exploiting diversity for ultra reliable and low latency wireless control
    IEEE Transactions on Wireless Communications, 2021
    Co-Authors: Saeed R Khosravirad, Harish Viswanathan
    Abstract:

    This paper introduces a wireless communication protocol for industrial control systems that uses channel quality awareness to dynamically create Network-Device cooperation and assist the nodes in momentary poor channel conditions. To that point, channel state information is used to identify nodes with strong and weak channel conditions. We show that strong nodes in the Network are best to be served in a single-hop transmission with transmission rate adapted to their instantaneous channel conditions. Meanwhile, the remainder of time-frequency resources is used to serve the nodes with weak channel condition using a two-hop transmission with cooperative communication among all the nodes to meet the target reliability in their communication with the controller. We formulate the achievable multi-user and multi-antenna diversity gain in the low-latency regime, and propose a new scheme for exploiting those on-demand , in favor of reliability and efficiency. The proposed transmission scheme is therefore dubbed adaptive Network-Device cooperation (ANDCoop), since it is able to adaptively allocate cooperation resources while enjoying the multi-user diversity gain of the Network. We formulate the optimization problem of associating nodes to each group and dividing resources between the two groups. Numerical solutions show significant improvement in spectral efficiency and system reliability compared to the existing schemes in the literature. System design incorporating the proposed transmission strategy can thus reduce infrastructure cost for future private wireless Networks.

  • adaptive Network Device cooperative diversity for ultra reliable and low latency wireless control
    Vehicular Technology Conference, 2019
    Co-Authors: Saeed R Khosravirad, Harish Viswanathan
    Abstract:

    Wireless motion control in the next generation of industrial control systems aims to provide the sensor/actuator Devices on a factory floor with continuous closed-loop control updates from the controller entity, requiring communications with extremely low latency in the order of sub-ms and "cablelike" high reliability. This paper introduces a wireless communication protocol that uses channel state information (CSI) and cooperative communication among the Devices to best utilize the radio resources and provide an ultra-reliable radio access. We propose to use CSI to identify Devices with strong and weak channel conditions. We show that strong Devices in the Network are best to be served in a single-hop transmission with transmission rate adapted to their instantaneous channel conditions. Meanwhile, the remainder of time-frequency resources is used to serve the Devices with weak channel condition, using a two-hop transmission with cooperative relaying. We formulate the optimization problem of partitioning time budget between the two groups and associating Devices to each group. Numerical solution to the optimization problem and simulation results are provided. Thanks to combining multi-user diversity gain together with cooperative relaying, the proposed solution provides orders of magnitude improvement in system reliability, resulting in more than 10 dB signal to noise ratio (SNR) gain at 10−5 system outage probability point, with respect to state-of-the-art protocols.

Rohmat Tulloh - One of the best experts on this subject based on the ideXlab platform.

  • Analisis Performansi Agregasi Link dengan Lacp pada SDN menggunakan RYU sebagai Controller
    Universitas Andalas, 2018
    Co-Authors: Rohmat Tulloh
    Abstract:

    — As time goes by, the world of communication has flourished quickly, especially in Network. One of the Network technologies by now called SDN (Software Defined Network), is a new paradigm in Network technology that is able to virtualize Network Device by taking the function of control plane, that is usually taken by controller, and separate between control plane and data plane into a Network Device. Besides the coming of that new paradigm, the need of bandwidth consumption on data communication by this time has increased. Link aggregation is a method that combines several physical links into a logical link in the form of multiplying the bandwidth capacity. Link aggregation can be implemented in SDN Network, that makes bandwidth consumption in Network has good effect on service quality. In this research, the writer will show the comparison analysis between link aggregation and not using link aggregation in SDN Network. This comparison analysis is done by analyzing some parameters, like throughput, packetloss, jitter and fault tolerance from the service in Network, called video streaming

M. Ma - One of the best experts on this subject based on the ideXlab platform.

  • A SIP-based OSGi Device communication service for mobile personal area Networks
    CCNC 2006. 2006 3rd IEEE Consumer Communications and Networking Conference 2006., 2006
    Co-Authors: Alan Brown, Mario Kolberg, G. Lomako, Dennis Bushmitch, M. Ma
    Abstract:

    This paper discusses the benefits of a proposed Session Initiation Protocol (SIP)-based Device communication Service for deployment on a Mobile Open Services Gateway Initiative (OSGi) framework. Mobile OSGi deployment provides a gateway to a mobile user’s Personal Area Network (PAN). When the SIP Service is deployed in OSGi, it is possible to bridge multiple Devices and gateways, offering Device and service mobility as users traverse multiple mobile and home Networks. Additionally, the SIP Service provides protocol bridging via bridging bundles and grants application layer mobility to OSGi services. In this paper, we discuss a novel architecture, based on the deployment of the SIP Service in a mobile OSGi framework, which effectively delivers PAN and home Network Device interoperability. Finally, we offer a use case scenario and analysis of its implementation using our proposed architecture.