The Experts below are selected from a list of 2289 Experts worldwide ranked by ideXlab platform

Christian Wietfeld - One of the best experts on this subject based on the ideXlab platform.

  • Distributed Flow Permission Inspection for Mission-Critical Communication of Untrusted Autonomous Vehicles
    2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), 2014
    Co-Authors: Katharina Siobhan Kohls, Daniel Behnke, Christian Wietfeld
    Abstract:

    Swarms of Unmanned Aerial Vehicles (UAVs) and Unmanned Ground Vehicles (UGVs) are used for cooperative sensing, clarification and Communication relaying in disaster situations and, thereby, allow to reduce jeopardizing the health of rescue personnel. Having meshed interconnection, a swarm maintains a Communication network dedicated for applications with context-dependent performance requirements that require reliable traffic classification and conditioning. Nevertheless, these systems are vulnerable because UAVs/UGVs may act incorrectly resulting in an erroneous network behavior which may affect the performance of mission-Critical flows. This is a major problem if a couple of untrusted UAVs and UGVs from different rescue organizations are connected. In this paper, the reliability of traffic conditioning within untrusted swarms is enhanced by the Distributed Flow Permission Inspection (DiFPIN) scheme. DiFPIN is used to verify the flow classification to circumvent the usage of erroneous entities on the transmission path. Thereby, the negative impairment of mission-Critical flows can be reduced.

  • INFOCOM Workshops - Performance evaluation of time-Critical Communication networks for Smart Grids based on IEC 61850
    2013 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2013
    Co-Authors: Hanno Georg, Markus Putzke, Nils Dorsch, Christian Wietfeld
    Abstract:

    Driven by the increasing application of Smart Grid technologies in today's power systems, Communication networks are becoming more and more important for exchanging monitoring, control and protection information on local and wide area level. For Communication the IEC 61850 standard is a candidate for the Smart Grid and has been introduced for Substation Automation Systems (SAS) some years ago. IEC 61850 provides interoperability among various manufactures and enables systemwide Communication between intelligent components of future power systems. However, as IEC 61850 addresses Ethernet (ISO/IEC 8802-3 family) as network technology, especially high performance aspects of Ethernet have become increasingly important for time-Critical Communication within substation automation systems. In this paper we introduce the generic architecture of IEC 61850 and present our modelling approach for evaluating high performance and real-time capability of Communication technologies for future smart grid application. First, we give a short overview of the IEC 61850 protocol and present Communication flows in substation automation systems according to the standard. Here we focus on substation automation at bay level, located inside an exemplary substation node taken from the IEEE 39-bus power system network. Afterwards we demonstrate our modeling approach for Communication networks based on IEC 61850. For performance evaluation we developed a simulation model along with an analytical approach on basis of Network Calculus, enabling to identify worst case boundaries for intra-substation Communication. Finally results for simulative and analytical modelling are provided and cross validated for two bay level scenarios, showing the applicability of Network Calculus for real-time constrained smart grid Communication.

  • Performance evaluation of time-Critical Communication networks for Smart Grids based on IEC 61850
    2013 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2013
    Co-Authors: Hanno Georg, Markus Putzke, Nils Dorsch, Christian Wietfeld
    Abstract:

    Driven by the increasing application of Smart Grid technologies in today's power systems, Communication networks are becoming more and more important for exchanging monitoring, control and protection information on local and wide area level. For Communication the IEC 61850 standard is a candidate for the Smart Grid and has been introduced for Substation Automation Systems (SAS) some years ago. IEC 61850 provides interoperability among various manufactures and enables systemwide Communication between intelligent components of future power systems. However, as IEC 61850 addresses Ethernet (ISO/IEC 8802-3 family) as network technology, especially high performance aspects of Ethernet have become increasingly important for time-Critical Communication within substation automation systems. In this paper we introduce the generic architecture of IEC 61850 and present our modelling approach for evaluating high performance and real-time capability of Communication technologies for future smart grid application. First, we give a short overview of the IEC 61850 protocol and present Communication flows in substation automation systems according to the standard. Here we focus on substation automation at bay level, located inside an exemplary substation node taken from the IEEE 39-bus power system network. Afterwards we demonstrate our modeling approach for Communication networks based on IEC 61850. For performance evaluation we developed a simulation model along with an analytical approach on basis of Network Calculus, enabling to identify worst case boundaries for intra-substation Communication. Finally results for simulative and analytical modelling are provided and cross validated for two bay level scenarios, showing the applicability of Network Calculus for real-time constrained smart grid Communication.

Stuart D. Walker - One of the best experts on this subject based on the ideXlab platform.

  • Ultra-High-Definition Video Transmission for Mission-Critical Communication Systems Applications
    Research Anthology on Recent Trends Tools and Implications of Computer Programming, 2020
    Co-Authors: Anthony Olufemi Tesimi Adeyemi-ejeye, Geza Koczian, Mohammed Abdulrahman Alreshoodi, Michael C. Parker, Stuart D. Walker
    Abstract:

    With the standardization of ultra-high-definition formats and their increasing adoption within the multimedia industry, it has become vital to investigate how such a resolution could impact the quality of experience with respect to mission-Critical Communication systems. While this standardization enables improved perceptual quality of video content, how it can be used in mission-Critical Communications remains a challenge, with the main challenge being processing. This chapter discusses the challenges and potential solutions for the deployment of ultra-high-definition video transmission for mission-Critical applications. In addition, it examines the state-of-the-art solutions for video processing and explores potential solutions. Finally, the authors predict future research directions in this area.

  • Ultra-High-Definition Video Transmission for Mission-Critical Communication Systems Applications: Challenges and Solutions
    Advances in Wireless Technologies and Telecommunication, 2020
    Co-Authors: Anthony Olufemi Tesimi Adeyemi-ejeye, Geza Koczian, Mohammed Abdulrahman Alreshoodi, Michael Parker, Stuart D. Walker
    Abstract:

    With the standardization of ultra-high-definition formats and their increasing adoption within the multimedia industry, it has become vital to investigate how such a resolution could impact the quality of experience with respect to mission-Critical Communication systems. While this standardization enables improved perceptual quality of video content, how it can be used in mission-Critical Communications remains a challenge, with the main challenge being processing. This chapter discusses the challenges and potential solutions for the deployment of ultra-high-definition video transmission for mission-Critical applications. In addition, it examines the state-of-the-art solutions for video processing and explores potential solutions. Finally, the authors predict future research directions in this area.

Khalid Al-begain - One of the best experts on this subject based on the ideXlab platform.

  • Scalability and Performance Analysis of SIP based Multimedia Services over Mission Critical Communication Systems
    International Journal of Interactive Communication Systems and Technologies, 2020
    Co-Authors: Khalid Al-begain, Andrew Ware
    Abstract:

    Various studies have suggested enhancing the performance of large-scale systems, such as mission Critical Communication systems (MCCSs). However, few have modelled and evaluated the performance of such systems in a way that targets overall system performance in real time. Moreover, it is not enough to define the Key Performance Indicators (KPIs) for a system without using them for system performance measurement and performance evaluation. The Session Initiation Protocol (SIP) and IP Multimedia Subsystem (IMS) both have a set of KPIs, such as the registration process delay, that can be used to measure and thus optimize overall system performance. This article articulates different options for system simulation and evaluation. The registration process affects performance and reflects the overall system performance. The article shows how the registration process is delayed and how the overall system scalability are negatively impacted by system overload.

  • NGMAST - Evaluating SIP Signaling Performance for VoIP over LTE Based Mission-Critical Communication Systems
    2015 9th International Conference on Next Generation Mobile Applications Services and Technologies, 2015
    Co-Authors: Mazin I. Alshamrani, Alhad Kuwadekar, Khalid Al-begain
    Abstract:

    Mission Critical Communications and Services are of a special nature that needs special requirements. Therefore, there are many challenges that face implementing mission Critical Communication system over commercial mobile Communications networks. Signaling of SIP messages in the access technology domain and IMS domain needs enhancement to ensure meeting the mission Critical service requirements. LTE, as a broadband technology that is widely deployed nowadays for providing 4G Communication networking services, is facing a lot of challenges in terms of its ability to provide multimedia services. And due to the special nature of Mission Critical Systems (MCS) that have stringent requirements for SIP signaling specifically, the need for investigating the SIP signaling performance over LTE based MCS is of great importance. In this paper, the performance metrics for an SIP signaling over LTE-MCS will be defined, and the overall system performance measures were evaluated via discrete event simulator.

  • Evaluating SIP Signaling Performance for VoIP over LTE Based Mission-Critical Communication Systems
    2015 9th International Conference on Next Generation Mobile Applications Services and Technologies, 2015
    Co-Authors: Mazin Alshamrani, Alhad Kuwadekar, Khalid Al-begain
    Abstract:

    Mission Critical Communications and Services are of a special nature that needs special requirements. Therefore, there are many challenges that face implementing mission Critical Communication system over commercial mobile Communications networks. Signaling of SIP messages in the access technology domain and IMS domain needs enhancement to ensure meeting the mission Critical service requirements. LTE, as a broadband technology that is widely deployed nowadays for providing 4G Communication networking services, is facing a lot of challenges in terms of its ability to provide multimedia services. And due to the special nature of Mission Critical Systems (MCS) that have stringent requirements for SIP signaling specifically, the need for investigating the SIP signaling performance over LTE based MCS is of great importance. In this paper, the performance metrics for an SIP signaling over LTE-MCS will be defined, and the overall system performance measures were evaluated via discrete event simulator.

  • IP Multimedia Subsystem SIP Registration Signaling Evaluation for Mission Critical Communication Systems
    2015 IEEE International Conference on Data Science and Data Intensive Systems, 2015
    Co-Authors: Alhad Kuwadekar, Khalid Al-begain
    Abstract:

    The performance of IMS affect mission Critical applications which has a strict requirements due to its special operating nature and associated tasks. End-end Delay of the access technology components along with IMS entities affect the end-to-end signaling and Quality of Experience (QoE) offered for the end user in large scale systems. Having a generic system that has IMS core network serving both legacy mobile users and mission Critical system users will introduce overload especially at the IMS side. In this paper evaluation of IMS and SIP performance metrics and KPIs was investigated. Scenarios with increasing number of clients and devices that are trying to register in short time period were also investigated.

Anthony Olufemi Tesimi Adeyemi-ejeye - One of the best experts on this subject based on the ideXlab platform.

  • Ultra-High-Definition Video Transmission for Mission-Critical Communication Systems Applications
    Research Anthology on Recent Trends Tools and Implications of Computer Programming, 2020
    Co-Authors: Anthony Olufemi Tesimi Adeyemi-ejeye, Geza Koczian, Mohammed Abdulrahman Alreshoodi, Michael C. Parker, Stuart D. Walker
    Abstract:

    With the standardization of ultra-high-definition formats and their increasing adoption within the multimedia industry, it has become vital to investigate how such a resolution could impact the quality of experience with respect to mission-Critical Communication systems. While this standardization enables improved perceptual quality of video content, how it can be used in mission-Critical Communications remains a challenge, with the main challenge being processing. This chapter discusses the challenges and potential solutions for the deployment of ultra-high-definition video transmission for mission-Critical applications. In addition, it examines the state-of-the-art solutions for video processing and explores potential solutions. Finally, the authors predict future research directions in this area.

  • Ultra-High-Definition Video Transmission for Mission-Critical Communication Systems Applications: Challenges and Solutions
    Advances in Wireless Technologies and Telecommunication, 2020
    Co-Authors: Anthony Olufemi Tesimi Adeyemi-ejeye, Geza Koczian, Mohammed Abdulrahman Alreshoodi, Michael Parker, Stuart D. Walker
    Abstract:

    With the standardization of ultra-high-definition formats and their increasing adoption within the multimedia industry, it has become vital to investigate how such a resolution could impact the quality of experience with respect to mission-Critical Communication systems. While this standardization enables improved perceptual quality of video content, how it can be used in mission-Critical Communications remains a challenge, with the main challenge being processing. This chapter discusses the challenges and potential solutions for the deployment of ultra-high-definition video transmission for mission-Critical applications. In addition, it examines the state-of-the-art solutions for video processing and explores potential solutions. Finally, the authors predict future research directions in this area.

Divanilson R. Campelo - One of the best experts on this subject based on the ideXlab platform.

  • Experimental Evaluation of Cryptography Overhead in Automotive Safety-Critical Communication
    2018 IEEE 87th Vehicular Technology Conference (VTC Spring), 2018
    Co-Authors: Edilson A. Silva, Paulo Freitas De Araujo-filho, Divanilson R. Campelo
    Abstract:

    In this paper, cryptographic schemes are applied to Ethernet-based layer-2 Communication to provide authenticated encryption to safety- Critical automotive control data. Confidentiality, integrity and authenticity are provided by combining AES with HMAC. Experimental results using low-cost hardware show that, despite the introduced cryptographic overhead, latency requirements are comfortably met for this type of Communication.