The Experts below are selected from a list of 38139 Experts worldwide ranked by ideXlab platform

David W Walker - One of the best experts on this subject based on the ideXlab platform.

Preben Mogensen - One of the best experts on this subject based on the ideXlab platform.

  • efficient low complexity packet scheduling algorithm for mixed urllc and embb traffic in 5g
    Vehicular Technology Conference, 2019
    Co-Authors: Ali Karimi, Nurul Huda Mahmood, Guillermo Pocovi, Klaus I. Pedersen, Preben Mogensen
    Abstract:

    We address the problem of resource allocation and packet scheduling for a mixture of ultra- reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB) traffic in a fifth generation New Radio (5G NR) networks. A novel resource allocation method is presented that is latency, control channel, hybrid automatic repeat request (HARQ), and radio channel aware in determining the transmission resources for different users. This is of high importance for the scheduling of URLLC users in order to minimize their latency, avoid unnecessary costly segmentation of URLLC payloads over multiple transmissions, and benefit from radio channel aware multi-user diversity mechanisms. The performance of the proposed algorithm is evaluated with an advanced 5G NR Compliant System level simulator with a high degree of realism. Simulation results show promising gains of up to 98% latency improvement for URLLC traffic and 12% eMBB end-user throughput enhancement as compared to conventional proportional fair scheduling.

  • VTC Spring - Efficient Low Complexity Packet Scheduling Algorithm for Mixed URLLC and eMBB Traffic in 5G
    2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), 2019
    Co-Authors: Ali Karimi, Nurul Huda Mahmood, Guillermo Pocovi, Klaus I. Pedersen, Preben Mogensen
    Abstract:

    We address the problem of resource allocation and packet scheduling for a mixture of ultra- reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB) traffic in a fifth generation New Radio (5G NR) networks. A novel resource allocation method is presented that is latency, control channel, hybrid automatic repeat request (HARQ), and radio channel aware in determining the transmission resources for different users. This is of high importance for the scheduling of URLLC users in order to minimize their latency, avoid unnecessary costly segmentation of URLLC payloads over multiple transmissions, and benefit from radio channel aware multi-user diversity mechanisms. The performance of the proposed algorithm is evaluated with an advanced 5G NR Compliant System level simulator with a high degree of realism. Simulation results show promising gains of up to 98% latency improvement for URLLC traffic and 12% eMBB end-user throughput enhancement as compared to conventional proportional fair scheduling.

Yusri Yusof - One of the best experts on this subject based on the ideXlab platform.

  • Review of STEP-NC Compliant System for Turn-Mill Operations
    Advanced Materials Research, 2011
    Co-Authors: Yusri Yusof, Mohd Fahrurazi Mohd Nor
    Abstract:

    Today with the latest technology the information beyond tool movement and switching instruction such as tooling, manufacturing features and process sequences are needed to support global adaptability for manufacturing with a specific focus on CNC-based manufacture This research focuses on the use of the new standard; ISO 14649 (STEP-NC), to address the process planning and machining of discrete turn/mill components and proposes a STEP Compliant NC structure for generation of ISO 14646 code which can be used for turned component manufacture. The novel application of this work is STEP-NC Compliant process control where the research will utilise and extend the standard for in process measurement at the machine and also explore the application and integration of the STEP-NC standards. The major contribution of this research is the review of a computational environment for a STEPNC Compliant System for turn/mill operations.

  • Design of a STEP Compliant System for turning operations
    Robotics and Computer-Integrated Manufacturing, 2010
    Co-Authors: Yusri Yusof, Keith Case
    Abstract:

    The changing economic climate has made global manufacturing a growing necessity over the last decade, forcing companies from East and West to collaborate beyond geographic boundaries in the design, manufacture and assembly of products. The ISO 10303 and ISO 14649 Standards (STEP and STEP-NC) have been developed to introduce interoperability into manufacturing enterprises so as to meet the challenges of responding to production on demand. This paper describes and illustrates a STEP Compliant CAD/CAPP/CAM System for the manufacture of rotational parts on CNC turning centers. The information models to support the proposed System together with the data models defined in the ISO 14649 standard used to create the NC programs are also described. A structured view of a STEP Compliant CAD/CAPP/CAM System framework supporting the next generation of intelligent CNC controllers for turn/mill component manufacture is provided. Finally a proposed computational environment for a STEP-NC Compliant System for turning operations (SCSTO) is described. SCSTO is the experimental aspect of the research and is supported by information models that and have been constructed using a structured methodology and object-oriented methods. SCSTO was developed to generate a Part 21 file based on machining features to support the interactive generation of process plans utilizing feature extraction. A case study component has been developed to prove the concept of using the milling and turning parts of ISO 14649 to provide a turn-mill CAD/CAPP/CAM environment.

  • A STEP-Compliant System for turning operations
    2007
    Co-Authors: Yusri Yusof, Keith Case, Stephen T. Newman
    Abstract:

    Several CAPP and CAM Systems related to STEP-NC compliance are being implemented or commercialized around the world but the focus on turning operations has been limited in the second respect. This paper describes and illustrates a STEP Compliant CAD/CAPP/CAM System for the manufacture of rotational parts on CNC turning centers. The information models to support the proposed System together with the data models defined in the ISO14649 standard used to create the NC programs are also described. A structured view of a STEP Compliant CAD/CAPP/CAM System framework supporting the next generation of intelligent CNC controllers for turn/mill component manufacture is provided. Finally the authors proposed System is outlined by the modeling of a turn/mill workstation and through the use of user interface dialogs that depict the information held in the models. A case study component has been developed to prove the concept for using the milling and turning parts of ISO14649 to provide a turn-mill CAD/CAPP/CAM environment.

Yan Huang - One of the best experts on this subject based on the ideXlab platform.

Dominik Mertens - One of the best experts on this subject based on the ideXlab platform.

  • EMMA 2 – A MAGE-Compliant System for the collaborative analysis and integration of microarray data
    BMC Bioinformatics, 2009
    Co-Authors: Michael Dondrup, Stefan P Albaum, Thasso Griebel, Kolja Henckel, Sebastian Jünemann, Tim Kahlke, Christiane K Kleindt, Helge Küster, Burkhard Linke, Dominik Mertens
    Abstract:

    Background Understanding transcriptional regulation by genome-wide microarray studies can contribute to unravel complex relationships between genes. Attempts to standardize the annotation of microarray data include the Minimum Information About a Microarray Experiment (MIAME) recommendations, the MAGE-ML format for data interchange, and the use of controlled vocabularies or ontologies. The existing software Systems for microarray data analysis implement the mentioned standards only partially and are often hard to use and extend. Integration of genomic annotation data and other sources of external knowledge using open standards is therefore a key requirement for future integrated analysis Systems. Results The EMMA 2 software has been designed to resolve shortcomings with respect to full MAGE-ML and ontology support and makes use of modern data integration techniques. We present a software System that features comprehensive data analysis functions for spotted arrays, and for the most common synthesized oligo arrays such as Agilent, Affymetrix and NimbleGen. The System is based on the full MAGE object model. Analysis functionality is based on R and Bioconductor packages and can make use of a compute cluster for distributed services. Conclusion Our model-driven approach for automatically implementing a full MAGE object model provides high flexibility and compatibility. Data integration via SOAP-based web-services is advantageous in a distributed client-server environment as the collaborative analysis of microarray data is gaining more and more relevance in international research consortia. The adequacy of the EMMA 2 software design and implementation has been proven by its application in many distributed functional genomics projects. Its scalability makes the current architecture suited for extensions towards future transcriptomics methods based on high-throughput sequencing approaches which have much higher computational requirements than microarrays.

  • EMMA 2 – A MAGE-Compliant System for the collaborative analysis and integration of microarray data
    BMC bioinformatics, 2009
    Co-Authors: Michael Dondrup, Stefan P Albaum, Thasso Griebel, Kolja Henckel, Sebastian Jünemann, Tim Kahlke, Christiane K Kleindt, Helge Küster, Burkhard Linke, Dominik Mertens
    Abstract:

    Background Understanding transcriptional regulation by genome-wide microarray studies can contribute to unravel complex relationships between genes. Attempts to standardize the annotation of microarray data include the Minimum Information About a Microarray Experiment (MIAME) recommendations, the MAGE-ML format for data interchange, and the use of controlled vocabularies or ontologies. The existing software Systems for microarray data analysis implement the mentioned standards only partially and are often hard to use and extend. Integration of genomic annotation data and other sources of external knowledge using open standards is therefore a key requirement for future integrated analysis Systems.

  • emma 2 a mage Compliant System for the collaborative analysis and integration of microarray data
    BMC Bioinformatics, 2009
    Co-Authors: Michael Dondrup, Stefan P Albaum, Thasso Griebel, Kolja Henckel, Sebastian Jünemann, Tim Kahlke, Christiane K Kleindt, Helge Küster, Burkhard Linke, Dominik Mertens
    Abstract:

    Background Understanding transcriptional regulation by genome-wide microarray studies can contribute to unravel complex relationships between genes. Attempts to standardize the annotation of microarray data include the Minimum Information About a Microarray Experiment (MIAME) recommendations, the MAGE-ML format for data interchange, and the use of controlled vocabularies or ontologies. The existing software Systems for microarray data analysis implement the mentioned standards only partially and are often hard to use and extend. Integration of genomic annotation data and other sources of external knowledge using open standards is therefore a key requirement for future integrated analysis Systems.