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 TitleDate AddedCompany
whitepaper QoS Provisioning and Radio Resource Allocation in OFDMA Based WiMAX Systems2009-01-01 Rensselaer Polytechnic Institute
  Broadband Wireless Access based on the IEEE 802.16 suite of standards is quickly gaining importance as the basis for 4G technology, with the capability of providing high data rate QoS provisioned services for static as well as highly mobile users. Amongst the different PHY layers in the specification, Orthogonal Frequency Division based Multiple Access (OFDMA) is likely to emerge as the preferred PHY, due to the flexibility it offers to the system designer. The standard does not specify the resource allocation technique to be used in the system but leaves this open to allow vendors to differentiate their products. Since scheduling over OFDMA throws open a number of interesting and novel problems, the paper discusses different aspects of this issue in this paper.

Tags: Mobile and Wireless, Mobile and Wireless		   
whitepaper Achieving Business Agility with Application Grid2008-12-01 Oracle
  Companies are learning how to run their data centers more efficiently using less hardware, less software and less IT resources. These companies are turning to a new concept called application grid, an infrastructure layer beneath the application layer that pools and dynamically provisions the resources on which those applications run. Application grid brings the same type of efficiency, scalability, and quality of service to the application layer that database clusters brings to the database layer. With an application grid you get greater efficiency, exceptional agility, and superior quality of service. Download this free white paper now.

Tags: Data Infrastructure, Mobile and Wireless, Network Technologies, LAN - WAN, Software Development Tools, Internet and Web, Internet and Web		   
whitepaper Evaluating and Enhancing Green Practices with Cisco Catalyst Switching2009-01-22 Cisco Systems
  National security, environmental, and resource supply issues will drive governments to implement green initiatives and incentives. There will be business ramifications as a result of policies implemented by local, state, and federal governments around the world. As traditional energy supplies decrease and newer, but more costly, renewable supplies are brought online, organizations will be forced to look for more efficient ways to deploy their data networks to meet stricter government regulations and prevent a bottom-line impact.

Cisco has recognized this impending impact on the IT community for some time and has been building products and developing new technologies to assist organizations in this transition. This document describes the Green Operations and Characteristics of the Cisco® Catalyst® Series Switches. These switches include the 6500 Series, 4500 Series, 3750 Series, 3560 Series, and 2960 Series Switches. These Cisco Catalyst switch families offer the latest technologies to enable organizations to meet the green requirements of today while providing flexible architectures to address the necessities of tomorrow. This paper covers the following topics:
  • Energy Savings
  • Operational Efficiency
  • Innovative Business Practices


Tags: IT Budgeting, LAN - WAN, Network Management, LAN - WAN		   
whitepaper NuStar Energy Provides Support for Hundreds of Mobile Users2008-12-23 LogMeIn
  For the IT team at NuStar Energy, time-consuming and frustrating smartphone support is a thing of the past. Instead of relying on employees' descriptions of problems over the phone, they can now take remote control of the devices for quick troubleshooting and problem resolution. The IT Team now supports 300 widespread employee smartphones, anytime, from anywhere with an internet connection with LogMeIn Rescue+Mobile.

Tags: User Satisfaction, Mobile and Wireless, Network Management, LAN - WAN		   
whitepaper Long Term Evolution (LTE): A Technical Overview2008-12-16 Motorola
  This paper describes the system architecture and performance objectives of the next generation access-network technology being developed by 3GPP. It also discussed how mobility is handled in the new system. Motorola's role in this enhancement of 3GPP LTE technology was also explained. With the envisaged throughput and latency targets and emphasis on simplicity, spectrum flexibility, added capacity and lower cost per bit, LTE is destined to provide greatly improved user experience, delivery of new revenue generating exciting mobile services and will remain a strong competitor to other wireless technologies in the next decade for both developed and emerging markets.

Tags: Mobile and Wireless, Software Development Tools		   
whitepaper Resource-Aware Deployment and Configuration of QoS-Enabled Middleware2008-12-15 Vanderbilt University
  Ad hoc Deployment and Configuration (D&C) of fault-tolerance mechanisms can lead to unacceptable response times, overloads, and low-availability for soft real-time applications. This paper describes how the Quality-of-Service (QoS)-enabled middleware called DeCoRAM (Deployment and Configuration Reasoning via Analysis and Modeling) provides a holistic and automated solution to fault-tolerance and real-time D&C through two novel capabilities. First, DeCoRAM provides a deployment-time allocation and scheduling algorithm that maps passively replicated application components to appropriate hosts subject to their soft real-time requirements and determines the failover order of application replicas based on their worst case state synchronization delays. Second, DeCoRAM's model-driven D&C engine deploys and configures replicas for each application and provides resource-aware failover and delay-bounded state synchronization between backup and primary replicas.

Tags: Network Management		   
whitepaper SLA Requirement Generation and Implementation Algorithm Selection for Service Composition Based on QoS Reference Vector2008-12-11 Tsinghua University
  Under SOA, composite service is formed by aggregating multiple component services together in given workflow. One key criterion of this research is QoS composition. Most work on service composition focuses on the algorithms about how to compose services according to assumed service level agreement. This paper proposes to strengthen current service composition mechanism by adding generation of QoS requirement and its implementation algorithm selection based on the QoS reference vectors which are calculated optimally from the existing individual services' QoS by registry to represent QoS overview about the best QoS, the worst QoS, or the average QoS of all composite services.

Tags: Network Management		   
whitepaper Evaluation of Energy-Aware QoS Routing Protocol for Ad Hoc Wireless Sensor Networks2008-12-03 World Academy of Science, Engineering and Technology
  Many advanced Routing protocols for wireless sensor networks have been implemented for the effective routing of data. Energy awareness is an essential design issue and almost all of these routing protocols are considered as energy efficient and its ultimate objective is to maximize the whole network lifetime. However, the introductions of video and imaging sensors have posed additional challenges. Transmission of video and imaging data requires both energy and QoS aware routing in order to ensure efficient usage of the sensors and effective access to the gathered measurements. In this paper, the performance of the energy-aware QoS routing Protocol are analyzed in different performance metrics like average lifetime of a node, average delay per packet and network throughput.

Tags: Network Management, Network Management		   
whitepaper Towards a Meta-Negotiation Architecture for SLA-Aware Grid Services2008-11-20 Vienna University of Technology
  In novel market-oriented resource sharing models resource consumers pay for the resource usage and expect that non-functional requirements for the application execution, termed as Quality of Service (QoS), are satisfied. QoS is negotiated between two parties following the specific negotiation protocols and is recorded using Service Level Agreements (SLAs) standard. However, most of the existing work assumes that the communication partners know about the SLA negotiation protocols and about the SLA templates before entering the negotiation. However, this is a contradictory assumption, if one considers computational Grids and novel commercially oriented Computing Clouds where consumers and providers meet each other dynamically and on demand.

Tags: User Satisfaction		   
whitepaper Accurately Measuring Denial of Service in Simulation and Testbed Experiments2008-11-12 Institute of Electrical and Electronics Engineers
  Researchers in the Denial of Service (DoS) field lack accurate, quantitative and versatile metrics to measure service denial in simulation and testbed experiments. Without such metrics, it is impossible to measure severity of various attacks, quantify success of proposed defenses and compare their performance. Existing DoS metrics equate service denial with slow communication, low throughput, high resource utilization and high loss rate. These metrics are not versatile because they fail to monitor all traffic parameters that signal service degradation. They are not quantitative because they fail to specify exact ranges of parameter values that correspond to good or poor service quality. Finally, they are not accurate since they were not proven to correspond to human perception of service denial.

Tags: Intrusion - Tampering