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 TitleDate AddedCompany
whitepaper IPL Case Study - ntl: (Virgin Media)2008-01-14 IPL
  ntl:, now part of Virgin Media, was the UK's leading supplier of bundled services to residential customers. These included a range of digital and analogue cable television, broadband internet and telephone services. The company's top priority was quality of service i.e. ensuring the consistent delivery of the required services to each of its customers, with rapid identification and correction of any faults. However its existing TV surveillance facilities were failing to provide effective monitoring or fault identification facilities. ntl: selected IPL to develop a prototype Remote Quality of Service (RQoS) system. IPL constructed and developed a successful prototype, then developed the full-scale system, and helped to roll it out to the 23 regions of ntl:'s largest network.   
whitepaper A Major International Financial Services Institution Uses the Information Gleaned From IBM's Social Network Analysis Solution to Streamline Its IT Support and Infrastructure Operations2008-01-01 IBM
  The financial services institution's operational structure comprised three separate divisions each of which had different requirements in terms of IT hardware, software and support. Using a central IT infrastructure to meet such a diverse set of needs meant that design and engineering were performed at the lowest common denominator, creating a situation where the investment bank division, which required speedier response times and a higher level of service, was supplementing the central IT support group with its own auxiliary IT support. The institution turned to IBM ODIS - a partnership between IBM Research and IBM Global Business Services - to devise a solution that would help improve mission clarity, quality of service and timeliness of response on a cost-neutral basis.

Tags: Customer Support Services		   
whitepaper The Bandwidth Exchange Architecture2008-01-01 Drexel University
  New applications for the Internet such as video on demand, grid computing etc. depend on the availability of high bandwidth connections with acceptable Quality of Service (QoS). There appears to be, therefore, a requirement for a market where bandwidth-related transactions can take place. For this market to be effective, it must be efficient for both the provider (seller) and the user (buyer) of the bandwidth. This implies that: (a) the buyer must have a wide choice of providers that operate in a competitive environment, (b) the seller must be assured that a QoS transaction will be paid by the customer, and (c) the QoS transaction establishment must have low overheads so that it may be used by individual customers without a significant burden to the provider.

Tags: Bandwidth Issues		   
whitepaper A Reservation Scheme Satisfying Bandwidth QoS Constraints for Ad-Hoc Networks2008-01-01 University of Antwerp
  Achieving QoS (Quality of Service) in Mobile Ad-hoc NETworks (MANET) has been a research topic in the last years. This paper describes a QoS reservation mechanism for Routing Ad-hoc Networks. The mechanism is targeted for sources requiring a bandwidth allocation. The mechanism is based on the knowledge of the bandwidth requirements of the neighbors of a node and the interferent nodes in the cover area of each node. The paper describes as the protocol could be integrated in AODV and OLSR.

Tags: Bandwidth Issues		   
whitepaper Sink Tree-Based Bandwidth Allocation for Scalable QoS Flow Set-Up2008-01-01 Michigan Technological University
  Although the Differentiated Services architecture supports scalable packet forwarding based on aggregate flows, the detailed procedure of Quality of Service (QoS) flow set-up within this architecture has not been well established. This paper explores the possibility of a scalable QoS flow set-up using a sink-tree paradigm. The paradigm constructs a sink tree at each egress edge router using network topology and bandwidth information provided by a QoS extended version of Open Shortest Path First (OSPF). Simulation results are very encouraging in that the methodology requires significantly less communication overhead in setting up QoS flows compared to the traditional per-flow signaling-based methodology while still maintaining high resource utilization.

Tags: Bandwidth Issues, Scalability		   
whitepaper A Study on Using Network Flows in Hierarchical QoS Routing2008-01-01 Pennsylvania State University
  QoS routing is the process of routing a connection based on the connection's resource requirements. The overhead involved in QoS routing increases with the network size. State aggregation is an important technique that helps to reduce the overhead. This paper proposes a new state aggregation technique based on "Network-flow". The approach allows a domain to update the aggregate sent by other domains and keep track of resource availability in other domains. The paper studies the efficacy of one's approach with respect to various network and traffic parameters. Preliminary simulation results show that one's approach gives a better bandwidth admission ratio when compared with existing techniques.

Tags: Bandwidth Issues		   
whitepaper On Quality of Service Optimization With Discrete QoS Options2008-01-01 Carnegie Mellon University
  Quality of Service (QoS) control is considered an important user demand and therefore receives wide attention, especially in the areas of computer networks and real-time multimedia systems. This paper presents a QoS management scheme that enables people to quantitatively measure QoS, and to analytically plan and allocate resource. In this model, available system resources are apportioned across multiple applications such that the net utility that accrues to the end-users of those applications is maximized. The author primarily works with "Continuous" QoS dimensions, and assumed that the 'Utility' gained by improvements along a QoS dimension were always representable by concave functions.   
whitepaper Distributed QoS Compilation and Runtime Instantiation2008-01-01 University of Illinois
  The rapid growth and coexistence of different application domains, such as multimedia and electronic commerce, present a significant challenge to the provision of their Quality of Service (QoS). To solve this challenge, the author needed a unified QoS framework, which allows flexibility and reconfigurability. This paper presents a reconfigurable component-based QoS framework, called 2KQ, which solves the challenge by partitioning the end-to-end QoS setup process into distributed QoS compilation and runtime QoS instantiation phases for different types of applications. Entities, services and protocols of this framework, such as application-to-component translator and component-to-resources translators, achieve the distributed QoS compilation and prepare all necessary QoS structures for the end-to-end QoS setup.

Tags: Component-Based, Multimedia		   
whitepaper Dynamic Security and QoS Adaptation in Real-Time Embedded Systems2008-01-01 University of Virginia
  A number of Real-Time Embedded Systems (RTESs) are used to manage critical infrastructure such as electric grids or C4I systems. In these systems, it is essential to meet deadlines, for example, to avoid a power outage or loss of a life. The importance of security support is also in-creasing, because more RTESs are being networked. To securely transmit sensitive data, e.g., a battle field status, across the network, RTESs need to protect the data via cryptographic techniques. However, security support may cause deadline misses or unacceptable QoS degradation. As an initial effort to address this problem, the security support in RTESs is formulated as a QoS optimization problem.

Tags: Embedded Systems, Security Management		   
whitepaper QoS-Aware Discovery of Wide-Area Distributed Services2008-01-01 University of Illinois
  The global computational grids bring together distributed computation/communication resources. Beyond this, the paper envisions the emergence of global 'Service grids', which provide a 'Market' of application-level distributed services for clients to discover and to request. This paper studies the issue of wide-area service discovery in service grids. The paper starts with an existing basic wide-area service discovery framework. The framework adopts a scalable architecture consisting of a hierarchy of Discovery Servers. The paper then identifies problems with the basic framework, and proposes the enhancement of query responsiveness and QoS awareness. The key techniques introduced include: the addition of QoS feedback capability to clients; and the caching and propagation of discovery results with QoS feedbacks in the discovery server hierarchy.