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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 BodyQoS: Adaptive and Radio-Agnostic QoS for Body Sensor Networks2008-01-03 College of William and Mary
  As wireless devices and sensors are increasingly deployed on people, researchers have begun to focus on wireless body-area networks. Applications of wireless body sensor networks include healthcare, entertainment, and personal assistance, in which sensors collect physiological and activity data from people and their environments. In these body sensor networks, quality of service is needed to provide reliable data communication over prioritized data streams. This paper proposes BodyQoS, the first running QoS system demonstrated on an emulated body sensor network. BodyQoS adopts an asymmetric architecture, in which most processing is done on a resource rich aggregator, minimizing the load on resource limited sensor nodes.

Tags: Mobile and Wireless		   
whitepaper Dynamic Issues in MPLS Service Restoration2008-01-01 University of New Hampshire
  Packet loss and reordering are the most significant negative effects resulting from protection switching. In conventional MPLS networks, the detection and retransmission of out-of-order or lost packets is left to the higher layers, which in effect, degrades the overall performance. This paper proposes a signaling mechanism to minimize the impact of protection switching on packet loss and reordering. The proposed signaling protocol is general and independent of the particular MPLS protection mechanism.

Tags: Network Management, LAN - WAN		   
whitepaper Neural-Based Quality of Service Estimation in MPLS Routers2008-01-01 Higher Institute of Computer Modelling and their Applications
  The MultiProtocol Label Switching (MPLS) is being considered as one possible approach for scalable Quality of Service (QoS) provisioning in the Internet. As MPLS is standardized by Internet Engineering Task Force (IETF) and is expected to be implemented in the near future, this paper addresses the issue of QoS estimation in a MLPS router fed with bursty traffic by means of a neural network. The latter is trained to anticipate the average delay and the Packet Loss Rate (PLR) within the MPLS node for each class of service, given the mean rates, the peak rates and the coefficients of variation of the packet inter-arrival time of the incoming traffic flows.

Tags: Network Management, LAN - WAN		   
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: Network Management		   
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: Network Management		   
whitepaper Quality of Service Routing in IP Networks2008-01-01 State University of New York
  Multimedia applications such as video-conferencing, telemedicine, HDTV etc. have very stringent Quality of Service (QoS) demands and require a connection oriented service. For these applications, a path satisfying their requirements in terms of bandwidth, delay, buffer etc. needs to be found. As conventional IP routing is based only on hop counts, it is not suitable for multimedia applications. It is clear that, to route requests that have QoS requirements, existing routers should be made QoS aware and the packet forwarding should be based on QoS parameters. Also, routing protocols like OSPF and RIP must be extended suitably to facilitate QoS routing. The goal of QoS routing algorithms is to find a loop-less path satisfying a given set of constraints on parameters like bandwidth, delay, etc.

Tags: Network Management, Network Technologies		   
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: Network Management		   
whitepaper Threshold-Based Burst Assembly Policies for QoS Support in Optical Burst-Switched Networks2008-01-01 University of Texas
  This paper proposes a threshold-based burst assembly scheme in conjunction with a burst segmentation policy to provide QoS in Optical Burst Switched (OBS) networks. Bursts are assembled at the network edge by collecting packets that have the same QoS requirements. Once the number of packets in a burst reaches a threshold value, the burst is sent into the network. The paper investigates various burst assembly strategies which differentiate bursts by utilizing different threshold values or assigning different burst priorities to bursts that contain packets with differing QoS requirements. The primary objective of this work is to find the optimal threshold values for various classes of bursts.

Tags: LAN - WAN, Network Management		   
whitepaper Cognitive Packet Networks: QoS and Performance2008-01-01 University of Central Florida
  Reliability, security, scalability and QoS (Quality-of-Service) have become key issues as one envision the future Internet. This paper presents the "Cognitive Packet Network (CPN)" architecture in which intelligent peer-to-peer routing is carried out with the help of "Smart packets" based on best-effort QoS goals. Since packetized voice has stringent QoS requirements, the paper then discusses the choice of a "Goal" and "Reward" function for this application and present experiments conducted for "Voice over CPN". Its performance is detailed via several measurements, and the resulting QoS is compared with that of the IP routing protocol under identical conditions showing the gain resulting from the use of CPN.

Tags: Network Technologies, Network Management