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 TitleDate AddedCompany
whitepaper Buy-at-Bulk Network Design With Protection2007-08-07 Columbia University
  This paper considers approximation algorithms for buy-at-bulk network design, with the additional constraint that demand pairs be protected against edge or node failures in the network. In practice, the most popular model used in high speed telecommunication networks for protection against failures, is the so-called 1+1 model. In this model, two edge or node-disjoint paths are provisioned for each demand pair. The paper obtains the first non-trivial approximation algorithms for buy-at-bulk network design in the 1+1 model for both edge and node-disjoint protection requirements. The results are for the single-cable cost model, which is prevalent in optical networks. More specifically, the paper presents a constant-factor approximation for the single-sink case, and an O(log3 n) approximation for the multi-commodity case.

Tags: Network Design		   
whitepaper Design and Performance Evaluation of Meghadoot - A Hybrid Wireless Network Architecture0000-00-00 Indian Institute of Technology Madras
  This paper presents the design and evaluation of Meghadoot - a hybrid wireless network architecture that provides improved services, such as better connectivity among the users, efficient routing, and access to the Internet. Meghadoot architecture combines the advantages of both single-hop and multi-hop wireless networks. Meghadoot is extremely useful as an alternative to existing wired or wireless last mile solutions, and to establish a network in a residential complex or in a university campus. The Meghadoot architecture has been implemented and tested in both the NS2 simulator and in the Linux kernel.

Tags: Network Design, Mobile - Wireless Communications		   
whitepaper Design and Analysis of a Leader Election Algorithm for Mobile Ad Hoc Networks0000-00-00 University of Massachusetts
  Leader election is a very important problem, not only in wired networks, but in mobile, ad hoc networks as well. Existing solutions to leader election do not handle frequent topology changes and dynamic nature of mobile networks. This paper presents a leader election algorithm that is highly adaptive to arbitrary (possibly concurrent) topological changes and is therefore well-suited for use in mobile ad hoc networks. The algorithm is based on finding an extrema and uses diffusing computations for this purpose. The paper shows, using linear-time temporal logic, that the algorithm is "Weakly" self stabilizing and terminating. It also simulates the algorithm in a mobile ad hoc setting.

Tags: Network Design, Mobile - Wireless Communications		   
whitepaper Single-Layer Cuts for Multi-Layer Network Design Problems2007-08-01 University of Warwick
  The paper studies a planning problem arising in SDH/WDM multi-layer telecommunication net-work design. The goal is to find a minimum cost installation of link and node hardware of both network layers such that traffic demands can be realized via grooming and a survivable routing. The paper presents a mixed-integer programming formulation that takes many practical side constraints into account, including node hardware, several bitrates, and survivability against single physical node or link failures. This model is solved using a branch-and-cut approach with problem-specific preprocessing and cutting planes based on either of the two layers. On several realistic two-layer planning scenarios, the paper shows that these cutting planes are still useful in the multi-layer context, helping to increase the dual bound and to reduce the optimality gaps.   
whitepaper Oracle Coherence: Providing Extreme Performance, Predictable Scalability, and Continuous Availability for Mission-Critical Java Applications2007-08-01 Oracle
  Organizations can gain significant advantage by managing and exploiting their information systems more effectively than their competitors. But with today's tight budget constraints and technology limitations, many miss the opportunity - sometimes with disastrous results. This white paper addresses how you can gain a measurable competitive edge without compromise - today.

BONUS! Download this paper today for your chance to win an Apple iPod! Click here for complete Sweepstakes Rules.

Tags: Scalability, Java, Network Design, High Performance Computing		   
whitepaper Yankee Group: Exploring the Benefits of 3G Wireless Integrated into Business-Class Routers2007-08-01 Sprint
  This Yankee Group Report examines how enterprises can begin capitalizing on emerging wireless technologies today by integrating 3G high-speed wireless into their communications infrastructure. The report:
  • Examines how 3G high-speed wireless technologies are being integrated with router platforms to create new forms of backup and primary communications access
  • Highlights the business and cost benefits to be gained by implementing business-class routers with integrated 3G wireless technologies
  • Presents deployment scenarios and implementation approaches for routers with integrated 3G access


Tags: Network Design, Mobile - Wireless Communications, WiMAX (802.16), Network Administration		   
whitepaper Converged, Service-Aware IP/MPLS Network Architecture for Cable MSOs - Delivering Flawless Quality of Experience to Residential and Commercial Customers2007-07-30 Alcatel-Lucent
  The cable MSO networks of the future will be converged communications networks that effortlessly deliver video, multimedia and on-demand services to residential and commercial business customers. To make this possible, cable Multiple Service Operators (MSOs) are transforming their networks through a convergence of consumer, business and mobile services over a common Internet Protocol/MultiProtocol Label Switching (IP/MPLS) infrastructure. But to meet customer expectations, cable MSOs must look beneath the underlying network infrastructure to the routers that route services. Those routers must be advanced, service routing platforms that enable delivery of today's and tomorrow's high-performance video, high-speed data and voice/mobility services to residential, Small-Medium Enterprise (SME) and large enterprise customers with a high level of quality and service reliability.

Tags: Network Design, MPLS		   
whitepaper Multi-Layer Network Design With Multicast Traffic and Statistical Multiplexing2007-07-27 Politecnico di Milano
  The new packet services and applications are radically changing not only traffic demands but also the architecture of transport networks. Adding packet layer support into backbone nodes is considered an important opportunity by telecom carriers that want to integrate packet technologies of the access and metropolitan networks within their networks to improve efficiency and flexibility. In this context, Multi-Protocol Label Switching (MPLS) is at the moment the most promising and popular packet technology. The resulting new network architecture requires new models and methodologies for designing the network in a cost effective way. The classical network design approaches are no longer appropriate since they cannot capture the traffic aggregation effect due to the added packet layer, and new multi-layer network design models must be adopted.

Tags: Network Design, MPLS		   
whitepaper Automatic Grid Assembly by Promoting Collaboration in Peer-to-Peer Grids2007-07-25 Reed Elsevier
  Currently, most computational grids (systems allowing transparent sharing of computing resources across organizational boundaries) are assembled using human negotiation. This procedure does not scale well, and is too inflexible to allow for large open grids. Peer-to-peer grids present an alternative way to build grids with many sites. However, to actually assemble a large grid, peers must have an incentive to provide resources to the system. This paper presents an incentive mechanism called the Network of Favors, which makes it in the interest of each participating peer to contribute its spare resources.

Tags: High Performance Computing, Collaboration Tools		   
whitepaper Separating Routing and Forwarding: A Clean-Slate Network Layer Design2007-07-16 University of Kentucky
  This paper presents a "Clean-slate" design for a network-layer routing and forwarding system intended to address shortcomings of the current Internet Protocol. The design separates routing from both forwarding and topology discovery; requires only a flat, topology-independent namespace; and allows for policies of both users and service providers to be supported. Channels serve as the primary abstraction, allowing the network topology to be viewed at multiple levels of abstraction using the same identifiers. This paper presents the basic design, which is based on loose source routing. The routing and forwarding scheme is part of a larger project to produce a "Clean-slate" network layer design.

Tags: Network Design		   


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