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heterogeneous networks

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The Armada Framework for Parallel I/O on Computational Grids

whitepaper An exciting trend in high-performance distributed computing is the development of widely-distributed networks of heterogeneous systems and devices, known as computational grids. Grid applications use high-speed networks to logically assemble...

Tags: high performance computing, distributed, grid, heterogeneous

[10 Apr 2008]

Storage Area Network Security: Data Access and Fabric Management

whitepaper They are designed to allow multiple applications, in heterogeneous or homogeneous environments, to share the same storage resources. Storage Area Networks (SANs), using Fibre Channel technologies have become the storage solution of choice for data...

Tags: storage management, environments, fibre channel, data access

[10 Apr 2008]

TCP Hybla: A TCP Enhancement for Heterogeneous Networks

whitepaper In heterogeneous networks, TCP connections that incorporate a terrestrial or satellite radio link are greatly disadvantaged with respect to entirely wired connections, because of their longer round trip times (RTTs).

Tags: tcp - ip

[14 Jan 2008]

A Simple Model for the Traffic Profile of TCP Streams in Heterogeneous Networks

whitepaper The work discussed in this paper focuses on the study of the TCP traffic generation process in heterogeneous networks employing simple on/off traffic models. For a given TCP flow, the derivation of the model parameters considers the flow's mean...

Tags: tcp - ip

[14 Jan 2008]

Model-Based Loss Inference by TCP Over Heterogeneous Networks

whitepaper The Transmission Control Protocol (TCP) has been the protocol of choice for many Internet applications requiring reliable connections. The design of TCP has been challenged by the extension of connections over wireless links.

Tags: tcp - ip

[14 Jan 2008]

Shaping TCP Traffic in Heterogeneous Networks

whitepaper This paper proposes an experimental transport protocol that has energy and throughput performance gains in both wired and wireless environments. This approach decouples error recovery from contention estimation and focuses on how these two...

Tags: tcp - ip

[14 Jan 2008]

Window-Based Congestion Control in TCP With Explicit Congestion Notification: Multiple Congestion

whitepaper This paper proposes a window-based congestion control algorithm to achieve a max-min fair sharing of the available bandwidth in ECN capable heterogeneous TCP networks. The proposed algorithm uses the successive binary congestion information...

Tags: bandwidth issues

[14 Jan 2008]

Achieving Loss Isolation for TCP Over Multiple Wireless Interfaces

whitepaper When heterogeneous wireless networks overlap in coverage, a mobile terminal can use multiple wireless interfaces simultaneously to achieve higher bandwidth. But owing to the limited bandwidth of the present day mobile networks, it has become very...

Tags: tcp - ip

[14 Jan 2008]

Performance Evaluation of UMTS for Mobile Internet Access

whitepaper These Internet applications rely on two common protocols, namely, Transmission Control Protocol and the Internet Protocol (TCP/IP), to reliably transport data across heterogeneous networks. UMTS constitutes the third generation of cellular wireless...

Tags: tcp - ip

[14 Jan 2008]

Experimental Evaluation of SunOS IPC and TCP/IP Protocol Implementation

whitepaper Protocols have to operate in a complex environment comprised of various operating systems, host architectures, and a rapidly growing and evolving internet of several heterogeneous subnetworks. Progress in the field of high speed networking and...

Tags: bandwidth issues

[14 Jan 2008]

Global Stability Analysis of a TCP/AQM Protocol for Arbitrary Networks With Delay

whitepaper This paper investigates global stability of Fast AQM Scalable TCP (FAST), a network congestion control scheme for the Internet modelled by a nonlinear delay differential equation with heterogeneous delays.

Tags: tcp - ip

[14 Jan 2008]

Fixed Point Approximations for TCP Behavior in Networks of Routers Implementing Heterogeneous Queue Management Policies

whitepaper This paper uses fixed point methods to model the behavior of a population of TCP flows traversing a network of routers implementing either Drop Tail or the RED queue management policies. A non-linear problem is formulated with the router average...

Tags: switching

[08 Jan 2008]

Managing Storage Complexity for Healthcare Providers

whitepaper Advances in diagnostic technology and the increasing popularity of digital medical images and records have resulted in large networks of heterogeneous storage systems that now house vast amounts of stored data.

Tags: knowledge and data management

[08 Jan 2008]

TCP HandOff: A Practical TCP Enhancement for Heterogeneous Mobile Environments

whitepaper In this paper, TCP HandOff (TCP-HO), a practical end-to-end mechanism, is proposed for improving TCP performance in heterogeneous mobile environments. Many different kinds of wireless access networks have been deployed for the Internet and have...

Tags: tcp - ip

[08 Jan 2008]

Improving TCP Performance Over Wireless Networks

whitepaper Wireless network has very different characteristics as compare to wired network which causes the TCP inefficient performance over heterogeneous environment of wired and wireless network. Due to tremendous growth of Wireless internet users there is...

Tags: tcp - ip

[08 Jan 2008]

Discovery Services - Enabling RFID Traceability in EPCglobal Networks

whitepaper The Discovery Services is the key step in enabling creation and adoption of this network of possibly heterogeneous enterprise systems. The EPCglobal consortium defines standards to enable data sharing of electronic product code related information...

Tags: mobile - wireless communications

[08 Jan 2008]

Modeling TCP Throughput Over Wired/Wireless Heterogeneous Networks for Receiver-Based ACK Splitting Mechanism

whitepaper Recently, heterogeneous networks with wired and wireless links are becoming common. However, the performance of TCP data transmission deteriorates significantly over such networks because of packet losses caused by the high bit error rate of...

Tags: tcp - ip

[26 Dec 2007]

Dealing With Sudden Bandwidth Changes in TCP

whitepaper In the current Internet, sudden bandwidth changes may occur due to vertical handovers between heterogeneous access networks or routing path changes. The current implementation of TCP is designed and optimized for stable networks, and does not adapt...

Tags: bandwidth issues

[26 Dec 2007]

Improving TCP Congestion Control Over Internets With Heterogeneous Transmission Media

whitepaper The implementation of TCP, which is called TCP Santa Cruz, is designed to work with path asymmetries, out-of-order packet delivery, and networks with lossy links, limited bandwidth and dynamic changes in delay.

Tags: tcp - ip

[26 Dec 2007]

Fair Bandwidth Sharing Between Unicast and Multicast Flows in Best-Effort Networks

whitepaper The simulation results obtained for very heterogeneous sources and links characteristics suggest that, on the one hand, SBQ achieves the expected aggregated bandwidth sharing among unicast and multicast service, and on the other hand the multicast...

Tags: bandwidth issues

[26 Dec 2007]

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