A Comparison of Asynchronous Transfer Mode (Atm) and High Speed Ethernet: The Network Design Implications to a Business Organization

Guster, Dennis; Sohn, Changsoo; Safonov, Paul; Robinson, David

doi:10.1142/s0219622003000860

Cited by 3 publications

(1 citation statement)

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“…1 Especially, wireless networking has become one of the most innovative technological trends in the telecommunication area, among which wireless LAN is the most promising. 2,3 Nodes of wireless LANs can establish peer-to-peer communications without using a central coordinator by implementing the distributed coordination function (DCF) of the IEEE 802.11 standard.…”

Section: Introductionmentioning

confidence: 99%

PARAMETER DECISION FOR ENHANCING PERFORMANCE OF WIRELESS LANs WITH PRIORITIZED MESSAGES

Jeong

Hur

Kim

2007

Int. J. Info. Tech. Dec. Mak.

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Distributed coordination function (DCF) is a primary random access mechanism of IEEE 802.11, which is the basic protocol of wireless LAN based on the CSMA/CA protocol. It enables fast installation with minimal management and maintenance costs and is a very robust protocol for the best effort service in wireless medium. The current DCF, however, is known to be unsuitable for real-time applications such as voice message transmission. In this paper, we focus on the performance issues of IEEE 802.11 which accommodates the prioritized messages. Existing results use the initial window size and backoff windowincreasing factor as tools to handle the priority of the messages. Instead, we introduce a novel scheme which chooses the backoff timer with arbitrary probabilities. By this, one can greatly reduce the backoff delay of the lower priority messages without degrading the performance of higher priority. Additionally, we provide a step-by-step procedure which determines the system parameters such as the initial window size, backoff windowincreasing factor, and the backoff timer choosing probabilities, guaranteeing the quality of service (QoS).

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Section: Introductionmentioning

confidence: 99%

PARAMETER DECISION FOR ENHANCING PERFORMANCE OF WIRELESS LANs WITH PRIORITIZED MESSAGES

Jeong

Hur

Kim

2007

Int. J. Info. Tech. Dec. Mak.

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Network Performance Impacts on Operators in Safety-Critical Systems

Bayrak

Grabowski

2006

Int. J. Info. Tech. Dec. Mak.

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Safety-critical wide area networks are comprised of human and technical elements cooperatively performing tasks in a safety-critical setting. In such settings, both human and technical dimensions are critical in performance evaluation. It is the relationships between changes in network performance and their impacts on human operator performance with safety-critical wide area networks that we investigate in this research. The paper begins by examining the theoretical background for this research, and then describes the research model. It was found that decreases in network reliability were associated with expected degradations in operator satisfaction, operator confidence, and increases in operator workload. Likewise, it was found that an increased number of network tasks processed was associated with a decrease in operator accuracy and decreased operator communication. The results of this study suggest that understanding the impact of the network performance on human performance is important in safety-critical settings employing wide-area networks.

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Evaluating Computer Network Packet Inter-Arrival Distributions

Guster

Robinson

Sundheim

2009

Encyclopedia of Information Science and Technology, Second Edition

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The past decade could be classified as the “decade of connectivity”; in fact, it is commonplace for computers to be connected to an LAN, which in turn is connected to a WAN, which provides an Internet connection. On an application level this connectivity allows access to data that even five years earlier were unavailable to the general population. This growth has not occurred without problems, however. The number of users and the complexity/size of their applications continue to mushroom. Many networks are over-subscribed in terms of bandwidth, especially during peak usage periods. Often network growth was not planned for, and these networks suffer from poor design. Also, the explosive growth has often necessitated that crisis management be employed just to keep basic applications running. Whatever the source of the problem, it is clear that proactive design and management strategies need to be employed to optimize available networking resources (Fortier & Desrochers, 1990). This is especially true in today’s world of massive Internet usage (Zhu, Yu, & Doyle, 2001).

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A Comparison of Asynchronous Transfer Mode (Atm) and High Speed Ethernet: The Network Design Implications to a Business Organization

Cited by 3 publications

References 0 publications

PARAMETER DECISION FOR ENHANCING PERFORMANCE OF WIRELESS LANs WITH PRIORITIZED MESSAGES

PARAMETER DECISION FOR ENHANCING PERFORMANCE OF WIRELESS LANs WITH PRIORITIZED MESSAGES

Network Performance Impacts on Operators in Safety-Critical Systems

Evaluating Computer Network Packet Inter-Arrival Distributions

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