检索结果-内蒙古大学图书馆

International Conference on computer Communications and Networks (ICCCN)

作者： S. Banerjee P.K. Chrysanthis Telecommunications Program University of Pittsburgh Pittsburgh PA USA Computer Science Department University of Pittsburgh Pittsburgh PA USA

Major advances in optical fiber transmission and switching technology have enabled the development of very high speed networks with data rates of the order of gigabits per second. It is anticipated that in the future, wide area gigabit networks will interconnect database servers around the globe creating extremely powerful distributed information systems. In this paper, we examine the implications of such a high speed network on data access and sharing techniques and propose a lock-based concurrency control protocol and a log-based recovery protocol that ensures data consistency in gigabit-networked databases. Both protocols exploit the characteristics of a gigabit network to enhance the performance of the database system and, in particular, the fact that the size of the message is less of a concern than the number of sequential phases of message passing.

关键词： Access protocols High-speed networks Optical fibers Power system interconnection Distributed databases Network servers Ultraviolet sources Distributed information systems Concurrency control Database systems

来源：评论

学校读者我要写书评

暂无评论

A j-bit bus architecture for multimedia local ATM network (MLAN)

A j-bit bus architecture for multimedia local ATM network (M...

引用

MILCOM, Military Communications Conference

作者： U. Varshney J.P. Agrawal Computer Information Sciences Washburn University Topeka KS USA Computer Science Telecommunications Program University of Missouri Kansas City Kansas City MO USA

With the emerging multimedia services, there is a need to support these services in the local area environment. In the last few years, many LAN protocols have been proposed or modified to fulfill this need. One such protocol is multimedia local ATM network (MLAN) protocol that is based on the bidirectional broadcast bus topology. The MLAN, suitable for campus environment, operates in the native ATM mode and does dynamic and fair bandwidth allocation to service multimedia traffic, and, offers connectionless as well as connection oriented service for MLAN-ATM network communication. From the previously published performance results, it is clear that MLAN provides excellent performance for distances from 1 to 3 km. To support applications requiring longer distances, we propose a new j-bit bus architecture for MLAN protocol. In this architecture, a terminal does not require j separate interfaces but is attached to the j-bit bus using one parallel interface. With the j-bit bus architecture, the MLAN can be extended to many times of the original coverage, depending upon the value of j employed. The MLAN protocol's performance has been determined by computer simulation using a multimedia traffic model. Based on the results, the proposed j-bit bus MLAN architecture is well suited for designing high speed multimedia ATM LANs.

关键词： Protocols computer architecture Local area networks Digital multimedia broadcasting Multimedia communication Network topology Channel allocation Telecommunication traffic computer simulation Traffic control

来源：评论

学校读者我要写书评

暂无评论

Routing strategies for fault recovery in wide area packet networks

Routing strategies for fault recovery in wide area packet ne...

引用

MILCOM, Military Communications Conference

作者： K. Balakrishnan D. Tipper D. Medhi ECE Department Clemson University Clemson SC USA Telecommunications Program University of Pittsburgh Pittsburgh PA USA Computer Science Telecommunications University of Missouri Kansas City Kanas MO USA

We present the results of a study of routing algorithms for traffic restoration after a failure in a virtual circuit packet switched wide area network. Standard routing algorithms based on minimizing the steady state network delay may not be appropriate for rerouting the calls after a failure, in view of the transient congestion. We propose alternative routing schemes to reduce the congestion. The results of a simulation study of a 10 node network comparing the performance of the different routing algorithms (i.e., minimum delay, minimum hop, load distribution on paths, load distribution on links) are presented.

关键词： Routing Intelligent networks Packet switching Steady-state Traffic control Switching circuits Circuit simulation Failure analysis Communication system traffic control Circuit testing

来源：评论

学校读者我要写书评

暂无评论

V-NET: a framework for a versatile network architecture to support real-time communication performance guarantees

V-NET: a framework for a versatile network architecture to s...

引用

IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： B. Field T.F. Znati D. Mosse Department of Computer Science University of Pittsburgh Pittsburgh PA USA U S WEST Technologies Boulder CO USA Telecommunications Program University of Pittsburgh Pittsburgh PA USA

The paper proposes a new network architecture, called the versatile network architecture (V-NET), which provides a framework for flexible support of communication requirements in real-time networks. Applications communicate over the V-NET by using simplex end-to-end network connections which support specific real-time and reliability characteristics tailored to meet the application's specified requirements. V-NET differs from other proposed architectures in that it does not assume one specific packet scheduling algorithm or a specific traffic policing mechanism. Instead, the V-NET has been designed to support a variety of packet scheduling algorithms and traffic policing mechanisms. This flexibility is an important design consideration as a real-time network architecture must accommodate existing and future multimedia applications.

关键词： Scheduling algorithm computer architecture Delay effects Bandwidth Contracts Packet switching Monitoring computer science Drives Telecommunication network reliability

来源：评论

学校读者我要写书评

暂无评论

A UNIFIED APPROACH TO NETWORK SURVIVABILITY FOR TELETRAFFIC NETWORKS - MODELS, ALGORITHMS AND ANALYSIS

引用

IEEE TRANSACTIONS ON COMMUNICATIONS 1994年第2-4期42卷 534-548页

作者： MEDHI, D Computer Science Telecommunications Program University of Missouri Kansas City MO USA

In this paper, we address the problem of network survivability by presenting a unified approach where the wide-area circuit-switched teletraffic network and the underlying transmission facility network are considered simultaneously. We assume the backbone circuit-switched teletraffic network to be nonhierarchical with dynamic call routing capabilities. The transmission facility network is considered to be sparse (as is observed for emerging fiber optic networks) and is assumed to be two-arc connected. Our approach addresses the network survivability objective by considering two grade-of-service parameters: one for the traffic network under normal operating condition and the other for affected part of the network under a network failure. We present unified mathematical models and develop heuristic algorithms. We then present computational results to demonstrate the effectiveness of the unified approach.

关键词： Algorithm design and analysis Telecommunication traffic Routing Circuits Traffic control Optical fiber networks Network synthesis Telecommunication switching Cities and towns Spine

来源：评论

学校读者我要写书评

暂无评论

A PROTOCOL FOR ESTABLISHING SECURE COMMUNICATION CHANNELS IN A LARGE NETWORK

引用

IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 1994年第1期6卷 188-191页

作者： HARN, L HUANG, D Computer Science Telecommunications Program University of Missouri Kansas City Kansas City MO USA

Knowledge exchange and information access in a truly distributed network often require transmitting of data through an open media. Consequently, data presented through such an environment are vulnerable to attacks. To minimize such vulnerability, data transformation or encryption/decryption techniques are often utilized among senders and receivers to achieve secure communication. Since data encryption/decryption requires sharing of a secret session key, finding an efficient way to distribute the session key in a large-scale, truly distributed network has been a nontrivial task. This paper presents a protocol for efficiently distributing session keys in such an environment to establish a secure channel. We assume the target network consists of many locally trusted centers, and each center has many users attached to it. The scheme incorporates the public-key distribution concept and the RSA encryption scheme as the basic mathematical tools, but eliminates the storage problem associated with huge public-key files. In addition, the proposed scheme has the added feature of providing the authenticate session key to the two parties in a secure communication.

关键词： PROTOCOL DATA SECURITY RSA PUBLIC KEY ENCRYPTION

来源：评论

学校读者我要写书评

暂无评论

REALIZATION OF AN ARBITRARY PERMUTATION ON A HYPERCUBE

引用

INFORMATION PROCESSING LETTERS 1994年第5期51卷 237-243页

作者： SHEN, XJ HU, Q LIANG, WF Computer Science Telecommunications Program University of Missouri - Kansas City 5100 Rockhill Road Kansas City MO 64110 USA

We present an explicit combinatorial algorithm for constructing a 2-realization for any given permutation on a circuit-switched d-dimensional hypercube (d-cube) such that the total number of directed edges used in the realization (counting every repetition) is bounded by d2(d), the total number of directed edges in the d-cube. As a corollary, this result implies a (2d - 3) step realization on a packet-switched d-cube (d greater than or equal to 3).

关键词： CIRCUIT-SWITCHED NETWORK HYPERCUBE INTERCONNECTION NETWORK PERMUTATION CAPABILITY ALGORITHMS computer ARCHITECTURE

来源：评论

学校读者我要写书评

暂无评论

BUNDLE-BASED DECOMPOSITION FOR LARGE-SCALE CONVEX-OPTIMIZATION - ERROR ESTIMATE AND APPLICATION TO BLOCK-ANGULAR LINEAR-programS

引用

MATHEMATICAL programMING 1994年第1期66卷 79-101页

作者： MEDHI, D 1. Computer Science Telecommunications Program University of Missouri-Kansas City 5100 Rockhill Road 64110 Kansas City Missouri USA

Robinson has proposed the bundle-based decomposition algorithm to solve a class of structured large-scale convex optimization problems. In this method, the original problem is transformed (by dualization) to an unconstrained nonsmooth concave optimization problem which is in turn solved by using a modified bundle method. In this paper, we give a posteriori error estimates on the approximate primal optimal solution and on the duality gap. We describe implementation and present computational experience with a special case of this class of problems, namely, block-angular linear programming problems. We observe that the method is efficient in obtaining the approximate optimal solution and compares favorably with MINOS and an advanced implementation of the Dantzig-Wolfe decomposition method.

关键词： LARGE-SCALE OPTIMIZATION NONSMOOTH OPTIMIZATION BUNDLE METHOD DECOMPOSITION BLOCK-ANGULAR LINEAR programMING

来源：评论

学校读者我要写书评

暂无评论

Introducing connection-oriented service in MLAN to provide seamless interface to ATM networks

Introducing connection-oriented service in MLAN to provide s...

引用

MILCOM, Military Communications Conference

作者： U. Varshney J.P. Agrawal Computer Science Telecommunications Program University of Missouri KS USA

ATM being a connection-oriented technology, there will be a need for connection-oriented service on LANs to be able to provide seamless internetworking between LANs and ATM broadband networks. We present a general technique to provide connection-oriented service on LANs and then show how this technique is incorporated into a recently designed multimedia LAN (MLAN) protocol. The results are presented of a performance evaluation of the MLAN protocol with connection-oriented service.< >

关键词： Intelligent networks Bandwidth Protocols Local area networks Termination of employment Cities and towns Broadband communication computer science Electronic mail Telecommunication traffic

来源：评论

学校读者我要写书评

暂无评论

Supporting connection-oriented service in MLAN protocol

Supporting connection-oriented service in MLAN protocol

引用

IEEE Conference and Exhibition on Global telecommunications (GLOBECOM)

作者： U. Varshney J.P. Agrawal Computer Science Telecommunications Program University of Missouri Kansas City MO USA

With the emerging ATM broadband networks, there will be a need for connectivity between LANs and broadband networks. The possibility of seamless internetworking between these networks has generated a significant research interest in providing connection-oriented service over LANs. Also, the multimedia nature of traffic is likely to necessitate a connection-oriented service for communication among the LAN terminals as well as between a LAN terminal and non-LAN terminals on ATM networks. We present a technique to provide connection-oriented service on LANs employing a bandwidth reservation scheme. Then we show how this technique is incorporated into a multimedia LAN (MLAN) protocol to provide connection-oriented service. The performance of the protocol under connection-oriented service is evaluated and the results are presented.

关键词： Protocols Bandwidth Local area networks Broadband communication Internetworking Termination of employment Cities and towns Telecommunication traffic Intelligent networks computer science

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：