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Dummynet: A Simple Approach to the Evaluation of Network Protocols

by Luigi Rizzo - ACM Computer Communication Review , 1997
"... Network protocols are usually tested in operational networks or in simulated environments. With the former approach it is not easy to set and control the various operational parameters such as bandwidth, delays, queue sizes. Simulators are easier to control, but they are often only an approximate mo ..."
Abstract - Cited by 484 (6 self) - Add to MetaCart
Network protocols are usually tested in operational networks or in simulated environments. With the former approach it is not easy to set and control the various operational parameters such as bandwidth, delays, queue sizes. Simulators are easier to control, but they are often only an approximate

MACAW: A Media Access Protocol for Wireless LAN's

by Vaduvur Bharghavan, et al.
"... In recent years, a wide variety of mobile computing devices has emerged, including portables, palmtops, and personal digital assistants. Providing adequate network connectivity for these devices will require a new generation of wireless LAN technology. In this paper we study media access protocols f ..."
Abstract - Cited by 839 (11 self) - Add to MetaCart
-level simulations, we examine various performance and design issues in such protocols. Our analysis leads to a new protocol, MACAW, which uses an RTS-CTS-DS-DATA-ACK message exchange and includes a significantly different backo algorithm.

A logic of authentication

by Michael Burrows, Martín Abadi, Roger Needham - ACM TRANSACTIONS ON COMPUTER SYSTEMS , 1990
"... Questions of belief are essential in analyzing protocols for the authentication of principals in distributed computing systems. In this paper we motivate, set out, and exemplify a logic specifically designed for this analysis; we show how various protocols differ subtly with respect to the required ..."
Abstract - Cited by 1332 (22 self) - Add to MetaCart
Questions of belief are essential in analyzing protocols for the authentication of principals in distributed computing systems. In this paper we motivate, set out, and exemplify a logic specifically designed for this analysis; we show how various protocols differ subtly with respect to the required

POWER MANAGEMENT IN MOBILE DEVICES BY VARIOUS PROTOCOLS

by Kirtika Goyal
"... Mobile devices are battery powered device. But battery is a limited source of energy depend upon their shape .in this paper various protocols and different power management techniques aiming to reduce power consumption mobile devices are describe. Static techniques, applied at design time, have bee ..."
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Mobile devices are battery powered device. But battery is a limited source of energy depend upon their shape .in this paper various protocols and different power management techniques aiming to reduce power consumption mobile devices are describe. Static techniques, applied at design time, have

Performance Analysis of Various Protocols for Manets through Simulation

by unknown authors
"... Mobile Ad Hoc Network (MANET) is a collection of wireless mobile hosts that communicate with each other without fixed infrastructure and central administration. Routes between two hosts in a MANET may consist of hops through other hosts in the network. Host mobility can cause frequent unpredictable ..."
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topology changes. Many protocols have been proposed for MANETs for efficient routing. The primary goal of routing protocols is to establish route with a minimum of overhead and bandwidth consumption. This paper analyses the performance of various protocols for efficiency (in terms of packet loss

Consensus in the presence of partial synchrony

by Cynthia Dwork, Nancy Lynch, Larry Stockmeyer - JOURNAL OF THE ACM , 1988
"... The concept of partial synchrony in a distributed system is introduced. Partial synchrony lies between the cases of a synchronous system and an asynchronous system. In a synchronous system, there is a known fixed upper bound A on the time required for a message to be sent from one processor to ano ..."
Abstract - Cited by 513 (18 self) - Add to MetaCart
T occurs. Fault-tolerant consensus protocols are given for various cases of partial synchrony and various fault models. Lower bounds that show in most cases that our protocols are optimal with respect to the number of faults tolerated are also given. Our consensus protocols for partially synchronous

Investigating the Energy Consumption of a Wireless Network Interface in an Ad Hoc Networking Environment

by Laura Marie Feeney, Martin Nilsson - In IEEE Infocom , 2001
"... Energy-aware design and evaluation of network protocols requires knowledge of the energy consumption behavior of actual wireless interfaces. But little practical information is available about the energy consumption behavior of well-known wireless network interfaces and device specifications do not ..."
Abstract - Cited by 669 (3 self) - Add to MetaCart
collection of linear equations for calculating the energy consumed in sending, receiving and discarding broadcast and pointto -point data packets of various sizes. Some implications for protocol design and evaluation in ad hoc networks are discussed. Keywords---energy consumption, IEEE 802.11, ad hoc

A Survey on Sensor Networks

by Lan F. Akyildiz, Welljan Su, Yogesh Sankarasubramaniam, Erdal Cayirci , 2002
"... Recent advancement in wireless communica- tions and electronics has enabled the develop- ment of low-cost sensor networks. The sensor networks can be used for various application areas (e.g., health, military, home). For different application areas, there are different technical issues that research ..."
Abstract - Cited by 2002 (1 self) - Add to MetaCart
Recent advancement in wireless communica- tions and electronics has enabled the develop- ment of low-cost sensor networks. The sensor networks can be used for various application areas (e.g., health, military, home). For different application areas, there are different technical issues

Grid Information Services for Distributed Resource Sharing

by Karl Czajkowski , Steven Fitzgerald, Ian Foster, Carl Kesselman , 2001
"... Grid technologies enable large-scale sharing of resources within formal or informal consortia of individuals and/or institutions: what are sometimes called virtual organizations. In these settings, the discovery, characterization, and monitoring of resources, services, and computations are challengi ..."
Abstract - Cited by 712 (52 self) - Add to MetaCart
to incorporate individual entities into various information structures, such as aggregate directories that support a variety of different query languages and discovery strategies. These protocols can also be combined with other Grid protocols to construct additional higher-level services and capabilities

A group mobility model for ad hoc wireless networks

by Xiaoyan Hong, Mario Gerla, Guangyu Pei, Ching-chuan Chiang , 1999
"... In this paper, we present a survey of various mobility models in both cellular networks and multi-hop networks. We show that group motion occurs frequently in ad hoc networks, and introduce a novel group mobility model- Reference Point Group Mobility (RPGM)- to represent the relationship among mobil ..."
Abstract - Cited by 461 (27 self) - Add to MetaCart
indicate that different mobility patterns affect the various protocols in different ways. In particular, the ranking of routing algorithms is influenced by the choice of mobility pattern. 1
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