Member Login

E-mail:    Password:  




 TitleDate AddedCompany
whitepaper Broadcasting Over Switched Single Beam Antennas0000-00-00 University of Cincinnati
  In switched single beam directional antenna model, broadcasting is achieved by sequentially steering the antenna beam across all pre-defined directions resulting in a sweeping delay. This paper studies suggested techniques to alleviate broadcast storm problems in ad hoc networks with directional antennas, point out their shortcomings, and propose two new schemes, namely, the New Enhanced Directional Flooding (NEDF) and the Probabilistic Relay Broadcasting (PRB). The paper thoroughly compares the performance of these protocols with present directional broadcast schemes including omni directional flooding over six, twelve and eighteen antenna beam models. The results indicate that directional broadcasting provides excellent connectivity in the regions of sparse density as compared to omni directional broadcasting.

Tags: Network Technologies, Mobile and Wireless		   
whitepaper Performance of Information Discovery and Message Relaying in Mobile Ad Hoc Networks0000-00-00 Columbia University
  This paper presents 7DS, a novel peer-to-peer resource sharing system. 7DS is an architecture, a set of protocols and an implementation enabling the exchange of data among peers that are not necessarily connected to the Internet. Peers can be either mobile or stationary. The paper focuses on three different facets of cooperation, namely, data sharing, message relaying and network connection sharing. 7DS enables wireless devices to discover, disseminate, and relay information among each other to increase the data access. The paper evaluates via extensive simulations the effectiveness of the system for data dissemination and message relaying among mobile devices with a large number of use mobility scenarios.

Tags: Network Technologies, Mobile and Wireless		   
whitepaper Performance Evaluation of Approximation Algorithms for Multipoint Relay Selection0000-00-00 Macquarie University
  In Mobile Ad hoc NETworks (MANET), the selection of Multipoint Relays provides an efficient routing scheme for efficient broadcast and shortest-path unicast. As such a selection is NP-hard, a heuristic has been designed and effectively implemented in protocols for MANET such as the Optimized Link State Routing protocol (OLSR). This paper introduces other heuristics that consider the impact of collision by exploiting the topological properties of the network (without assuming knowledge of geographic positions or geometric properties). For each heuristic, the paper gives its respective provable guaranteed approximation performance when compared to a solution of optimal value.

Tags: Software Development Tools, Mobile and Wireless		   
whitepaper Modeling the Performance of Flooding in Wireless Multi-Hop Ad Hoc Networks0000-00-00 University of California
  One feature common to most existing routing protocols for wireless mobile ad hoc networks, or MANETs, is the need to flood control messages network-wide during the route acquisition and maintenance process. Flooding of control messages may result in redundant broadcasts and cause serious contention and collision problems in MANETs. This paper develops an analytical model to study the performance of plain- and probabilistic flooding in terms of its reliability and reachability in delivering packets. Reliability is a measure of the total number of packets received by network nodes whereas reachability refers to the total number of unique nodes reached by the flooding process.

Tags: Mobile and Wireless, Software Development Tools		   
whitepaper Partial Topology in an MPR-Based Solution for Wireless OSPF on Mobile Ad Hoc Networks2007-03-15 French National Institute for Research in Computer Science and Control
  Using reduced topology within link state routing has proven to be an efficient way to decrease routing overhead while still providing sufficient route quality. There are various ways to achieve topology reduction, based on different ways to form a backbone in the network - this backbone usually originates from the flooding optimization scheme in use, such as MPR or CDS. In case of mobile ad hoc networks, flooding using MPR backbones is preferable as it is more robust in face of topology changes, compared to flooding using CDS backbones. This text therefore describes several methods to enable the use of reduced topology in wireless OSPF for MANETs, when MPR-based flooding optimizations are used.

Tags: Mobile and Wireless		   
whitepaper How Does Ping Really Work?2006-10-01 Global Knowledge
  Ping is an Internet program that most of us use daily, but do you know how it really works? Gain an understanding of the cycle of processing associated with ping.

Tags: Network Management, Network Technologies, Network Technologies, Network Technologies, Internet and Web, Internet and Web, Internet and Web, LAN - WAN		   
whitepaper Limited Flooding Protocol for Mobile Ad Hoc Networks2006-09-08 University of Guelph
  Mobile ad hoc networks are collections of mobile nodes without any fixed infrastructure or central co-ordinating mechanism for packet routing. Consequently, routing is a challenge. This paper proposes a multipath routing protocol called Limited Flooding. The protocol is fully reactive and does not entail the computation of routing tables. It uses the basic features of flooding but restricts packet propagation by selecting a limited number of links. Discrete-event simulation is used to model ad hoc networks, and the performance of several variations of the protocol is evaluated.

Tags: Mobile and Wireless		   
whitepaper An Automated End-to-End Lecture Capture and Broadcasting System2006-09-01 Association for Computing Machinery
  This paper presents a complete automated end-to-end system that supports capturing, broadcasting, viewing, archiving and searching of presentations. Specifically, this paper describes a system architecture that minimizes the pre- and post-production time, and a fully automated lecture capture system called iCam2 that synchronously captures all contents of the lecture, including audio, video, and presentation material. No staff is needed during lecture capture and broadcasting, so the operational cost of the system is negligible.

Tags: Network Technologies		   
whitepaper Converging ATM/Frame Relay Over MPLS - Solving Control Plane Interworking2005-09-01 IP/MPLS Forum
  The emergence of new standards for Layer 2 transport, new Layer 3 applications, and multiservice interworking over MultiProtocol Label Switching (MPLS) have made MPLS a desirable framework for integrating specialized ATM, Frame Relay, and IP networks into a scalable, converged service infrastructure. Concerted efforts by the MFA Forum and other standards bodies have given MPLS the capabilities that a service provider needs to build a reliable delivery platform for premium voice, video, and data services: agnostic access, standardized encapsulation, predictable QoS, and proven traffic management.

Tags: Network Technologies, LAN - WAN		   
whitepaper Traffic Engineering and Quality of Service in Cisco IP/MPLS Mobile Backbones for Enhanced Network Performance, Service Reliability and Manageability2005-02-01 Cisco Systems
  IP/MPLS can be used by mobile operators as a common backbone for gradually replacing their traditional ATM, Frame Relay, and Time-Division Multiplexing (TDM) networks. This paper describes the IP/MPLS traffic engineering and QoS capabilities in Cisco IOS Software and their use in supporting high-availability voice, data, and video mobile services over a common IP/MPLS backbone built on Cisco products and solutions.

Tags: Network Technologies, LAN - WAN		   

Jump to [1] 2