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Topic Area: Telcommunications/Wireless
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Displaying records 51 to 60 of 86 records.
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51. Optimizing Authentication in Media Independent Handovers using IEEE 802.21
Topic: Telcommunications/Wireless
Published: 8/6/2009
Authors: Antonio Izquierdo Manzanares, Nada T Golmie, Richard Antoine Rouil
Abstract: In this paper we study the performance of the authentication process in media independent handovers, and consider the impact of using IEEE 802.21 link triggers to achieve seamless mobility. We describe all interactions between the 802.21 services and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890070

52. PBX Vulnerability Analysis: Finding Holes in Your PBX Before Someone Else Does
Series: Special Publication (NIST SP)
Report Number: 800-24
Topic: Telcommunications/Wireless
Published: 4/1/2001
Author: David R Kuhn
Abstract: This report presents a generic methodology for conducting an analysis of a Private Branch Exchange (PBX) in order to identify security vulnerabilities. The report focuses on digital-based PBXs and addresses the following areas for study: System Arc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151223

53. Performance Evaluation of a Secure Mac Protocol for Vehicular Networks
Topic: Telcommunications/Wireless
Published: 11/17/2008
Authors: Yi Qian, Kejie Lu, Nader Moayeri
Abstract: The main benefit of vehicular communication is seen in active safety systems that increase passenger safety by exchanging warning messages between vehicles. Other applications and private services are also permitted in order to lower the cost and to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900128

54. Performance Metrics for IEEE 802.21 Media Independent Handover (MIH) Signaling
Topic: Telcommunications/Wireless
Published: 3/2/2009
Authors: David Wesley Griffith, Richard Antoine Rouil, Nada T Golmie
Abstract: The IEEE 802.21 Media Independent Handover (MIH) working group is developing a set of mechanisms to facilitate migration of mobile users between access networks that use different link-layer technologies. Among these are mobility managers that create ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51260

55. Performance of Amplify-and-Forward and Decode-and-Forward Relaying in Rayleigh Fading With Turbo Codes
Topic: Telcommunications/Wireless
Published: 5/1/2006
Authors: Michael R Souryal, B R Vojcic
Abstract: Cooperative transmission, in which a source and relay cooperate to send a message to a destination, can provide spatial diversity against fading in wireless networks. We derive analytical expressions for the error probability of amplify-and-forward ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151153

56. Policy-based Scanning with QoS Support for Seamless Handovers in Wireless Networks
Topic: Telcommunications/Wireless
Published: 4/28/2009
Author: Nada T Golmie
Abstract: Supporting seamless handovers between different wireless networks is a challenging issue. One of the most important aspects of a seamless handover is finding a target network and point of attachment (PoA). This is achieved by performing a so-called c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901702

57. Predictive Handover Mechanism based on Required Time Estimation in Heterogeneous Wireless Networks
Topic: Telcommunications/Wireless
Published: 11/17/2008
Authors: Sang J. Yoo, David E Cypher, Nada T Golmie
Abstract: In most conventional layer 2 triggering approaches, a pre-defined threshold for a specific perspective such as the received signal strength is used. This may cause too late or too early handover executions. In this paper we propose a new predictive h ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51262

58. Probabilistic Call Admission Control Algorithm for WLAN in a Heterogeneous Wireless Environment
Topic: Telcommunications/Wireless
Published: 4/30/2009
Authors: Nicolas Chevrollier, David Wesley Griffith, Nada T Golmie, SuKyoung Lee, Kyungsoo Kim, Hong Kunho, YoonHyuk Kim
Abstract: In an integrated WLAN and cellular network, if all mobile users whose connections originate in the cellular network migrate to the WLAN whenever they enter the double coverage area, the WLAN will be severely congested and its users will suffer from p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50827

59. Providing Disruption QoS in an OFDM System Using Residual Idle Time Based Opportunistic Spectrum Access
Topic: Telcommunications/Wireless
Published: 12/3/2013
Authors: Anirudha Sahoo, Michael R Souryal, Mudumbai Ranganathan
Abstract: Dynamic spectrum access (DSA) is emerging as a promising technology to mitigate spectrum scarcity caused by static frequency allocation. Among the different models proposed for DSA, opportunistic spectrum access (OSA) is a promising class of solut ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914483

60. Quantize-and-Forward Relaying with M-ary Phase Shift Keying
Topic: Telcommunications/Wireless
Published: 3/31/2008
Authors: Michael R Souryal, Huiqing You
Abstract: Using cooperative transmission, two or more single-antenna users can share their antennas to achieve spatial diversity in a slow fading channel. One relaying protocol that achieves diversity, amplify-and-forward (AF), is striking in its simplicity, b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51311



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