نتایج جستجو برای: mobility model

تعداد نتایج: 2183898  

2005
Hans-Martin Zimmermann Ingo Gruber Christian Roman

Mobility models are one piece in a chain of models, which are used to simulate mobile communication networks. Thereby, mobility models are generated to create typical movement patterns for nodes in a given environment. The following paper proposes a new mobility model for urban areas. The model contains movement channels, which are calculated by the multiple application of Voronoi graphs. The c...

Journal: :Telecommunication Systems 2013
Md. Shohrab Hossain Mohammed Atiquzzaman

Increasing demand for mobility in wireless data network has given rise to various mobility management schemes. Most of the analysis on mobility protocols used Random Waypoint mobility model However, the analysis done earlier ignored some major costs, resulting in an incomplete estimation and used random waypoint model which fails to represent realistic movement pattern. In this paper, we have d...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - پژوهشکده علوم انسانی و اجتماعی 1391

abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...

2009
Mauro Conti Roberto Di Pietro Andrea Gabrielli Luigi V. Mancini Alessandro Mei

Mobile Ad Hoc networks are subject to some unique security issues that could delay their diffusion. Several solutions have already been proposed to enforce specific security properties. However, mobility pattern nodes obey to can, on one hand, severely affect the quality of the security solutions that have been tested over ”synthesized” mobility pattern. On the other hand, specific mobility pat...

2015
Shayla Islam Aisha-Hassan A. Hashim Mohamed Hadi Habaebi Suhaimi A. Latif Mohammad Kamrul Hasan

In real world scenarios, there is an increasing concern in placement as well as assessment of mobility management protocols for Network Mobility (NEMO). Mobility models have a substantial impact on the performance evaluation of any new mobility management protocol in NEMO. A considerable assessment of any protocol and comparison with other equivalent protocol cannot be completed without making ...

رضا ثابت داریانی , , صبا خدیویان آذر, ,

In this simulation model, oblique angle deposition method and Monte Carlo random walks have been used. Growth model was ballistic deposition (BD). Incident particles flux comes to substrate at an angle with respect to normal. Two physical factors including self-shadowing and mobility limitation of incident particles make structures similar to independent columns with different shapes and separa...

Journal: :JCM 2014
Aarti Munjal William Navidi Tracy Camp

—Movement patterns of mobile nodes significantly affect the performance of a Mobile Ad hoc Network (MANET) routing protocol. Thus, it is essential that the mobility traces generated by a mobility model closely match the trace data collected from experiments. In addition, the probability distribution of mobile nodes (over the simulation area) varies with time before it comes to a steady-state. ...

2009

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2003
MoonBae Song JeHyok Ryu SangKeun Lee Chong-Sun Hwang

What is important in location-aware services is how to track moving objects efficiently. To this end, an efficient protocol which updates location information in a location server is highly needed. In fact, the performance of a location update strategy highly depends on the assumed mobility pattern. In most existing works, however, the mobility issue has been disregarded and too simplified as l...

2005
Qing Q. C. Cao

A good mobility model can help researchers to study the user mobility issues in many areas (wireless LAN context switching). In this paper, we propose a new framework for constructing a realistic mobility model incorporating decision and operation models. We use the revised social force model to simulate the realistic mobile users’ movements and artificial neural networks (ANN) models to create...

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