Abstract Wireless local area networks (WLANs) have been rapidly developed in recent years. It is used for various applications. VoWLAN, which transmits VoIP data over WLANs, shows its amazing attraction and constitutes one of the most flourishing applications nowadays in WLANs. One of Wireless Local Area Networks (WLAN) main drawbacks, when compared to wired networks, is that WLANs are less predictable and efficient. Wireless physical medium is harder to be controlled than physical wire. WLAN medium is also unlicensed, and thus susceptible to interferences produced by other devices. Therefore, great effort is being done in order to obtain Quality of Service (QoS) in real-time voice communications using WLANs. This topic has opened plenty of new research lines to upgrade current WLAN standards. In this thesis, a study is carried out for the behavior of new Medium Access Control (MAC) protocols defined in IEEE 802.11e draft standard Enhanced Distributed coordination function EDCF as well as for its subsequent modified versions. The Adaptive Enhanced Distributed coordination function AEDCF, designed to support QoS when providing voice communication services between stations in WLAN. Also presents experimental results obtained from simulations, and compare our results with simulations made using IEEE 802.11 standard MAC. The simulation work was done using NS-2 simulator, with the addition of specific modules for 802.11e. A performance comparison is carried out between the modified MAC scheme and IEEE standard MAC scheme, using Experimental simulation models. It is found that the adaptive technique method not only increases the medium utilization ratio and lowers the collision rate by more than 50%, but also enhances vii the overall throughput by around 20% compared with the basic IEEE 802.11DCF technique.
حسين ابراهيم ازويه (2010)

تعطي هذه الاطروحة خلفية عن أجهزة الموبيل , الشبكات الاسلكية, تطبيقات الشبكات الاسلكية والانترنت موبايل كما أعطت خلفية عن تطيبقات البرتوكولات اللاسلكية والبنية التحتية للوب وذلك لتحديث تطيبقات الموبايل باستخدام لغة HTML واللغات الجديدة مثل WML و XML الناطقة. ولقد افترضت الاطروحة ان هناك معرفة مسبقة بلغات تصميم صفحات الويب وهي HTML و XHTML وتطرقت الى بعض المبادئ للغة JSP.إن المعضلة هذه الايام تكمن في كيفية التحادث بين اللغات المختلفة للانترنت وايصالها الى الاجهزة المتنوعة مثل PC Browser – PDA – أو أجهزة النقال المختلفة ، وتعزى هذه المشكلة الى وجود اختلافات في قدرة الاجهزة من حيث حجم الشاشة وقدرة استقبالها للوسائط المتعددة (الصوت والصورة والفلاش).ولحل هذه المشكلة سوف نقوم باستخدام قاعدة بيانات تحتوى جميع قدرات الاجهزة المعلوماتية وسوف يتم ذلك عن طريق استخدام (Mobile Aware Software) وهو قاعدة بيانات شاملة تحتوى على اكثر من 500 جهاز بأقسامه ، وقد تم تنفيذ هذه الطريق بتصميم صفحة أنترنت للكمبيوتر وإدخال بعض الاضافات وبعض الخطوات البسيطة لاتاحة نقل هذه الصفحة وعرضها في الاجهزة النقالة المختلفة.وتم اثبات وتحقيق هذا الحل عن طريق استخدام موقع لقسم الهندسة الكهربائية والالكترونية والذى تم تحويله الى اجهزة مختلفة ولاحظنا الاختلافات التى طرأت على الموقع ، وبهذه الطريقة نستطيع الان نقل أي موقع الى اي جهاز أخر في دقائق معدودة بدون اللجوء الى لغات معقدة او ملفات كبيرة. Abstract This thesis provides some background on mobile devices, wireless networks, mobile internet and wireless application networks and some back ground about wireless application protocol, web infrastructure for mobile application development using HTML, and newer markup language such as wireless markup language (WML) and Voice XML.It assumes that the web page designs using HTML and XHTML are already know. It also provides some background on basic JSP.The Conversion between Internet languages and delivering them to multiple devices is problem now days, for example PC browser, PDA and Mobile Phone Devices. This is due to differences in device capability and requirements including Markup language and screen size and media capabilities ((images flash, audio)).To solve the problem we will use data store which is contain all device capability information’s ,by using the Mobile Aware software to provides a comprehensive device database containing more than 500 devices and device classes, and it’s done by design a normal webpage for PC Browser and inserting some tag and adding a few simple steps to provides the possibility of transfer the web site internet to multi devices such as PDA, Mobile devices. It was demonstrated by using real web site for Electrical & Electronic department which is transferred to different devices, and we have noted changes that took place for the web site, and now we are able to transfer any web site to any device in few minutes without having to know a complicated language or large files.
ميسون عمر كريم (2006)

In this paper, we present an analytical traffic model for the Universal Mobile Telecommunication Systems (UMTS). In 3G networks we have dynamic capacity that depends on the interference levels in the covered area and the number of active users. This implies that the distance of the mobile user from the base station is also an important factor because of the signal fading. The first part of this paper is an algorithm written in c++ programming language that distributes users in different zones assuming that the cell area is virtually divided into Z zones depending on the number of users. The last part of this paper we build a mathematical model of a 3G cell using the above assumption , and to prove, that the product form holds in the case of two cells with uniform and non uniform traffic. By this result more complicated networks can be analyzed, to calculate the performance measures of the network.
wael s. Abughres, Mike E. Woodward(3-2006)