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Register a new userThe adoption of fourth-generation wireless networks using WiMAX technology Implement a wireless network over all Syria
توطين الشبكات اللاسلكية الجيل الرابع باستخدام تقنية WiMAX تطبيق شبكة لاسلكية على كامل الأراضي السورية
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Added by
Syrian Virtual University رسالة ماجستير
Publication date
2015
fields
Administration Science
and research's language is
العربية
Created by
Shamra Editor
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يشكل النطاق العريض اللاسلكي نقطة الالتقاء بين اثنتين من أكثر قصص النمو أهمية في صناعة الاتصالات . حيث حققت خدمات النطاق العريض نجاحاً كبيراً في السنوات الأخيرة وهو الأمر ذاته الذي حصل مع تقنيات الاتصالات اللاسلكية . وقد جاءت تقنية WiMAX كإحدى تقنيات الجيل الرابع للاتصالات لتجمع بين إيجابيات كل من النطاق والاتصال اللاسلكي لتشكل بذلك تقنية واعدة لحل الكثير من مشاكل محدودية نطاق التغطية أو محدودية سرعة نقل البيانات أو التكلفة الزائدة التي تعاني منها معظم التقنيات الحالية لتوفير مختلف خدمات النفاذ إلى الإنترنت .
Wireless Broadband is the meeting point between two of the most important growth stories in telecommunications industry . The broadband technologies have achieved great success in recent years , which is the same thing that happened with wireless communication technologies
Artificial intelligence review:
Research summary
تتناول هذه الدراسة تقنية WiMAX كإحدى تقنيات الجيل الرابع للاتصالات، وتستعرض كيفية توطينها في سوريا لتوفير خدمات الإنترنت عريض النطاق. تقدم الدراسة تصورًا شاملاً لتصميم وتركيب وتشغيل شبكة WiMAX في سوريا، مع دراسة الجدوى الاقتصادية للمشروع. تشمل الدراسة مقارنة بين WiMAX والتقنيات الأخرى المستخدمة حاليًا في سوريا والعالم، وتوضح البنية الهندسية للشبكة وعناصرها الأساسية وآلية ترابطها وتوزعها الجغرافي. كما تجري الدراسة محاكاة لأداء الشبكة باستخدام أداة OPNET v14.5، وتختبر بعض المحددات مثل الإنتاجية والتأخير الزمني والحمل. توصلت الدراسة إلى أن المشروع مجدي اقتصاديًا، حيث أظهرت دراسة الجدوى الاقتصادية أن القيمة الحالية الصافية للمشروع موجبة خلال وبعد خمس سنوات من عمر المشروع.
Critical review
دراسة نقدية: تعتبر هذه الدراسة شاملة ومفصلة، حيث تغطي جميع الجوانب التقنية والاقتصادية لتوطين تقنية WiMAX في سوريا. ومع ذلك، يمكن أن تكون هناك بعض النقاط التي تحتاج إلى مزيد من التوضيح أو التحليل. على سبيل المثال، قد يكون من المفيد تضمين تحليل أعمق للمخاطر المحتملة التي قد تواجه تنفيذ المشروع، مثل التحديات الأمنية أو التحديات المتعلقة بالبنية التحتية. كما يمكن أن تكون هناك حاجة لمزيد من التفاصيل حول كيفية التعامل مع التحديات البيئية والجغرافية في المناطق النائية. بالإضافة إلى ذلك، قد يكون من المفيد تقديم مقارنة أكثر تفصيلًا بين WiMAX والتقنيات الأخرى مثل LTE، لتوضيح الفروقات والميزات بشكل أكثر وضوحًا.
Questions related to the research
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ما هي الأهداف الرئيسية للدراسة؟
تهدف الدراسة إلى التعريف بتقنية WiMAX واستخداماتها، وتقديم تصور شامل لتصميم وتركيب وتشغيل شبكة WiMAX في سوريا، بالإضافة إلى دراسة الجدوى الاقتصادية للمشروع.
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ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟
توصلت الدراسة إلى أن تقنية WiMAX هي تقنية واعدة لحل مشاكل محدودية التغطية وسرعة نقل البيانات والتكلفة الزائدة، وأن المشروع مجدي اقتصاديًا حيث أظهرت دراسة الجدوى الاقتصادية أن القيمة الحالية الصافية للمشروع موجبة خلال وبعد خمس سنوات.
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كيف تم اختبار أداء الشبكة في الدراسة؟
تم اختبار أداء الشبكة من خلال محاكاة باستخدام أداة OPNET v14.5، حيث تم اختبار بعض المحددات مثل الإنتاجية والتأخير الزمني والحمل باستخدام ثمانية سيناريوهات مختلفة.
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ما هي التوصيات التي قدمتها الدراسة؟
أوصت الدراسة ببدء الخطوات العملية لنقل وتوطين تقنية WiMAX في سوريا، وإجراء مشروع تجريبي على نطاق صغير قبل التوسع، وإيلاء الاهتمام الكافي لأعمال المسح الفني لتحديد المتطلبات والإعدادات اللازمة للشبكة.
References used
الاتحاد الدولي للاتصالات , قمة توصيل العالم العربي ( آذار 2012 ) اعتماد تكنولوجيا المعلومات والاتصالات وآفاقها في المنطقة العربية
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Nowadays, wireless networks are spreading more and more. The majority of installed networks have become wireless due to the simplicity of installation; where they do not need an infrastructure. This does not mean that the role of the wired networks i
s being eliminated. Instead, the wireless networks
are considered as a complementary of the wired networks. With all types of networks from personal and local area networks (PAN and LAN) to wide area networks (WAN) especially the Internet,
research has become oriented to focus on the quality of service (QoS) and the integration among all these networks taking into account the Internet which is considered as the backbone for each network that wants to exchange the information with any other network all over the world. In our research, we take into account the quality of service in the broadband networks such as the WiMax network (Worldwide Interoperability for Microwave Access) with IEEE 802.16e standard which covers cities and supports the mobility. This network can be used to interconnect the rural zones with the center of cities, this kind is called point-to-point, or it can be used to cover the cities and is called point-tomultipoint,
The last one is used to interconnect different wireless networks especially the local one which has infrastructure (Wi-fi: Wireless Fidelity) and networks which have many users and called
hotspots. However, the cells of Wi Max in the cities are called hotzones.
We propose a system model that performs the load balancing process between the base stations of WiMax network. This means, the proposed load balancing algorithm exchanges the terminals between the adjacent base stations in order to make the throughput in each base station equals to the throughput
in the others. This will improve the performance of the overall network and increase the available bandwidth for each terminal; in addition, this will increase the number of terminals which can be
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The proposed load balancing system can be centralized; implemented in a centralized server connected
to all base stations or distributed system implemented in each base station. The load balancing algorithm which consists of several steps is placed in a controller that achieves it. The load balancing process and the handover procedure have to be fast enough in order to prevent the adverse effect on
the quality of service especially for the real-time applications users.
Multi hop wireless networks face many challenges basically the
limitation of bandwidth, loss of packets because of many problems
in wireless medium also loss of paths because of the random and
unpredictable movement of wireless nodes, which reduce
the
performance of these networks. Recently, Network coding has been
used as promising technology that achieves the reliable transfer of
data in wireless networks with high throughput. Considering the
efficiency of this technology and with benefiting from both the
same cost paths and the broadcasting property of wireless medium,
a multi transmission mechanism for random linear network coding
has been proposed in multi hop wireless networks, which depends
on multicasting of coded packets on the same cost paths.
The use of wireless sensor networks to monitor and control the precise agriculture is one of the areas which received broad concern in recent times, for the services, facilities and the reliability provided by these networks on the monitoring and con
trol level.
This research contributes to the study of the application of this technique in greenhouses deployed over large areas in our country. It offers solutions for networks of monitoring and control, in real time, and ensures a good performance according to the essential evaluating criteria, such as reducing the time-delay, and increases throughput, increases the delivery ratio of packets, and reduces the number of packets lost along with increased network load.
In order to do that, a number of scenarios are proposed. These scenarios are similar to the reality of the construction and operation of the greenhouses in our region relying on ZigBee technique. Wireless sensors networks of these scenarios have been tested, using simulation in order to make conclusion and recommendations to guide the work while installing such networks in place to work as their best for different areas and a large number of lounges
Wireless Mesh Networks, WMNs, are foreseen to be an alternative to LANs and last- mile access
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and cost efficiency. Security is crucial for WMNs
to be widely accepted as internetworking and access
network technologies. Access control, as a security requirement, is one of the most important pillars that
lay down the foundation for such an acceptance. We identify in this paper the criteria that should be
fulfilled by a viable security solution to control access to WMNs, and specify DUA, a security scheme, that
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many nodes in such a way that any coalition of a predetermined threshold of corrupted nodes or fewer
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Due to the lack of fixed infrastructure, the routing process
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Some studies have improved some of these protocols to support
quality of service for specific environments. This research
identifies and analysis some of these improved protocols.
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