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Evaluation of Vertical Handover Performance between WiFi and WiMax Networks using Media Independent Handover

تقييم أداء التسليم الشاقولي بين الشبكاتWIFI و WIMAX باستخدام تقنية التسليم المستقل عن الوسط MIH

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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The current researches are moving towards more development in order to provide the growing the needs of users such as support real-time applications, quality of service, particularly; the high data rate transfer and other. That prompts the network service providers to integrate many properties for different networks resource, and support providing the service "anywhere and anytime". Hence, the importance of this research, which aims to study the vertical handover as very important and necessary step to provide the mobility of mobile nodes between the different networks by using Media Independent Handover (MIH) IEEE802.21standard which is developed in January 2009. In this paper, the performance of vertical handover between these two networks is evaluated taking into account many parameters such as packet loss, handover latency, and throughput, using NS2 simulator (Network Simulator version2) which includes a support for MIH technology by the National Institute of Standard and Technology (NIST).


Artificial intelligence review:
Research summary
تتناول هذه الدراسة تقييم أداء عملية التسليم الشاقولي (Vertical Handover) بين شبكتي WiFi و WiMax باستخدام تقنية التسليم المستقل عن الوسط (Media Independent Handover - MIH) وفقًا لمعيار IEEE 802.21. يهدف البحث إلى تحسين جودة الخدمة واستمرارية الاتصال أثناء انتقال العقدة المحمولة بين الشبكات المختلفة. تم استخدام المحاكي NS2 لإجراء المحاكاة، مع إضافة وحدات دعم MIH من المعهد الوطني للمعايير والتقانة (NIST). تم تقييم الأداء بناءً على عدة معاملات مثل ضياع البيانات، التأخير الناتج عن عملية التسليم، ومعدل التدفق. أظهرت النتائج تحسنًا ملحوظًا في الأداء عند استخدام تقنية MIH مقارنة بعدم استخدامها، حيث تم تقليل زمن التأخير وضياع البيانات بشكل كبير. توصي الدراسة بضرورة تطوير خوارزميات لاتخاذ القرار لاختيار الشبكة الهدف أثناء التسليم، وأهمية دراسة تأثير سرعة العقدة المحمولة على أداء عملية التسليم.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في مجال تحسين أداء الشبكات اللاسلكية وتوفير جودة خدمة أفضل للمستخدمين. ومع ذلك، يمكن الإشارة إلى بعض النقاط التي قد تحتاج إلى مزيد من البحث والتطوير. أولاً، قد يكون من المفيد توسيع نطاق الدراسة لتشمل أنواعًا أخرى من الشبكات اللاسلكية مثل 4G و 5G، مما يعزز من شمولية النتائج. ثانيًا، يمكن تحسين دقة المحاكاة من خلال استخدام أدوات محاكاة أكثر تطورًا أو إجراء تجارب ميدانية حقيقية. أخيرًا، يمكن التركيز على تطوير خوارزميات أكثر تعقيدًا لاتخاذ القرار بشأن التسليم، مما قد يساعد في تحسين الأداء بشكل أكبر.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو تقييم أداء عملية التسليم الشاقولي بين شبكتي WiFi و WiMax باستخدام تقنية التسليم المستقل عن الوسط MIH وفقًا لمعيار IEEE 802.21، بهدف تحسين جودة الخدمة واستمرارية الاتصال أثناء انتقال العقدة المحمولة بين الشبكات المختلفة.

  2. ما هي الأدوات المستخدمة في المحاكاة؟

    تم استخدام المحاكي NS2 لإجراء المحاكاة، مع إضافة وحدات دعم MIH من المعهد الوطني للمعايير والتقانة (NIST).

  3. ما هي المعاملات التي تم تقييمها في الدراسة؟

    تم تقييم الأداء بناءً على عدة معاملات مثل ضياع البيانات، التأخير الناتج عن عملية التسليم، ومعدل التدفق.

  4. ما هي التوصيات التي خلصت إليها الدراسة؟

    توصي الدراسة بضرورة تطوير خوارزميات لاتخاذ القرار لاختيار الشبكة الهدف أثناء التسليم، وأهمية دراسة تأثير سرعة العقدة المحمولة على أداء عملية التسليم.


References used
HAJAR,M.CHAHINE,M. HAMDAN ,R. "Reducing Handover Latency Time in Next Generation Wireless Networks Using IEEE802.21" , Master Thesis, 2013
PAYASWINI, P, MANJAIAH, D.H "Dynamic Vertical Handoff Algorithm Using Media Independent Handover Service for Heterogeneous Network" , MECS I.J. Information Technology and Computer Science, 2014, 12, 46-52
MARQUES, H. RIBEIRO,J. MARQUES, P.; RODRIGUEZ, J." Simulation of 802.21 Handovers Using ns-2" 2010
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في هذه الأطروحة قمنا بدراسة أحد جوانب البحث في الشبكات اللاسلكية الكثيفة و هي إدارة الحركية، و ركزنا على أساليب و طرق إدارة الحركية الموزعة و التي تعتمد على بروتوكولات إدارة الحركية المعيارية MIPv6 و PMIPv6 ، درسنا هذه الطرق مع ذكر إيجابيات و سلبيات كل منها و مقارنتها، ثم قمنا باقتراح خوارزمية جديدة لإدارة الحركية الموزعة بشكل كامل و التي تعتمد على بروتوكول PMIPv6 حيث يكون فيها مستوي البيانات و مستوي التحكم منفصلين و موزعين، و يتم تطبيقها في الشبكات اللاسلكية ذات البنية المسطحة الغير هرمية.
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