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YENİ ROTALAMA ALGORİTMALARININ 802.16j AĞI ETKİN ÇIKTI ORANI ARTIRIMINA DÜŞÜK ARAÇ HIZLARI ALTINDAKİ ETKİLERİ

Effects of Novel Routing Algorithms on Throughput Improvement of 802.16j Network For Low Vehicular Velocities

Journal Name:

  • Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2011

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Improvement of the multimedia throughput of IEEE 802.16j network is provided by improving the performances of route life time, amount of disconnected periods, average hop count and packet loss rate, using cognitive methods. For this purpose, a novel access method called Most Congested Access First (MCAF) is proposed to decrease the packet loss rate and improve the system throughput. It is shown by comparing the re-sults with the ones evaluated in the literature and with the theoritical results evaluated in this work that, MCAF, which is used in addition to OFDMA and TDMA methods, improves the system throughput by working together with other proposed Spectral Aids (SA) and Buffer Management (BM) methods. It is finally shown in this study that, more throughput improvement is provided when the proposed MCAF, BM and SA methods are used toget-her with AEABR and ATAABR algorithms for different number of nodes with respect to other routing algo-rithms. The novel proposed methods work with an ad-hoc signaling channel that can be sustained by the mobile nodes for distributed network management.
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Abstract (Original Language): 
Çoklu ortam verileri içeren kablosuz gezgin ağlarda, yeni bilişsel yöntemler ve rotalama algoritmaları kullanılarak, sistemdeki rota ömrü, bağlantı kesinti miktarı, ortalama sekme sayısı ve paket kaybı gibi perfor-mans parametrelerinin iyileştirilmesiyle, IEEE 802.16j ağ yapısının etkin çıktı oranının arttırılması sağlanmıştır. Bu amaçla, mevcut IEEE 802.16j ağında kullanılmakta olan OFDMA ve TDMA erişim tekniklerine ek olarak kullanılmak üzere önerilen, En Çok Sıkışan İlk Erişir (MCAF), Spektrumsal Yardımlaşma (SA) ve Arabellek Yönetimi (BM) metotları ile 802.16j ağında etkin çıktı oranı artırımı için elde edilen simülasyon sonuçları, elde edilen teorik sonuçlarla ve literatürde elde edilmiş olan diğer çalışmaların sonuçlarıyla kıyaslanarak doğrulan-mıştır. Bu çalışmada ayrıca, önerilen AEABR (Erişebilirlik Tabanlı Rotalama Alternatif Geliştirimi) ve ATAABR (Erişilebilirlik Tik Ortalamalı Erişebilirlik Tabanlı Rotalama) isimli yeni uzun ömürlü rotalama algo-ritmalarının, geliştirilen etkin çıktı oranı yükseltimi metotlarıyla birlikte uygulanmasıyla, diğer rotalama algorit-malarına göre, daha da yüksek etkin çıktı oranları elde ettikleri gösterilmiştir. Önerilen yeni metotlar, dağınık ağ yapılarının, gezgin düğümler tarafından, anlık plansız sinyalleşme ile yönetimine dayanarak çalışmaktadır.
FULL TEXT (PDF): 
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  • 1
127-146
  • Turkish

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