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Enhancement Scheme in Cognitive Radio. A Scheme Design to Reduce Delay in IEEE 802.22 Wireless Regional Area Network for Real and Non-Real time Traffic Delay
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Местонахождение: Алматы | Состояние экземпляра: новый |
Бумажная
версия
версия
Автор: Khaled Humood and Nawfal Al.Zubaidi R.Smith
ISBN: 9783659474088
Год издания: 2013
Формат книги: 60×90/16 (145×215 мм)
Количество страниц: 72
Издательство: LAP LAMBERT Academic Publishing
Цена: 23635 тг
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Аннотация: In this work, a combination of different delay reduction schemes from different papers has been introduced, the first paper [47] argues about performing fine sensing for non-real time traffic, while real time traffic continues transmission in the channel. The second paper [46] argues about performing fine sensing after multiple alarms that have been triggered. Both schemes have combined with applying data rate reservation as well in order to reduce as much as possible this crucial factor of delay for IEEE 802.22 wireless regional area network and to improve the channel utilization. Data rate reservation for real time users has been applied in order to reduce the queuing delay for real time services [47]. The average packet delay for the proposed scheme combination has been analyzed, with both numerical and simulation results. The results show that the scheme combination considerably reduces the average packet delay for both real time and non-real time services and hence satisfies the performance of IEEE 802.22 wireless regional networks.
Ключевые слова: Cognitive Radio, Channel sensing, Energy and feature detection, IEEE 802.22, Quiet period