On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler

Packet scheduling has drawn a great deal of attention in the field of wireless networks as it plays an important role in distributing shared resources in a network. The process involves allocating the bandwidth among users and determining their transmission order. In this paper an uplink (UL) schedu...

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Published in:Modelling and Simulation in Engineering
Main Author: Ali D.M.; Dimyati K.
Format: Article
Language:English
Published: Hindawi Limited 2010
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952921813&doi=10.1155%2f2010%2f804939&partnerID=40&md5=49df7f38117ddb023960d1af3dad254b
id 2-s2.0-79952921813
spelling 2-s2.0-79952921813
Ali D.M.; Dimyati K.
On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
2010
Modelling and Simulation in Engineering
2010

10.1155/2010/804939
https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952921813&doi=10.1155%2f2010%2f804939&partnerID=40&md5=49df7f38117ddb023960d1af3dad254b
Packet scheduling has drawn a great deal of attention in the field of wireless networks as it plays an important role in distributing shared resources in a network. The process involves allocating the bandwidth among users and determining their transmission order. In this paper an uplink (UL) scheduling algorithm for the Mobile Worldwide Interoperability for Microwave Access (WiMAX) network based on the cyclic polling model is proposed. The model in this study consists of five queues (UGS, ertPS, rtPS, nrtPS, and BE) visited by a single server. A threshold policy is imposed to the nrtPS queue to ensure that the delay constraint of real time traffic (UGS, ertPS, and rtPS) is not violated making this approach original in comparison to the existing contributions. A mathematical model is formulated for the weighted sum of the mean waiting time of each individual queues based on the pseudo-conservation law. The results of the analysis are useful in obtaining or testing approximation for individual mean waiting time especially when queues are asymmetric (where each queue may have different stochastic characteristic such as arrival rate and service time distribution) and when their number is large (more than 2 queues). Copyright © 2010. D. Mohd Ali and K. Dimyati.
Hindawi Limited
16875591
English
Article
All Open Access; Gold Open Access
author Ali D.M.; Dimyati K.
spellingShingle Ali D.M.; Dimyati K.
On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
author_facet Ali D.M.; Dimyati K.
author_sort Ali D.M.; Dimyati K.
title On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
title_short On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
title_full On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
title_fullStr On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
title_full_unstemmed On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
title_sort On the modelling of the mobile WiMAX (IEEE 802.16e) Uplink Scheduler
publishDate 2010
container_title Modelling and Simulation in Engineering
container_volume 2010
container_issue
doi_str_mv 10.1155/2010/804939
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952921813&doi=10.1155%2f2010%2f804939&partnerID=40&md5=49df7f38117ddb023960d1af3dad254b
description Packet scheduling has drawn a great deal of attention in the field of wireless networks as it plays an important role in distributing shared resources in a network. The process involves allocating the bandwidth among users and determining their transmission order. In this paper an uplink (UL) scheduling algorithm for the Mobile Worldwide Interoperability for Microwave Access (WiMAX) network based on the cyclic polling model is proposed. The model in this study consists of five queues (UGS, ertPS, rtPS, nrtPS, and BE) visited by a single server. A threshold policy is imposed to the nrtPS queue to ensure that the delay constraint of real time traffic (UGS, ertPS, and rtPS) is not violated making this approach original in comparison to the existing contributions. A mathematical model is formulated for the weighted sum of the mean waiting time of each individual queues based on the pseudo-conservation law. The results of the analysis are useful in obtaining or testing approximation for individual mean waiting time especially when queues are asymmetric (where each queue may have different stochastic characteristic such as arrival rate and service time distribution) and when their number is large (more than 2 queues). Copyright © 2010. D. Mohd Ali and K. Dimyati.
publisher Hindawi Limited
issn 16875591
language English
format Article
accesstype All Open Access; Gold Open Access
record_format scopus
collection Scopus
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