Efficient uplink scheduling policy for variable bit rate traffic in IEEE 802.16 BWA systems

Yeong Sheng Chen, Der Jiunn Deng, Yu Ming Hsu, Sheng De Wang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

One of the major challenges in the context of transmitting real-time multimedia data in broadband wireless access (BWA) systems is that the varied bit rate of traffic causes low bandwidth utilization. The conventional uplink scheduling algorithms for variable bit rate (VBR) video traffic transmission in IEEE 802.16 BWA systems have some disadvantages, including waste of uplink bandwidth, MAC overhead, and access delay. To cope with these difficulties, we propose an uplink scheduling algorithm for VBR traffic transmission for IEEE 802.16 BWA systems. In the proposed algorithm, the base station (BS) assigns uplink bandwidth to the video user by considering the traffic state transitions. The uplink bandwidth is equally divided into several intervals where each interval represents a traffic state. Only when the traffic state is changed, the bandwidth request process is incurred. Also, by using two reserved bits in the generic MAC header of IEEE 802.16 BWA systems as piggyback bits, the information about traffic state transition can be sent to the BS without extra overhead. Simulations conducted with QualNet 4.0 show that the bandwidth waste ratio of our proposed algorithm is less than that of the conventional algorithms. That is, the proposed algorithm outperforms the conventional algorithms for VBR traffic transmission in IEEE 802.16 BWA systems in terms of bandwidth utilization.

Original languageEnglish
Pages (from-to)734-748
Number of pages15
JournalInternational Journal of Communication Systems
Volume25
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

Fingerprint

Telecommunication traffic
Scheduling
Bandwidth
Scheduling algorithms
Base stations

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

@article{1a7fcf933b0c4822b84095b80bdcf35f,
title = "Efficient uplink scheduling policy for variable bit rate traffic in IEEE 802.16 BWA systems",
abstract = "One of the major challenges in the context of transmitting real-time multimedia data in broadband wireless access (BWA) systems is that the varied bit rate of traffic causes low bandwidth utilization. The conventional uplink scheduling algorithms for variable bit rate (VBR) video traffic transmission in IEEE 802.16 BWA systems have some disadvantages, including waste of uplink bandwidth, MAC overhead, and access delay. To cope with these difficulties, we propose an uplink scheduling algorithm for VBR traffic transmission for IEEE 802.16 BWA systems. In the proposed algorithm, the base station (BS) assigns uplink bandwidth to the video user by considering the traffic state transitions. The uplink bandwidth is equally divided into several intervals where each interval represents a traffic state. Only when the traffic state is changed, the bandwidth request process is incurred. Also, by using two reserved bits in the generic MAC header of IEEE 802.16 BWA systems as piggyback bits, the information about traffic state transition can be sent to the BS without extra overhead. Simulations conducted with QualNet 4.0 show that the bandwidth waste ratio of our proposed algorithm is less than that of the conventional algorithms. That is, the proposed algorithm outperforms the conventional algorithms for VBR traffic transmission in IEEE 802.16 BWA systems in terms of bandwidth utilization.",
author = "Chen, {Yeong Sheng} and Deng, {Der Jiunn} and Hsu, {Yu Ming} and Wang, {Sheng De}",
year = "2012",
month = "6",
day = "1",
doi = "10.1002/dac.1206",
language = "English",
volume = "25",
pages = "734--748",
journal = "International Journal of Communication Systems",
issn = "1074-5351",
publisher = "John Wiley and Sons Ltd",
number = "6",

}

Efficient uplink scheduling policy for variable bit rate traffic in IEEE 802.16 BWA systems. / Chen, Yeong Sheng; Deng, Der Jiunn; Hsu, Yu Ming; Wang, Sheng De.

In: International Journal of Communication Systems, Vol. 25, No. 6, 01.06.2012, p. 734-748.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Efficient uplink scheduling policy for variable bit rate traffic in IEEE 802.16 BWA systems

AU - Chen, Yeong Sheng

AU - Deng, Der Jiunn

AU - Hsu, Yu Ming

AU - Wang, Sheng De

PY - 2012/6/1

Y1 - 2012/6/1

N2 - One of the major challenges in the context of transmitting real-time multimedia data in broadband wireless access (BWA) systems is that the varied bit rate of traffic causes low bandwidth utilization. The conventional uplink scheduling algorithms for variable bit rate (VBR) video traffic transmission in IEEE 802.16 BWA systems have some disadvantages, including waste of uplink bandwidth, MAC overhead, and access delay. To cope with these difficulties, we propose an uplink scheduling algorithm for VBR traffic transmission for IEEE 802.16 BWA systems. In the proposed algorithm, the base station (BS) assigns uplink bandwidth to the video user by considering the traffic state transitions. The uplink bandwidth is equally divided into several intervals where each interval represents a traffic state. Only when the traffic state is changed, the bandwidth request process is incurred. Also, by using two reserved bits in the generic MAC header of IEEE 802.16 BWA systems as piggyback bits, the information about traffic state transition can be sent to the BS without extra overhead. Simulations conducted with QualNet 4.0 show that the bandwidth waste ratio of our proposed algorithm is less than that of the conventional algorithms. That is, the proposed algorithm outperforms the conventional algorithms for VBR traffic transmission in IEEE 802.16 BWA systems in terms of bandwidth utilization.

AB - One of the major challenges in the context of transmitting real-time multimedia data in broadband wireless access (BWA) systems is that the varied bit rate of traffic causes low bandwidth utilization. The conventional uplink scheduling algorithms for variable bit rate (VBR) video traffic transmission in IEEE 802.16 BWA systems have some disadvantages, including waste of uplink bandwidth, MAC overhead, and access delay. To cope with these difficulties, we propose an uplink scheduling algorithm for VBR traffic transmission for IEEE 802.16 BWA systems. In the proposed algorithm, the base station (BS) assigns uplink bandwidth to the video user by considering the traffic state transitions. The uplink bandwidth is equally divided into several intervals where each interval represents a traffic state. Only when the traffic state is changed, the bandwidth request process is incurred. Also, by using two reserved bits in the generic MAC header of IEEE 802.16 BWA systems as piggyback bits, the information about traffic state transition can be sent to the BS without extra overhead. Simulations conducted with QualNet 4.0 show that the bandwidth waste ratio of our proposed algorithm is less than that of the conventional algorithms. That is, the proposed algorithm outperforms the conventional algorithms for VBR traffic transmission in IEEE 802.16 BWA systems in terms of bandwidth utilization.

UR - http://www.scopus.com/inward/record.url?scp=84861832665&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861832665&partnerID=8YFLogxK

U2 - 10.1002/dac.1206

DO - 10.1002/dac.1206

M3 - Article

VL - 25

SP - 734

EP - 748

JO - International Journal of Communication Systems

JF - International Journal of Communication Systems

SN - 1074-5351

IS - 6

ER -