Packet scheduling for QoS support in IEEE 802.16 broadband wireless access systems

Wongthavarawat, Kitti; Ganz, Aura

doi:10.1002/dac.581

Cited by 369 publications

(270 citation statements)

References 10 publications

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“…There were many researches discussed the QoS architecture (since it is not specified clearly by IEEE 802.16 series specifications) and resource allocation for WiMAX networks, some of the papers designed admission control mechanism by considering delay constrain [3]- [10]. In view of related studies, those methods proposed by references [8]- [10] were similar to our work.…”

supporting

confidence: 52%

“…bandwidth degrade) and reassigned excess bandwidth to incoming connections (bandwidth upgrade), and is abbreviated as BDR_CAC. In addition to resolving the issues in [3]- [5], effectively increasing radio resource utilization and decreasing blocking and dropping probabilities for IEEE 802.16e/Mobile WiMAX networks with QoS support, are the major concerns of the study.…”

mentioning

confidence: 99%

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Adaptive Admission Control with Bandwidth Quantization and Dynamic Reallocation for Mobile WiMAX

Ke¹,

Wu²,

Jayasakthi³

et al. 2013

IJFCC

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Abstract-The paper utilized the idea of bandwidth quantization and proposed a dynamic and adaptive bandwidth reallocation for admission control in mobile WiMAX networks. Based upon four QoS mechanisms (excluding the best effort), adaptively degrade and recover bandwidth to an existing user may improve the system performance but with tradeoff of complexity. Hand over and new calls were taken into account. The paper did analytical evaluations with multidimensional Markov chain; bandwidth utilization and blocking/dropping probability were the performance indices for comparison. The results presented that the utilization was increased and those probabilities were reduced simultaneously.Index Terms-QoS, adaptive admission control, bandwidth quantization and reallocation, hand over

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supporting

confidence: 52%

mentioning

confidence: 99%

Adaptive Admission Control with Bandwidth Quantization and Dynamic Reallocation for Mobile WiMAX

Ke¹,

Wu²,

Jayasakthi³

et al. 2013

IJFCC

View full text Add to dashboard Cite

show abstract

“…The last three terms in (12) can be easily obtained from the Probability Mass Function(pmf) of Binomial random variables [17]. That is,…”

Section: ];mentioning

confidence: 99%

“…IEEE 802.16 standard left the scheduling algorithm for the uplink and downlink scheduling algorithm undefined. Wongthavarawat and Ganz in [17] proposed a combination of strict priority scheduling, Earliest Deadline First [19] and WFQ [4]. The CBR real-time traffic, (UGS) has preemptive priority over other type of flows.…”

Section: Introductionmentioning

confidence: 99%

Examining QoS Guarantees for Real-Time CBR Services in Broadband Wireless Access Networks

Zhou

Zhang

2011

Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing 2011

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Abstract-A wide range of emerging real-time services (e.g. VoIP, video conferencing, video-on-demand) require different levels of Quality of Services (QoS) guarantees over wireless networks. Scheduling algorithms play a key role in meeting these QoS requirements. A distinction of QoS guarantees is made between deterministic and statistical guarantees. Most of research in this area have been focused on deterministic delay bounds and the statistical bounds of differentiated real-time services are not well known. This paper provides the mathematical analysis of the statistical delay bounds of different levels of Constant Bit Rate (CBR) traffic under First Come First Served with static priority (P-FCFS) scheduling. The mathematical results are supported by the simulation studies. The statistical delay bounds are also compared with the deterministic delay bounds of several popular rate-based scheduling algorithms. It is observed that the deterministic bounds of the scheduling algorithms are much larger than the statistical bounds and are overly conservative in the design and analysis of efficient QoS support in wireless access systems.

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“…However, in most related research works [4,5] emphasis is on UL scheduling. To the best of our knowledge, [3] is the only research work that has proposed a scheduling algorithm considering simultaneously uplink and downlink bandwidth allocation.…”

Section: Introductionmentioning

confidence: 99%

An Adaptive QoS Architecture for IEEE 802.16 Broadband Wireless Networks

Msadaa

Kamoun

Filali

2007

2007 IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems

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In this paper, we propose a new QoS architecture for PMP 802.16 systems operating in TDD mode over WirelessMAN-OFDM physical layer. It includes a call admission control policy and a hierarchical scheduling algorithm. The CAC policy we propose adopts a Min-Max fairness approach making efficient and fair use of available resources. The proposed scheduling algorithm flexibly adjusts uplink and downlink bandwidth to serve unbalanced traffic while considering adaptive modulation and coding (AMC) scheme. The efficiency of the proposed QoS architecture is revealed through simulation.

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Packet scheduling for QoS support in IEEE 802.16 broadband wireless access systems

Cited by 369 publications

References 10 publications

Adaptive Admission Control with Bandwidth Quantization and Dynamic Reallocation for Mobile WiMAX

Adaptive Admission Control with Bandwidth Quantization and Dynamic Reallocation for Mobile WiMAX

Examining QoS Guarantees for Real-Time CBR Services in Broadband Wireless Access Networks

An Adaptive QoS Architecture for IEEE 802.16 Broadband Wireless Networks

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