Channel-Aware Scheduling for QoS and Fairness Provisioning in IEEE 802.16/WiMAX Broadband Wireless Access Systems

Lera, Antonio; Molinaro, Antonella; Pizzi, Sara

doi:10.1109/mnet.2007.4305171

Cited by 72 publications

(53 citation statements)

References 8 publications

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“…A related study, [12], uses simulation to evaluate the impact of using different physical layer frame sizes on both data and multimedia workloads. Other papers that report on the simulation of scheduling algorithms include [13], [14], and [15].…”

Section: Related Workmentioning

confidence: 99%

Performance Characteristics of an Operational WiMAX Network

Westall

Martin

2011

IEEE Trans. on Mobile Comput.

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Abstract-The term WiMAX is used to refer to a collection of standards, products, and service offerings derived from the IEEE 802.16 family of standards for metropolitan area wireless networks. A significant body of published research in the WiMAX domain exists, but the focus of much of it is on the use of analytic or simulation models to evaluate aspects of physical layer protocols, medium access control protocols, or proposed scheduling algorithms. It this paper we describe performance characteristics of an operational WiMAX testbed upon which we were able to conduct controlled experiments in the absence of competing traffic. We characterize latency, throughput, protocol overhead, packet loss, and the impact of WiMAX on TCP dynamics.

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Section: Related Workmentioning

confidence: 99%

Performance Characteristics of an Operational WiMAX Network

Westall

Martin

2011

IEEE Trans. on Mobile Comput.

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“…WF 2 Q, looks for the packet with the smallest virtual finishing time and whose virtual start time has already occurred instead of searching for the smallest virtual finishing time of all packets in the queue. The virtual start time is the time GPS starts to send the packet [43]. Note that in [43], the authors also introduced the concept of flow compensation with leading and lagging flows.…”

Section: A Channel-unaware Schedulersmentioning

confidence: 99%

“…The virtual start time is the time GPS starts to send the packet [43]. Note that in [43], the authors also introduced the concept of flow compensation with leading and lagging flows.…”

Section: A Channel-unaware Schedulersmentioning

confidence: 99%

Scheduling in IEEE 802.16e mobile WiMAX networks: key issues and a survey

So-In

Jain

Al-Tamimi

2009

IEEE J. Select. Areas Commun.

290

182

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Abstract-Interest in broadband wireless access (BWA) has been growing due to increased user mobility and the need for data access at all times. IEEE 802.16e based WiMAX networks promise the best available quality of experience for mobile data service users. Unlike wireless LANs, WiMAX networks incorporate several quality of service (QoS) mechanisms at the Media Access Control (MAC) level for guaranteed services for data, voice and video. The problem of assuring QoS is basically that of how to allocate available resources among users in order to meet the QoS criteria such as delay, delay jitter and throughput requirements. IEEE standard does not include a standard scheduling mechanism and leaves it for implementer differentiation. Scheduling is, therefore, of special interest to all WiMAX equipment makers and service providers. This paper discusses the key issues and design factors to be considered for scheduler designers. In addition, we present an extensive survey of recent scheduling research. We classify the proposed mechanisms based on the use of channel conditions. The goals of scheduling are to achieve the optimal usage of resources, to assure the QoS guarantees, to maximize goodput and to minimize power consumption while ensuring feasible algorithm complexity and system scalability.

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“…Thus, it is important to take into account the polling mechanisms and also the scheduling mechanisms to guarantee the QoS for the applications. However, most of the previous studies [20][21][22][23] take into account only the scheduling mechanisms. The scheduling algorithm proposed in this study differs from these previous studies mainly because it interacts with the polling mechanisms aiming at adjusting the interval polling dynamically, and then to guarantee the QoS requirements to the real-time and non-real-time applications.…”

Section: Related Workmentioning

confidence: 99%

A new and efficient adaptive scheduling packets for the uplink traffic in WiMAX networks

Teixeira

Guardieiro

2011

J Wireless Com Network

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In this article, an adaptive scheduling packets algorithm for the uplink traffic in WiMAX networks is proposed. The proposed algorithm is designed to be completely dynamic, mainly in networks that use various modulation and coding schemes (MCSs). Using a cross-layer approach and the states of the uplink virtual queues in the base station, it was defined a new deadlines-based scheme, aiming at limiting the maximum delay to the real-time applications. Moreover, a method which interacts with the polling mechanisms of the base station was developed. This method controls the periodicity of sending unicast polling to the real-time and non-real-time service classes, in accordance with the quality of service requirements of the applications. The proposed algorithm was evaluated by means of modeling and simulation in environments where various MCSs were used and also in an environment where only one type of MCS was used. The simulations showed satisfactory results in both environments.

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Channel-Aware Scheduling for QoS and Fairness Provisioning in IEEE 802.16/WiMAX Broadband Wireless Access Systems

Cited by 72 publications

References 8 publications

Performance Characteristics of an Operational WiMAX Network

Performance Characteristics of an Operational WiMAX Network

Scheduling in IEEE 802.16e mobile WiMAX networks: key issues and a survey

A new and efficient adaptive scheduling packets for the uplink traffic in WiMAX networks

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