Quality of service scheduling in cable and broadband wireless access systems

Hawa, Mohammed; Petr, D.W.

doi:10.1109/iwqos.2002.1006593

Cited by 97 publications

(73 citation statements)

References 12 publications

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“…Table VI provides a comparison of these mechanisms. The optimal way to request the bandwidth for a given QoS requirement is still in open research area [20], [21], [22], [23], [24], [25], [26], [27], [28], [29].…”

Section: F Request/grant Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

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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Section: F Request/grant Mechanismmentioning

confidence: 99%

“…The ratio of a connection's average data rate to the total average data rate can be used to determine the weight of the connection [45]. The minimum reserved rate can be used as the weight [35]. The pricing can be also used as a weight [46].…”

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

View full text Add to dashboard Cite

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“…An uplink scheduling architecture based on requests deadlines is proposed [12]. [13] Detailed a deficit fair priority queue scheduling algorithm, which is deployed to cater for the different types of traffic flows for both uplink and downlink traffic.…”

Section: Related Workmentioning

confidence: 99%

An Enhanced Service Flow Management Scheme for IEEE 802.16 Broadband Wireless Access Systems

Musau¹,

Kipkorir²,

Mwamafundo³

2012

IJCTE

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Abstract-While the protocols have been proposed to support QoS (quality of service) guarantees for a variety of applications, the WiMax/IEEE 802.16 standard does not specify a mandatory scheduling architecture to fulfill stringent QoS requirement for the different classes of traffic. Only the framework is established in the standard which provides an opportunity for developers to design efficient scheduling mechanism to fulfill stringent QoS requirement for the different classes of traffic. The scheduling scheme requires catering for rigorous QoS guarantee for all types of service flows as specified in the standard, enabling fairness and facilitating the traffic of lower priority. In this paper, we propose a Service Flow Management Scheme for the IEEE 802.16 Broadband Wireless Access systems that can provide QOS support that enhances performance through a scheduler that performs optimally and efficiently.

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“…In [9], the suggested uplink scheduling algorithm is Weighted Round Robin (WRR) [10] with GPSS grant mode. The duration of contention slots and uplink data slots are dynamically circulated according to bandwidth requirements.…”

Section: Literature Survey 31 Design Of Qos or Scheduling Architecturementioning

confidence: 99%