Priority based bandwidth allocation scheme for WIMAX systems

Wee, Kuok Kwee; Lee, Sze Wei

doi:10.1109/icbnmt.2009.5347783

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…Then, it moves to next highest queue and continuously this process until all queues are served. The SP algorithm is evaluated in [19].…”

Section: ∑ (1)mentioning

confidence: 99%

A Performance Study of Downlink Scheduling Algorithms in Wireless Broadband Networks

Wee¹,

H²,

Wee³

et al. 2014

JCM

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IEEE 802.16 is also known as WiMAX was developed to produce high performance in Broadband Wireless Access (BWA) systems with a lower deployment cost than wired broadband services. Like other broadband services, IEEE 802.16 is designed to support applications such as Voice over IP (VoIP), video streaming, video conferencing and online gaming. In IEEE 802.16 standard, five types of service classes have been formed to cater the Quality of Service (QoS) needs for different applications. However, the standard does not state any specific scheduling algorithms for either uplink or downlink transmission. Therefore, scheduling algorithm implementations are depending on the vendors, service providers and researchers. In our presented work, an analysis of various available scheduling algorithms in wireless environment has been carried out. Upon the literature study and analysis, Round Robin (RR), Strict Priority (SP), Self-Clock Fair (SC) and Weighted Fair Queuing (WFQ) were tested in downlink scheduling. For each scheduling algorithm, two scenarios were created, 1) 64QAM and 2) the combination of 16QAM & 64QAM. Simulation results indicate that all the schedulers were struggling to perform as the number of Subscriber Station (SS) increases. Furthermore, the impact on having bad quality channel, which is 16QAM, is also one of the reasons that produces poor performance among all the schedulers. Hence, the traditional schedulers are not suitable for the uncertainty condition in wireless environment because they do not satisfy the QoS demand in WiMAX. 

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“…Then, it moves to next highest queue and continuously this process until all queues are served. The SP algorithm is evaluated in [19].…”

Section: ∑ (1)mentioning

confidence: 99%

A Performance Study of Downlink Scheduling Algorithms in Wireless Broadband Networks

Wee¹,

H²,

Wee³

et al. 2014

JCM

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“…In IEEE 802.16, the data transmissions for these service classes are determined by uplink or downlink schedulers. Several IEEE 802.16 compliant scheduling algorithms were proposed in [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Statistical Approach in Bandwidth Granting Process for IEEE 802.16 Networks

Wee

Roslee

Tan

et al. 2012

2012 8th International Conference on Wireless Communications, Networking and Mobile Computing

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IEEE 802.16 is a Wireless Metropolitan Area Network (WMAN) technology that supports both high speed data transmission and quality of service (QoS). Other than the data speed, QoS is always another concern to the end users and applications. However, providing QoS in IEEE 802.16 is a challenging mission because it involved many components that interact with each other. One of the important components in QoS provisioning process is the bandwidth granting process in which the amount of bandwidth to be granted to a SS is determined. Researchers tend to use simple algorithm for this purpose. However, it is found that some refinement in bandwidth granting process would greatly improve the network performance. This paper proposes a statistical approach to improve the bandwidth granting process. Through extensive simulations, the proposed statistical approach is shown to provide better network performance than conventional approach used by other researchers.

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“…Instead of sending separate bandwidth request for each service class, a single request is sent. Service class bandwidth allocation is proposed in (Wee & Lee, 2009). Delay intolerant service classes are provided bandwidth on priority.…”

Section: User Based Bandwidth Allocationmentioning

confidence: 99%