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An enhanced dynamic transmission opportunity scheme to support varying traffic load over wireless campus networks

May, Zazilah ; Alam, M. K ; Husain, Khaleel ; Hasan, Mohammad Kamrul Debiao, He

PloS one, 2020-08, Vol.15 (8), p.e0238073-e0238073 [Periódico revisado por pares]

San Francisco: Public Library of Science

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Título:
An enhanced dynamic transmission opportunity scheme to support varying traffic load over wireless campus networks
Autor: May, Zazilah ; Alam, M. K ; Husain, Khaleel ; Hasan, Mohammad Kamrul
Debiao, He
Assuntos: Access control ; Bandwidth ; Bandwidths ; Computer and Information Sciences ; Computer simulation ; Design and construction ; Engineering and Technology ; Estimation ; Internet traffic ; Load distribution ; Management ; Multimedia ; Packet transmission ; Physical Sciences ; Protocol ; Quality of service ; Quality of service (Computer networks) ; Queues ; Research and Analysis Methods ; Resource allocation ; Size estimation ; Social Sciences ; TCP/IP (Network protocols) ; Threshold limits ; Traffic flow ; Transmission Control Protocol/Internet Protocol (Computer network protocol) ; Vibration ; Wireless LANs ; Wireless local area networks (Computer networks) ; Wireless networks
É parte de: PloS one, 2020-08, Vol.15 (8), p.e0238073-e0238073
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Competing Interests: The authors have declared that no competing interests exist.
Descrição: Transmission opportunity (TXOP) is a key factor to enable efficient channel bandwidth utilization over wireless campus networks (WCN) for interactive multimedia (IMM) applications. It facilitates in resource allocation for the similar categories of multiple packets transmission until the allocated time is expired. The static TXOP limits are defined for various categories of IMM traffics in the IEEE802.11e standard. Due to the variation of traffic load in WCN, the static TXOP limits are not sufficient enough to guarantee the quality of service (QoS) for IMM traffic flows. In order to address this issue, several existing works allocate the TXOP limits dynamically to ensure QoS for IMM traffics based on the current associated queue size and pre-setting threshold values. However, existing works do not take into account all the medium access control (MAC) overheads while estimating the current queue size which in turn is required for dynamic TXOP limits allocation. Hence, not considering MAC overhead appropriately results in inaccurate queue size estimation, thereby leading to inappropriate allocation of dynamic TXOP limits. In this article, an enhanced dynamic TXOP (EDTXOP) scheme is proposed that takes into account all the MAC overheads while estimating current queue size, thereby allocating appropriate dynamic TXOP limits within the pre-setting threshold values. In addition, the article presents an analytical estimation of the EDTXOP scheme to compute the dynamic TXOP limits for the current high priority traffic queues. Simulation results were carried out by varying traffic load in terms of packet size and packet arrival rate. The results show that the proposed EDTXOP scheme achieves the overall performance gains in the range of 4.41%-8.16%, 8.72%-11.15%, 14.43%-32% and 26.21%-50.85% for throughput, PDR, average ETE delay and average jitter, respectively when compared to the existing work. Hence, offering a better TXOP limit allocation solution than the rest.
Editor: San Francisco: Public Library of Science
Idioma: Inglês

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An enhanced dynamic transmission opportunity scheme to support varying traffic load over wireless campus networks

May, Zazilah ; Alam, M. K ; Husain, Khaleel ; Hasan, Mohammad Kamrul Debiao, He

San Francisco: Public Library of Science

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