Performance analysis of IEEE 802.11 WLANs with saturated and unsaturated sources

Suong H. Nguyen; Hai L. Vu; Lachlan Andrew

doi:10.1109/TVT.2011.2174069

Performance analysis of IEEE 802.11 WLANs with saturated and unsaturated sources

Suong H. Nguyen, Hai L. Vu, Lachlan Andrew

Research output: Contribution to journal › Article › Research › peer-review

36 Citations (Scopus)

Abstract

This paper proposes a comprehensive but tractable model of IEEE 802.11 carrying traffic from a mixture of saturated and unsaturated (Poisson) sources, with potentially different quality-of-service (QoS) parameters, i.e., TXOP limit, CW_min, and CW_max. The model is used to investigate the interaction between these two types of sources, which is particularly useful for systems seeking to achieve load-independent “fair” service differentiation.We show that, when the TXOP limit for unsaturated sources is greater than one packet, batches are distributed as a geometric random variable clipped to TXOP limit. Furthermore,we present asymptotic results for access delay distribution, which indicates that it is infeasible to obtain real-time service in the presence of eight or more saturated sources, regardless of the real-time traffic load, given that all stations use a CW_minof 32.

Original language	English
Article number	6062695
Pages (from-to)	333 - 345
Number of pages	13
Journal	IEEE Transactions on Vehicular Technology
Volume	61
Issue number	1
DOIs	https://doi.org/10.1109/TVT.2011.2174069
Publication status	Published - Jan 2012
Externally published	Yes

Keywords

Heterogeneous traffic
EEE 802.11e enhanced distributed channel access (EDCA)

Access to Document

10.1109/TVT.2011.2174069

Cite this

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abstract = "This paper proposes a comprehensive but tractable model of IEEE 802.11 carrying traffic from a mixture of saturated and unsaturated (Poisson) sources, with potentially different quality-of-service (QoS) parameters, i.e., TXOP limit, CWmin, and CWmax. The model is used to investigate the interaction between these two types of sources, which is particularly useful for systems seeking to achieve load-independent “fair” service differentiation.We show that, when the TXOP limit for unsaturated sources is greater than one packet, batches are distributed as a geometric random variable clipped to TXOP limit. Furthermore,we present asymptotic results for access delay distribution, which indicates that it is infeasible to obtain real-time service in the presence of eight or more saturated sources, regardless of the real-time traffic load, given that all stations use a CWmin of 32.",

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Performance analysis of IEEE 802.11 WLANs with saturated and unsaturated sources

Abstract

Keywords

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Increasing internet energy and cost efficiency by improving higher-layer protocols

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Performance analysis of IEEE 802.11 WLANs with saturated and unsaturated sources

Abstract

Keywords

Access to Document

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Increasing internet energy and cost efficiency by improving higher-layer protocols

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