Proceedings ArticleDOI
Performance analysis of an IEEE 802.11ac WLAN with dynamic bandwidth channel access
Sree Vasthav S,Srikanth S,Venkatesh Ramaiyan +2 more
- pp 1-6
TLDR
An analytical model based on a decoupling approximation for saturation throughput analysis of the 802.11ac users and the legacy users is proposed and it is shown that the proposed model accurately captures both high level performance measures such as long term average throughput and low level performance Measures such as collision probability very well.Abstract:
We consider a collocated WLAN with N ac 802.11ac users using dynamic 20/40 MHz channel access and N l 802.11a/n legacy users operating in the secondary 20 MHz channel. Under ideal channel conditions, we seek to characterise the saturation throughput performance of the 802.11ac users and the legacy users. We propose an analytical model based on a decoupling approximation for saturation throughput analysis. Dynamic bandwidth channel access leads to correlation in the channel access of 802.11ac and legacy users and hence, we consider a DTMC to model the transmission opportunities in the primary and the secondary channel. Using simulations, we show that the proposed model accurately captures both high level performance measures such as long term average throughput and low level performance measures such as collision probability very well. Finally, we characterise the effect of N ac , N l and packet size on the network performance.read more
Citations
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Journal ArticleDOI
Dynamic Channel Bonding in Spatially Distributed High-Density WLANs
TL;DR: In this article, the authors discuss the effects on throughput and fairness of dynamic channel bonding (DCB) in spatially distributed high-density wireless local area networks (WLANs), and show that there may be critical interrelations among nodes in the spatial domain, even if they are located outside the carrier sense range of each other.
Journal ArticleDOI
A Renewal Theory Based Analytical Model for Multi-Channel Random Access in IEEE 802.11ac/ax
TL;DR: An analytical model is developed to study the performance of the dynamic channel bonding in IEEE 802.11ac, and non-contiguous channel aggregation in IEEE802.11ax, with coexisting legacy single channel users and shows that multi-channel users can boost their throughput at the cost of degraded throughput of legacy users.
Posted Content
Performance Analysis of Dynamic Channel Bonding in Spatially Distributed High Density WLANs.
TL;DR: It is shown that there are scenarios where DCB with stochastic channel width selection improves the latter approach both in terms of individual throughput and fairness and that smarter bandwidth adaptation is required in the challenging scenarios of next-generation WLANs.
Posted Content
To Bond or not to Bond: An Optimal Channel Allocation Algorithm For Flexible Dynamic Channel Bonding in WLANs
TL;DR: In this paper, the authors proposed an optimal channel allocation algorithm to achieve maximal throughput in DCB WLANs by using a continuous-time Markov Chain (CTMC) model to analyze the equilibrium throughputs.
Proceedings ArticleDOI
Performance analysis of IEEE 802.11ac/ax WLAN technologies under the presence of CFO
TL;DR: In this article, a simulation-based performance analysis of the IEEE 802.11ac/ax technologies on the physical layer (PHY) level is presented, where the transmitter and receiver models of both technologies have been implemented and tested in MATLAB.
References
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Performance analysis of the IEEE 802.11 distributed coordination function
TL;DR: In this paper, a simple but nevertheless extremely accurate, analytical model to compute the 802.11 DCF throughput, in the assumption of finite number of terminals and ideal channel conditions, is presented.
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IEEE 802.11ac: from channelization to multi-user MIMO
TL;DR: An overview of the most important features proposed in the 802.11ac amendment, including channel bonding mechanisms and multi-user MIMO, are presented.
Proceedings ArticleDOI
IEEE 802.11ac: Dynamic Bandwidth Channel Access
TL;DR: The simulation results show that dynamically switching between 20, 40, and 80 MHz bandwidths based on the clear channel assessment (CCA) result of each 20 MHz channel outperforms the static 80 MHz scheme by 85 % in terms throughput when the secondary channels are occupied by the 802.11a stations with moderate traffic loads.
Proceedings ArticleDOI
New insights from a fixed point analysis of single cell IEEE 802.11 WLANs
TL;DR: A fixed point formalisation of the well known analysis of Bianchi is studied, and it is shown how the saturated network analysis can be used to obtain TCP transfer throughputs in some cases.
Journal ArticleDOI
Intelligent Channel Bonding in 802.11n WLANs
TL;DR: This work identifies the network factors that influence the performance of channel bonding in 802.11n networks and finds that channel width selection should consider not only a link's signal quality, but also the strength of neighboring links, their physical rates, and interferer load.
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