Analytical approach towards available bandwidth estimation in wireless ad hoc networks

Mukta,; Gupta, Neeraj

doi:10.1007/s11276-020-02249-8

Cited by 4 publications

(1 citation statement)

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“…In a sense, factor ψ represents the CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) behavior of Wi-Fi networks. Some works [30] have modeled it as a Continuous Time Markov Chain (CTMC), concluding that when a STA or AP wants to transmit a packet with probability P STA (or P AP , respectively), it will succeed with probability P s . For that reason, ψ AP can be computed as ψ AP � P AP • P s , and, equivalently, ψ STA � P STA • P s .…”

Section: Propagation Interferences Sinr and Roughputmentioning

confidence: 99%

On the Benefits of Channel Bonding in Dense, Decentralized Wi-Fi 4 Networks

Giménez-Guzmán

Marsa-Maestre

Orden

et al. 2022

Wireless Communications and Mobile Computing

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Channel bonding is a technique first defined in the IEEE 802.11n standard to increase the throughput in wireless networks by means of using wider channels. In IEEE 802.11n (nowadays also known as Wi-Fi 4), it is possible to use 40 MHz channels instead of the classical 20 MHz channels. Although using channel bonding can increase the throughput, the classic 802.11 setting only allows for two orthogonal channels in the 2.4 GHz frequency band, which is not enough for proper channel assignment in dense settings. For that reason, it is commonly accepted that channel bonding is not suitable for this frequency band. However, to the best of our knowledge, there is not any accurate study that deals with this issue thoroughly. In this work, we study in depth the effect of channel bonding in Wi-Fi 4 dense, decentralized networks operating in the 2.4 GHz frequency band. We confirm the negative effect of using channel bonding in the 2.4 GHz frequency band with 11 channels which are 20 MHz wide (as in North America), but we also show that when there are 13 or more channels at hand (as in many other parts of the world, including Europe and Japan), the use of channel bonding yields consistent throughput improvements. For that reason, we claim that the common assumption of not considering channel bonding in the 2.4 GHz band should be revised.

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Section: Propagation Interferences Sinr and Roughputmentioning

confidence: 99%