Optimising no acknowledgment policy on WLANs supporting voice over internet protocol

Politis, Anastasios; Hilas, Constantinos S.; Papatsoris, A.D.

doi:10.1049/el.2013.3261

Cited by 4 publications

(2 citation statements)

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“…Furthermore, it is assumed that data bursts are always available at the transmitting stations. This is not always the case as shown in [9], especially for VoIP applications.…”

Section: Related Workmentioning

confidence: 93%

“…In our previous work [9], the RTS/CTS was considered as a protection mechanism for the acknowledgment suppression protocol in WLANs supporting voice traffic. In this work it was reported that an efficiency threshold exists under which the NoACK policy is outperformed by the standard DATA/ACK mechanism and a modification to the NoACK protocol was proposed.…”

Section: Related Workmentioning

confidence: 99%

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CTS-to-self as a protection mechanism for the no acknowledgment protocol in VoIP WLANs

Politis¹,

Hilas²

2018

ces

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In modern WLANs, the No Acknowledgment (NoACK) policy implements an acknowledgment-free protocol that is able to boost Medium Access Control (MAC) layer performance. However, due to the lack of a MAC-level recovery, a protection mechanism must be used in conjunction with the NoACK protocol in order to minimize the probability of packet loss. There are mainly two protection mechanisms defined by the IEEE 802.11 standard, namely RTS/CTS and CTS-to-self. While the first is well studied when used to protect the frame exchange with NoACK, the latter has not received any attention as a NoACK protection mechanism. In this paper we provide an analytical study to determine the system efficiency in terms of achieved throughput when these mechanisms are used to protect the acknowledgment suppression protocol in WLANs supporting voice applications. Based on the findings presented, a scheme based on the CTS-to-self mechanism is proposed to aid the application of the NoACK policy in WLANs. The proposed scheme is evaluated and its effectiveness is proven by means of simulation.

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“…Furthermore, it is assumed that data bursts are always available at the transmitting stations. This is not always the case as shown in [9], especially for VoIP applications.…”

Section: Related Workmentioning

confidence: 93%

Section: Related Workmentioning

confidence: 99%