Performance evaluation of VoIP calls over MANET for different voice codecs

Haibeh, Lina Abou; Hakem, Nadir; Safia, Ousama Abu

doi:10.1109/ccwc.2017.7868479

Cited by 14 publications

(14 citation statements)

References 5 publications

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“…In the last few years, much has been done to deal with issues relating to performance or dependability of real time applications, such as VoIP services [14,15,16,17,18,19,20,21,22]. Initially, Reference [14] provides an insight into the impact of TCP segmentation in VoIP monitoring and the solution that has been applied to face it.…”

Section: Related Workmentioning

confidence: 99%

Performability Evaluation of Voice Services in Converged Networks

Guimarães

Rodrigues

Nogueira

2020

RITA

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In the last years, the transmission of voice services in converged networks has experienced a huge growth. However, there are still some questions considering the ability of these networks to deliver voice services with acceptable quality. In this paper, we applied analytical modeling and simulation to analyze the quality of voice services using a new index, called MOS a , which considers jointly the MOS index and the availability of the subjacent infrastructure. We consider the influence of different CODECs (G.711 and G.729), queuing policies (Priority Queuing and Custom Queuing), and the warm standby redundancy mechanism. Our goal is to analyze the quality of these services by taking into account overloading conditions in different architectures/scenarios. These scenarios were constructed using the modeling mechanisms Reliability Block Diagram and Stochastic Petri Nets in addition to a discrete event simulator. Experimental results indicate that the G.711 CODEC has a higher sensitivity both in terms of data traffic volume and allocated network resources in relation to the G.729 CODEC.

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Section: Related Workmentioning

confidence: 99%

Performability Evaluation of Voice Services in Converged Networks

Guimarães

Rodrigues

Nogueira

2020

RITA

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“…Some of the common VoIP codecs are G.711, G.729, G.722, G.723, and G.726. VoIP codecs performance has been studied in, e.g., [11], which uses G.711, G.729, and G.723 in an indoor environment; the results show that G.711 outperforms the other two due to A-law/µ-law algorithmic properties related to compression and high bandwidth usage features.…”

Section: Solution Name Advantages Limitationsmentioning

confidence: 99%

Evaluation of VoIP QoS Performance in Wireless Mesh Networks

et al. 2017

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Abstract:The main focus of this research article is the evaluation of selected voice over Internet protocol (VoIP) solutions in wireless mesh network (WMN) scenarios. While WMNs have self-healing, self-forming, and dynamic topology features, they still pose challenges for the implementation of multimedia applications such as voice in various scenarios. Therefore, various solutions to make WMN more suitable for VoIP application have been proposed in the scientific literature. In this work, we have extensively explored a set of applicable scenarios by conducting experiments by means of a network simulator. The following scenarios were selected as the most representatives for performance evaluation: first responders, flooded village, remote village, and platoon deployment. Each selected scenario has been studied under six sub-scenarios corresponding to various combinations of the IEEE 802.11g, 802.11n, 802.11s, and 802.11e standards; the G.711 and G.729 codecs; and the ad hoc on demand distance vector (AODV) and hybrid wireless mesh protocol (HWMP) routing protocols. The results in terms of quality of service (measured with the mean opinion score rating scale), supported by the analysis of delay, jitter and packet loss, show that 802.11g integration with both VoIP codecs and AODV routing protocol results in better VoIP performance as compared to most other scenarios. In case of 802.11g integration with 802.11s, VoIP performance decreases as compared to the other sub-scenarios without 802.11s. The results also show that 802.11n integration with 802.11e decreases VoIP performance in larger deployments. We conclude the paper with some recommendations in terms of combinations of those standards and protocols with a view to achieve a higher quality of service for the given scenarios.

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“…Technology allows mobile devices to exchange voice messages and calls over an internet connection, it depends on different types of codec used, which converts and compress analog to a digital signal to be transmitted, and each coding gives different frame rate (bps) that affect the voice quality in MANET [Abou Haibeh, L, Hakem, N & Safia, 2017].…”

Section: Introductionmentioning

confidence: 99%

Improving VoIP Transmission for IEEE 802.11n 5GHz MANET

2021

ZJPAS

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Performance evaluation of VoIP calls over MANET for different voice codecs

Cited by 14 publications

References 5 publications

Performability Evaluation of Voice Services in Converged Networks

Performability Evaluation of Voice Services in Converged Networks

Evaluation of VoIP QoS Performance in Wireless Mesh Networks

Improving VoIP Transmission for IEEE 802.11n 5GHz MANET

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