NDLI: Adaptive Multiplexing Based on E-model for Reducing Network Overhead in Voice over IP Security Ensuring Conversation Quality

Content Provider	IEEE Xplore Digital Library
Author	Pereira, R.M. Tarouco, L.M.R.
Copyright Year	2009
Abstract	Obtaining VoIP security through the IPsec protocol increases packet size, thus substantially increasing the network overhead. One way of mitigating such a problem consists of multiplexing calls so that the transmission of redundant data is reduced. The performance of such technique is directly linked to the number of concurrent calls; however, in more constrained scenarios, the existence of several simultaneous calls is not a premise that may be always assumed. Expanding packets' grouping time is an approach that can improve data compression in scenarios with only a few simultaneous calls; notwithstanding, such an approach reduces the quality of calls, increasing the end-to-end delay. In this work we propose an adaptive multiplexing solution based on the E-model recommendation, which objective consists of increasing the multiplexing capacity yet respecting the expected levels of quality during conversation. Results have shown that the proposed solution makes it possible to attain a higher compression rate when compared to traditional methods in favorable scenarios and better quality in unfavorable ones.
Starting Page	53
Ending Page	58
File Size	1090772
Page Count	6
File Format	PDF
ISBN	9780769536958
DOI	10.1109/ICDT.2009.17
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-20
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Internet telephony Degradation Data security Information security Delay effects Codecs Payloads Virtual private networks Transport protocols Bandwidth QoS VoIPsec Multiplexing E-model
Content Type	Text
Resource Type	Article

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