D-VoWiFi - A Guaranteed Bit Rate Scheduling for VoWiFi in non Dedicated Channel

Natarajan, Harikrishnan; Diggi, Suneelkumar; Kanagarathinam, Madhan Raj; Srivastava, Sandesh Kumar; Bharti, Chhaya

doi:10.1109/ccnc.2019.8651789

Cited by 4 publications

(1 citation statement)

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“…Two main issues arise with the aggregation of voice data over 802.11 networks. First, the quality of VoIP calls is debased because of the rise in packet losses, delays, and jitters (variations of delay) [1,10,11]. Second, the large preamble size of the 802.11 frame prompts a squandering of the available BW [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Techniques for VoIP Frame Aggregation Over A-MPDU 802.11n

Kharma¹,

Hussein²,

Taweel³

et al. 2022

Intelligent Automation &Amp; Soft Computing

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The widespread and desirable features of IP and IEEE 802.11 networks have made these technologies a suitable medium for carrying voice over IP (VoIP). However, a bandwidth (BW) exploitation obstacle emerges when 802.11 networks are used to carry VoIP traffic. This BW exploitation obstacle is caused by the large 80-byte preamble size of the VoIP packet and a waiting time of 765 μs for each layer 2 VoIP frame. As a solution, IEEE 802.11n was consequently designed with a built-in layer 2 frame aggregation feature, but the adverse impact on the VoIP performance still needed to be addressed. Subsequent VoIP research has proposed numerous enhancements to the built-in IEEE 802.11n aggregation techniques. In this study, we analyse and propose enhancements to the BW exploitation and VoIP performance over IEEE 802.11n. We also recommend new techniques to enhance VoIP performance via IEEE 802.11n frame aggregation implementations. Furthermore, we contribute guidelines for creating a robust, suitable, and reliable aggregation technique for VoIP over the 802.11n standard.

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