Title: Effective packet multiplexing method to improve bandwidth utilisation

Authors: Mosleh M. Abualhaj; Qusai Y. Shambour; AbdelRahman H. Hussein

Addresses: Information Technology Faculty, Al-Ahliyya Amman University, Amman, Jordan ' Information Technology Faculty, Al-Ahliyya Amman University, Amman, Jordan ' Information Technology Faculty, Al-Ahliyya Amman University, Amman, Jordan

Abstract: Voice over IP (VoIP) technology is suffering from squandering the network bandwidth because of the very high packet header overhead. Packet multiplexing methods are used to reduce packet header overhead. In this paper, a new packet multiplexing method, called Voice Frame Pruning and Multiplexing (PM-VFrm), is proposed to improve VoIP bandwidth utilisation. The PM-VFrm achieves this in two aspects. First, multiplexing several packets that share the same route in one header. Unlike the current methods, the PM-VFrm will not add any additional header to the VoIP packets, because it reemploys some of the fields in the RTP header. Second, reducing the VoIP packets' payload size by pruning the voice frame based on a specific algorithm. Again, none of the current methods has proposed pruning the voice frame. The PM-VFrm method outperforms comparable methods. The saved bandwidth has exceeded 55% compared with the traditional method (without multiplexing).

Keywords: VoIP; RTP protocol; VoIP bandwidth utilisation; VoIP packets multiplexing.

DOI: 10.1504/IJCAT.2020.110410

International Journal of Computer Applications in Technology, 2020 Vol.63 No.4, pp.327 - 336

Received: 29 Feb 2020
Accepted: 17 Apr 2020
Published online: 19 Oct 2020 *

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