A New Method to Boost VoIP Performance Over IPv6 Networks

Abstract

The demands on virtual communication have increased noticeably during the COVID-19 pandemic lockdown. As an essential part of virtual communication, VoIP should be promoted to achieve the desired level of performance. One critical area investigated in VoIP is the bandwidth utilization (BWU) of the VoIP over IPv6 networks. Enhancing BWU will impact call capacity and quality; it increases call capacity and boosts call quality. Unfortunately, a considerable amount of bandwidth is wasted when running VoIP over IPv6 networks. This is due to the large size of the IPv6 header and the small size of the speech frame. This paper proposes a new method to handle the inefficient BWU when running VoIP over IPv6 networks. The proposed method combines multiplexing multiple VoIP packets in one IPv6 header and using the superfluous fields to carry a portion of the speech frame. Therefore, the proposed is called packet multiplexing and carrier fields (PMCF). Investigation of the PCMF method has been done using four metrics to measure the promotion in BWU, namely calls capacity, header size, bandwidth saving, and speech frame shortening metrics. With the four metrics, the PMCF method has outperformed the comparable methods. For instance, the call capacity has been promoted by up to 269% compared to the typical IPv6 method in the tested scenarios. Therefore, the PMCF method is a feasible solution to facilitate the BWU of VoIP when running VoIP over IPv6 networks.

Tel-MPLS: a new method for maximizing the utilization of IP telephony over MPLS networks

“…Examples of these approaches include putting the IP telephony packet into a one header, compressing the packet's header, substituting the protocols in the IP telephony header with new protocols pertaining to IP telephony, and utilizing the extra fields in the packet's header to convey the voice data [14]- [18]. A key benefit of the last approach, which uses the superfluous header fields, is the existence of a number of recommended solutions that are consistent with the existing standards and equipment [18]- [20]. However, none of these methods have been optimized for IP telephony over MPLS networks, as proposed in this study.…”