Comparative analysis of VoIPv4 and VoIPv6 in a bandwidth-limited wireless LAN testbed

摘要

Managing QoS of VoIP is a challenge especially in a heterogeneous network environment such as Internet where often exists limitations or bottlenecks for the bandwidth. As Internet Protocol is evolving to a new version (v6) that offers a bigger address space at the cost of a bigger header size, there has been unawereness and worry how the increased header size effects to a real-time traffic, especially in bandwidth-limited wireless systems. In practice there will always be subnetworks and applications in the Internet that does not support the header compression and QoS methods available. Therefore it is needed to analyze how VoIPv6 works in a bandwidth-limited wireless environment that does not support e.g. header compression, in comparison to VoIPv4. This was studied in a bandwidth-limited Wireless LAN testbed. This paper presents the measurement results with analysis.