Comparative Analysis of Codec G.729 and G.711 on IEEE 802.11AH with MCS and Raw Slot Change Mechanism for VOIP Service

Today, the growth in the number of users is increasing with the development of advanced technology. In addition, this is also accompanied by higher community needs due to technology that is able to support the needs of the community. IEEE 802.11ah is a standardization of the development of IEEE 802.11 that is able to overcome these problems, because the coverage area of the transmission range is up to 1 km, has lower energy consumption, and is capable of serving up to 8191 stations (STA). In this research, an analysis of changes in modulation and coding scheme (MCS) and restricted access window (RAW) Slot will be carried out on the IEEE 802.11ah standard for VoIP services by comparing two codecs, namely G.729 and G.711. In this research, we used network simulators NS-3 on VoIP services by comparing two codecs namely G.729 and G.711 and investigated how they affect network performance. We compare the average delay, throughput, and packet delay ratio (PDR) as network performance parameters.