Node Density Performance Analysis on IEEE 802.11ah Standard for VoIP Service

Abstract

The growing of internet and IoT application makes large number of devices will be connected each other to exchange data communication. IEEE made standard of WLAN technology to support the needs. But from the existing standard technologies, there are still deficiencies in delivering the data package for communication. IEEE 802.11ah was made as a new standard of Wi-Fi technology that supports wireless networking scenarios and solving the problem of capacity, coverage and power consumption in IoT era. The wireless access network is very attractive for best-effort data package transmission, but VoIP service on the wireless network is very critical due to its real-time communication characteristic. This research addresses the performance analysis of 802.11 ah standard against VoIP services. To determine the influence of node density in 802.11ah standard, the simulation is done by changing the number of station that access the channel via RAW mechanism. The simulation is performed using network simulator NS3 version 3.23. Based on the result, it can be concluded that the evaluation of IEEE 802.11ah standard in the node density scenario accompanied by the changing of RAW station and RAW group number, the use of MCS 5 with 2 MHz bandwidth resulting better network performance than MCS 7 with 1 MHz bandwidth. Using MCS 5 obtained delay value of 0.241761 s on average, the throughput value of 0,5648 Mbps on average, and the PDR value of 19.84 % on average.

Performance Analysis of User Speed Impact on IEEE 802.11ah Standard affected by Doppler Effect

“…This is because the Random Waypoint mobility itself has pause time parameters that make the station stay still in a few moments before moving again, at that pause time, so the communication between access point and station will become more smoothly so the process of sending information becomes better than when it's on moving condition, while at Gauss-Markov mobility has an alpha as a tuning parameter that makes the movement of Gauss-Markov mobility model's stations more dynamic than the others [17]. Triani Wulandari [18] has done the simulation about the node density performance analysis on IEEE 802.11ah standard for VoIP service. The evaluation of IEEE 802.11ah standard in the node density scenario accompanied by the changing of RAW station and RAW group number, the use of MCS 5 with 2 MHz bandwidth resulting better network performance than MCS 7 with 1 MHz bandwidth.…”

“…The evaluation of IEEE 802.11ah standard in the node density scenario accompanied by the changing of RAW station and RAW group number, the use of MCS 5 with 2 MHz bandwidth resulting better network performance than MCS 7 with 1 MHz bandwidth. They proved that increasing the number of RAW stations will result in better performance on the network, but in overcrowded network conditions will affect the results obtained so that the selection number of RAW Group, RAW slot and MCS Index must also adjust to other parameters according to the conditions network used [18].…”