Analisis kinerja metode akses edca dengan variasi rts threshold untuk layanan real time pada wlan ieee 802.11n
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Institusion
Institut Teknologi Telkom Purwokerto
Author
Inke, Anisa Herdiniamy
Subject
T Technology (General)
Datestamp
2021-04-25 13:20:03
Abstract :
The increasing use of services such as real time audio and video on the WLAN network requires a guarantee of the Quality of Service (QoS). However due to the WLAN using the protocols of Distributed Coordination Function (DCF) where there is no priority traffic in shipping packages the data so that it does not provide warranties for the service, especially in real time. 802.11 MAC Protocol introducing access methods i.e. Enhanced Distributed Channel Access (EDCA). EDCA work by giving priority packet data before it is sent and mengelompokkanya into 4 Access Categories (AC) so it helps mengimkan data packet has been received intact and able to ensure real time service, however when doing tranmisi traffic found collision between packages that cause a decrease in network performance. For it is necessary to apply the mechanism of Request to Send (RTS) and Clear to Send (CTS) which is used to overcome the collison with how to set the RTS threshold value to see the State of the other station will do the process of transmission of packets within at one time. This research used the value of the RTS threshold that is 256 bytes, 128 bytes, 512 bytes and 1024 bytes configured in the services Voice over Internet Protocol (VoIP) and Video conferencing. The results of the simulation showed the best RTS threshold values on a 512 bytes, for improving network performance when sending traffic, marked by declining video services namely delay 2.52427 ms and 0.84842 ms voice, as well as lower packet loss at video service that is 7.871135775% and the value of the voice of 2.962503454% Additionally increase the throughput on the voice service of 3.278845153 Mbps and 2.908660132 Mbps of video. Keywords: WLAN, the EDCA, RTS threshold, a Real time service.
The increasing use of services such as real time audio and video on the WLAN network requires a guarantee of the Quality of Service (QoS). However due to the WLAN using the protocols of Distributed Coordination Function (DCF) where there is no priority traffic in shipping packages the data so that it does not provide warranties for the service, especially in real time. 802.11 MAC Protocol introducing access methods i.e. Enhanced Distributed Channel Access (EDCA). EDCA work by giving priority packet data before it is sent and mengelompokkanya into 4 Access Categories (AC) so it helps mengimkan data packet has been received intact and able to ensure real time service, however when doing tranmisi traffic found collision between packages that cause a decrease in network performance. For it is necessary to apply the mechanism of Request to Send (RTS) and Clear to Send (CTS) which is used to overcome the collison with how to set the RTS threshold value to see the State of the other station will do the process of transmission of packets within at one time. This research used the value of the RTS threshold that is 256 bytes, 128 bytes, 512 bytes and 1024 bytes configured in the services Voice over Internet Protocol (VoIP) and Video conferencing. The results of the simulation showed the best RTS threshold values on a 512 bytes, for improving network performance when sending traffic, marked by declining video services namely delay 2.52427 ms and 0.84842 ms voice, as well as lower packet loss at video service that is 7.871135775% and the value of the voice of 2.962503454% Additionally increase the throughput on the voice service of 3.278845153 Mbps and 2.908660132 Mbps of video. Keywords: WLAN, the EDCA, RTS threshold, a Real time service.
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