Abstract
This study aimed to increase the range of the wireless IEEE 802.11 b/g by adding the antenna gain, testing the performance of access point with router access point mode of the wireless IEEE 802.11 b/g, and comparing the performance of access point with router access point mode of the wireless IEEE 802.11 b/g.This research was conducted in Makassar. The method used was by performing direct performance measurement of end to end node, namely: delay time, throughput and Packet Loss. Wireless access point was placed on the SPN tower (Sekolah Tinggi Kepolisian Negara/College of Police of State) of Batua. Wireless clients were placed at 2.7 km, 5.36 km, 8.81 km and 10.82 km.The results showed that wireless IEEE 802.11 b/g can be used for data communications up to 10.82 km by adding 24 dB of antenna gain. Wireless with access point mode and router access point mode experienced 100% of packet loss with 60000 bytes of window size packets’ delivery and can handle only 1000 bytes of window size packets. The performance of wireless with access point mode was better than wireless with access point router mode, as follows: For access point packet: 0% of lost wireless, 8 ms of delay time, and 1 Mbps of throughput; On the other hand, for router access point packet: 30% of lost wireless, 26 ms of delay time, and 0.31 Mbps of throughput. Wireless 802.11 B/G can be used as data communication decive for cost-effective data acquisition and has not impact to carbon emission
Highlights
In 2006, there was a similar flood disaster in Sinjai District
Wireless access point is placed at Radio Communication Station of College of Police of State (SPN) of Batua, has a height of 65 m, and wireless client with distance of 2.75 km that is at Faculty of Engineering of UNHAS in 4th floor
From the research on the performance of Wireless IEEE 802.11 b/g that has been conducted here, it can be concluded that: 1. Wireless IEEE 802.11 b/g is designated as an indoor wireless device that can be functioned as an outdoor wireless device with a distance of up to 10.82 km. 2
Summary
In 2006, there was a similar flood disaster in Sinjai District. Flash flood disaster occured in a relatively short time in this incident. The torrential downpours in the mountainous areas quickly drowned Sinjai's urban areas and left hundreds dead with huge material losses. With the current environmental conditions, the actual death of humans can be avoided if there is information that can be given quickly from the top of the mountains to the community live around it. Information about rainfall that is very large and can cause flash floods. Most regions in Indonesia with topographic models like Sinjai Regency, where there is a highland and low land area with low rainwater absorption, do not have early detection system of flood disaster
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