UGM membangun titik akses Wi-Fi (Wi-Fi Hotspot) pertama pada 10 lokasi melalui program SP4 oleh PPTIK. Setelah pemasangan di kesepuluh lokasi tersebut, banyak unit-unit di UGM yang memasang Wi-Fi dan mengatur alokasi bandwidth dari jaringan masing-masing. Penelitian ini bertujuan untuk (1) Mengetahui sejauh mana UGM mengatur instalasi wireless hotspot dengan memetakan jangkauan dan pemakaian channel sinyal access point hotspot di UGM dan (2) Mengidentifikasi apakah terdapat daerah wi-fi ‘blank spot’. Pemetaan access point dilakukan dengan dua cara. Pertama dengan wardriving, untuk mengetahui gambaran umum jaringan wireless di UGM. Perkiraan lokasi access point yang diperoleh dari wardriving, diverifikasi dengan cara kedua. Yaitu wawancara dengan admin jaringan Fakultas/Jurusan. Pendataan access point dilakukan di 18 Fakultas, Gedung KPTU Pusat dan Perpustakaan Unit 1. Penelitian lebih lanjut mengenai pengaruh jangkauan dan pemakaian channel dilakukan dengan site survey di gedung Teknik Elektro UGM. Hasil penelitian menujukkan: (1) Jumlah access point di 18 Fakultas, Gedung KPTU Pusat dan Perpustakaan Unit 1 mencapai 196 jaringan, (2) Di beberapa daerah tertentu di daerah penelitian masih di temukan daerah blank spot yaitu daerah yang tidak terjangkau jaringan wireless. (3) Sebagian besar pemasangan access point yang jangkauan saling bersinggungan belum menggunakan nonoverlap channel (1,6,11). Hal ini dapat mengakibatkan interferensi pada sinyal access point dan performa koneksi internet tidak reliable. (4) Hak akses internet via wireless di beberapa daerah penelitian masih bersifat tertutup, yaitu mewajibkan user mendaftarkan MAC address, memiliki account dan/atau mengetahui password enkripsi jaringan. Sedangkan hasil site survey di Gedung Teknik Elektro UGM menunjukkan: (1) Pengaruh jangkauan dan pemakaian channel yang sama pada access point yang lokasinya berdekatan. Performa jaringan membaik pada offpeak time, dan memburuk pada peak time. (2) Sedangkan kehandalan jaringan dan jangkauan yang baik dari sebuah access point di pengaruhi dari penggunaan hardware yaitu Linksys WAP54G

Gadjah Mada University (UGM) has established its first Wi-Fi access points (Wi-Fi hotspots) on 10 locations through SP4 program which is followed by other units in UGM within installing and managing the bandwidth allocation on each networks. The objective of the research tries to (1) study how UGM manage the installation of wireless hotspots by mapping the coverage and the usage of hotspot access points’ signal channel in UGM and (2) to identify the Wi-Fi blank spot area. The access point mapping was conducted in two methods. First, by war driving that learns the structure of wireless networks in UGM by estimating the total number of access points located in 18 faculties, KPTU UGM, and Unit 1 Library building of UGM. These positions then verified by doing interview within each Faculty’s network administrator. The further research regrading of the influence of the network coverage and channel usage was done by studying site survey in Electrical Engineering building. The result shows that: (1)The total number of access points has been identified up to 196 points, (2) There still exists blank spots areas with no wireless network (3) Most of the overlapped access points that do not use the non-overlapping channel (i.e. 1,6,11) can cause signal interference and unreliable internet connection performance, (4) In several areas of the research, the Internet access rights via wireless are restricted, where users must register the MAC addresses, own account and/or know the network encryption password. Meanwhile, the site survey result shows that the network coverage and channel usage on adjacent access point location could be interefered by each other. The network performance improves at the off-peak time and deteriorates at the peak time. (2) The network reliability and excellent coverage of an access point are influenced by hardware choice (Linksys WAP54G).

Kata Kunci : Access Point,Pemetaan Jangkauan Channel Sinyal,Wifi, Access Point, Mapping, Coverage, Channel, Site Survey