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http://dx.doi.org/10.17662/ksdim.2014.10.4.109

Channel Selection Method of Wireless Sensor Network Nodes for avoiding Interference in 2.4Ghz ISM(Industrial, Scientific, Medical) Band  

Kim, Su Min (한양대학교 전자컴퓨터통신공학)
Kuem, Dong Hyun (한양대학교 전자컴퓨터통신공학)
Kim, Kyung Hoon (한양대학교 전자컴퓨터통신공학)
Oh, Il (한양대학교 전자컴퓨터통신공학과)
Choi, Seung Won (한양대학교 전자컴퓨터통신공학과)
Publication Information
Journal of Korea Society of Digital Industry and Information Management / v.10, no.4, 2014 , pp. 109-116 More about this Journal
Abstract
In recent, ISM (Industrial Scientific Medical) band that is 2.4GHz band authorized free of charge is being widely used for smart phone, notebook computer, printer and portable multimedia devices. Accordingly, studies have been continuously conducted on the possibility of coexistence among nodes using ISM band. In particular, the interference of IEEE 802.11b based Wi-Fi device using overlapping channel during communication among IEEE 802.15.4 based wireless sensor nodes suitable for low-power, low-speed communication using ISM band causes serious network performance deterioration of wireless sensor networks. This paper examined a method of identifying channel status to avoid interference among wireless communication devices using IEEE 802.11b (Wi-Fi) and other ISM bands during communication among IEEE 802.15.4 based wireless sensor network nodes in ISM band. To identify channels occupied by Wi-Fi traffic, various studies are being conducted that use the RSSI (Received Signal Strength Indicator) value of interference signal obtained through ED (Energy Detection) feature that is one of IEEE 802.15.4 transmitter characteristics. This paper examines an algorithm that identifies the possibility of using more accurate channel by mixing utilization of interference signal and RSSI mean value of interference signal by wireless sensor network nodes. In addition, it verifies such algorithm by using OPNET Network verification simulator.
Keywords
IEEE 802.15.4; Wi-Fi; Interference; Channel Selection; RSSI;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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