2.4Ghz ISM(Industrial Scientific Medical) 밴드에서 간섭을 회피하기 위한 무선 센서 노드의 채널 선택 방법Channel Selection Method of Wireless Sensor Network Nodes for avoiding Interference in 2.4Ghz ISM(Industrial, Scientific, Medical) Band
- Other Titles
- Channel Selection Method of Wireless Sensor Network Nodes for avoiding Interference in 2.4Ghz ISM(Industrial, Scientific, Medical) Band
- Authors
- 김수민; 금동현; 김경훈; 오일; 최승원
- Issue Date
- Dec-2014
- Publisher
- (사)디지털산업정보학회
- Keywords
- IEEE 802.15.4; Wi-Fi; Interference; Channel Selection; RSSI
- Citation
- (사)디지털산업정보학회 논문지, v.10, no.4, pp.109 - 116
- Indexed
- KCI
OTHER
- Journal Title
- (사)디지털산업정보학회 논문지
- Volume
- 10
- Number
- 4
- Start Page
- 109
- End Page
- 116
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/158405
- ISSN
- 1738-6667
- 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.
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