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http://dx.doi.org/10.5762/KAIS.2012.13.11.5479

Channel Characteristic and Link Quality Assessment of ZigBee Under Wi-Fi Interference  

Ahn, Seong-Beom (Department of Electrical Engineering, Chonbuk National University)
Kim, Hyeon-Ho (Department of Electrical Engineering, Chonbuk National University)
Choi, Sang-Jin (Department of Electrical Engineering, Chonbuk National University)
Rho, Do-Hwan (Department of Electrical Engineering, Chonbuk National University)
Pan, Jae-Kyung (Department of Electrical Engineering, Chonbuk National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.13, no.11, 2012 , pp. 5479-5486 More about this Journal
Abstract
In this paper, we have measured PRR, RSSI and LQI of ZigBee channels under Wi-Fi environment and have assessed channel characteristic and link quality. To confirm any relationship among RSSI, LQI values and PRR under Wi-Fi interference in overlapping and non-overlapping channels of Wi-Fi and ZigBee, the experiments were performed without Wi-Fi, with Wi-Fi and file download through Wi-Fi. Under Wi-Fi interference, We perfomed experiments to ensure channel characteristics and link quality by fixing Wi-Fi and ZigBee receiver and varying the distance between ZigBee receiver and transmitter. ZigBee transmitter sends packet of 256 bits every second to ZigBee receiver. PRR was measured from ZigBee with variance of distance between fixed Wi-Fi and ZigBee. RSSI, LQI, PRR were measured from ZigBee with fixed Wi-Fi, fixed ZigBee receiver and variance of distance of ZigBee transmitter. As a result, we confirmed decrease of PRR under Wi-Fi interference but RSSI, LQI values similar regardless of overlapped or non-overlapped channel and Wi-Fi interference. Therefore, PRR should be used for interference detection in ZigBee communication under Wi-Fi environment but RSSI and LQI are not appreciate.
Keywords
Wi-Fi; ZigBee; Interference; PRR; LQI; RSSI;
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