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http://dx.doi.org/10.6109/jkiice.2012.16.9.1939

Anticipatory Packet Collision Avoidance Algorithm among WiFi and ZigBee Networks for Port Logistics Applications  

Choo, Young-Yeol (동명대학교 컴퓨터공학과)
Jung, Da-Un (동명대학교 동명대학교 컴퓨터공학과)
Abstract
USNs (Ubiquitous Sensor Networks) such as IEEE 802.15.4 ZigBee network share ISM (Industrial, Scientific, and Medical) frequency band with WiFi networks. Once both networks operate in a region, packet collision may happen because of frequency overlapping. To assure this possibility, we conducted experiments where WiFi and ZigBee communication networks had been installed in an area. As a result of the test, successful data transmission rate were reduced due to the frequency overlapping between a WiFi communication channel and a ZigBee communication band. To cope with this problem, we propose a collision avoidance algorithm. In the proposed algorithm, if frequency collision is sensed, new communication channel with different frequency band is allocated to each node. Performance of the proposed frequency collision avoidance algorithm was tested and the results were described.
Keywords
WiFi; USN; Collision avoidance; Ubiquitous port; ZigBee;
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Times Cited By KSCI : 1  (Citation Analysis)
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