naa a22 4500 510798217 CHVBK 20180411083344.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1183-z doi (NATIONALLICENCE)springer-10.1007/s11277-013-1183-z A Simple Time Shift Scheme for Beacon Broadcasting Based on Cluster-Tree IEEE 802.15.4 Low-Rate WPANs [Elektronische Daten] [Chi-Ming Wong, Chih-Fong Chang, Bih-Hwang Lee] Wireless sensor networks based on the IEEE 802.15.4 standard is able to carry out short-distance transmissions in low-rate and low-power wireless personal area networks. To access the channel, it uses the slotted carrier sense multiple access with collision avoidance (CSMA/CA) in the contention access period (CAP) under superframe structure with beacon frame broadcast to bound the duration of superframe. However, the beacon frame is transmitted periodically without CSMA/CA so that it could be collided continuously. This type of collision causes node lost synchronization and unable to join a network because the beacon frame cannot be normally received. This paper proposes a simple time shift scheme based on IEEE 802.15.4 to keep original superframe structure and distribute transmission of beacon frame over active period to avoid beacon frame collisions. We use a simple function to allocate beacon frame transmission in the active period. The simulation results show that the proposed scheme significantly reduces the beacon collision and lost synchronization rate, and it also improves the throughput. Springer Science+Business Media New York, 2013 Simple time shift scheme (STSS) nationallicence Wireless sensor network (WSN) nationallicence Wireless personal area network (WPAN) nationallicence IEEE 802.15.4 nationallicence Medium access control (MAC) protocol nationallicence Wong Chi-Ming Department of Electronic Engineering, Jinwen University of Science and Technology, New Taipei City, Taiwan aut Chang Chih-Fong Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan aut Lee Bih-Hwang Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2837-2848 0929-6212 72:4<2837 2013 72 11277 https://doi.org/10.1007/s11277-013-1183-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1183-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wong Chi-Ming Department of Electronic Engineering, Jinwen University of Science and Technology, New Taipei City, Taiwan aut NATIONALLICENCE 700 1- Chang Chih-Fong Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan aut NATIONALLICENCE 700 1- Lee Bih-Hwang Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2837-2848 0929-6212 72:4<2837 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer