Authors:
Narumi Kai
;
Shiro Sakata
and
Nobuyoshi Komuro
Affiliation:
Chiba University, Japan
Keyword(s):
Wireless Sensor Networks, Multi-hop, IEEE 802.15.4, Energy Efficiency, Low Latency.
Related
Ontology
Subjects/Areas/Topics:
Scheduling, Tasking and Control
;
Sensor Networks
;
Software and Architectures
;
Wireless Information Networks
;
Wireless Mesh Networks
;
Wireless Network Protocols
Abstract:
IEEE 802.15.4 beacon-enabled mode can use the superframe structure for data transmission. In using the
superframe structure, the duty cycle of the wireless personal area network defined by the values of the beacon
order (BO) and superframe order (SO) can be adjusted in order to achieve high channel utilization and low
power consumption. The optimum values of BO and SO vary according to the network condition. The
present paper proposes a novel method that achieves low power consumption and low latency in a multi-hop
wireless sensor network. In the proposed method, active periods in the superframe structure are appropriately
assigned to routing nodes according to the network topology prior to data transmission, and the values of SO
are adaptively adjusted depending on the traffic load. Simulation results demonstrate the effectiveness of the
proposed method.