Performance evaluation of wireless networked control system via IEEE 802.15.4 with time-triggered CSMA/CA algorithm |
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Authors: | Jee-Hun Park Kyoung-Nam Ha Suk Lee and Kyung-Chang Lee |
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Affiliation: | (1) Seoul National University, Seoul, South Korea;(2) Sejong University, Seoul, South Korea |
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Abstract: | This paper focuses on performance evaluation of wireless networked control system (NCS) via IEEE 802.15.4 with time-triggered
contention-based carrier sensing multiple access with collision (CSMA/CA) algorithm to satisfy the industrial quality-of-service
(QoS). Although the IEEE 802.15.4 is considered to a promising protocol for wireless NCS, its performance is not stable and
its delay is not bounded under heavy traffic because its medium access control (MAC) is based on the contention-based CSMA/CA
scheme. As an alternative approach to avoid these limitations, this paper presents a time-triggered CSMA/CA algorithm for
IEEE 802.15.4 non-beacon mode that relies on a time division multiplexing access (TDMA) method. The time-triggered CSMA/CA
algorithm for IEEE 802.15.4 non-beacon mode was implemented an experimental wireless NCS, and its control performance was
compared with conventional CSMA/CA algorithm. Based on the experimental results, the time-triggered CSMA/CA algorithm is a
feasible alternative for wireless NCS. |
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