DocumentCode :
2263365
Title :
TDMA based IEEE 802.15.4 for simple/secured low latency deterministic networked control systems
Author :
Anwar, Mashood ; Xia, Yuanqing
Author_Institution :
School of Automation, Key Laboratory of Intelligent Control and Decision of Complex Systems, Beijing Institute of Technology, Beijing 100081, China
fYear :
2015
fDate :
28-30 July 2015
Firstpage :
6624
Lastpage :
6629
Abstract :
In this paper, we propose a time division multiple access (TDMA) based protocol that works on slightly modified IEEE 802.15.4 network in star topology for secured and unsecured low latency deterministic networks (LLDN) for industrial control systems. This protocol ensures total superframe time as low as ten milliseconds as compared to minimum possible superframe time of 15.36 milliseconds. In these networks, Each end device transmits its data frame in their allotted timeslot. The timeslot and inter timeslot spacing is optimized for channel bandwidth utilization and reliable data frame exchange. While this TDMA based protocol eliminates the risk of frame collisions to great extent, MAC sub-layer tweaking improves the non-determinism of the network and increases its bandwidth efficiency. We also investigate the security impact on the performance of LLDN. A mathematical model is developed that takes empirical values as input and predicts the worst case arrival times of network devices at coordinator. Experiments were conducted to evaluate the suggested protocol and mathematical model.
Keywords :
Delay effects; IEEE 802.15 Standard; Protocols; Security; Time division multiple access; IEEE 802.15.4; Low latency deterministic networks (LLDN); Medium access control (MAC); Networked control system; TDMA; security;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference (CCC), 2015 34th Chinese
Conference_Location :
Hangzhou, China
Type :
conf
DOI :
10.1109/ChiCC.2015.7260683
Filename :
7260683
Link To Document :
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