Introducing jitter buffers in networked control systems with communication disturbance observer under time-varying communication delays

Imai, Ryusuke; Kubo, Ryogo

doi:10.1109/iecon.2015.7392552

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…Roque et al [63] evaluated the performance of an in-vehicle communication system by characterizing the jitter present in the timing of critical CAN messages. Imai et al [41] used a time-delay compensation method to compensate for jitter in a networked control system. The method uses "Jitter Buffers" to suppress jitter due to time-varying network latency.…”

Section: Related Workmentioning

confidence: 99%

Metasploit for Cyber-Physical Security Testing with Real-Time Constraints

Shrestha

Lee

Fischmeister

2022

Science of Cyber Security

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Section: Related Workmentioning

confidence: 99%

Metasploit for Cyber-Physical Security Testing with Real-Time Constraints

Shrestha

Lee

Fischmeister

2022

Science of Cyber Security

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“…Additionally, each forward network path has a transmission delay expressed as T 1 , T 2 , • • • , and T n . The assumption that the delays take constant values is reasonable because a time-varying delay can be transformed into a constant delay by using a jitter buffer on the receiver side [56]. Note that the regulated delay equals the maximum value of the transmission delays on a path if the jitter buffer is installed.…”

Section: A System Configurationmentioning

confidence: 99%

Dynamic Network Path Provisioning and Selection for the Detection and Mitigation of Data Tampering Attacks in Networked Control Systems

et al. 2021

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Networked control systems can help build cost-effective and flexible industrial systems. A system that can function while being immune to cyberattacks is necessary. A method called fixed redundant path selection (FRPS) has been proposed to detect and mitigate data tampering attacks in a networked motion control system. This system contains redundant forward network paths from the controller to the motor sides to detect the attacked path by comparing the values that are received through respective paths.Then, a path selector on the motor side chooses a value on the path that is not attacked based on the majority decision. Increasing the number of redundant paths improves the detection performance of simultaneous attacks against multiple paths. However, it also increases the amount of traffic because the same data are transmitted to all of the redundant paths. This study proposes a dynamic redundant path selection (DRPS) method to balance the detection performance and the amount of traffic. The proposed method initially applies three redundant paths and changes the number of redundant paths to five only when the path selector detects a difference among the received values for the three paths. The experiments confirm that the proposed DRPS outperforms the conventional FRPS. The former can detect and mitigate the data tampering attacks while reducing the number of network paths during tampering detection when the system is exposed to simultaneous attacks against up to two of the redundant paths.INDEX TERMS Cyberattack, cyber-physical system, motion control, networked control system, tampering detection.

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“…In the NCS, there are transmission delays for the forward path T 1 and the feedback path T 2 . In this research, the transmission delays are modeled as a constant value because we assume that the delays can be kept at a constant level by using a jitter buffer to absorb delay variations [36]. The transmission delays are both longer than a control period t c and set to a multiple of t c .…”

Section: A Networked Motion Controlmentioning

confidence: 99%

Simultaneous Time-Delay and Data-Loss Compensation for Networked Control Systems With Energy-Efficient Network Interfaces

et al. 2020

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Networked control systems (NCSs), in which controllers and actuators are connected by communication networks, have been utilized in both industrial and consumer applications. In addition, sleep-based energy-efficient network interfaces have been developed for constructing a green networked society. The combination of the NCSs and energy-efficient network interfaces is a promising approach to reduce the power consumption of NCSs. However, sleeping of the network interface results in loss of data to be transmitted between a controller and an actuator. The sleep-induced data loss causes degradation of control performance. Moreover, NCSs originally include network delay for both forward and feedback paths, which also degrades control performance. This paper proposes a time-delay and dataloss compensation method using a modified communication disturbance observer (MCDOB) for NCSs with sleep-based energy-efficient interfaces. The proposed MCDOB can simultaneously compensate for not only the network delay but also sleep-induced data loss as a disturbance, whereas a conventional communication disturbance observer (CDOB) considers only network delay or network-induced data loss and cannot be directly introduced into the NCSs with sleep-based energy-efficient interfaces. Experimental results show that the proposed method with MCDOB outperforms the conventional method without the MCDOB in terms of integral square error (ISE) and communication rate, which indicates the power consumption of network interfaces. INDEX TERMS Communication disturbance observer, data loss, energy-efficient network, networked control system, time delay.

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Introducing jitter buffers in networked control systems with communication disturbance observer under time-varying communication delays

Cited by 10 publications

References 19 publications

Metasploit for Cyber-Physical Security Testing with Real-Time Constraints

Metasploit for Cyber-Physical Security Testing with Real-Time Constraints

Dynamic Network Path Provisioning and Selection for the Detection and Mitigation of Data Tampering Attacks in Networked Control Systems

Simultaneous Time-Delay and Data-Loss Compensation for Networked Control Systems With Energy-Efficient Network Interfaces

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