0000000000146484
AUTHOR
Admar Ajith Kumar Somappa
Model-based verification of the DMAMAC protocol for real-time process control
Medium Access Control (MAC) protocols are responsible for managing radio communication that constitute the main energy consumer in wireless sensor-actuator networks. The Dual-Mode Adaptive MAC (DMAMAC) protocol is a recently proposed MAC protocol for process control applications within industrial automation. The goal of the DMAMAC protocol is to improve energy efficiency along with addressing real-time requirements for process control applications. The DMAMAC protocol switches between two operational modes that correspond to the two main states in process control: the transient state and the steady state. The state-switch is a safety critical function of the DMAMAC protocol (along with othe…
Implementation and Deployment Evaluation of the DMAMAC Protocol for Wireless Sensor Actuator Networks
Abstract The increased application of wireless technologies including Wireless Sensor Actuator Networks (WSAN) in industry has given rise to a plethora of protocol designs. These designs target metrics ranging from energy efficiency to real-time constraints. Protocol design typically starts with a requirements specification, and continues with analytic and model-based simulation analysis. State-of- the-art network simulators provide extensive physical environment emulation, but still have limitations due to model abstractions. Deployment testing on actual hardware is therefore vital in order to validate implementability and usability in the real environment. The contribution of this article…
Model-based specification and validation of the dual-mode adaptive MAC protocol
Wireless sensor and actuator networks (WSANs) rely on MAC protocols to coordinate access to the wireless medium access and for managing the radio unit on each device. The dual-mode adaptive MAC (DMAMAC) protocol is a recently proposed protocol designed to reduce the energy consumption of the radio communication in WSANs. The DMAMAC protocol targets the industrial WSANs used for real-time process control. At its core, DMAMAC exploits the distinction between transient and steady of the controlled plant process to dynamically adapt the MAC superframe structure and thereby conserve energy. The switch between steady and transient mode of operation is a safety-critical part of the protocol. The c…
A Dual-Mode Adaptive MAC Protocol for Process Control in Industrial Wireless Sensor Networks
Doktorgradsavhandling ved Fakultet for teknologi og realfag, Universitetet i Agder, 2017 Wireless Sensor Networks (WSNs) consist of sensors and actuators operating together to provide monitoring and control services. These services are used in versatile applications ranging from environmental monitoring t oindustrial automation applications. Industrial Wireless Sensor Network (IWSN) is a sub domain of the WSN domain, focussing the industrial monitoring and automation applications. The IWSN domain differs from the generic WSN domains in terms of its requirements. General IWSN requirements include: energy efficiency and quality of service, and strict requirements are imposed on the quality of …
Simulation-based Evaluation of DMAMAC - A Dual-Mode Adaptive MAC Protocol for Process Control
Control systems automation is widely used in many industrial domains and have strong requirements on delay, throughput, robustness, and reliability. In the domain of networked control systems, the medium of communication is increasingly involving wireless communication along-side conventional wired communication. Issues ranging from energy efficiency and reliability to low-bandwidth have to be addressed to enable the transition to increased use of wireless communication. In earlier work, we have proposed the Dual-Mode Adaptive MAC (DMAMAC) protocol relying on a combination of Time Division Multiple Access (TDMA) and Carrier Sense Multiple Access (CSMA). The DMAMAC protocol is able to dynami…
Model-based development for MAC protocols in industrial wireless sensor networks
Model-Driven Software Engineering (MDSE) is an approach for design and implementation of software applications, that can be applied across multiple domains. The advantages include rapid prototyping and implementation, along with reduction in errors induced by humans in the process, via automation. Wireless Sensor Actuator Networks (WSANs) rely on resource-constrained hardware and have platform-specific implementations. Medium Access Control (MAC) protocols in particular are mainly responsible for radio communication, the biggest consumer of energy, and are also responsible for Quality of Service (QoS). The design and development of protocols for WSAN could benefit from the use of MDSE. In t…
Towards a Dual-mode Adaptive MAC Protocol (DMA-MAC) for Feedback-based Networked Control Systems
Abstract Automated control systems play an important part in many industrial domains and the medium used for communication between devices in these systems is in transition from wired to wireless for cost reasons. Control systems have strict requirements on delay, throughput, and reliability, that vary with time during operation. Addressing these requirements requires predictable and robust protocols to be employed, and they must be adaptive to the varying states of the controlled process. In this article, we propose a dual-mode adaptive medium access control protocol that caters for two main operation modes in control systems: the steady mode operation, and the transient mode operation. We…