Medium access control for wireless networks with diverse time and safety real-time requirements

Peon, Pablo Gutierrez; Uhlemann, Elisabeth; Steiner, Wilfried; Björkman, Mats

doi:10.1109/iecon.2016.7794095

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…[36] proposes a TDMA-based MAC protocol based on the IEEE 802.11e EDCA where all the stations follow the schedule and the station in the corresponding slot sends the packets using the highest priority to avoid contention with other stations and the collision. [37] presents three different MAC layer protocols for the real-time wireless communication based on IEEE 802.11e where the first is a scheduled round-robin method and the other two are contention-based and the time critical packets have the highest priority based on EDCA. [12] presents a deadlineconstrained MAC protocol based on IEEE 802.11e by applying a contention sensitive backoff mechanism.…”

Section: Related Workmentioning

confidence: 99%

RT-WiFi on Software-Defined Radio: Design and Implementation

Yun¹,

Wu²,

Zhou³

et al. 2022

Preprint

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Applying high-speed real-time wireless technologies in industrial applications has the great potential to reduce the deployment and maintenance costs compared to their wired counterparts. Wireless technologies enhance the mobility and reduce the communication jitter and delay for mobile industrial equipment, such as mobile collaborative robots. Unfortunately, most existing wireless solutions employed in industrial fields either cannot support the desired high-speed communications or cannot guarantee deterministic, real-time performance. A more recent wireless technology, RT-WiFi, achieves a good balance between high-speed data rates and deterministic communication performance. It is however developed on commercial-of-the-shelf (COTS) hardware, and takes considerable effort and hardware expertise to maintain and upgrade. To address these problems, this paper introduces the software-defined radio (SDR)-based RT-WiFi solution which we call SRT-WiFi. SRT-WiFi provides full-stack configurability for high-speed real-time wireless communications. We present the overall system architecture of SRT-WiFi and discuss its key functions which achieve better timing performance and solve the queue management and rate adaptation issues compared to COTS hardware-based RT-WiFi. To achieve effective network management with rate adaptation in multi-cluster SRT-WiFi, a novel scheduling problem is formulated and an effective algorithm is proposed to solve the problem. A multi-cluster SRT-WiFi testbed is developed to validate the design, and extensive experiments are performed to evaluate the performance at both device and system levels.

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Section: Related Workmentioning

confidence: 99%

RT-WiFi on Software-Defined Radio: Design and Implementation

Yun¹,

Wu²,

Zhou³

et al. 2022

Preprint

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“…It is used as part of the widely known standards IEEE 802.11 for LAN and IEEE 802.15.4 for wireless personal area networks (WPANs), with the benefit that it is not too complex to implement, and in lightly loaded settings it can achieve good throughput. However, CSMA does not provide a predictable channel access delay since access to the medium is random and packets can collide [9]. Some other techniques are focused on improving the admission control and scheduling algorithms of HCF Coordinated Chanel Access (HCCA) (i.e.…”

Section: Time-triggered Aerial Networkmentioning

confidence: 99%

Quality of Service Study in Synchronized Time-Triggered Aerial Networks

Tariq

Petrunin

Al‐Rubaye

et al. 2020

2020 AIAA/IEEE 39th Digital Avionics Systems Conference (DASC)

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Unmanned aerial vehicles (UAVs) have shown tremendous potential in both military and civilian applications, for example, in delivery services, search and rescue, and surveillance. Currently, UAVs can perform several tasks while in flight. UAVs have real-time systems with limited capability for time-triggered synchronization, which impose synchronization limitations for their platforms. Additionally, there is no timetriggered synchronization between the UAVs and the ground station. One of the requirements for a reliable communication links between a UAV and a ground station is the need for synchronization using Global Navigation Satellite System (GNSS) in a time-triggered network. However, the information exchange between UAV and ground station lacks the time-triggered abilities. In this context, GNSS time can be used as an external source to allow UAV performing tasks connected to the ground station with time-stamped messages. In this paper, we investigate the capability of GNSS as an external time source for the timetriggered network to achieve high quality of service (QoS) of a communication link between the ground station and UAV. Simulations analysis was conducted to evaluate the overall system performance, which gives a better understanding of performance of a time-triggered wired and wireless network.

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“…With the aim of providing to IEEE 802.11 RT guarantees along with a deterministic behavior, several TDMA-based MAC protocols have been proposed in the literature [23]- [26]. Using TDMA, in addition to guaranteeing an upper bound of the delay, packet collisions rarely happen even in high-density networks due to a well-organized scheduler [27].…”

Section: B Communications For Industrial Applicationsmentioning

confidence: 99%

Analysis and Evaluation of a Wired/Wireless Hybrid Architecture for Distributed Control Systems With Mobility Requirements

Fernandez¹,

Seijo²,

Mendicute

et al. 2019

IEEE Access

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Wireless communications offer significant benefits over wired communications, which has increased their popularity in industrial applications. Nevertheless, the existing wireless standard technologies do not satisfy the requirements demanded by the most critical industrial applications and thus, wired communications cannot be directly replaced by wireless solutions. Moreover, the inclusion of movable nodes in the network brings new challenges, such as the handover mechanism. In this paper, a hybrid wired/wireless architecture designed for industrial control applications is proposed. To control the wired network, a timesensitive network (TSN) is used and to control the wireless network a medium access control (MAC) protocol is designed. In order to communicate both networks, a bridge that acts as a deterministic access point (AP) with real-time features is also proposed. One of the fundamental parts of the proposed architecture is that it can be used in applications with mobility requirements. Hence, a soft-handover algorithm is designed which guarantees uninterrupted communication during its execution without the need for a second radio interface and with reduced growth in network overhead. The proposed architecture is evaluated in order to assess its performance. This paper extends our previous work, including both a theoretical analysis to determine the delay bounds of the proposed architecture and a comparison between the performances of the proposed handover algorithm with other algorithms proposed in the literature. The evaluation has been carried out through OMNeT++ simulations. The results demonstrate the superiority of the proposed handover algorithm compared with other state-of-the-art solutions. INDEX TERMSHandover, IEEE 802.11, industrial communications, industrial wireless sensor and actuator networks, real-time communications, SHARP, TSN, wireless communications. ZALOA FERNÁNDEZ received the B.Sc. degree in telecommunications systems engineering and the M.Sc. degree in embedded systems from the University of Mondragon, Spain, in 2014 and 2016, respectively. She is currently pursuing the Ph.D. degree with the Communications Systems Group, IKERLAN Technological Research Centre, Mondragón, Spain, in collaboration with the Signal Theory and Communications Group, University of Mondragon, Spain. Her research interest includes reliable wireless time-critical communications for industrial automation applications. ÓSCAR SEIJO received the B.Sc. and M.Sc. degrees in telecommunications engineering from the University of Oviedo, Spain, in 2015 and 2017, respectively. He is currently pursuing the Ph.D. degree with the Communications Systems Group of IKERLAN Technological Research Centre, Mondragón, Spain, in collaboration with the Signal Theory and Communications (TSC) Group, University of Oviedo, Spain. His research interests include wireless high-performance PHY and MAC design for industrial applications, time synchronization over wireless systems, and digital signal processing. MIKEL MENDICUTE received the B.S...

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Medium access control for wireless networks with diverse time and safety real-time requirements

Cited by 7 publications

References 9 publications

RT-WiFi on Software-Defined Radio: Design and Implementation

RT-WiFi on Software-Defined Radio: Design and Implementation

Quality of Service Study in Synchronized Time-Triggered Aerial Networks

Analysis and Evaluation of a Wired/Wireless Hybrid Architecture for Distributed Control Systems With Mobility Requirements

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