Measurement-Based Handover Method for Communication-Based Train Control Systems

Chan, Mei Ya; Baroudi, Sami; Siu, Joseph; Liebeherr, Jörg

doi:10.1109/vtcfall.2017.8288300

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…In the same way, there are other handover algorithms that focus on the position of the node to reduce (but not avoid) the time interval in which communication is interrupted due to a handover [34], [35]. Finally, a mechanism to avoid this interruption is proposed in [36], but it is at the expense of exploiting a predictable geometry, such as the motion paths of trains. Note that all these solutions besides being evaluated under a network with a reduced number of nodes, they have been assessed through non-deterministic communication protocols that are not suitable for FA applications.…”

Section: ) Ieee 80211 Standard-based Handover Algorithmsmentioning

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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Section: ) Ieee 80211 Standard-based Handover Algorithmsmentioning

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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show abstract

“…A handoff algorithm determines when and to which AP a handoff is performed. In this section, a set of commonly used handoff algorithms are considered [3,17,19]. They can be broadly classified into two groups, one based on the RSS provided by the APs and others based primarily on the train location.…”

Section: Handoff Algorithmsmentioning

confidence: 99%

“…For deployed systems, performance improvements can be achieved by devising handoff algorithms that minimise the number of handoffs and service interruptions. In [17], a reduction in the number of handoffs is achieved by applying a proposed measurement-based handoff model that exploits the predictable motion path of trains. In [18], the system performance is enhanced by reducing the handoff overhead of the underlying IEEE 802.11, using a location-based approach.…”

Section: Introductionmentioning

confidence: 99%

Investigating the effect of handoff algorithms on the performance of CBTC systems using physics‐based propagation models

Sood

Baroudi

Zhang

et al. 2019

IET Microwaves, Antennas & Propagation

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The performance of communication‐based train control (CBTC) systems, in terms of frequency of handoffs [changing association from one access point (AP) to another] and duration of service interruptions, strongly depends on the employed handoff algorithm. In this study, the received signal strength used for the calculation of these metrics is generated by a custom vector parabolic equation (VPE) solver explicitly developed to achieve high accuracy in complex tunnel environments. The authors demonstrate that VPE is as effective and accurate as measurements in estimating the performance of CBTC systems. Additionally, they present a methodology for selecting a handoff algorithm that most enhances the performance of a CBTC system, where APs have already been deployed. The impact of handoff algorithms on system performance is investigated by considering multiple system configurations in a 5 km, curved, rectangular tunnel. A multiple‐attribute decision making approach is presented to rank handoff algorithms based on their performance. To validate this proposed simulation‐based framework, a CBTC system deployed in the London Underground is presented, where measurement‐based ranking is compared against the one derived using VPE simulations.

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A New Way to Integrate Physics-Based Channel Models in Communication System Design

Sood

Zhang

Baroudi

et al. 2018

2018 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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Measurement-Based Handover Method for Communication-Based Train Control Systems

Cited by 7 publications

References 8 publications

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

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

Investigating the effect of handoff algorithms on the performance of CBTC systems using physics‐based propagation models

A New Way to Integrate Physics-Based Channel Models in Communication System Design

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