Towards a Broadband Communications Manager to regulate train-to-earth communications

Gutierrez, Unai; Salaberria, Itziar; Perallos, Asier; Carballedo, Roberto

doi:10.1109/melcon.2010.5476304

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…On the other hand, based on our previous experience working with transportation systems [5] [19] [20], our communications middleware have been tested by simulating the traffic which is usually generated by applications and services deployed in transportation systems that require vehicle-to-ground communications. Thus, the TABLE I show the selected applications types to perform the tests.…”

Section: Tests Set-upmentioning

confidence: 99%

“…These applications usually share the transmission channel, competing for bandwidth usage [4]. The problem arises when network bandwidth availability is less than the bandwidth requested by applications, causing issues like transmission bottlenecks and bandwidth monopolizations [5]. Furthermore, depending on the To tackle these challenges, it is necessary a smart intermediate element (middleware) which manages the communication between applications (both in terrestrial and vehicular-side) and makes the most favourable available network link selection for such communication.…”

Section: Introductionmentioning

confidence: 99%

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A middleware for dynamic and adaptive vehicle-to-ground communications management

Salaberria

Perallos

Urquiola

et al. 2013

16th International IEEE Conference on Intelligent Transportation Systems (ITSC 2013)

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The widespread use of wireless and Internet technologies in transport systems, enables the provision of new intelligent services based on broadband communications between vehicles and traffic control centres (hereinafter vehicleto-ground communications). There are many broadband management systems but most of them have been designed for non-mobile environments. This result in a poor performance when are used in scenarios where senders or receivers are moving. Such problems appear because environments where transportation systems are deployed present specific issues related to coverage, bandwidth and also a mix of communications networks. In order to tackle these challenges this paper describes and tests a vehicle-to-ground communication middleware that aims to manage communication requests using a dynamic and adaptive approach. role of these applications, the transmission of information from one of them may be higher priority than others depending on the criticality of the information transmitted [6].

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Section: Tests Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A middleware for dynamic and adaptive vehicle-to-ground communications management

Salaberria

Perallos

Urquiola

et al. 2013

16th International IEEE Conference on Intelligent Transportation Systems (ITSC 2013)

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“…This solution is based on the management of a wireless communications channel at the application layer. The architecture proposed is currently being deployed in some railway companies from Spain (Euskotren and ETS from Basque Country, and Renfe from Spain), will be presented (Gutiérrez et al, 2010). It is an innovative general purpose wireless communication channel which allows the train to communicate with the railway control centres in such a way that the applications or services are unaware of communication issues such as: establishment and closure of the communication, management of the state of connectivity, prioritization of information and so on.…”

Section: Managing Train-to-earth Wireless Communicationsmentioning

confidence: 99%

Wireless Technologies in the Railway: Train-to-Earth Wireless Communications

Salaberria¹,

Carballedo²,

Perallos³

2012

Wireless Communications and Networks - Recent Advances

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Since the origins of the railway in the XIX century most of the innovation and deployment efforts have been focused on aspects related to traffic management, driving support and monitoring of the train state (Shafiullah et al., 2007). The aim has been to ensure the safety of people and trains and to meet schedules, in other words, to ensure the railway service under secure conditions. To achieve this it has been necessary to establish a communication channel between the mobile elements (trains, infrastructure repair machinery, towing or emergency vehicle, and so on) and the earth fixed elements (command posts and stations, signals, tracks, etc.) (Berrios, 2007). Nowadays, safety is a priority too, but new requirements have arisen, mainly concerning the quality improvement of the transport service provided to the passengers (Aguado et al., 2005). Moreover, the current European railway regulation by establishing that railway services be managed by railway operators independent of railway infrastructure managers makes it necessary for infrastructure fixed elements to share information with mobile elements or trains (handled by railway operators). This new policy results in additional requirements on the exchange of information between different companies. How to fulfil these requirements is a new technological challenge in terms of railway communications (Shafiullah et al., 2007) that is explored in this chapter. The use of wireless technologies and Internet is growing in the railway industry which allows the deployment of new services that need to exchange information between the trains and terrestrial control centres (Shafiullah et al., 2007). In this sense, there are suitable solutions for other environments which allow to manage the bandwidth in terms of data rates. Therefore, these solutions are not designed for railway needs, and do not cover all the requirements that the railway industry has (California Software Labs, 2008; Marrero et al., 2008). This chapter describes a specific wireless communications architecture developed taking into account railway communications needs and the restrictions that have to be considered in terms of broadband network features. It is based on standard communication technologies and protocols to establish a bidirectional communication channel between trains and railway control centres.

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“…In these situations the position of trains is done manually by live-voice communication between drivers and control centers. For this reason, in recent years, there have been many initiatives to develop backup positioning systems, in which the train becomes the protagonist (Jiang et. al., 2010) (Bai-Gen et.…”

Section: Introductionmentioning

confidence: 99%

“…As the train is a moving node, fast handover techniques are needed to maintain the node connected to the network. This process produces a delay in the communication that can break down the link and cause the failure of the data transmission (Palit, Bickerstaff, and Langmaid, 2009). Moreover, railway networks may also suffer from the following problems caused by the handover applied techniques:…”

Section: Introductionmentioning

confidence: 99%

Improving the Reliability of a Train Positioning System through the Use of Full Coverage Radio Communication Technologies - Performance Study of a TETRA Network to Transmit Position Information

Carballedo

Fernández

Hernández-Jayo

et al. 2012

Proceedings of the International Conference on Signal Processing and Multimedia Applications and Wireless Information Networks

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Today, it is common for trains to incorporate autonomous positioning systems based on geo-location technologies similar to those used on road transportation. These positioning systems represent a cost effective solution for railway companies operating in not evolved regions. Furthermore, these positioning systems can enhance the reliability of positioning systems based on the occupation of the tracks (which are most used in the most developed regions). Autonomous positioning systems calculate the position of the train, but the position has to be sent from the train to the control center. GPRS/3G mobile technologies and WiFi radio technologies are the most common technologies for transmitting the position to the control centers. These technologies do not guarantee 100% coverage in certain areas such as tunnels or mountainous regions. This paper presents the results of the tests on an autonomous positioning system to add a new communications technology in order to increase its coverage. This technology is TETRA, which is a radio technology that has been traditionally used for voice transmission, but it can be a good complement to GPRS/3G when there is no coverage.

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Towards a Broadband Communications Manager to regulate train-to-earth communications

Cited by 9 publications

References 6 publications

A middleware for dynamic and adaptive vehicle-to-ground communications management

A middleware for dynamic and adaptive vehicle-to-ground communications management

Wireless Technologies in the Railway: Train-to-Earth Wireless Communications

Improving the Reliability of a Train Positioning System through the Use of Full Coverage Radio Communication Technologies - Performance Study of a TETRA Network to Transmit Position Information

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