Change search
Refine search result
1 - 16 of 16
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Bengtsson, Hoai Hoang
    et al.
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    RISE, Swedish ICT, Viktoria.
    Voronov, Alexey
    RISE, Swedish ICT, Viktoria.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria. Halmstad University, Sweden.
    Interaction Protocol for Highway Platoon Merge2015In: 2015 IEEE 18th International Conference on Intelligent Transportation Systems, 2015, p. 1971-1976, article id 7313411Conference paper (Refereed)
    Abstract [en]

    An interaction protocol for cooperative platoon merge on highways is proposed. The interaction protocol facilitates a challenge scenario for the Grand Cooperative Driving Challenge (GCDC) 2016, where two platoons running on separate lanes merge into one platoon due to a roadwork in one of the lanes. Detailed interaction procedures, described with state machines of each vehicle are presented. A communication message set is designed to support platoon controllers to perform safe and efficient manoeuvres.

  • 2. Chen, Lei
    et al.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria.
    CHOREM: Choreographing services for emergency managemen2016In: ITS World Congress 2016, 2016Conference paper (Refereed)
  • 3.
    Chen, Lei
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Englund, Cristofer
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Choreographing Services for Smart Cities: Smart Traffic Demonstration2017Conference paper (Refereed)
    Abstract [en]

    With the fifth generation (5G) communication technologies on the horizon, the society is rapidly transformed into a fully connected world. The Future Internet (FI) is foreseeable to consist of an infinite number of software components and things that coordinate with each other to enable different applications. Transport systems, as one of the most important systems in future smart cities, will embrace the connectivity, together with the fast development of cooperative and automated vehicles to enable smart traffic. To facilitate this transformation, a service choreography composition platform is under development to enable fast innovation and prototyping of choreography-based Internet of Things (IoT) applications by automatically synthesizing choreographies. Based on the method, a smart traffic application is developed and demonstrated.

  • 4. Chen, Lei
    et al.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria. Halmstad University, Sweden; Chalmers University of Technology, Sweden.
    Cooperative Intersection Management: A Survey2016In: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 17, no 2, p. 570-586, article id 7244203Article in journal (Refereed)
    Abstract [en]

    Intersection management is one of the most challenging problems within the transport system. Traffic light-based methods have been efficient but are not able to deal with the growing mobility and social challenges. On the other hand, the advancements of automation and communications have enabled cooperative intersection management, where road users, infrastructure, and traffic control centers are able to communicate and coordinate the traffic safely and efficiently. Major techniques and solutions for cooperative intersections are surveyed in this paper for both signalized and nonsignalized intersections, whereas focuses are put on the latter. Cooperative methods, including time slots and space reservation, trajectory planning, and virtual traffic lights, are discussed in detail. Vehicle collision warning and avoidance methods are discussed to deal with uncertainties. Concerning vulnerable road users, pedestrian collision avoidance methods are discussed. In addition, an introduction to major projects related to cooperative intersection management is presented. A further discussion of the presented works is given with highlights of future research topics. This paper serves as a comprehensive survey of the field, aiming at stimulating new methods and accelerating the advancement of automated and cooperative intersections.

  • 5. Chen, Lei
    et al.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria.
    Cooperative ITS - EU standards to accelerate cooperative mobility2014In: 2014 International Conference on Connected Vehicles and Expo, ICCVE 2014, 2014, p. 681-686Conference paper (Refereed)
    Abstract [en]

    With intensive research and field operational tests over the intelligent transportation area and the advancements of information and communication technologies, intelligent transportation systems reach the stage of deployment. EU focuses on cooperative intelligent transportation systems and confirms the finalization of the first release of the standards, paving the way for deployment in the coming years. This paper presents the concept of EU's cooperative intelligent transportation systems and describes in detail the functional architecture, together with highlights of related standardsthat have been finalized in Release 1. Latest updates of the cooperative intelligent transportation systems are provided for both industry and academia, aiming at helping to accelerate cooperative mobility.

  • 6.
    Chen, Lei
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Englund, Cristofer
    RISE - Research Institutes of Sweden, ICT, Viktoria. Halmstad University, Sweden.
    Every Second Counts: Integrating Edge Computing and Service Oriented Architecture for Automatic Emergency Management2018In: Journal of Advanced Transportation, ISSN 0197-6729, E-ISSN 2042-3195, Vol. 2018, article id 7592926Article in journal (Refereed)
    Abstract [en]

    Emergency management has long been recognized as a social challenge due to the criticality of the response time. In emergency situations such as severe traffic accidents, minimizing the response time, which requires close collaborations between all stakeholders involved and distributed intelligence support, leads to greater survival chance of the injured. However, the current response system is far from efficient, despite the rapid development of information and communication technologies. This paper presents an automated collaboration framework for emergency management that coordinates all stakeholders within the emergency response system and fully automates the rescue process. Applying the concept of multiaccess edge computing architecture, as well as choreography of the service oriented architecture, the system allows seamless coordination between multiple organizations in a distributed way through standard web services. A service choreography is designed to globally model the emergency management process from the time an accident occurs until the rescue is finished. The choreography can be synthesized to generate detailed specification on peer-to-peer interaction logic, and then the specification can be enacted and deployed on cloud infrastructures.

  • 7.
    Chen, Lei
    et al.
    RISE, Swedish ICT, Viktoria.
    Habibovic, Azra
    RISE, Swedish ICT, Viktoria.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria. Halmstad University, Sweden.
    Voronov, Alexey
    RISE, Swedish ICT, Viktoria.
    Walter, Anders
    Swedish Road Administration, Sweden.
    Coordinating Dangerous Goods Vehicles: C-ITS Applications for Safe Road Tunnels2015In: 2015 IEEE Intelligent Vehicles Symposium (IV), 2015, p. 156-161, article id 7225679Conference paper (Refereed)
    Abstract [en]

    Despite the existing regulation efforts and measures, vehicles with dangerous goods still pose significant risks on public safety, especially in road tunnels. Solutions based on cooperative intelligent transportation system (C-ITS) are promising measures, however, they have received limited attention. We propose C-ITS applications that coordinate dangerous goods vehicles to minimize the risk by maintaining safe distances between them in road tunnels. Different mechanisms, including global centralized coordination, global distributed coordination, and local coordination, are proposed and investigated. A preliminary simulation is performed and demonstrates their effectiveness.

  • 8.
    Englund, Cristofer
    et al.
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    RISE, Swedish ICT, Viktoria.
    Ploeg, Jeroen
    TNO Netherlands Organization for Applied Scientific Research, Netherlands.
    Semsar-Kazerooni, Elham
    TNO Netherlands Organization for Applied Scientific Research, Netherlands.
    Voronov, Alexey
    RISE, Swedish ICT, Viktoria.
    Hoang Bengtsson, Hoai
    RISE, Swedish ICT, Viktoria.
    Didoff, Jonas
    RISE, Swedish ICT, Viktoria.
    The Grand Cooperative Driving Challenge (GCDC) 2016: boosting the introduction of Cooperative Automated Vehicles2016In: IEEE wireless communications, ISSN 1536-1284, E-ISSN 1558-0687, Vol. 23, no 4, p. 146-152Article in journal (Refereed)
    Abstract [en]

    The Grand Cooperative Driving Challenge (GCDC), with the aim to boost the introduction of cooperative automated vehicles by means of wireless communication, is presented. Experiences from the previous edition of GCDC, which was held in Helmond in the Netherlands in 2011, are summarized, and an overview and expectations of the challenges in the 2016 edition are discussed. Two challenge scenarios, cooperative platoon merge and cooperative intersection passing, are specified and presented. One demonstration scenario for emergency vehicles is designed to showcase the benefits of cooperative driving. Communications closely follow the newly published cooperative intelligent transport system standards, while interaction protocols are designed for each of the scenarios. For the purpose of interoperability testing, an interactive testing tool is designed and presented. A general summary of the requirements on teams for participating in the challenge is also presented.

  • 9.
    Englund, Cristofer
    et al.
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    RISE, Swedish ICT, Viktoria.
    Vinel, A
    Shih Yang, L
    Future Applications of VANETs2015In: Vehicular ad hoc Networks: Standards, Solutions, and Research, Part V / [ed] Claudia Campolo, Antonella Molinaro, Riccardo Scopigno, Springer Publishing Company, 2015, p. 525-544Chapter in book (Other academic)
    Abstract [en]

    Current transportation systems face great challenges due to the increasing mobility. Traffic accidents, congestion, air pollution, etc., are all calling for new methods to improve the transportation system. With the US legislation in progress over vehicle communications and EU’s finalization of the basic set of standards over cooperative intelligent transportation systems (C-ITS), vehicular ad hoc network (VANET) based applications are expected to address those challenges and provide solutions for a safer, more efficient and sustainable future intelligent transportation systems (ITS). In this chapter, transportation challenges are firstly summarized in respect of safety, efficiency, environmental threat, etc. A brief introduction of the VANET is discussed along with state of the art of VANET-based applications. Based on the current progress and the development trend of VANET, a number of new features of future VANET are identified, together with a set of potential future ITS applications. The on-going research and field operational test projects, which are the major enabling efforts for the future VANET-based C-ITS, are presented. The chapter is of great interest to readers working within ITS for current development status and future trend within the C-ITS area. It is also of interest to general public for an overview of the VANET enabled future transportation system.

  • 10.
    Englund, Cristofer
    et al.
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    Voronov, Alexey
    Cooperative speed harmonization for efficient road utilization2014In: Nets4Cars, 2014Conference paper (Other academic)
  • 11.
    Li, Jun
    et al.
    KTH Royal Institute of Technology, Sweden.
    Shen, Xiaoman
    KTH Royal Institute of Technology, Sweden; Zhejiang University, China..
    Chen, Lei
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Ou, Jiannan
    South China Normal University, China.
    Wosinska, Lena
    KTH Royal Institute of Technology, Sweden.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden.
    Delay-aware bandwidth slicing for service migration in mobile backhaul networks2019In: Journal of Optical Communications and Networking, ISSN 1943-0620, E-ISSN 1943-0639, Vol. 11, no 4, p. B1-B9Article in journal (Refereed)
    Abstract [en]

    Fog computing is expected to be integrated with communication infrastructure, giving rise to the con­cept of fog-enhanced radio access networks (FeRANs) to support various mission-critical applications. Such archi­tecture brings computation capabilities closer to end users, thereby reducing the communication latency to access ser­vices. In the context of FeRAN, service migration is needed to tackle limited resources in a single fog node and to pro­vide continuous service for mobile end users. To support service migration, high capacity and low latency are required in mobile backhaul networks. Passive optical net­works can be a promising solution for such mobile back-haul, in which bandwidth is shared by both migration traffic and that which is not associated with service migra­tion. In this paper, we propose a bandwidth slicing mecha­nism, in which the bandwidth can be provisioned to the migration traffic and non-migration traffic dynamically and effectively to meet their different delay requirements. Simulation results verify that the proposed delay-aware bandwidth slicing scheme can handle the migration traffic properly, i.e., sending it within a required time threshold, while limiting the impact of the migration traffic on the latency and jitter of the non-migration traffic, particularly that with high priority.

  • 12.
    Li, Jun
    et al.
    KTH Royal Institute of Technology, Sweden.
    Shen, Xiaoman
    KTH Royal Institute of Technology, Sweden.
    Chen, Lei
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Pham Van, Dung
    Ericsson, Sweden.
    Ou, Jiannan
    South China Normal University, China.
    Wosinska, Lena
    Chalmers University of Technology, Sweden.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden.
    Service Migration in Fog Computing Enabled Cellular Networks to Support Real-Time Vehicular Communications2019In: IEEE Access, E-ISSN 2169-3536, Vol. 7, p. 13704-13714, article id 8620320Article in journal (Refereed)
    Abstract [en]

    Driven by the increasing number of connected vehicles and related services, powerful communication and computation capabilities are needed for vehicular communications, especially for real-time and safety-related applications. A cellular network consists of radio access technologies, including the current long-term evolution (LTE), the LTE advanced, and the forthcoming 5th generation mobile communication systems. It covers large areas and has the ability to provide high data rate and low latency communication services to mobile users. It is considered the most promising access technology to support real-time vehicular communications. Meanwhile, fog is an emerging architecture for computing, storage, and networking, in which fog nodes can be deployed at base stations to deliver cloud services close to vehicular users. In fog computing-enabled cellular networks, mobility is one of the most critical challenges for vehicular communications to maintain the service continuity and to satisfy the stringent service requirements, especially when the computing and storage resources are limited at the fog nodes. Service migration, relocating services from one fog server to another in a dynamic manner, has been proposed as an effective solution to the mobility problem. To support service migration, both computation and communication techniques need to be considered. Given the importance of protocol design to support the mobility of the vehicles and maintain high network performance, in this paper, we investigate the service migration in the fog computing-enabled cellular networks. We propose a quality-of-service aware scheme based on the existing handover procedures to support the real-time vehicular services. A case study based on a realistic vehicle mobility pattern for Luxembourg scenario is carried out, where the proposed scheme, as well as the benchmarks, are compared by analyzing latency and reliability as well as migration cost.

  • 13.
    Shih Yang, Lin
    et al.
    Halmstad University, Sweden.
    Vinel, Alexey
    Halmstad University, Sweden.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    Adaptive Wavelength Adjustment (AWLA) for Cooperative Speed Harmonization2014In: VNC, 2014, p. 113-114Conference paper (Refereed)
    Abstract [en]

    Traffic merge on express-ways creates bottlenecks for traffic flow that potentially lead to traffic jams, especially in dense traffic. Cooperative speed harmonization (CSH), where vehicles are grouped and associated to virtual speed waves for group-wise joining at intersections, is proven to be efficient for on-ramp traffic merge. Based on CSH and considering variations of traffic density from joining roads, an adaptive wavelength adjustment (AWLA) mechanism is proposed in this paper. AWLA extends CSH by dynamically adjusting the length of segments in virtual waves according to the traffic densities of the joining roads. Therefore, roads with denser traffic may have larger segments to carry more vehicles through the intersection, which may improve the overall performance. Simulation results have shown that AWLA can achieve lower CO2 emissions and shorter travel time compared to CSH with static segment settings.

  • 14.
    Voronov, Alexey
    et al.
    RISE, Swedish ICT, Viktoria.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria. Halmstad University, Sweden.
    Bengtsson, Hoai Hoang
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    RISE, Swedish ICT, Viktoria.
    Ploeg, Jeroen
    TNO Netherlands Organisation for Applied Scientific Research, Netherlands.
    de Jonhg, Jan
    TNO Netherlands Organisation for Applied Scientific Research, Netherlands.
    van de Sluis, Jacco
    TNO Netherlands Organisation for Applied Scientific Research, Netherlands.
    Interactive Test Tool for Interoperable C-ITS Development2015In: 2015 IEEE 18th International Conference on Intelligent Transportation Systems, 2015, p. 1713-1718, article id 7313370Conference paper (Refereed)
    Abstract [en]

    This paper presents the architecture of an Interactive Test Tool (ITT) for interoperability testing of Cooperative Intelligent Transport Systems (C-ITS). Cooperative systems are developed by different manufacturers at different locations, which makes interoperability testing a tedious task. Up until now, interoperability testing is performed during physical meetings where the C-ITS devices are placed within range of wireless communication, and messages are exchanged. The ITT allows distributed (e.g. over the Internet) interoperability testing starting from the network Transport Layer and all the way up to the Application Layer, e.g. to platooning. ITT clients can be implemented as Hardware-in-the-Loop, thus allowing to combine physical and virtual vehicles. Since the ITT considers each client as a black box, manufacturers can test together without revealing internal implementations to each other.

    The architecture of the ITT allows users to easily switch between physical wireless networking and virtual ITT networking. Therefore, only one implementation of the ITS communication stack is required for both development and testing. This reduces the work overhead and ensures that the stack that is used during the testing is the one deployed in the real world. 

  • 15.
    Voronov, Alexey
    et al.
    RISE, Swedish ICT, Viktoria.
    Englund, Cristofer
    RISE, Swedish ICT, Viktoria. Halmstad University, Sweden.
    Hoang Bengtsson, Hoai
    RISE, Swedish ICT, Viktoria.
    Chen, Lei
    RISE, Swedish ICT, Viktoria.
    Ploeg, Jeroen
    TNO Netherlands Organisation for Applied Scientific Research, The Netherlands.
    de Jongh, Jan
    TNO Netherlands Organisation for Applied Scientific Research, The Netherlands.
    van de Sluis, Jacco
    TNO Netherlands Organisation for Applied Scientific Research, The Netherlands.
    Interactive Test Tool for Interoperable C-ITS Development2015In: 2015 IEEE 18th International Conference on Intelligent Transportation Systems, 2015, p. 1713-1718Conference paper (Refereed)
    Abstract [en]

    This paper presents the architecture of an Interactive Test Tool (ITT) for interoperability testing of Cooperative Intelligent Transport Systems (C-ITS). Cooperative systems are developed by different manufacturers at different locations, which makes interoperability testing a tedious task. Up until now, interoperability testing is performed during physical meetings where the C-ITS devices are placed within range of wireless communication, and messages are exchanged. The ITT allows distributed (e.g. over Internet) interoperability testing starting from the network Transport Layer and all the way up to the Application Layer, e.g. to platooning. ITT clients can be implemented as Hardware-in-the-Loop, thus allowing to combine physical and virtual vehicles. Since the ITT considers each client as a black box, manufacturers can test together without revealing internal implementations to each other. The architecture of the ITT allows users to easily switch between physical wireless networking and virtual ITT networking. Therefore, only one implementation of the ITS communication stack is required for both development and testing, which reduces the work overhead and ensures that the stack that is used during the testing is the one deployed in the real world.

  • 16.
    Zhang, Xinhai
    et al.
    KTH Royal Institute of Technology, Sweden.
    Song, Xinwu
    KTH Royal Institute of Technology, Sweden.
    Feng, Lei
    KTH Royal Institute of Technology, Sweden.
    Chen, Lei
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Törngren, Martin
    KTH Royal Institute of Technology, Sweden.
    A case study on achieving fair data age distribution in vehicular communications2017In: Proceedings of the IEEE Real-Time and Embedded Technology and Applications Symposium, RTAS, 2017, p. 307-317Conference paper (Refereed)
    Abstract [en]

    In vehicular communication protocol stacks, received messages may not always be decoded successfully due to the complexity of the decoding functions, the uncertainty of the communication load and the limited computation resources. Even worse, an improper implementation of the protocol stack may cause an unfair data age distribution among all the communicating vehicles (the receiving bias problem). In such cases, some vehicles are almost locked out of the vehicular communication, causing potential safety risk in scenarios such as intersection passing. To our knowledge, this problem has not been systematically studied in the fields of vehicular communication and intelligent transport systems (ITS). This paper analyzes the root of the receiving bias problem and proposes architectural solutions to balance data age distribution. Simulation studies based on commercial devices demonstrate the effectiveness of these solutions. In addition, our system has been successfully applied during the Grand Cooperative Driving Challenge, where complicated scenarios involving platooning maneuvering and intersection coordination were conducted.

1 - 16 of 16
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.7