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2012 12th International Conference on ITS Telecommunications最新文献

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Optimal roadside unit deployment in vehicle-to-infrastructure communications 车辆与基础设施通信中最优的路边单元部署
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425291
Po-Chiang Lin
In vehicular communications, roadside units are the key components to collect/disseminate information from/to vehicles. In this paper we investigate the roadside unit deployment problem in vehicle-to-infrastructure communications. This problem is formulated as a constrained optimization problem with the objective to minimize the deployment cost subject to the constraints that all service areas should be covered. The roadside unit deployment problem under consideration is a binary integer programming problem. We solve it by the branch and bound method which could effectively reduce the complexity.
在车辆通信中,路边单元是收集/向车辆发送信息的关键部件。本文研究了车对基础设施通信中的路边单元部署问题。这个问题被表述为一个约束优化问题,其目标是在所有服务领域都应覆盖的约束下最小化部署成本。所考虑的路边单元部署问题是一个二进制整数规划问题。采用分支定界法求解,有效地降低了算法的复杂度。
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引用次数: 17
Field trial of cellular warning for automobiles using geomessaging in Japan 日本利用信息技术对汽车进行蜂窝报警的现场试验
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425228
M. Fujioka, Masanori Takahashi, Takeshi Matsumura, Chunmeng Wang, Hiroyuki Hirakoba
This paper summarizes the background, set-up and results of natural disaster and emergency vehicle warning field trial executed as part of a national Green ITS project in Japan. We used a commercial mobile network as the communication media and ordinary smartphones as terminals for the trial. We used the technique called “geomessaging” developed by Ericsson to identify those cars in the target area to which warning should be sent. The field trial went well and we could get the results as expected but we also found several technical and practical issues.
本文概述了作为日本国家绿色智能交通系统项目一部分的自然灾害和紧急车辆预警现场试验的背景、设置和结果。我们使用商用移动网络作为传播媒介,普通智能手机作为终端进行试验。我们使用爱立信开发的“信息传递”技术来识别目标区域内应该向其发送警告的车辆。现场试验进展顺利,取得了预期的效果,但我们也发现了一些技术和实际问题。
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引用次数: 2
Reducing the environmental impact of taxi operation: The taxi-sharing use case 减少出租车运营对环境的影响:出租车共享用例
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425191
P. D’orey, Ricardo Fernandes, Michel Ferreira
Considering the fast development of urban areas and the increasing environmental awareness, we focus in this paper on a taxi-sharing system for improving the efficiency of public transport. In particular, we present a realistic and large-scale evaluation of the environmental impact of this system. The proposed method improves the efficiency of this form of public transport by determining, on the fly, the best match between taxi user requests, which leads to a reduction of the total and vacant travel distance. Our results show important reductions of CO2 emissions with full deployment of the system, reaching 9% under a higher demand scenario.
考虑到城市的快速发展和人们日益增强的环保意识,本文重点研究了一种出租车共享系统,以提高公共交通的效率。特别是,我们对该系统的环境影响进行了现实和大规模的评估。所提出的方法通过在飞行中确定出租车用户请求之间的最佳匹配,从而减少总行程和空闲行程,从而提高了这种公共交通形式的效率。我们的研究结果表明,在全面部署该系统的情况下,二氧化碳排放量显著减少,在更高需求的情况下达到9%。
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引用次数: 13
A study of DSRC jammer in vehicle safety application testbed DSRC干扰器在汽车安全应用试验台的研究
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425169
C. Liang, Bo-Chiuan Chen
Dedicated Short Range Communication (DSRC) is a key enabling technology for the next generation of communication-based safety applications. One of the important problems for DSRC deployment is maintaining high performance under heavy channel load. Many studies use NS-2 to simulate hundreds vehicles for packet congestion. But in this paper we built on three DSRC WAVE Boxes and one PC. Two devices located in roadside, one located in vehicle. The communication protocol of the DSRC device which set to converter mode is USER Datagram Protocol(UDP). We follow SAE J2735 for message format. The purpose of this standard is to support interoperability among DSRC applications. We installed three WAVE Boxes and PCs in ARTC's test-bed. We set a WAVE Boxes to be a jammer. The jammer can simulate many cars to interfere the communication. After experimented, we can understand the issues needed to consider for the design of the DSRC radio test under heavy channel load, providing the designers for reference in the future not only to solve problems but also help to setup a test-bed for testing DSRC radio under heavy channel load.
专用短程通信(DSRC)是下一代基于通信的安全应用的关键使能技术。DSRC部署的一个重要问题是在高信道负载下保持高性能。许多研究使用NS-2模拟数百辆车的数据包拥塞。但在本文中,我们建立在三个DSRC WAVE盒和一台PC上。两个装置在路边,一个在车内。设置为转换模式的DSRC设备的通信协议为UDP (USER Datagram protocol)。我们遵循SAE J2735的消息格式。该标准的目的是支持DSRC应用程序之间的互操作性。我们在ARTC的测试台上安装了三台WAVE box和pc。我们将WAVE Boxes设置为干扰器。这种干扰机可以模拟多辆车干扰通信。通过实验,我们可以了解在高信道负载下设计DSRC无线电测试需要考虑的问题,为设计人员今后解决问题提供参考,也有助于建立高信道负载下测试DSRC无线电的试验台。
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引用次数: 4
Application of MBSE as a support to the definition of the port informer service in the Italian ports 应用MBSE作为对意大利港口的港口信息服务定义的支持
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425222
Lucio Tirone, S. Sorge, Giada Traballesi
This paper describes an application of the Model Based Systems Engineering (MBSE) approach in a study performed on behalf of the Italian Port Informers Association, with the purpose to provide a solid technical background to the definition of the Port Informer Service (also referred in this paper simply as Service), and to its future evolution. The current Italian legislation does not include such Service neither among the “public utility services” ruled by the Maritime Authority (Coast Guard), nor among the “general interest services” ruled by the Port Authority. The lack of a clear definition of the Service is the source of an uncertain situation, in which the activities of the Port Informers derive from local ordinances issued by the single Harbor Master's Offices (Capitanerie di Porto, local office of the Coast Guard). From a different point of view, the continuous evolution in the technological equipment of the authorities involved in port operations, with systems such as Vessel Traffic Services (VTS), Automatic Identification System (AIS), Port Management and Information System (PMIS) and so on, urges the Port Informers to share a common process of migration, in order to be fully integrated in the exploitation of the opportunities made available by the new technologies. A strong need was thus felt for a new regulation of the services provided by the Port Informers at national level, in order to promote a necessary uniformity in the provision of the Service, and to better support the management of port security, maritime traffic monitoring and navigation security.
本文描述了基于模型的系统工程(MBSE)方法在代表意大利港口情报员协会进行的一项研究中的应用,目的是为港口情报员服务(在本文中也简称为服务)的定义及其未来的发展提供坚实的技术背景。目前的意大利立法既不包括海事管理局(海岸警卫队)管辖的“公用事业服务”,也不包括港务局管辖的“一般利益服务”。由于缺乏对该服务的明确定义,造成了一种不确定的情况,在这种情况下,港口情报员的活动来自于单一的港口负责人办公室(海岸警卫队的地方办事处Capitanerie di Porto)发布的地方条例。从另一个角度来看,涉及港口运作的当局的技术设备不断发展,例如船舶交通服务(VTS)、自动识别系统(AIS)、港口管理和信息系统(PMIS)等系统,促使港口告密者分享共同的迁移过程,以便充分利用新技术提供的机会。因此,迫切需要在国家一级对港口报关员提供的服务作出新的规定,以便促进提供该服务的必要统一,并更好地支助港口安全、海上交通监测和航行安全的管理。
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引用次数: 1
Modulation spectrum exponential weighting for robust speech recognition 稳健语音识别的调制频谱指数加权
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425295
Hao-Teng Fan, Yi-cheng Lian, J. Hung
In this paper, we present a novel scheme to improve the noise robustness of features in speech recognition for vehicle noise environments. In the algorithm termed modulation spectrum exponential weighting (MSEW), the magnitude spectra of feature streams are updated by integrating a reference magnitude spectrum and the original magnitude spectrum with varying exponential weights based on the signal-to-noise ratio (SNR) of the operating environment. Specifically, we present three modes of MSEW, which can be viewed as a generalization of the two algorithms, modulation spectrum replacement/filtering (MSR/MSF). In experiments conducted on the AURORA-2 noisy digit database, the presented MSEW algorithms can achieve better recognition accuracy rates relative to the original MSR and MSF in various vehicle-noise environments.
本文提出了一种新的方案来提高车辆噪声环境下语音识别特征的噪声鲁棒性。在调制频谱指数加权(MSEW)算法中,根据工作环境的信噪比(SNR),通过对参考幅度谱和具有不同指数权重的原始幅度谱进行积分来更新特征流的幅度谱。具体来说,我们提出了三种MSEW模式,它们可以看作是调制频谱替换/滤波(MSR/MSF)两种算法的推广。在AURORA-2噪声数字数据库上进行的实验表明,在各种车辆噪声环境下,相对于原始的MSR和MSF,本文提出的MSEW算法可以获得更好的识别准确率。
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引用次数: 5
Bandwidth aggregation over VANET using the geographic member-centric routing protocol (GMR) 使用地理成员中心路由协议(GMR)在VANET上进行带宽聚合
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425279
Chung-Ming Huang, Tzu-Hua Lin, Kuan-Cheng Tseng
In this paper, we proposed a novel routing protocol called Geographic Member-Centric Routing (GMR) over a VANET that consists of a platoon of vehicles, which have the same starting point, driving route, and destination point, driving in the highway environment. The goal of GMR is to aggregate 3G/3.5G bandwidth from some vehicles called Helpers to a vehicle called Requester, i.e., it belongs to multiple-source single-destination transmission, to have cooperative video streaming service in the platoon of vehicles. For providing a better cooperative video streaming service in the platoon scenario, we (1) utilized the characteristic of platoon mobility, in which platoon members try to drive with each other as close as possible and (2) proposed a member-centric scheme that routes packets through more stable links between platoon members. We also introduced a concept of flow-merging, using which k-hop nodes would forward packets to 1 or more merge-nodes in (k-1)-hop, to reduce interference and packet collision between multiple flows. According to the simulation results, GMR effectively improves the packet delivery ratio and throughput using our proposed member-centric scheme and flow merging scheme. It also shows that the proposed member-centric routing protocol is more suitable than others for 3G/3.5G bandwidth aggregation in the platoon scenario over VANET.
在本文中,我们提出了一种新的路由协议,称为地理成员中心路由(GMR),该路由协议由一排车辆组成,这些车辆具有相同的起点、行驶路线和目的地,在高速公路环境中行驶。GMR的目标是将一些称为helper的车辆的3G/3.5G带宽聚合到一个称为Requester的车辆上,即属于多源单目的地传输,在车辆排中具有协同视频流服务。为了在队列场景下提供更好的协同视频流服务,我们(1)利用队列机动性的特点,在队列成员之间尽可能靠近彼此驾驶;(2)提出了一种以成员为中心的方案,通过队列成员之间更稳定的链路来路由数据包。我们还引入了流合并的概念,使用k-hop节点将数据包转发给(k-1)-hop中的1个或多个合并节点,以减少多个流之间的干扰和数据包碰撞。仿真结果表明,采用我们提出的以成员为中心的方案和流合并方案,GMR有效地提高了分组投递率和吞吐量。结果表明,所提出的以成员为中心的路由协议比其他协议更适合于VANET上分组场景下的3G/3.5G带宽聚合。
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引用次数: 5
Hybrid gamut mapping and dithering algorithm for image reproduction 图像再现的混合色域映射和抖动算法
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425162
Chang-Jing Yang, Yung-Fang Chen
This paper discusses the problems and solutions related to the reproduction of color images on displays. We focus on the problems of false contouring and gamut mismatches. A novel system consisting of a post-dithering algorithm and a hybrid gamut mapping algorithm is proposed to deal with the respective problems. The experimental results show that the proposed system mitigates the false contouring and increases the contrast in images.
本文讨论了显示器彩色图像再现中存在的问题及解决方法。我们的重点是虚假轮廓和色域不匹配的问题。提出了一种由后抖动算法和混合色域映射算法组成的新系统来解决这两个问题。实验结果表明,该系统有效地减轻了图像的虚假轮廓,提高了图像的对比度。
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引用次数: 3
Design and prototype of an in-vehicle road sign delivery system using RFID 使用RFID的车载道路标志传送系统的设计和原型
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425170
A. Paul, Nischit Bharadwaj, Arjun S. Bhat, Sameera Shroff, Venkatesh Seenanna, T. Sitharam
The following paper documents the development of an RFID based system that alerts vehicle drivers about approaching road oddities at an optimum distance before encountering them. The objective is to design a wireless system that delivers road signs (and other road-related information) to the commuter inside his/her vehicle visually and aurally, at an appropriate distance before encountering the corresponding road aberrations. The final aim is to bring about a change in the current road safety paradigm by providing a more efficient and ergonomic electronic alternative to static road signs. In addition to reducing dependency on road signs, the device will also aid in averting accidents and traffic jams, and in better implementing traffic law and order.
下面的论文记录了一种基于RFID的系统的发展,该系统在遇到道路上的奇怪物体之前,以最佳距离提醒车辆驾驶员。目标是设计一种无线系统,在遇到相应的道路畸变之前,在适当的距离内,以视觉和听觉向通勤者提供道路标志(以及其他道路相关信息)。最终目标是通过提供更有效和符合人体工程学的电子替代静态道路标志,改变目前的道路安全模式。除了减少对道路标志的依赖,该设备还将有助于避免事故和交通堵塞,并更好地执行交通法规和秩序。
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引用次数: 10
A high-scalable core telematics platform design for intelligent transport systems 面向智能交通系统的高可扩展核心远程信息处理平台设计
Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425209
Ing-Xiang Chen, Yen-Ching Wu, I-Ching Liao, Yuan-Ying Hsu
With the popularization of telecom/consumer electronics, such as on-board units (OBUs) and personal navigational devices (PNDs), telematics services are becoming more important and practicable in our daily lives. Additionally, when the applications of global positioning system (GPS) are ubiquitous today, OBUs/PNDs can provide people with very convenient location-based services (LBS), plus intelligent transport systems (ITS). To support efficient and effective telecommunications between a huge number of devices and the ITS services, a scalable networking platform is hence demanded. In this paper, we present a high-scalable design to support an open architecture platform for telematics services based on international standards. The proposed core telematics platform (CTP) can optimize the data transmission under linearly increased time complexity by employing a high-scalable architecture design when a large number of devices connect to the application servers. The simulations and experimental results have verified the effectiveness and efficiency of this high-scalable CTP design.
随着通讯/消费电子产品的普及,例如车载设备(OBUs)和个人导航设备(PNDs),远程信息处理服务在我们的日常生活中变得越来越重要和实用。此外,在全球定位系统(GPS)应用广泛的今天,OBUs/ pnd可以为人们提供非常方便的基于位置的服务(LBS),以及智能交通系统(ITS)。为了支持大量设备与智能交通系统服务之间高效和有效的通信,因此需要一个可扩展的网络平台。在本文中,我们提出了一种高可扩展性的设计,以支持基于国际标准的开放式远程信息处理服务架构平台。提出的核心远程信息处理平台(CTP)通过采用高可扩展性的架构设计,可以在大量设备连接到应用服务器时优化线性增加时间复杂度下的数据传输。仿真和实验结果验证了该方案的有效性和高效性。
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引用次数: 4
期刊
2012 12th International Conference on ITS Telecommunications
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