2012 12th International Conference on ITS Telecommunications最新文献_第8页

Multi-hop information spreading methods for appropriate number of terminals in ERESS ERESS中适当数量终端的多跳信息传播方法

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425277

S. Katayama, Y. Takeda, T. Wada, Yong-Bok Choi, H. Okada

{"title":"Multi-hop information spreading methods for appropriate number of terminals in ERESS","authors":"S. Katayama, Y. Takeda, T. Wada, Yong-Bok Choi, H. Okada","doi":"10.1109/ITST.2012.6425277","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425277","url":null,"abstract":"There have been an enormous number of victims by a number of disasters such as fires, earthquakes, terrorisms and chemical explosion around the world. In these disasters, it is very important to detect the occurrence of them as soon as possible, and evacuate people quickly. To cope with these issues, the authors are developing ERESS (Emergency Rescue Evacuation Support System). ERESS is based on Mobile Ad-hoc NETworks (MANET) and aims to reduce the number of victims in panic-type disasters. This system consists of new mobile terminals (handset size) with advanced disaster recognition algorithm and acquires sensor information such as acceleration, direction difference and walking steps. Collected information about them is used for detecting the occurrence of a disaster. However, until now, there is no suitable information spreading method for ERESS to collect their information effectively. In this paper we propose three information spreading methods which are suitable for ERESS. The proposed methods are a TTL (Time To Live) control, a transmission power control, and an integrated method using separated sectors. We show the validity of the proposed methods by computer simulations.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116608819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A farthest-first forwarding algorithm in VANETs VANETs中的一种最远优先转发算法

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425296

Chung-Ming Huang, Shih-Yang Lin, Shih-Hao Wang, Shih-Chin Hsu

{"title":"A farthest-first forwarding algorithm in VANETs","authors":"Chung-Ming Huang, Shih-Yang Lin, Shih-Hao Wang, Shih-Chin Hsu","doi":"10.1109/ITST.2012.6425296","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425296","url":null,"abstract":"In order to reduce the transmission delay between the source vehicle and the destination vehicle, a Farthest-First forwarding algorithm (FF) algorithm is proposed in this paper to find dissemination paths with fewer hop counts, lower transmission delay, and fewer control packets. The proposed FF algorithm utilizes the general idea of the contention-based technique to choose the farthest vehicle from a sender to be a packet forwarder, which is decided by receivers themselves. In the FF algorithm, each receiver waits for a specific time period when a packet is received. The time period is calculated based on the distance between the sender vehicle and each receiver vehicle, and the waiting time period of the farthest vehicle is always less than other nearby vehicles. When the timer expires, farthest vehicle will first forwards the packet. Although the concept of FF algorithm similar to the greedy forwarding algorithm, the message exchanging for neighboring information maintenance in the proposed FF is unnecessary. Compare to the other mechanisms, the simulation results show that of using the proposed FF algorithm can reduce the transmission delay and fewer hop counts, significantly.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129055681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Recursive estimation of vehicle position by using navigation sensor fusion 基于导航传感器融合的车辆位置递归估计

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425236

Shun-Hung Chen, C. Hsu, S. Huang

{"title":"Recursive estimation of vehicle position by using navigation sensor fusion","authors":"Shun-Hung Chen, C. Hsu, S. Huang","doi":"10.1109/ITST.2012.6425236","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425236","url":null,"abstract":"In this paper, a sensor fusion scheme is employed to reduce positioning error of a vehicle since the GPS signal is fail. The vehicular information, such as position, heading direction, and velocity, can be obtained through GPS signal. Generally, the positioning accuracy of commercial GPS module is within the 3 meters, however, the GPS module may disconnect the signals from satellites since the vehicle is maneuvered under shelters, e.g. parking garage, tunnel, high dense urban, etc. Therefore, our proposed methodology is able to improve the estimation accuracy of vehicle position based on dead reckoning method. The first step, the Kalman filter is utilized to reject the noise of velocity measurement which is captured from gearbox and wheel speed sensor and also predict the velocity and displacement of vehicle in next sample time. The second step is to construct the displacement model of the vehicle by adopting ARMA model, which is able to estimate the state of vehicle. Digital map information which is applied to correct the positioning result of ARMA model is addressed in the last step. A real time experiment result of GPS signal lost in a tunnel is carried out to demonstrate the performance of our proposed method.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130252759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

A traffic information dissemination mechanism based on DSRC/WAVE and its applications 基于DSRC/WAVE的交通信息发布机制及其应用

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425258

Han Su, Cheng-Hsuan Cho, Yi-Hong Chu, W. Chang

引用次数: 6

Feasibility of traveling time estimation with mutual comparison of CVP, GVP and VD technologies 基于CVP、GVP和VD技术的行时估计的可行性

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425210

S. Tenqchen, Francis Chang, Kluo-Yueh Chen, Dong-Ling Wu, Shin-Hshun Huang

{"title":"Feasibility of traveling time estimation with mutual comparison of CVP, GVP and VD technologies","authors":"S. Tenqchen, Francis Chang, Kluo-Yueh Chen, Dong-Ling Wu, Shin-Hshun Huang","doi":"10.1109/ITST.2012.6425210","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425210","url":null,"abstract":"This paper proposes a feasibility study of traveling time estimation with mutual comparison of cellular-based vehicle probe (CVP), GPS-based Vehicle Probe and vehicle detection (VD) technologies. The travel time estimation algorithms have been designed for VD, CVP, GVP and some case in EVP (ETC-based Vehicle Probe). We have compared the system performance outputs at National Highway #1, Fast way #66, local governmental road #1 at Taoyuan to Jong-Li, and Sun-Moon Lake area on specific continuous holiday or working days. The outcome of this research is to target a CVP deployment with a percentage rate of 1%, a sample interval of 10 seconds and transmission interval of 30 seconds. Such a system will accurately determine the locations of both incidents and the tail end of traffic jams. It can be used to estimate travel times with mutual comparisons for VD, CVP, GVP, and EVP especially on continuous holidays. If we select the total # of NLU (number of location update) is less than 100 at local road section, then the CVP has good condition at traveling time estimation.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121171800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Road user positioning by RSSI combinations with pavement reflection at real intersection RSSI结合路面反射在真实交叉口进行道路用户定位

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425186

Shoma Hisaka, S. Kamijo

引用次数: 0

A novel multicore SDR architecture for smart vehicle systems 一种新的智能汽车系统多核SDR架构

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425181

Yao-Hua Chen, Chia-Pin Chen, Pei-Wei Hsu, Chunfan Wei, Wei-Min Cheng, Hsun-Lun Huang, Tai-Yuan Cheng, Albert Y. P. Chen

引用次数: 5

Decision-directed polynomial model-based channel estimation for OFDM systems with scattered-pilots 基于决策导向多项式模型的OFDM系统信道估计

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425281

Yih-min Chen, Hsin-Yin Wu, Mong-Yo Lu

{"title":"Decision-directed polynomial model-based channel estimation for OFDM systems with scattered-pilots","authors":"Yih-min Chen, Hsin-Yin Wu, Mong-Yo Lu","doi":"10.1109/ITST.2012.6425281","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425281","url":null,"abstract":"Orthogonal frequency-division multiplexing (OFDM) is an effective technique to cope with frequency-selective fading channels in broadband wireless communications. The performance of this technique depends mainly on the accuracy in channel frequency response (CFR) estimation. Most high performance channel estimation schemes exploit the correlation of the CFRs of subchannels which rely on the knowledge of channel statistics. There are also some model-based methods which are relatively simple in implementation and less dependent of the CFR correlation. However, the proposed model-based methods, applicable to OFDM systems with periodic training blocks, are less spectrally efficient comparing to those with scattered pilots. In this work, we consider the scenario of the OFDM systems with scattered pilots, the model-based method is modified and incorporated with a decision-directed feedback procedure. The proposed scheme achieves improved performance comparing to the traditional model-based methods using scattered pilots. A uncoded BER performance less 0.5 dB away from the ideal CFR performance is demonstrated when DVB-T is considered as the example OFDM system.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115765078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A registration system for aiding in localization and routing in hybrid VANETs 混合 VANET 中辅助定位和路由选择的注册系统

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425271

J. Sheu, Wei-Kai Hu, Rodolfo Eduardo Bol

引用次数: 7

The identification of traffic flow based on edge symmetry 基于边缘对称的交通流识别

2012 12th International Conference on ITS Telecommunications Pub Date : 2012-11-01 DOI: 10.1109/ITST.2012.6425225

Jingjing Chi, Jian Huang, Bowen Du

引用次数: 1