2009 IEEE Vehicular Networking Conference (VNC)最新文献_第2页

An analysis of GPS sampling rates required in travel time estimation 旅行时间估计中GPS采样率的分析

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416367

S. Panichpapiboon, W. Pattara-Atikom

引用次数: 2

SLOW: A Practical pseudonym changing scheme for location privacy in VANETs SLOW:一种实用的VANETs位置隐私的假名更改方案

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416380

L. Buttyán, T. Holczer, A. Weimerskirch, William Whyte

{"title":"SLOW: A Practical pseudonym changing scheme for location privacy in VANETs","authors":"L. Buttyán, T. Holczer, A. Weimerskirch, William Whyte","doi":"10.1109/VNC.2009.5416380","DOIUrl":"https://doi.org/10.1109/VNC.2009.5416380","url":null,"abstract":"Untraceability of vehicles is an important requirement in future vehicle communications systems. Unfortunately, heartbeat messages used by many safety applications provide a constant stream of location data, and without any protection measures, they make tracking of vehicles easy even for a passive eavesdropper. One commonly known solution is to transmit heartbeats under pseudonyms that are changed regularly in order to obfuscate the trajectory of vehicles. However, this approach is effective only if some silent period is kept during the pseudonym change and several vehicles change their pseudonyms nearly at the same time and at the same location. Unlike previous works that proposed explicit synchronization between a group of vehicles and/or required pseudonym change in a designated physical area (i.e., a static mix zone), we propose a much simpler approach that does not need any explicit cooperation between vehicles and any infrastructure support. Our basic idea is that vehicles should not transmit heartbeat messages when their speed drops below a given threshold, say 30 km/h, and they should change pseudonym during each such silent period. This ensures that vehicles stopping at traffic lights or moving slowly in a traffic jam will all refrain from transmitting heartbeats and change their pseudonyms nearly at the same time and location. Thus, our scheme ensures both silent periods and synchronized pseudonym change in time and space, but it does so in an implicit way. We also argue that the risk of a fatal accident at a slow speed is low, and therefore, our scheme does not seriously impact safety-of-life. In addition, refraining from sending heartbeat messages when moving at low speed also relieves vehicles of the burden of verifying a potentially large amount of digital signatures, and thus, makes it possible to implement vehicle communications with less expensive equipments.","PeriodicalId":228148,"journal":{"name":"2009 IEEE Vehicular Networking Conference (VNC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130517838","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: 182

A multiple intersection integrated wireless and vehicular network simulator 一个多路口集成无线与车联网模拟器

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416392

Yalcin Balcioglu, F. Özgüner, Ü. Özgüner, K. Redmill

引用次数: 5

Experimental modeling of the effect of adjacent lane traffic on the vehicular channel 相邻车道交通对车辆通道影响的实验模拟

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416369

Haris Kremo, I. Seskar, P. Spasojevic

{"title":"Experimental modeling of the effect of adjacent lane traffic on the vehicular channel","authors":"Haris Kremo, I. Seskar, P. Spasojevic","doi":"10.1109/VNC.2009.5416369","DOIUrl":"https://doi.org/10.1109/VNC.2009.5416369","url":null,"abstract":"Our experimental study measures the effects of a stationary and a moving vehicle on the 22 MHz 802.11b and the 20 MHz 802.11a channel using a vector network analyzer (VNA). The experiments with the vehicle slowly passing by a transmitter-receiver pair correspond to a case study where the communication session occurs in a single lane of a multi-lane highway with a vehicle moving in the adjacent lane. We propose a corresponding ray-tracing model based on the bistatic radar equation which predicts the link power for a given car geometry and the position of transmit and receive antennas. The model converts a near field propagation problem to a superposition of a set of far field sub-problems by representing the vehicle as a set of (sufficiently small) ideally conductive flat tiles. Hence, the channel transfer function is determined as a sum of the line-of-sight (LOS) component and the rays reflected from the tiles. The ray strengths are a function of the effective tile radar cross sections (RCSs). The carefully selected RCS model allows for a good match between the measurements and the resulting ray-tracing model. Both the model and the measurements illustrate that the change in the propagation geometry on the order of centimeters, created by a car passing in the proximity (on the order of meters), results in the change of the signal power at the receiver on the order of several decibels.","PeriodicalId":228148,"journal":{"name":"2009 IEEE Vehicular Networking Conference (VNC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129525630","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: 5

Direction based clustering algorithm for data dissemination in vehicular networks 基于方向的车联网数据分发聚类算法

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416361

N. Maslekar, M. Boussedjra, J. Mouzna, H. Labiod

引用次数: 68

A GNU Radio based testbed implementation with IEEE 1609 WAVE functionality 一个基于GNU Radio的测试平台实现，具有IEEE 1609 WAVE功能

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416372

Scott Biddlestone, K. Redmill

引用次数: 9

Impact of asymmetric traffic densities on delay tolerant vehicular ad hoc networks 非对称交通密度对容错车辆自组织网络的影响

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416376

A. Agarwal, T. Little

{"title":"Impact of asymmetric traffic densities on delay tolerant vehicular ad hoc networks","authors":"A. Agarwal, T. Little","doi":"10.1109/VNC.2009.5416376","DOIUrl":"https://doi.org/10.1109/VNC.2009.5416376","url":null,"abstract":"Vehicular networking can be achieved with short, medium, or long-range communication technologies. However, there are trade-offs in the adoption of these technologies including data capacity, continuity of connections, energy use and contention with other users. We focus on short range technologies that support both near-neighbor communication, for safety applications, and multihop communications for message propagation. Due to frequent network partitioning, opportunistic message exchange is required for message propagation. Earlier studies reveal that messages are suitably propagated in both directions of traffic as vehicle traffic density increases. In this paper we consider asymmetries in traffic density caused by directionality. For example, ‘rush hour’ traffic fills one direction of a roadway while the other direction can be sparse. Performance analysis indicates that data dissemination under asymmetry produces a corresponding asymmetry in message propagation in the direction of higher-density traffic. This result is framed in the context of traffic density regimes and is useful in the design of vehicular networks that leverage short range communications. For a fixed traffic density in one direction, an increase in density from 0 to 20 vehicles/km in the other direction, yields a corresponding increase of 500 m/s to 1000 m/s in the messaging performance depending upon the regime.","PeriodicalId":228148,"journal":{"name":"2009 IEEE Vehicular Networking Conference (VNC)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133534740","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: 12

Adaptive location based TDM protocol for inter-vehicle communication 基于自适应定位的车际通信TDM协议

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416374

M. Ohmori, T. Umedu, T. Higashino

引用次数: 4

Range-based localization for estimating pedestrian trajectory in intersection with roadside anchors 基于距离定位的路边锚点交叉口行人轨迹估计方法

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416366

Weihua Sun, H. Yamaguchi, K. Yasumoto, Minoru Ito

引用次数: 6

Performance analysis of inter-vehicle communications in multilane traffic streams 多车道交通流中车辆间通信性能分析

2009 IEEE Vehicular Networking Conference (VNC) Pub Date : 2009-10-01 DOI: 10.1109/VNC.2009.5416363

Xiaoyan Sun, Yuanlu Bao, Jun Dai, Wei-Kun Lu, Renhua Gao

{"title":"Performance analysis of inter-vehicle communications in multilane traffic streams","authors":"Xiaoyan Sun, Yuanlu Bao, Jun Dai, Wei-Kun Lu, Renhua Gao","doi":"10.1109/VNC.2009.5416363","DOIUrl":"https://doi.org/10.1109/VNC.2009.5416363","url":null,"abstract":"Inter-vehicle communications (IVC) based on mobile ad hoc networks have attracted increasing attention of researchers recently. In this paper, we study the communication performance of IVC networks in multilane dynamic traffic streams. We are concerned with the influence of several traffic factors on multilane communications, such as vehicles' high mobility, traffic directions or relative speed, and traffic density. So several simulations were conducted in network simulator 2 with Monte Carlo method for a penetration rate of 10%. The simulation results show that vehicles' high mobility does not greatly affect the communication of vehicles on different lanes; traffic streams running to opposite directions will distinctly affect each other's communication performance, but the unidirectional traffic streams with a relative speed of 30km/h has no obvious impact; under the bidirectional condition, the increasing of traffic density on one lane cannot markedly improve the communication performance of the IVC networks. These results help to better understand the communication of multilane traffic streams under high mobility scenarios.","PeriodicalId":228148,"journal":{"name":"2009 IEEE Vehicular Networking Conference (VNC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124798301","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