Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications最新文献_第2页

BRAVE: bit-rate adaptation in vehicular environments BRAVE:在车辆环境中的比特率适应

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307897

P. Deshpande, Samir R Das

{"title":"BRAVE: bit-rate adaptation in vehicular environments","authors":"P. Deshpande, Samir R Das","doi":"10.1145/2307888.2307897","DOIUrl":"https://doi.org/10.1145/2307888.2307897","url":null,"abstract":"Rate selection in a wireless network is the problem of estimating the current channel conditions and determining the best physical layer bit rate for the outgoing frames in order to maximize the current throughput. All rate adaptation algorithms in literature arrive at an estimate of the current channel conditions by considering the recent history often in the order of seconds. In vehicular WiFi access networks, the constantly changing wireless channel conditions make the channel history quickly irrelevant. We develop BRAVE - an SNR-based rate adaptation algorithm, which only considers short history (500 ms) to make rate selection decisions. We show that a coarse-grained training approach is sufficient to estimate the SNR thresholds for rate selection as opposed to previous approaches that train on a per environment or a per AP basis. We study three frame-based rate adaptation algorithms and a popular SNR-based rate adaptation algorithm along with BRAVE and highlight their shortcomings in the rapidly changing vehicular WiFi access environment. In order to compare the algorithms under repeatable channel conditions, we also develop and use a novel emulation methodology where a software radio-based programmable noise generator is used to emulate varying link quality under vehicular mobility. We show that BRAVE performs significantly better than several prominent frame-based and the SNR-based rate adaptation algorithms.","PeriodicalId":360427,"journal":{"name":"Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121279871","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: 14

A methodology for the development of novel VANET safety applications 一种开发新型VANET安全应用的方法

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307911

P. Szczurek, Bo Xu, O. Wolfson, Jie Lin

引用次数: 7

Analyzing dissemination redundancy to achieve data consistency in VANETs 分析VANETs中传播冗余，实现数据一致性

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307914

S. Dietzel, J. Petit, F. Kargl, G. Heijenk

引用次数: 5

A mobile systems perspective on vehicular networks 车载网络的移动系统视角

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307890

M. Gruteser

{"title":"A mobile systems perspective on vehicular networks","authors":"M. Gruteser","doi":"10.1145/2307888.2307890","DOIUrl":"https://doi.org/10.1145/2307888.2307890","url":null,"abstract":"To date the vehicular networks community has primarily focused on designing vehicle-to-vehicle communication systems that can communicate reliably in environments with high mobility and rapidly varying vehicle density. As standards for vehicular communications are maturing, it is becoming increasingly important to understand how these communication systems can and should interact with other technologies in vehicular systems. Vehicles have become rich computing systems with access to a plethora of sensors and actuators. In addition, the dazzling innovation in smartphones, mobile apps, and other mobile devices is not only providing an alternate computing and communication platform inside vehicles - it also creates demand for innovations in vehicle computing systems, such as app stores for cars. This talk will first review our work on using smartphones for traffic monitoring, using vehicle mounted sensors for identifying parking spaces, and in-car localization to reduce driver distraction. Based on lessons learned from these early projects, this talk will then identify challenges and opportunities for mobile systems research in this evolving vehicular context.","PeriodicalId":360427,"journal":{"name":"Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129299978","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: 1

Time-varying channel estimation for OFDM with extended observation window 扩展观测窗OFDM时变信道估计

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307904

Dan Shan, P. Richardson, Weidong Xiang, A. Vasilakos

引用次数: 2

Analytically modelling the performance of piggybacking on beacons in VANETs VANETs中信标承载性能的解析建模

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307898

W. K. Wolterink, G. Heijenk, H. V. D. Berg

引用次数: 6

MoViT: the mobile network virtualized testbed MoViT:移动网络虚拟化试验台

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307892

E. Giordano, Lara Codecà, Brian Geffon, Giulio Grassi, G. Pau, M. Gerla

引用次数: 13

Session details: Poster session 会议详情:海报会议

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/3253527

F. Kargl

引用次数: 0

A novel use of EDCA to improve vehicle safety communication EDCA在车辆安全通讯中的新应用

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307910

Sarah Sharafkandi, G. Bansal, J. Kenney, D. Du

引用次数: 4

Experimental evaluation of cooperative active safety applications based on V2V communications 基于V2V通信的协同主动安全应用实验评估

Proceedings of the ninth ACM international workshop on Vehicular inter-networking, systems, and applications Pub Date : 2012-06-25 DOI: 10.1145/2307888.2307893

M. Sepulcre, J. Gozálvez

引用次数: 40