Felix Erlacher, Florian Klingler, C. Sommer, F. Dressler
{"title":"On the impact of street width on 5.9 GHz radio signal propagation in vehicular networks","authors":"Felix Erlacher, Florian Klingler, C. Sommer, F. Dressler","doi":"10.1109/WONS.2014.6814735","DOIUrl":"https://doi.org/10.1109/WONS.2014.6814735","url":null,"abstract":"Given the broad acceptance of the DSRC/WAVE protocol stack in the vehicular networking community, both the automotive industry and the scientific community are working towards so-called “day one” applications. Currently, large scale field operational tests are going on to assess the performance of developed protocols and applications. Still, the key technique for performance evaluation is simulation. Accurate microscopic simulation of Inter-Vehicle Communication (IVC) is needed, especially for safety critical applications. This is reflected in many recent publications trying to push this in terms of radio shadowing models, signal propagation, etc. Still, it is not fully understood how to characterize some effects given the constraints in terms of simulation time and performance. We concentrate on the fading model. Simulating freeway scenarios, the Two-Ray Interference model is considered the base line, but what about suburban and city scenarios? This paper looks into this, investigating, for the first time, the impact of the street width, i.e., distance between buildings, and its relation to the correct use of propagation models. We conducted different measurement campaigns on streets with different widths and compare the results to theoretic models that are frequently used for IVC studies. The most prominent result is that we discovered a clear difference when assessing safety applications in wide streets compared to narrow streets.","PeriodicalId":386988,"journal":{"name":"2014 11th Annual Conference on Wireless On-demand Network Systems and Services (WONS)","volume":"195 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114085211","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}
{"title":"Requirement analysis for building practical accident warning systems based on Vehicular Ad-Hoc Networks","authors":"Niaz Chowdhury, L. Mackenzie, C. Perkins","doi":"10.1109/WONS.2014.6814726","DOIUrl":"https://doi.org/10.1109/WONS.2014.6814726","url":null,"abstract":"An Accident Warning System (AWS) is a safety application that provides collision avoidance notifications for next generation vehicles whilst Vehicular Ad-hoc Networks (VANETs) provide the communication functionality to exchange these notifications. Despite much previous research, there is little agreement on the requirements for accident warning systems. In order to build a practical warning system, it is important to ascertain the system requirements, information to be exchanged, and protocols needed for communication between vehicles. This paper presents a practical model of an accident warning system by stipulating the requirements in a realistic manner and thoroughly reviewing previous proposals with a view to identify gaps in this area.","PeriodicalId":386988,"journal":{"name":"2014 11th Annual Conference on Wireless On-demand Network Systems and Services (WONS)","volume":"17 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126934502","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}
{"title":"On performance estimation of prefetching algorithms for streaming content in automotive environments","authors":"Robert Protzmann, Kay Massow, I. Radusch","doi":"10.1109/WONS.2014.6814736","DOIUrl":"https://doi.org/10.1109/WONS.2014.6814736","url":null,"abstract":"Media streaming in automotive environments is becoming more important with the proliferation of 3G/4G technologies and the general demand for consuming internet content in cars. Especially the rising popularity of Music on Demand and Media Cloud Storage services pushes automotive manufactures efforts to provide decent music streaming capabilities in vehicles. This fact has recently brought car manufactures and music streaming services together. Thanks to today's mobile broad band Internet connectivity, music streaming is becoming available in the car. Volvo and Ford have announced to pair up with the popular music streaming service Spotify. Ford does already have a partnership with Rhapsody's music streaming and with the cloud music service Amazon Cloud Player while BMW is going to bring Rara to their vehicles.","PeriodicalId":386988,"journal":{"name":"2014 11th Annual Conference on Wireless On-demand Network Systems and Services (WONS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122675763","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}
{"title":"A deterministic radio propagation model for inter-paraglider communication","authors":"Juergen Eckert, D. Eckhoff, R. German","doi":"10.1109/WONS.2014.6814734","DOIUrl":"https://doi.org/10.1109/WONS.2014.6814734","url":null,"abstract":"It has been shown that paragliders could considerably benefit from ad-hoc communication, be it for safety or the prolonging of flight times through the exchange of thermal information. The simulation of these so called Flying Ad-Hoc Networks (FANETs) can help evaluate the feasibility and performance of these and other applications inexpensively and at large scale. Their specific communication characteristics, caused by inevitable suboptimal antenna placement and 3D node distribution, require accurate channel and propagation models in order to produce meaningful results in a simulation environment. We identify two important parameters that heavily influence the Received Signal Strength (RSS), namely the vertical angle between paragliders and their horizontal relative bearing. Based on extensive real life experiments we present a deterministic and computationally inexpensive radio propagation model that is able to reliably predict our measurements. Our work allows the realistic simulation of wireless communication between paragliders.","PeriodicalId":386988,"journal":{"name":"2014 11th Annual Conference on Wireless On-demand Network Systems and Services (WONS)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132132020","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}
{"title":"Spray: A multi-modal localization system for stationary sensor network deployment","authors":"Niklas Wirström, P. Misra, T. Voigt","doi":"10.1109/WONS.2014.6814718","DOIUrl":"https://doi.org/10.1109/WONS.2014.6814718","url":null,"abstract":"We present a localization system that targets rapid deployment of stationary wireless sensor networks (WSN). The system uses a particle filter to fuse measurements from multiple localization modalities, such as RF ranging, neighbor information or maps, to obtain position estimations with higher accuracy than that of the individual modalities. The system isolates different modalities into separate components which can be included or excluded independently to tailor the system to a specific scenario. We show that position estimations can be improved with our system by combining multiple modalities. We evaluate the performance of the system in both an indoor and outdoor environment using combinations of five different modalities. Using two anchor nodes as reference points and combining all five modalities, we obtain RMS (Root Mean Square) estimation errors of approximately 2.5 m in both cases, while using the components individually results in errors within the range of 3.5 and 9 m.","PeriodicalId":386988,"journal":{"name":"2014 11th Annual Conference on Wireless On-demand Network Systems and Services (WONS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125934679","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}