International Workshop on VehiculAr Inter-NETworking最新文献_第3页

Dependable and secure geocast in vehicular networks 车载网络中可靠、安全的地理广播

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860068

E. Schoch, B. Bako, S. Dietzel, F. Kargl

{"title":"Dependable and secure geocast in vehicular networks","authors":"E. Schoch, B. Bako, S. Dietzel, F. Kargl","doi":"10.1145/1860058.1860068","DOIUrl":"https://doi.org/10.1145/1860058.1860068","url":null,"abstract":"Inter-vehicular communication envisions many applications to enhance traffic safety. One fundamental communication paradigm used to realize a wide range of such applications is called Geocast, that is, multi-hop broadcast dissemination of messages within a geographically restricted destination region. Because of the safety-related nature of many VANET applications, it is crucial that Geocast protocols ensure dependable dissemination of information. Here, dependability has two aspects. First, a Geocast protocol needs to scale to varying node densities - reliable delivery should be provided both in sparsely connected networks and also in scenarios with high channel load due to high node density. In addition, Geocast needs to be protected against attacks to achieve dependable dissemination of information even in presence of malicious nodes trying to suppress information delivery. In this work, we focus on the goal of Geocast security. We evaluate the impact of several attacks, and, based on these results, we introduce specific countermeasures against the discovered threats. Particularly, we highlight the intrinsic security properties already present in scalability-enhancing mechanisms. Thus, we show how security and scalability complement each other in Geocast protocols. In summary, our focus are lightweight and efficient measures to secure Geocast for usage in VANETs.","PeriodicalId":416154,"journal":{"name":"International Workshop on VehiculAr Inter-NETworking","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125015656","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: 7

Learning the relevance of parking information in VANETs 学习VANETs中停车信息的相关性

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860074

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

引用次数: 28

Path loss and delay profile models for its in 700mhz band 其在700mhz频段的路径损耗和延迟分布模型

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860070

H. Iwai, Ippei Sugae

引用次数: 6

Fundamental tradeoffs in vehicular ad hoc networks 车辆自组织网络的基本权衡

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860078

M. Nekoui, H. Pishro-Nik

引用次数: 13

Self-organized traffic control 自组织交通控制

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860077

Michel Ferreira, Ricardo Fernandes, Hugo Conceição, Wantanee Viriyasitavat, O. Tonguz

引用次数: 211

Dynamic channel partition and reservation for structured channel access in vehicular networks 车用网络中结构化通道接入的动态通道划分与预留

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860075

R. K. Lam, P. Kumar

{"title":"Dynamic channel partition and reservation for structured channel access in vehicular networks","authors":"R. K. Lam, P. Kumar","doi":"10.1145/1860058.1860075","DOIUrl":"https://doi.org/10.1145/1860058.1860075","url":null,"abstract":"A large portion of vehicular safety applications require reliable broadcasting. IEEE 802.11p has been shown to have doubtful performance in this aspect [2]. In [1] we have proposed a Dynamic Channel Reservation (DCR) protocol to provide low packet loss probability for vehicular communication by exploiting the unique structure of vehicular networks (VANET), and employing a dynamic TDMA mechanism. In this work, we address the situation when there is asymmetric traffic demands from vehicles on the two sides of a roadway, under which condition the throughput performance of unmodified DCR would be significantly degraded, due to its static partition and allocation of TDMA channels to each side of the road. We therefore augment DCR by designing a protocol to dynamically allocate channels to the two sides of the road according to their time-varying traffic demands. Our design replaces the need for vehicles on the two sides to contend for each TDMA channel with a mechanism for them to contend for the boundary between the contiguous sets of channels allocated to the two sides. Preliminary ns-2 simulations show that our design enhances DCR and delivers low packet loss rate and higher throughput regardless of the level of asymmetry of the traffic demand","PeriodicalId":416154,"journal":{"name":"International Workshop on VehiculAr Inter-NETworking","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116929876","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: 16

Supporting handover in an IEEE 802.11p-based wireless access system 在基于IEEE 802.11p的无线接入系统中支持切换

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860073

Jungwook Choi, Hyukjoon Lee

{"title":"Supporting handover in an IEEE 802.11p-based wireless access system","authors":"Jungwook Choi, Hyukjoon Lee","doi":"10.1145/1860058.1860073","DOIUrl":"https://doi.org/10.1145/1860058.1860073","url":null,"abstract":"The IEEE 802.11p-based wireless access networks are about to be deployed by major highways around the world as one of the main information hauling infrastructure for ITS safety applications. As the most applications of the IEEE 802.11p standard require the delivery of short text-based messages, the standard does not support handover between adjacent Road-side Units (RSUs). However, demand for seamless real-time services such as short video clips of CCTVs on a highway gives rise to support for handover in the IEE 802.11p-based wireless access systems. In this paper, we describe a seamless handover scheme for an IEEE 802.11p-based wireless access system that takes advantage of the fixed-order placement of the RSUs and unidirectional movement of the vehicles along the highways. More specifically, this handover scheme utilizes the IEEE 802.11 disassociation message as to signal the old RSU of an On-broad Unit's (OBU) departure from its coverage area. The subsequent downstream data frames can be proactively forwarded to the new RSU for delivery to the OBU after its link establishment with the new RSU. Simulation results show superior performance of the proposed scheme compared to a poll-based scheme.","PeriodicalId":416154,"journal":{"name":"International Workshop on VehiculAr Inter-NETworking","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134370682","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: 21

Simulation-based capacity estimates for local broadcast transmissions 基于模拟的本地广播传输容量估计

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860063

Felix Schmidt-Eisenlohr, H. Hartenstein

引用次数: 6

Store carry and forward relay aided cellular networks 存储、传输和转发中继辅助蜂窝网络

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860071

P. Kolios, V. Friderikos, K. Papadaki

引用次数: 7

A probabilistic model for message propagation in two-dimensional vehicular ad-hoc networks 二维车载自组织网络中消息传播的概率模型

International Workshop on VehiculAr Inter-NETworking Pub Date : 2010-09-24 DOI: 10.1145/1860058.1860064

Yanyan Zhuang, Jianping Pan, Lin X. Cai

{"title":"A probabilistic model for message propagation in two-dimensional vehicular ad-hoc networks","authors":"Yanyan Zhuang, Jianping Pan, Lin X. Cai","doi":"10.1145/1860058.1860064","DOIUrl":"https://doi.org/10.1145/1860058.1860064","url":null,"abstract":"Vehicular ad-hoc networks (VANET) promise to enhance the road safety and travel comfort significantly in both highway and city scenarios. Message propagation, either for emergency or pleasure purposes, constitutes a major category of VANET applications, and is particularly challenging in infrastructure-less vehicle-to-vehicle communication scenarios. In this paper, we study the connectivity property of message propagation in two-dimensional VANET. We first derive the exact expression for the average size of the connected components in the one-dimensional case, i.e., messages propagating along a main street, and give a close approximation to the size distribution. We further derive the connectivity of message propagation in the two-dimensional ladder case, i.e., covering the main and two side streets, and formulate the problem for the two-dimensional lattice case to cover all the blocks in a district. Extensive simulation has been conducted to verify the analytical model and provide further insights in message propagation with and without geographic constraints, respectively. The simulation results show the efficacy of the model and the tradeoff between these two message forwarding strategies, and provide guidelines for future network planning and protocol development.","PeriodicalId":416154,"journal":{"name":"International Workshop on VehiculAr Inter-NETworking","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117215235","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: 42