標題: | An Infrastructure-less Framework for Preventing Rear-End Collisions by Vehicular Sensor Networks |
作者: | Chen, Lien-Wu Peng, Yu-Hao Tseng, Yu-Chee 資訊工程學系 Department of Computer Science |
關鍵字: | Collision prevention;IEEE 802.11p;traffic safety;vehicular sensor network |
公開日期: | 1-三月-2011 |
摘要: | We consider vehicular sensor networks (VSNs) consisting of a large number of sensor nodes deployed on vehicles to facilitate vehicular applications. We try to apply such VSNs to preventing rear-end collisions that are common accidents due to sharp stops. An infrastructure-less framework is proposed, which only relies on vehicles' onboard sensors to prevent such accidents. The proposed framework consists of a distributed warning protocol and a location-based backoff scheme. Vehicle-to- vehicle communications is used to form warning groups, where a warning group is a set of vehicles that drive along the same lane and every pair of adjacent cars is within a certain distance. Only single-hop transmissions are needed to join and leave a group, thus keeping the group maintenance overhead low. When a sudden brake event is detected in a warning group, the location-based backoff scheme can quickly propagate warning messages among its group members. Simulation results show that the proposed approach outperforms existing schemes. |
URI: | http://dx.doi.org/10.1109/LCOMM.2011.011811.100519 http://hdl.handle.net/11536/9214 |
ISSN: | 1089-7798 |
DOI: | 10.1109/LCOMM.2011.011811.100519 |
期刊: | IEEE COMMUNICATIONS LETTERS |
Volume: | 15 |
Issue: | 3 |
起始頁: | 358 |
結束頁: | 360 |
顯示於類別: | 期刊論文 |