Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Grey Target Tracking and Self-Healing on Vehicular Sensor Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007 Article ID 63503 14 pages doi 2007 63503 Research Article Grey Target Tracking and Self-Healing on Vehicular Sensor Networks Yih-Fuh Wang1 and Lin-Lin Liu2 1 Department of Computer Science and Information Management Leader University No. 188 Sec. 5 Anjhong Rd. Tainan 709 Taiwan 2 Institute of Applied Information Leader University No. 188 Sec. 5 Anjhong Rd. Tainan 709 Taiwan Received 3 October 2006 Revised 30 January 2007 Accepted 6 April 2007 Recommended by Biao Chen The wireless vehicular sensor network VSN has been very useful for many transportation application systems but it does not operate like the traditional wireless sensor network. For safety reason the vehicle-vehicle and vehicle-gateway communication modes must be stable. The motion of the vehicle the environment of the roads and other uncertain traffic conditions all pose challenges to the system. Therefore how to keep link stability becomes an important issue. In this paper we propose a scheme that uses grey target tracking to self-heal or reroute in advance the weak link on an alternative route as failure occurs and makes the whole vehicular sensor network more stable. Although this scheme increases the average latency and control overhead it supports higher survivability and effective reflections on rerouting. Copyright 2007 . Wang and . Liu. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The wireless vehicular sensor network VSN has been widely investigated and proved to be very useful for traffic pattern analysis road surface diagnosis urban environmental monitoring or street-level air pollution monitoring 1 . Unlike the traditional wireless sensor network WSN VSN is composed of hundreds or thousands of .
