Paper Info
Title
Dynamic Balancing of Push and Pull in a Distributed Traffic Information System
Abstract
In this paper, we propose and study a novel dis- tributed vehicle traffic information system using a wireless sensor network. Besides the system model, the contributions of the paper include a road network aware information publication protocol, a distributed query processing protocol with transient memory, and the adaptive interaction model between the two, all in the context of a vehicle traffic information system. Both theoretical and simulation results are presented. I. INTRODUCTION Improving transportation safety, mobility, and efficiency are the key goals of intelligent transportation system (ITS). With the advance of communications and electronics technologies, the vision of ITS is becoming more and more approachable, and research in this area is gaining momentum in recent years. Real-time traffic information system (RTIS) is one of the key enabling components in the ITS vision, by providing vital traffic flow information (e.g. flow speed and congestion level) for intelligent arterial management, freeway manage- ment, transit management, traveler information system, real- time path planning, etc. A few centralized traffic information system concepts (1)(2)(3)(4) have been developed, tested, and evaluated by both the public and the private sectors. While a reasonable starting point for testing, the centralized architecture will eventually face the classic scalability problem when users grows. In this paper we introduce a distributed ad hoc traffic information architecture using a wireless sensor network. A unique perspective of the sensor network's application in the traffic information system domain is that the direction and scope of its information dissemination on the network could be optimized using the knowledge of the road and traffic network. To take advantage of this key observation, we introduce a road- network-aware information publication protocol, a distributed query processing protocol with transient memory, and a model of distributed adaptive interaction between the two for efficient distributed information dissemination and discovery for vehi- cle traffic information applications. Both theoretical model and simulation results are presented. The remainder of paper is organized as follows. Section II introduces the abstract system model our study is based on. Section III describes our information publication and query protocols. Section IV presents some theoretical results. Sec- tion V shows the simulation results, followed by conclusion Section VI. Fig. 1. Road configuration with traffic sensors in the intersections.
Year
DOI
Venue
2007
10.1109/CCNC.2007.42
Las Vegas, NV, USA
Keywords
DocType
ISSN
information architecture,traffic flow,system modeling,context modeling,wireless sensor networks,wireless sensor network,real time,real time systems,protocols,intelligent transportation systems,private sector,information system,information systems,path planning
Conference
2331-9852
ISBN
Citations 
PageRank 
1-4244-0667-6
0
0.34
References 
Authors
2
2
Name
Order
Citations
PageRank
Qingfeng Huang174950.42
Ying Zhang21692118.14