Computer Networking: A Top-Down Approach (4th Edition)
Computer Networking: A Top-Down Approach (4th Edition)
IEEE 802.11 Handovers Assisted by GPS Information
WIMOB '06 Proceedings of the 2006 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications
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Air quality is one of the crucial parameters affecting the perceived quality of life, particularly in urban centers, and it is increasingly becoming a concern for public health officials and the citizens themselves. Currently, air-quality monitoring in cities is done mostly through measurement stations located at a small number of fixed data collection points. The use of mobile monitoring stations integrated on a network of public buses creates the possibility of monitoring air quality at many more points in a city, thereby producing a more faithful picture of the spatial distribution of pollutants. One of the technical challenges that this type of monitoring raises is the communication between the atmospheric data-gathering stations and the central server that stores that information in a database. This paper describes part of the infrastructure that is being developed for such a mobile air-quality monitoring system in Lisbon, Portugal. We propose a communication structure based on mobile operator networks to provide monitoring and configuring operations for the measurement stations and a vehicular network based on Wi-Fi ad-hoc communication between stations and a set of Internet access points to provide a way for the atmospheric samples reach the server. A web platform to view the samples collected by the stations and provide remote monitoring and configuring operations is also described.