【文件属性】:
文件名称:A New Architecture for Data Collection in Vehicular
文件大小:428KB
文件格式:PDF
更新时间:2014-07-22 04:13:54
dissemination, ITS, data collection, data
Vehicular Sensor Networks (VSNs) are an emerging
paradigm in vehicular networks. This new technology uses
different kind of sensing devices available in new vehicles, to
gather information about the driver’s environment (speed,
acceleration, temperature, seats occupations, etc.) in order to
provide a safer, more efficient and more comfortable driving
experience. In this paper, we focus on a particular VSN
architecture, where the ad hoc network is operated by a
telecommunication/service provider (WiMax access point, 2.5/3G
base station) to combine non-valuable individual sensed data and
extract from them effective feedbacks about the situation of the
road in a geographical area (traffic density, unusual traffic
behavior, etc.). In operated VSNs, providers tend to reduce the
traffic load on their network, using unlicensed spectrum
communication medium (IEEE 802.11p, for example). To do so,
we propose CGP (Clustered Gathering Protocol), a cross layer
protocol based on hierarchical and geographical data collection,
aggregation and dissemination mechanisms. We analyze the
performances of CGP using a simulation environment and
realistic mobility models. We demonstrate the feasibility of such
solution and show that CGP offers the operator precious
information without overloading his network.