5W-4
Enhancing War-driving for GPS Missing Area
○Tuan Nguyen Anh,藤井陽光,川崎万莉,安積卓也,西尾信彦(立命館大)
Location of a person is important contextual information that can be
used in a variety of scenarios like disaster relief, directional
assistance, context-based advertisements, users behavior tracking
etc. Localization using RF fingersprint method can provides a good
localization performance outdoors but it is not useful inside GPS
missing areas where war-driving to create RF fingersprint is
impossible (such as building, office, station, home etc.). We propose
enhancing war-driving method by collecting accelerometer data instead
of GPS data. The accelerometers are used to recognize the user’s
dynamic activities which are relatively easy to recognize accurately
(walking, going up or down stairs or an elevator) and combine with
wifi data to determine his/her behavior within GPS missing areas.