Recently, as the demand of indoor location information is increasing, many studies of indoor positioning technology using WiFi are tried. However, most of indoor positioning technology using WiFi is not guaranteed for real-time positioning. Because most of indoor positioning technologies are sensitive to the external RF environment, they have low accuracy. Moreover, channel interference increases to degrade the communication throughput when access points are densely installed to improve the positioning performance. In order to resolve this problem, this paper proposed indoor pedestrian navigation system using locationdedicated WiFi AP and smartphone sensors. Location-dedicated WiFi AP is the multi-directional beacon-AP that has multiple footprints with different BSSIDs. This AP is designed for low power consumption and it is installed at intervals of 30~60m. Thus RF interference hardly occurs in near WiFi network. Indoor pedestrian navigation system calculates current position that is a fusion of positions from pedestrian dead reckoning (PDR) and location-dedicated WiFi AP. PDR calculates the trajectory of pedestrian using steps and the direction using low cost sensors in smartphone. Using beacon signal of location-dedicated WiFi AP and PDR, the position can be determined. Also, this navigation result was applied to the map-matching for smoothing trajectory and pedestrian route guidance. In conclusion, field test are made in order to verify this indoor navigation system.

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