A Novel 3D Indoor Localization Scheme Using Virtual Access Point

摘要: The global positioning system (GPS) is a popular choice for accurate location sensing and often used in navigation systems. However, GPS fails to operate inside buildings because satellite signals are blocked. Thus, cannot be localization indoors. Moreover, it difficult distinguish between the different floors. Research overcome this problem using ultrawideband (UWB), radio frequency identification (RFID), infrared ray (IR) has been conducted. These methods, however, have drawbacks, such as need an additional communication module database. Wireless local area network (WLAN) access point (AP) widely installed at various locations, these WLAN APs can viable alternative. proposed paper indicates information service set identifier (SSID) of virtual AP. Therefore, merely by scanning signals, mobile users detect their