| 摘要 |
A mobile computing device may be localized in an indoor area based on the strength of wireless network signals accessible in the indoor area from different access points. For efficiency, the localization may be performed in stages. In a first stage, a general geographic area, such as an“island”as will be described below, in which the mobile device is located is identified. In a second stage, an altitude or building level of the mobile device is identified. In a third stage, a position of the mobile device on the identified building level is determined. At least some of these stages of localization may utilize information received at the mobile device from surrounding access points. For example, the island on which the user is located may be determined by identifying at least one access point on that island. Further, decision trees may be executed using input related to a received signal strength from the surrounding access points, and outputs of the decision trees may indicate the device's location. |
