Indoor position determination method and system based on WLAN signal strength

摘要

An indoor position determination method and system based on WLAN signal strength using remote monitoring and cell space environmental attenuation is provided. The indoor position determination method includes a remote monitoring step of collecting information about signal strength from a neighboring AP and generating an AP signal strength table, a position information requesting step of receiving identification information and signal strength of a detected AP from a mobile terminal, and a cell determination step of comparing a signal strength pattern of each AP received from the mobile terminal with a neighboring AP signal strength pattern of each AP with reference to the AP signal strength table and determining a cell having an AP with a most similar pattern as a cell where the mobile terminal is presently located.

主权项

1. An indoor position determination method based on WLAN (Wireless Local Area Network) signal strength, comprising:
a remote monitoring step of collecting information about signal strength from a neighboring AP (Access Points) and generating an AP signal strength table; a position information requesting step of receiving identification information and signal strength of a detected AP from a mobile terminal; and a cell determination step of comparing a signal strength pattern of each AP received from the mobile terminal with a neighboring AP signal strength pattern of each AP with reference to the AP signal strength table and determining a cell having an AP with a most similar pattern as a cell where the mobile terminal is presently located, wherein in a case APs are arranged based on the received signal strength, the cell determination step performs the determination based on a similarity of AP sequences, wherein in the position information requesting step, in a case where identification information and signal strength of three or more APs are received from the mobile terminal, the method further comprises determining a detailed position of the mobile terminal in the cell, where the mobile terminal is determined as being located, by means of triangular surveying; and wherein the detailed position determining step includes calculating a distance from each AP to the mobile terminal in consideration of signal attenuation where at least one of a wall hop count and a floor hop count from each AP is reflected, when using the triangular surveying.