Patent ID: 9660740
Date: 2017-05-23
CPC Classifications: H04B,H04W

Claim:
1. A signal strength distribution establishing method, configured to establish a signal strength distribution map of an area, utilized in a wireless positioning system, the wireless positioning system comprising a plurality of base stations, the signal strength distribution establishing method comprising: establishing a plurality of distribution functions corresponding to the plurality of base stations, wherein the plurality of distribution functions describe signal strength distributions of signals transmitted from the plurality of base stations, and the plurality of distribution functions is related to a pre-defined function; measuring a plurality of signal strengths on at least a measuring location in the area from the plurality of base stations, to obtain a plurality of signal strength measured values; adjusting the plurality of distribution functions according to the plurality of signal strength measured values corresponding to the at least a measuring location, so as to generate a plurality of adjusted distribution functions; obtaining a plurality of adjusted distribution function values corresponding to the plurality of locations according to the plurality of adjusted distribution functions; generating a plurality of weighting coefficients corresponding to the distribution function values; and computing the plurality of signal strength estimated values corresponding to the plurality of locations according to the distribution function values and the plurality of weighting coefficients, so as to establish the signal strength distribution map; wherein the plurality of distribution functions is unrelated to the plurality of signal strength measured values.