Patent ID: 8700069
Filing Date: 2014-04-15
Classification: G01S,H04W

Abstract:
1. A method of obtaining a subset of radio signal parameters for transmission to a processor for use in a location calculation, the method comprising: obtaining a first set of radio signal parameter measurements at a first time in a first measurement cycle; storing the first set of radio parameter measurements and the first time in an accumulator; obtaining a second set of radio signal parameter measurements at a second time in a second measurement cycle, wherein the difference between the first time and the second time is based on a configurable rate; storing the second set of radio signal parameter measurements and the second time in the accumulator; calculating a value associated with each radio parameter measurement stored in the accumulator, wherein each value indicates the relative value for performing a location calculation, and wherein each value for a radio signal parameter measurement from the first or second measurement cycle is based on the relative age of the respective measurement; selecting one or more radio signal parameter measurements stored in the accumulator based on the one or more associated values to obtain a subset of radio signal parameter measurements, wherein at least one radio signal parameter measurement from the first set and at least one radio signal parameter measurement from the second set are selected; and storing the subset of radio signal parameter measurements for subsequent transmission to a processor for use in the location calculation.