Patent ID: 9124367
Filing Date: 2015-09-01
Classification: H04B

Abstract:
1. A method of estimating neighbor cell interference in a node for a wireless communication system, comprising: measuring a total uplink power per a subset of tones; measuring an own channel power per the subset of tones, wherein the subset of tones includes at least one tone; combining for all subsets of tones auxiliary power quantities from at least the total uplink power per subset of tones to form a total auxiliary wideband power for an entire uplink band, wherein the auxiliary power quantities model a thermal noise power floor plus a neighbor cell interference power; recursively calculating, in the node, a thermal noise floor measure based on the total auxiliary wideband power, wherein each auxiliary power quantity comprises a mean value and a variance corresponding to a Gaussian probability distribution for each subset of tones, the Gaussian probability distribution is obtained by optimum filtering, the noise floor measure comprises a conditional probability distribution of the minimum of the total auxiliary power, dividing is performed by a transformation of the conditional probability distribution of the minimum of the total auxiliary power, and the transformation is based on the bandwidth of each subset of tones; and dividing the calculated noise floor measure into sub noise floor measures for each subset of tones based on a bandwidth of each subset of tones to obtain a neighbor cell interference measure for each subset of tones from at least the sub noise floor measures.