Patent ID: 9680580
Date: 2017-06-13
CPC Classifications: H04B,H04W

Claim:
1. A method in a wireless system, the method comprising: receiving, at a wireless device of the wireless system, over a first network, from each of a plurality of radios of the first network, a respective reference signal, the respective reference signals forming a first set of reference signals comprising a first reference signal received from a first radio of the first network, and a plurality of further reference signals received from the remaining radios of the plurality of radios of the first network; receiving, at the wireless device, over a second network, from each of a plurality of radios of the second network, a respective reference signal, the respective reference signals forming a second set of reference signals comprising a first reference signal received from a first radio of the second network, and a plurality of further reference signals received from the remaining radios of the plurality of radios of the second network, wherein the first radio of the first network and the first radio of the second network are located at a common location; calculating a first set of normalised reference signals from the ratio for each further reference signal of the first set of reference signals with the first reference signal of the first set of reference signals; calculating a second set of normalised reference signals from the ratio for each further reference signal of the second set of reference signals with the first reference signal of the second set of reference signals; determining a mean or a largest distance between predictions of signal loss based on the first set of normalised reference signals and predictions of signal loss based on the second set of normalised reference signals to create an estimate of shadow fading or signal reflectors and determining whether a node in the network is a hidden node using the estimate of shadow fading or signal reflectors.