Patent ID: 9119214
Filing Date: 2015-08-25
Classification: H04W

Abstract:
1. A method for selecting the best frequency channel to communicate on in a wireless network having one or more underlay nodes using one or more predefined set of frequencies comprising: collecting initial SNR information from initial detection of other underlay nodes by each of the one or more underlay nodes; using collected SNR information to calculate a minimum transmit power for each of the one or more underlay nodes, wherein the minimum transmit power is calculated by a transmitting underlay node transmitting a signal to each intended receiving underlay node; using collected SNR information by each of the one or more underlay nodes to calculate a total exposure for each of the predefined set of frequencies, wherein the total exposure on a given frequency of the predefined set of frequencies is the combination of exposure from all transmitting nodes to all possible receiving nodes integrated over all one or more underlay nodes; adjusting the minimum transmit power by each of the one or more underlay nodes for each of the corresponding intended receiving underlay node such that the signal is received at lowest allowable underlay-to-overlay power ratio, thus minimizing exposure; setting desired underlay-to-overlay ratio by each of the one or more underlay nodes based on capability of cancelling overlay signal and an allowable SINR such that data is successfully received from each of the one or more underlay nodes; and selecting a frequency channel by the underlay nodes is based on least total exposure, wherein the selected frequency is where (x,y) is a location of one or more underlay nodes, N is the total number of underlay nodes, p i,j (f) is the power of one or more underlay node locations.