Systems and methods for making channel assignments to reduce interference and increase capacity of wireless networks

A method comprising:

• transmitting, by a mobile station, a first signal to a first base station;
• receiving at the mobile station a first subchannel assignment, the first subchannel assignment corresponding to a first subchannel that comprises a plurality of OFDMA subcarriers selected from a first set of subcarriers reserved for stations with relatively weak signals compared to signals sent to the first base station from one or more other stations in a first cell, the first subchannel assignment being based on a determination that the first signal is relatively weak in comparison to the signals from the one or more other stations;
• transmitting, by the mobile station, a second signal to a second base station;
• and
• receiving, at the mobile station and from the second base station, a second subchannel assignment, the second subchannel assignment corresponding to a second subchannel that comprises a plurality of subcarriers selected from a second set of subcarriers reserved for stations with relatively strong signals in comparison to signals sent to the second base station from one or more additional stations in a second cell adjacent to the first cell, the second subchannel assignment being based on a determination that the second signal is relatively strong in comparison to the signals from the one or more additional stations.

A computing device comprising hardware configured to:

• receive a signal from a mobile station in a first cell;
• measure a signal strength of the signal to produce a first measurement;
• compare the first measurement to one or more other signal strength measurements of signals received from one or more other stations in the first cell to provide a first comparison;
• determine that the received signal strength of the signal is relatively weak based on the first comparison;
• assign the mobile station to a first subchannel comprising a plurality of OFDMA subcarriers selected from a first set of subcarriers reserved for stations with relatively weak signals based on the determination that the received signal is relatively weak, the first subchannel formed by the plurality of OFDMA subcarriers for a predetermined period of time;
• after expiration of a duration of time, re-measure the signal strength of the signal to produce a second measurement;
• responsive to the signal strength being re-measured, compare the second measurement to the one or more other signal strength measurements of the signals received from the one or more other stations in the first cell to provide a second measurement;
• determine that the received signal strength of the signal is relatively strong based on the second comparison;
• and
• responsive to the determination that the received signal strength of the signal is relatively strong, reassign the mobile station to a second subchannel comprising a plurality of subcarriers selected from a second set of subcarriers reserved for stations with relatively strong signals.