Optimizing power settings in a communication system to mitigate interference
View Patent ↗A method includes a first step of monitoring a noise floor. A next step includes determining if the noise floor crosses a threshold level. A next step includes preventing any further increases in a Common Pilot Channel power level. A next step includes randomly selecting and performing an interference mitigation measure. A next step includes monitoring an interference level. A next step allows further increases in a Common Pilot Channel power level if the interference abates by more than a predetermined amount.
1. A method for optimizing power settings in a communication system, the method comprising the steps of:
monitoring a noise floor in the communication system;
determining if the noise floor crosses a threshold level, whereupon:
preventing any further increases in a Common Pilot Channel power level;
randomly selecting and performing an interference mitigation measure, wherein the interference mitigation measure is selected from the group consisting of: forcing an inter-frequency blind handover for an active call, decreasing a sensitivity, and allowing an interferer to hand-in to an access point coverage;
monitoring an interference level; and
allowing further increases in the Common Pilot Channel power level if the interference abates by more than a predetermined amount.
2. The method of claim 1 , wherein the selecting and performing step further includes conducting a new macro frequency scan at the end of all current calls.
3. The method of claim 2 wherein the selecting and performing step further includes performing a new inter-frequency reconfiguration of an access point.
4. The method of claim 1 wherein if the monitoring an interference step shows no improvement in interference levels, the selecting and performing step is performed again to randomly select and perform a different interference mitigation measure.
5. The method of claim 4 wherein a timing hysteresis is used when switching between interference mitigation measures.
6. An apparatus for optimizing power settings in a communication system, the system comprising:
an access point that monitors a noise floor in the communication system and determines if the noise floor crosses a threshold level, whereupon the access point prevents any further increases in a Common Pilot Channel power level, randomly selects and performs an interference mitigation measure, monitors an interference level, and allows further increases in the Common Pilot Channel power level if the interference abates by more than a predetermined amount;
wherein the interference mitigation measure is selected from the group consisting of: forcing an inter-frequency blind handover for an active call, decreasing a sensitivity of the access point, and indicating to a registration server that it is experiencing interference and the registration server allowing an interferer to hand-in to an access point coverage.