Patent ID: 8254843

Claim:
A method for reducing interference in a mobile network, comprising: determining locations of a plurality of nodes in the mobile network; steering at least one antenna at a first node in the plurality of nodes in the mobile network; estimating intensity of signals from the at least one antenna at each of the plurality of nodes; determining a direction to steer the at least one antenna to reduce interference in which a second node in the plurality of nodes is located at a null in the signals; and steering the at least one antenna in the direction; wherein the step of determining the direction further comprises: computing a first primary-to-secondary ratio when the at least one antenna is pointed at a first node in the plurality of nodes with a highest interference level to form a first direction; responsive to the first primary-to-secondary ratio meeting a specified level, determining that the optimal direction is the first direction; responsive to the first primary-to-secondary ratio not meeting the specified level, computing a second primary-to-secondary ratio when the at least one antenna is pointed such that a second node is in the null in the signals to form a second direction, wherein the second node received a most interference when the at least one antenna was pointed in the first direction; responsive to the second primary-to-secondary ratio meeting the specified level, determining that the optimal direction is the second direction; responsive to the second primary-to-secondary ratio not meeting the specified level, computing a third primary-to-secondary ratio when the at least one antenna is pointed at the second direction and a beam for the signals is incrementally widened to form a third direction; responsive to the third primary-to-secondary ratio meeting the specified level, determining that the optimal direction is the third direction.