Patent ID: 6745033
Filing Date: 2004-06-01
Classification: H04W

Abstract:
A method in a cellular telecommunications network of optimizing a handoff border between a present cell and a neighbor cell, said method comprising the steps of:determining a current hysteresis value utilized to ensure that a mobile station (MS) is receiving a stronger signal from the neighbor cell than the present cell before a handoff is performed from the present cell to the neighbor cell, said stronger signal being stronger by the hysteresis value; collecting pairs of signal strength (SS) measurements from a plurality of MSs operating near the handoff border, each SS measurement pair including an SS measurement from the present cell prior to a handoff and an SS measurement from the neighbor cell following the handoff; calculating a midpoint SS by determining an average SS measurement from the present cell, an average SS measurement from the neighbor cell, and an overall average of the average SS measurement from the present cell and the average SS measurement from the neighbor cell; and optimizing the handoff border by subtracting from the current hysteresis value, an amount approximately equal to the difference between the midpoint SS and the average SS measurement from the present cell.