Patent ID: 6453177
Filing Date: 2002-09-17
Classification: H01Q,H04B,H04W

Abstract:
A method of operating a wireless communication system, comprising:transmitting a pilot channel signal from a base station to a mobile station; determining a direction for transmitting a traffic channel signal from the base station to the mobile station; determining a beam width for the traffic channel signal based on a number of frame errors, wherein the traffic channel signal has a 3-dB beam width narrower than the beam width of the pilot channel signal; transmitting the traffic channel signal from the base station and to the mobile station; adjusting a target signal to interference-plus-noise ratio (SINRt) for the mobile station based on the number of frame errors, wherein when a threshold number of frame errors is met or exceeded: increasing the beam width for the traffic channel signal if a first condition is met; increasing the target SINRt if a second condition is met; or leaving the beam width for the traffic channel signal and the target SINRt unchanged if a third condition is met.