Synchronization of forward link base station power levels during handoff between base station sectors in mobile radio communication system

一种控制第一和第二基站收发机的传送功率电平的方法和装置，第一和第二基站收发机分别与小区的第一和第二扇区关联。开始时确定到达移动站的通信信号的接收信号强度。功率控制值是基于接收信号强度的。然后从移动站向第一和第二基站收发机发送该功率控制值。接着，尝试在第一基站收发机接收传送的功率控制值，以产生第一接收功率控制值，尝试在第二基站收发机接收传送的功率控制值，以产生第二接收功率控制值，当第一和第二接收功率控制值不相等时，在基站控制器上计算共用传送功率值。然后第一和第二在站收发机根据共用传送功率值传送通信信号。 A system and method is taught for controlling the power level of transmissions within a communication system having a base station, a mobile station, a communication channel, and a pilot channel. The mobile station determines a signal strength value according to a communication signal received by way of the communication channel. A pilot channel signal is determined according to a pilot signal transmitted by way of the pilot channel. The signal to noise ratio of the communication signal is determined according to the determined signal strength value and the pilot channel signal. The power level of a transmission is controlled according to the signal to noise ratio. The noise level in a communication channel within the communication system is estimated. The pilot channel signal includes pilot energy and pilot noise components. The pilot energy component is removed to provide a remaining pilot signal. Communication system operations are controlled according to the remaining pilot signal. The power levels of transmissions are controlled by determining the signal to noise ratio of a signal within the communication channel and determining a difference signal. The difference signal is formed by determining the difference between determined and desired signal to noise ratios. The difference signal is transmitted between the base station and the mobile station. The pilot channel has at least one frame and the power control signal is inserted into the frame. Thus, information representing the strength of the communication signal is transmitted to the base by way of the pilot channel within the frame. The pilot channel can have two information frames for transmitting the power control signal a plurality of times.