Half-rate automatic control method

The invention discloses a half-rate automatic control device, comprising the following: a step of setting, which is to trigger a cell to send a busy message under different busy conditions by setting instructions for an operational maintenance server in a communications network; a step of generating, which is to generate a standard half-rate threshold value of each cell by counting the traffic ofeach cell in the communications network in the scheduled time of duration; a step of acquiring, which is to acquire the busy message sent by the cell in the communications network; and a step of adjusting, which is to decrease or increase the half-rate threshold value of the cell according to the acquired busy message of the cell and the scheduled step length. The method can acquire the traffic busy message sent by each cell in the communications network in real time, thereby dynamically adjusting the half-rate threshold value of the cell in real time according to the busy degree of the traffic, controlling the cell t