Channel resource allocation method of terminal inceptive access

The invention provides a channel resource distributing method in the wireless communication system when the terminal originally switches in, which can distribute suitable channel resource for the terminal, and thus decreasing the mutual disturbance among terminals. According to the method that is provided by the invention, when RNC decides that the terminal switches from non-private channel condition to private condition, Node B can test and get effective direction of arrival information and synchronal timing advanced quantity information, and send the information to RNC through the RACH frame. RNC can confirm the position of the terminal according to the effective direction of arrival information and synchronal timing advanced quantity information, and also collocate suitable channel resource for the terminal at the angle through the terminal to the base station. In this way, the effect of original distribution of private channel resource is effectively improved, and the mutual disturbance between the user i