Method and apparatus for predicting capacity of packet domain network

The invention provides a method and an apparatus for predicting capacity of a packet domain network. The method comprises the steps of: according to a preset cycle, acquiring values of capacity related parameters of the packet domain network, and according to acquisition results of a plurality of cycles, obtaining a sequence of the capacity related parameters; aiming at the capacity related parameters, using a user number in the packet domain network as an independent variable, using the capacity related parameters as dependent variables, and fitting the sequence of the capacity related parameters by a polynomial curve to obtain a first function relationship between the capacity related parameters and the user number; and according to the first function relationship and a given user number, obtaining values of the capacity related parameters corresponding to the given user number. According to the method and the apparatus which are provided by the invention, by continuously acquiring the values of the capacit