Patent ID: 8831558

Claim:
A method for calculating statistics of inter-system reselection frequency, comprising: a radio network controller (RNC) collecting user logs of whole network users in which call process is a location area update and/or a routing area update process, wherein the user logs comprise at least: a call origination cell home location area identification (LAI) and corresponding location area update information and/or a call origination cell home routing area identification (RAI) and corresponding routing area update information, a call origination cell identification, a call origination time, and a user identification; wherein the location area update information carries a location area update type and an original LAI before update, and the routing area update information carries a routing area update type and an original RAI before update; and within a given time period, calculating times of inter-system reselection in a user log in which the location area update process is an inter-system LAI update and/or the routing area update process is an inter-system RAI update, so as to obtain a statistics value of the inter-system reselection frequency within the given time period.