Patent ID: 7836167
Filing Date: 2010-11-16
Classification: H04L

Abstract:
1. A method for monitoring a connection state of a user terminal, the method comprising: sending a browser page to the user terminal, the browser page being sent by a Portal Server when the user terminal accesses a network, wherein the browser page comprises a timer and user connection state information; at the Portal Server, receiving a page updating request packet from the user terminal every time the browser page on the user terminal determines that the timer set therein has timed out; updating an online time of the user terminal after receiving the page updating request packet, wherein the Portal Server performs the updating; and determining a time difference between the online time of said user terminal and a current system time of the Portal Server; calculating a time interval between two consecutive page updating request packets sent by said user terminal; assigning said user terminal to a disconnected state if said time difference is greater than the calculated time interval; assigning said user terminal to a connected state if said time difference is not greater than the calculated time interval; and sending the user connection state information from the Portal Server to the user terminal, wherein the user terminal can update the user connection state information based on the sent information.