Patent ID: 8780708

Claim:
A transmission control system which controls access requests from user terminals to an end server to control congestion of the end server, the transmission control system comprising: a monitoring server for detecting Web pages in which individual user terminals have transited inside a Web site which includes a transaction access request or hyper link to the end server; the monitoring server further for counting the number of user terminals which have transited to the individual Web pages; and a control server for suspending the transaction access requests from the individual user terminals to the end server when the end server is estimated to be overloaded based on monitoring user actions by monitoring the number of user terminals which have transited to a predetermined Web page exceeds a predetermined reference value representative of the acceptance capacity of the end server without directly monitoring the end server; wherein: the predetermined Web page includes a transaction access or hyper link for executing transaction to the end server; the control server changes the predetermined reference value based on the comparison of the number of user terminals which have transited to the predetermined Web page which is to be transited after completing transaction to the end server with the predetermined reference value after applying the suspension; the monitoring server detects the number of user terminals which did not execute the transaction to the end server among the user terminals transited to the predetermined Web page; and the control server changes the predetermined reference value on the basis of the number of user terminals which have transited to the predetermined Web page to be transited after completing the transaction to the end server, the predetermined reference value, and the number of user terminals which did not execute the transaction to the end server.