Patent ID: 7239609
Filing Date: 2007-07-03
Classification: H04L

Abstract:
1. A congestion control system used in a Web service in which a user utilizes the Web to receive contents and provided between Web clients to be operated by users and Web servers for providing contents service to the Web clients, comprising: relay means for relaying contents requests from said Web clients and responses to the contents requests from said Web servers; congestion detecting means for detecting that traffic from one of said Web servers is in a previously defined congestion state; and request regulation means for transmitting, in response to a new contents request addressed to one of said Web servers for which said congestion detecting means detects the congestion state, a connection request regulation message for regulating retransmission of contents requests to the congestion state Web server from one of said Web clients having transmitted the new content request, said request connection regulation message designating a regulation duration for the congestion state Web server, wherein when a contents request including flag information indicating that the request was transmitted after the regulation duration has elapsed is received from the Web client, said relay means forwards the contents request to one of said Web servers unconditionally.