发明授权
US07986641B2 Multicast data communication method, multicast data communication system, repeater, repeating method, and medium for storing repeating programs
有权
组播数据通信方式，组播数据通信系统，中继器，重复方法和存储重复程序的介质
- 专利标题： Multicast data communication method, multicast data communication system, repeater, repeating method, and medium for storing repeating programs
- 专利标题（中）： 组播数据通信方式，组播数据通信系统，中继器，重复方法和存储重复程序的介质
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申请号： US11852618申请日： 2007-09-10
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公开(公告)号： US07986641B2公开(公告)日： 2011-07-26
- 发明人: Seiichiro Tani , Toshiaki Miyazaki , Noriyuki Takahashi , Takahiro Murooka , Shinya Ishihara , Takeru Inoue
- 申请人： Seiichiro Tani , Toshiaki Miyazaki , Noriyuki Takahashi , Takahiro Murooka , Shinya Ishihara , Takeru Inoue
- 申请人地址： JP Tokyo
- 专利权人： Nippon Telegraph and Telephone Corporation
- 当前专利权人： Nippon Telegraph and Telephone Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Leason Ellis LLP.
- 优先权： JP2001-110544 20010409; JP2001-140286 20010510; JP2001-257659 20010828
- 主分类号： H04L12/28
- IPC分类号： H04L12/28 ; H04L12/56 ; G06F15/173 ; G06F15/16
摘要：
A multicast data communication system is provided that has high security, and prevents problems such as an attack by a malicious user creating a great number of meaningless tables at nodes in the network. Clients regularly transmit request packets toward a server; a node receives the request packet, and subsequently receives a delivery-table-creation packet or a delivery packet from the server; if the node has no delivery table corresponding to the server, the node creates the delivery table, registers the addresses of the clients, and their request packet arrival times, and regularly transmits the request packet toward the server; when the node has received a delivery packet from the server, the node duplicates and delivers the delivery packet only to those clients whose request packet arrival times, registered in the delivery table, are within a fixed period from the arrival of the delivery packet.
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