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1.发明公开HANDOVER CONTROL APPARATUS, BASE STATION, EDGE ROUTER, RELAY ROUTER, RADIO TERMINAL APPARATUS, MOBILE COMMUNICATION SYSTEM, AND HANDOVER CONTROL METHOD 有权迄今取得控制设备，基站，网络边缘路由器，路由器中继，无线终端设备，移动通信系统和目前所取得的控制方法
公开(公告)号：EP1422883A4
公开(公告)日：2008-07-02
申请号：EP02762860
申请日：2002-08-26
申请人： NTT DOCOMO INC
发明人： ISOBE SHINICHI , IGARASHI KEN , IWASAKI ATSUSHI
摘要： When a handover is performed with a radio terminal apparatus (30) striding over base stations (34, 36), among edge routers (40, 42) provided in base stations (34, 36), respectively, an edge router (40) which has been connected to a radio terminal device (30) prior to movement instructs a relay router (48) connected to the edge router (40) and all the edge routers (42) of the base station (36) becoming a movement destination candidate to hold data from a communication partner. The data held by the relay router (48) by the instruction is instructed to be transferred to the radio terminal device (30) after movement after the handover and the held data is transferred to the radio terminal device (30). Thus, it is possible to realize packet data transfer to the radio terminal device after movement in the handover control via an optimal route, thereby effectively using the network resource and simplifying the handover processing.
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公开(公告)号：EP2824872A4
公开(公告)日：2015-12-02
申请号：EP13757511
申请日：2013-01-24
申请人： NTT DOCOMO INC
发明人： IGARASHI KEN , KANEKO MANA , SASAKI MAKOTO , IMAI SATORU
IPC分类号： H04L12/46 , G06F15/17 , H04L12/725
CPC分类号： H04L63/0263 , H04L45/308 , H04L45/72 , H04L49/354 , H04L63/0236 , H04L63/0272 , H04L63/10
摘要： A host providing system includes a physical host network switch which determines permission and non-permission of communication on the basis of whether or not information pieces indicating users correlated with information indicating a transmission source and information indicating a transmission destination included in communication data from a physical instance match each other, and controls the communication data on the basis of a determination result. Accordingly, since only communication between instances of the same user is permitted, and thus communication from a physical instance is appropriately controlled, it is possible to ensure security in the system.
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3.发明公开HANDOVER CONTROL APPARATUS, RADIO TERMINAL DEVICE, EDGE ROUTER, ROUTER, MOBILE COMMUNICATION SYSTEM, AND HANDOVER CONTROL METHOD 有权迄今取得的控制装置，无线终端，边缘路由器，路由器，移动通信系统和目前所取得的控制方法
公开(公告)号：EP1427237A4
公开(公告)日：2008-03-19
申请号：EP02765515
申请日：2002-09-12
申请人： NTT DOCOMO INC
发明人： IGARASHI KEN , IWASAKI ATSUSHI , ISOBE SHINICHI
IPC分类号： H04L12/701 , H04W36/00 , H04W36/10 , H04W36/12 , H04W36/36 , H04W36/38 , H04W40/02 , H04W40/34 , H04W40/36 , H04W80/00 , H04W84/02 , H04Q7/38
摘要： A handover control apparatus includes routers (118 to 126) relaying data to a base station and hierarchically connected to the upper node of edge routers (102 to 116) provided for each base station and a gateway apparatus (130). A router (126) which is COR located nearer to a radio terminal device is specified as a relay router among the COR where all the paths reaching CN (132) as a communication partner from each of the edge router (104) as a mobile origin of the radio terminal device (100) and all the edge routers (102, 106) serving as mobile destination candidates are intersected. Thus, it is possible to easily reduce the handover processing time.
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公开(公告)号：EP2824570A4
公开(公告)日：2016-08-10
申请号：EP13757789
申请日：2013-01-24
申请人： NTT DOCOMO INC
发明人： IGARASHI KEN , KANEKO MANA , SASAKI MAKOTO , IMAI SATORU
CPC分类号： G06F9/45558 , G06F9/5077 , G06F2009/4557 , G06F2009/45595
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5.发明公开COMMUNICATION SYSTEM, MULTICAST-CAPABLE ROUTER, TRANSMITTER TERMINAL, RECEIVER TERMINAL, AND COMMUNICATION METHOD 审中-公开通信系统，多播功能的路由器，发送器终端，接收方终端和通信方法
公开(公告)号：EP1667381A4
公开(公告)日：2011-07-27
申请号：EP04747132
申请日：2004-07-07
申请人： NTT DOCOMO INC
发明人： IGARASHI KEN , ISHIDA SO , FUKAZAWA HARUNOBU
CPC分类号： H04L45/00 , H04L12/185 , H04L45/16
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