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1.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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2.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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