发明名称 |
MOBILE COMMUNICATION SYSTEM, ACCESS ROUTER, MANAGEMENT DEVICE, AND MOBILE COMMUNICATION METHOD |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize the transfer of a user data packet using a routing address and the detection of handover even when a temporary address is used as a user address. <P>SOLUTION: When receiving the user data packet 8a, in which the temporary address like a care-of address is set to a transmission origin address, from a MIP terminal 50a under connection, access routers 30a-30c assign the routing address to the care-of address and hold the address conversion information. A management device 40 judges whether an existing routing address assigned to the MIP terminal 50a exists or not, on the basis of a unique identifier of the MIP terminal 50a by using the other access routers other than the access router under connection with the MIP terminal 50a; and consequently, judges the presence or the absence of the handover. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
申请公布号 |
JP2005354234(A) |
申请公布日期 |
2005.12.22 |
申请号 |
JP20040170477 |
申请日期 |
2004.06.08 |
申请人 |
NTT DOCOMO INC |
发明人 |
NISHIDA KATSUTOSHI;ISOBE SHINICHI;OKAGAWA TAKATOSHI |
分类号 |
H04L12/901;H04L29/06;H04L29/12;H04W8/02;H04W8/08;H04W8/26;H04W36/00;H04W36/10;H04W36/38;H04W40/34;H04W80/04;H04W88/00;(IPC1-7):H04L12/56;H04Q7/28;H04Q7/22 |
主分类号 |
H04L12/901 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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