| 摘要 |
<p>PURPOSE: A method for transmitting data from a server to a mobile communication terminal in a virtual private network is provided to perform a data transmission firstly from a server to a mobile communication terminal in a state that a mobile communication terminal is not connected with a server. CONSTITUTION: An IP(Internet Protocol) backbone is connected by routers. ISP(Internet Service Provider) Edge routers(411,413,415,417) become Edge routers for connecting a CPE(Customer Promise Equipment) router(419). The CPE router is an apparatus for connecting an MN(Mobile Node)(421) to a VPRN(Virtual Private Router Network) at a specific position. The ISP routers(411,413,415,417) are apparatuses operated by Internet service providers and connects data inputted from the CPE router(419) to a VPRN desired by a subscriber. The ISP routers are an IP network based on IP. An IP tunnel is formed between the ISP routers(411,413,415,417) and thus data are transmitted/received. A stub link is formed between the ISP routers(411,413,415,417) and the CPE router(419).</p> |
