| 摘要 |
PROBLEM TO BE SOLVED: To set and maintain mobile Transmission Control Protocol(TCP) connection under a mobile environment where an IP address of a mobile terminal/host is continually changed even after the setting of mobile TCP connection by using a mobile TCP connection identification to update the Internet Protocol(IP) address every time the mobile terminal/host roams in a network and the IP address of the mobile terminal/host changes. SOLUTION: A plurality of cells 12 in communication via the Internet include one base station 18 and a plurality of mobile terminal/host T/H 20. Each T/H 20 has a permanent domain name to identify itself and is provided with a domain name server(DNS) to register a domain name under a domain name of a new class. The DNS stores and updates an IP address of the T/H 20, and when the T/H 20 roams in the Internet to connect itself to a new base station 18, the T/H 20 acquires a new IP address and the DNS updates the IP address of the T/H 20 to the new IP address.
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