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AssigneeSamsung Electronics Co., Ltd.
InventorPyung-soo Kim
Estimating the term…
A method and apparatus for managing a mobile Internet protocol (IP) using network address translation (NAT) in a mobile network are provided. The method includes periodically receiving an agent information message from an agent on a network, and checking a connection to a home network or a foreign network. If a connection to the home network is determined based on the agent information message, a global IP address received from the agent of the home network and local IP addresses set a plurality of hosts included in the mobile network are registered, and communication with the home network is performed through conversion between the registered global IP address and each of the registered local IP addresses. If a connection to the foreign network is determined based on the agent information message, a temporary IP address is received from the agent of the foreign network. The temporary IP address is registered with the local IP addresses set at the hosts, and communication with the foreign network is performed through conversions between the registered temporary IP address and each of the registered local IP addresses.
A method for managing a mobile Internet protocol (IP) in a mobile network comprising a plurality of hosts, the method comprising:
An apparatus for managing a mobile Internet protocol (IP) in a mobile network comprising a plurality of hosts, the apparatus comprising:
A computer-readable recording medium on which a method for managing a mobile Internet protocol (IP) in a mobile network is recorded in the form of codes of software which can be executed on a computer, the mobile network comprising a plurality of hosts and a representative host managing the plurality of hosts,
Dependencies are inferred from the claim text.
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Network data management: network addressing or numbering for mobility support
Translation of Internet protocol [IP] addresses: between local and global IP addresses
Wireless network protocols or protocol adaptations to wireless operation: network layer protocols, e.g. mobile IP [Internet Protocol]
Wireless communication networks
Term end not estimated
This application claims the priority of Korean Patent Application No. 02-20240, filed Apr. 13, 2002, which is incorporated herein in its entirety by reference.
1. Field of the Invention
The present invention relates to a mobile Internet protocol (IP) service, and more particularly, to a method and apparatus for managing a mobile IP using network address translation (NAT) in a mobile network.
The above objects and advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
FIGS. 1A and 1B are diagrams showing a conventional network in which a mobile IP is managed;
FIGS. 2A and 2B are diagrams showing a network in which a mobile IP is managed according to the present invention;
Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.
FIGS. 2A and 2B are diagrams showing a network in which a mobile IP is managed according to the present invention. FIG. 2A shows a network in which a mobile network is connected to a home network, while FIG. 2B shows the network in which the mobile network is connected to a foreign network.
Referring to FIGS. 2A and 2B, a plurality of hosts are connected to a representative host, i.e., a mobile network address translator (NAT) host (MNH), thereby forming a mobile network. The MNH may be a router or personal computer (PC) having an NAT function or an NAT device. The MNH manages a plurality of hosts. Whenever the mobile network moves, the MNH is allocated a temporary address, i.e., a care-of address (COA), by a foreign agent (FA) in a foreign network and registers the COA in a home agent (HA) in a home network through the FA, as shown in FIG. 2B. If the FA is rebooted or if the life time of a registration expires almost immediately, the MNH needs to request the FA to re-register the COA. Here, the MNH needs to keep the link-layer address information of the FA and its COA in order to request to re-register the COA.