Mobile router device, mobile network system, and mobile management method of mobile router device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHirokazu Kobayashi, Taisuke Matsumoto
Life of this patent
Estimating the term…
Abstract
A mobile router device connects a mobile network containing several terminal devices and moving in a backbone network with the backbone network. The mobile router device includes: means for deciding whether to operate as a master router which is a router for actually connecting the mobile network with the backbone network; means for recording a virtual address, a care of address which is an address that the mobile router can use at the moving destination; and means for generating and transmitting a binding update message for correlating the virtual address to the care of address when the mobile router device operates as the master router.
Claims18
A mobile router device, to which at least one terminal device attaches, connects a backbone network to a mobile network moving within the backbone network, the mobile router device comprising:
- a means for determining whether or not the mobile router device works as a master router that can connect the mobile network to the backbone network;
- a means for recording a virtual address common to respective mobile router devices attaching to the mobile network, and producing a care of address with respect to the virtual address and usable by the mobile router device per se at a location to which the router device moves;
- and
- a means for generating and transmitting a binding update message which makes the virtual address corresponding to the care of address when the mobile router device works as the master router.
A mobility management method of a mobile router device attaching to a mobile network system, which system comprising:
- at least one terminal device;
- a mobile network including a plurality of mobile router devices, to which the terminal device attaches, for coupling the mobile network to a backbone network;
- and
- a home agent device for associating a home address with a care of address and managing both of the addresses,
- wherein when the mobile network is connected to a home network and when one of the mobile router devices working as a master router is to still work as the master router after a movement, the management method associates a care of address corresponding to a virtual address generated after the movement with the virtual address and registers the care of address with the home agent device, or when one of the mobile router devices working as a backup router is to become the master router after the movement, the managing method associates the care of address corresponding to the virtual address generated after the movement with the virtual address and registers the care of address with the home agent device.
Dependencies are inferred from the claim text.