Communication system and communication control method
First Claim
1. A communication system applied to a second network connected to a first network which has a plurality of first terminal repeaters for a first communication terminal to be connected, and to which a protocol of, even if the first communication terminal changes the first terminal repeater in connection to another, maintaining a communication state before the change is applied, the communication system comprising:
- a second terminal repeater to which a second communication terminal not interpreting the Mobile-IPv6 protocol is connected;
a location information management device for storing location information of the second terminal repeater to which the second communication terminal is connected; and
a route optimization device for receiving the location information of the second terminal repeater, which is transmitted from the location information management device, and for receiving route optimization information containing location information of the first communication terminal, which is transmitted from the first communication terminal;
wherein the route optimization device transmits the route optimization information received from the first communication terminal to the second terminal repeater, based on the location information of the second terminal repeater received from the location information management device, and wherein the second terminal repeater relays a packet transmitted and received between the first communication terminal and the second communication terminal, based on the location information of the first communication terminal in the route optimization information received from the route optimization device.
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Accused Products
Abstract
A communication system 32 is provided with access routers 14, a location information management server 20, and a route optimization server 18. The route optimization server 18 receives a BU message from a Mobile-IP terminal 12A and receives location information of a connected access router 14A from the location information management server 20. Then the route optimization server 18 transmits the BU message to the connected access router 14A, based on the received location information of the connected access router 14A, whereby the connected access router 14A to which the communication terminal 12 is connected is notified of route optimization information. This permits the connected access router 14A to relay a packet transmitted and received between the Mobile-IP terminal 12A and the communication terminal 12, through an optimal route.
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Citations
12 Claims
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1. A communication system applied to a second network connected to a first network which has a plurality of first terminal repeaters for a first communication terminal to be connected, and to which a protocol of, even if the first communication terminal changes the first terminal repeater in connection to another, maintaining a communication state before the change is applied, the communication system comprising:
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a second terminal repeater to which a second communication terminal not interpreting the Mobile-IPv6 protocol is connected;
a location information management device for storing location information of the second terminal repeater to which the second communication terminal is connected; and
a route optimization device for receiving the location information of the second terminal repeater, which is transmitted from the location information management device, and for receiving route optimization information containing location information of the first communication terminal, which is transmitted from the first communication terminal;
wherein the route optimization device transmits the route optimization information received from the first communication terminal to the second terminal repeater, based on the location information of the second terminal repeater received from the location information management device, and wherein the second terminal repeater relays a packet transmitted and received between the first communication terminal and the second communication terminal, based on the location information of the first communication terminal in the route optimization information received from the route optimization device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication control method applied in a communication system applied to a second network connected to a first network which has a plurality of first terminal repeaters for a first communication terminal to be connected, and to which a protocol of, even if the first communication terminal changes the first terminal repeater in connection to another, maintaining a communication state before the change is applied, the communication system comprising:
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a second terminal repeater to which a second communication terminal not interpreting the Mobile-IPv6 protocol is applied;
a location information management device for storing location information of the second terminal repeater to which the second communication terminal is connected; and
a route optimization device for receiving the location information of the second terminal repeater, which is transmitted from the location information management device, and for receiving route optimization information containing location information of the first communication terminal, which is transmitted from the first communication terminal;
the communication control method comprising;
a step wherein the location information management device transmits the location information of the second terminal repeater in storage to the route optimization device;
a step wherein the route optimization device receives the location information of the second terminal repeater from the location information management device;
a step wherein the route optimization device receives the route optimization information transmitted from the first communication terminal;
a step wherein the route optimization device transmits the route optimization information received from the first communication terminal to the second terminal repeater, based on the location information of the second terminal repeater received from the location information management device; and
a step wherein the second terminal repeater relays a packet transmitted and received between the first communication terminal and the second communication terminal, based on the location information of the first communication terminal in the route optimization information received from the route optimization device. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification