Communication method
First Claim
1. A communication method executed among a mobile terminal having a home address assigned in a first network and a temporary address assigned in a second network, an agent device surrogating a communication using the home address in the first network and a correspondent terminal communicating with said mobile terminal through said agent device, said communication method comprising:
- making said mobile terminal transmit, when said mobile terminal moves to the second network, information containing the temporary address to said correspondent terminal;
making said correspondent terminal receive the information containing the temporary address of said mobile terminal; and
making said correspondent terminal transmit, to said mobile terminal, the information addressed to the temporary address of said mobile terminal, wherein a communication route without through said agent device is established in advance of starting the communication between said mobile terminal and said correspondent terminal.
1 Assignment
0 Petitions
Accused Products
Abstract
A communication method is capable of preventing an occurrence a change of a route for an underway communication between a mobile node and a correspondent node in a communication network and restraining an unnecessary packet from being forwarded to the correspondent node from the mobile node. The communication method is executed among the mobile node having a home address assigned in a first network and a temporary address assigned in a second network, an agent device surrogating a communication using the home address in the first network and a correspondent terminal communicating with the mobile node through the agent device. When the mobile node moves to the second network, the mobile node transmits information containing the temporary address to the correspondent node, and the correspondent node receives the information containing the temporary address and transmits the information to the temporary address of the mobile node.
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Citations
18 Claims
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1. A communication method executed among a mobile terminal having a home address assigned in a first network and a temporary address assigned in a second network, an agent device surrogating a communication using the home address in the first network and a correspondent terminal communicating with said mobile terminal through said agent device, said communication method comprising:
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making said mobile terminal transmit, when said mobile terminal moves to the second network, information containing the temporary address to said correspondent terminal;
making said correspondent terminal receive the information containing the temporary address of said mobile terminal; and
making said correspondent terminal transmit, to said mobile terminal, the information addressed to the temporary address of said mobile terminal, wherein a communication route without through said agent device is established in advance of starting the communication between said mobile terminal and said correspondent terminal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication method executed among a mobile terminal having a home address assigned in a first network and a first temporary address and a second temporary address assigned in a second network, a first agent device surrogating a communication using the home address in the first network, a second agent device surrogating a communication using the first temporary address, and a correspondent terminal communicating with said mobile terminal through said first agent device and said second agent device, said communication method comprising:
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making said mobile terminal transmit, when said mobile terminal moves to the second network, information containing the temporary address to said correspondent terminal;
making said correspondent terminal receive the information containing the temporary address of said mobile terminal;
making said correspondent terminal transmit, to said mobile terminal, the information addressed to the temporary address of said mobile terminal; and
making said second agent device transmit, to said mobile terminal, information addressed to the second temporary address, wherein a communication route without through said first agent device is established in advance of starting the communication between said mobile terminal and said correspondent terminal. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A terminal device utilized among a mobile terminal having a home address assigned in a first network and a temporary address assigned in a second network, an agent device surrogating a communication using the home address in the first network and a correspondent terminal communicating with said mobile terminal through said agent device, said terminal device comprising:
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a transmitting module transmitting, when said mobile terminal moves to the second network, location information containing the temporary address to said correspondent terminal; and
a receiving module receiving information transmitted by said correspondent terminal;
wherein a communication route without through said agent device is established in advance of starting the communication between said mobile terminal and said correspondent terminal. - View Dependent Claims (14, 15, 16, 17)
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18. A terminal device utilized among a mobile terminal having a home address assigned in a first network and a first temporary address and a second temporary address assigned in a second network, a first agent device surrogating a communication using the home address in the first network, a second agent device surrogating a communication using the first temporary address, and a correspondent terminal communicating with said mobile terminal through said first agent device and said second agent device, said terminal device comprising:
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a transmitting module transmitting, when said mobile terminal moves to the second network, information containing the first temporary address to said correspondent terminal;
a receiving module receiving information addressed to the second temporary address that is transmitted by said second agent device; and
a communication route establishing module establishing a communication route without through said first agent device in advance of starting the communication between said mobile terminal and said correspondent terminal.
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Specification