Mobile IP supporting quality of service
AssigneeAlcatel-Lucent USA Inc.
InventorsXiaobao Chen, Ioannis Kriaras, Andrea Paparella
Life of this patent
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Abstract
A quality of service session is established between a correspondent node and a mobile node. The mobile node has a home address in a home network is temporarily connected at a care-of address in a foreign network. A modified reply message is generated in the foreign network. The modified reply message has a source address of the mobile node's care-of address and a destination address of the correspondent node. The modified reply message is then transmitted. A capable of supporting such a quality of service session is also disclosed.
Claims14
A method of establishing a session between a correspondent node and a mobile node, the mobile node having a home address in a home network and being temporarily connected at a care-of address in a foreign network, the session being a quality of service session between the correspondent node and the mobile node, the method comprising the steps of:
- generating, in the foreign network, a modified reply message of an Internet Protocol packet having a source address of the mobile node's care-of address in place of the mobile node's home address and having a destination address of the correspondent node;
- transmitting the modified reply message to the correspondent node;
- and
- receiving a modified request message in the foreign network, the modified reply message being generated in response to the receipt of the modified request message in the foreign network, the modified request message being created by replacing a destination address of a request message received in the home network with the mobile node's care-of address, the request message received in the home network having a source address of the correspondent node and a destination address of the mobile node's home address;
- and
- wherein the quality of service session is an RSVP session, the request message is a Path message, and the modified reply message is a Reservation message.
A system configured to support a session, comprising:
- a proxy device, in a foreign network, the proxy device being associated with a mobile node both having a home address in a home network and being temporarily connected at a care-of address in the foreign network, the proxy device being configured for generating a modified reply message of an Internet Protocol packet having a source address of the mobile node's care-of address in place of the mobile node's home address and having a destination address of a correspondent node, the session being a quality of service session between the correspondent node and the mobile node;
- and
- wherein the quality of service session is an RSVP session and the modified reply message is a Reservation message;
- and
- wherein the proxy device is configured to generate the modified reply message responsive to receipt of a modified request message in the foreign network, the modified request message being created by a home agent in response to receiving a request message having a source address of the correspondent node and a destination address of the mobile node's home address, the modified request message being created by the home agent by replacing the destination address of the request message received by the home agent with the mobile node's care-of address, the request message received by the home agent being a Path message.
Dependencies are inferred from the claim text.