Access technology independent identifier generation
AssigneeCisco Technology, Inc.
InventorsRajesh Ramankutty, Sanil Kumar Puthiyandyil, Rajesh Velandy
Life of this patent
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Abstract
A network system for communicating with mobile nodes has multiple gateways that can operate with each using a different access technology. In an IPv6 system, the access gateways each provide an interface identifier to the mobile nodes using the same one or more keys and hash so that different the same interface identifier regardless of the access technology used. The access gateways can have multiple options for using keys and/or hashes to provide an interface identifier such that the method for determining the interface identifier is configurable.
Claims20
A method comprising:
- a mobile node transmitting one or more keys to a first wireless access gateway using a first radio access technology, wherein the one or more keys are unchanging identifiers that are specific to the mobile node;
- the mobile node receiving from the first wireless access gateway a first home address that is a function of an interface identifier that is determinable as a function of the one or more keys;
- the mobile node transmitting the same one or more keys to a second wireless access gateway remote from the first wireless access gateway using a second radio access technology different from the first radio access technology;
- and
- the mobile node receiving from the second wireless access gateway a second home address that is a function of the interface identifier.
A mobile node comprising:
- one or more interfaces configured to communicate with a first wireless access gateway using a first radio access technology and a second wireless access gateway remote from the first wireless access gateway using a second radio access technology;
- and
- a processor configured to transmit one or more keys to the first wireless access gateway using the first radio access technology, wherein the one or more keys are unchanging identifiers that are specific to the mobile node, receive from the first wireless access gateway a first home address that is a function of an interface identifier that is determinable as a function of the one or more keys, transmit the same one or more keys to the second wireless access gateway using the second radio access technology, and receive from the second wireless access gateway a second home address that is a function of the interface identifier.
Software encoded on one or more non-transitory computer-readable media and when executed on a mobile node capable of communicating with a first wireless access gateway using a first radio access technology and a second wireless access gateway remote from the first wireless access gateway using a second radio access technology different from the first radio access technology operable to:
- transmit one or more keys to the first wireless access gateway using the first radio access technology, wherein the one or more keys are unchanging identifiers that are specific to the mobile node;
- receive from the first wireless access gateway a first home address that is a function of an interface identifier that is determinable as a function of the one or more keys;
- transmit the same one or more keys to the second wireless access gateway using the second radio access technology;
- and
- receive from the second wireless access gateway a second home address that is a function of the interface identifier.
Dependencies are inferred from the claim text.