| 摘要 |
A method, network element, mobile node, system and computer program product for mobility management in a communication system comprising at least two communication networks, wherein a mobile node is associated with one of the at least two communication networks as a home network and is allocated a global home address, a certificate and a corresponding private key by a home agent of the home network, and wherein the mobile node, when roaming in a communication network other than the home network, requests a binding operation of a current routing address in the other communication network and the global home address at the home agent of the home network, comprising authenticating, at the home agent, the use of the correct allocated global home address by the mobile node by means of a digital signature and the certificate allocated to the mobile node.
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