Method and system for assigning home agent

摘要

The invention discloses a method and system for assigning a home agent, and the method includes: indicating, by a visited network, to a home network that the visited network supports the home agent assignment; receiving, by the visited network, authorization information from the home network, the authorization information indicates the visited network is authorized for assigning the home agent; and sending, by the visited network, information about an address of the home agent to a mobile node. The invention can remedy the drawback that the home agent can be assigned to the mobile node only in the home network, thus improving the communication efficiency and reducing the delay. Further, an effective control can be enforced on assignment, so that the visited network can indicate to the home network whether it can support assigning of the home agent, and the home network can enforce a control on whether to perform assignment in the visited network.

主权项

1. A method for assigning a home agent, comprising:
indicating, by a visited network, to a home network that the visited network supports the home agent assignment; receiving, by the visited network, authorization information from the home network, the authorization information indicating that the visited network is authorized for assigning the home agent; receiving, by the visited network, a request message from a mobile node, wherein the request message indicates to obtain the home agent; and if the request message indicates the mobile node expects to visit the home agent in the visited network or the home agent in the home network, sending, by the visited network, corresponding information about an address of the home agent to the mobile node according to the request message.