Method and Apparatus for Mobile Internet Protocol Registrating or Deregistrating

Abstract

A computer program product can be used to store instructions operable in a physical entity in which a destination MIP Foreign Agent (FA) resides. The program product includes code for: obtaining an identity of a mobile terminal (MT ID) and address information of an anchor proxy mobile node or an authenticator; sending a message carrying the MT ID to the anchor proxy mobile node or the authenticator; receiving a credential corresponding to the MT ID sent from the anchor proxy mobile node or the authenticator after the anchor proxy mobile node or the authenticator receives the message carrying the MT ID and searches for the credential corresponding to the MT ID; and implementing MIP registration or deregistration for the mobile terminal using the credential.

What is claimed is: 
     
         1 . A computer program product for storing instructions operable in a physical entity in which a destination MIP Foreign Agent (FA) resides, comprising a non-transitory computer-readable medium comprising code for:
 obtaining an identity of a mobile terminal (MT ID) and address information of an anchor proxy mobile node or an authenticator;   sending a message carrying the MT ID to the anchor proxy mobile node or the authenticator;   receiving a credential corresponding to the MT ID sent from the anchor proxy mobile node or the authenticator after the anchor proxy mobile node or the authenticator receives the message carrying the MT ID and searches for the credential corresponding to the MT ID; and   implementing MIP registration or deregistration for the mobile terminal using the credential.   
     
     
         2 . The computer program product of  claim 1 , wherein the credential is sent to the physical entity in which the destination MIP FA resides via a security channel established between the physical entity in which the destination MIP FA resides and the anchor proxy mobile node or the authenticator. 
     
     
         3 . The computer program product of  claim 1 , wherein the credential request message further carries a transaction ID, the computer program product further comprising code for:
 saving a corresponding relation between the credential request message and the transaction ID;   sending the transaction ID to the physical entity in which the destination MIP FA resides;   searching for the credential request message corresponding to the transaction ID according to the corresponding relation between the credential request message and the transaction ID;   searching for the MT ID according to the credential request message; and   determining the credential corresponding to the MT ID.   
     
     
         4 . The computer program product of  claim 1 , wherein obtaining the address information of the anchor proxy mobile node or the authenticator comprises:
 receiving, by a serving Base Station (BS) a handover request message sent from the mobile terminal, and the handover request message carries the MT ID and a destination BS identity;   sending, by the serving BS, a handover request carrying the MT ID and the address information of the anchor proxy mobile node or the authenticator to a destination BS corresponding the destination BS identity;   sending, by the destination BS, to the physical entity in which the destination MIP FA resides a notification indicating that the mobile terminal is switched to the destination BS, and the notification carries the MT ID and the address information of the anchor proxy mobile node or the authenticator; and   obtaining, by the physical entity in which the destination MIP FA resides, the address information of the anchor proxy mobile node or the authenticator from the notification.   
     
     
         5 . The computer program product of  claim 1 , wherein obtaining the address information of the anchor proxy mobile node or the authenticator comprises:
 receiving, by a destination BS, a Ranging Request sent from the mobile terminal, and the Ranging Request carries the MT ID and a serving BS identity;   sending, by the destination BS, to a serving BS a request for obtaining the address information of the anchor proxy mobile node or the authenticator according to the serving BS identity, the request carries the MT ID;   searching for, by the serving BS, the address information of the anchor proxy mobile node or the authenticator corresponding to the MT ID, and sending the address information of the anchor proxy mobile node or the authenticator to the destination BS;   sending, by the destination BS, to the physical entity in which the destination MIP FA resides a notification indicating that the mobile terminal is switched to the destination BS, and the notification carries the MT ID and the address information of the anchor proxy mobile node or the authenticator; and   obtaining, by the physical entity in which the destination MIP FA resides, the address information of the anchor proxy mobile node or the authenticator.   
     
     
         6 . The computer program product of  claim 5 , wherein
 the anchor proxy mobile node and an authenticator are set in a same entity;   the notification is an authentication key (AK) request; and   the address information of the anchor proxy mobile node is identical to address information of the authenticator.   
     
     
         7 . The computer program product of  claim 1 , further comprising code for:
 receiving a notification sent from a physical entity in which a home serving MIP FA of the mobile terminal resides or the physical entity in which the destination MIP FA resides, the notification is used for indicating that a physical entity in which the MIP FA resides is to be changed and carrying the MT ID and address information of the physical entity in which the destination MIP FA resides; and   sending the address information of the anchor proxy mobile node or the authenticator to the physical entity in which the destination MIP FA resides.   
     
     
         8 . A method for Mobile Internet Protocol (MIP) registering or deregistering, the method comprising:
 receiving a message which is sent from a physical entity in which a destination MIP Foreign Agent (FA) resides and used for carrying an identity of a mobile terminal (MT ID);   searching for a credential saved by the anchor proxy mobile node or the authenticator according to the MT ID;   implementing MIP registration or deregistration using the credential;   receiving a notification which is used for indicating that a physical entity in which a home MIP FA of a mobile terminal resides is to be changed and sent from a physical entity in which a serving MIP FA resides, wherein the notification carries the MT ID and address information of the physical entity in which the destination MIP FA resides; and   sending address information of the anchor proxy mobile node or the authenticator to the physical entity in which the destination MIP FA resides according to the notification.   
     
     
         9 . The method of  claim 8 , further comprising:
 receiving a notification which is used for indicating that a physical entity in which a home MIP FA of the mobile terminal resides is to be changed and sent from the physical entity in which the destination MIP FA resides; and   sending address information of the anchor proxy mobile node or the authenticator to the physical entity in which the destination MIP FA resides.   
     
     
         10 . A computer program product for storing instructions operable in an anchor proxy mobile node or an authenticator, comprising a non-transitory computer-readable medium comprising code for:
 receiving a message which is sent from a physical entity in which a destination MIP Foreign Agent (FA) resides and used for carrying an identity of a mobile terminal (MT ID);   searching for a credential saved by the anchor proxy mobile node or the authenticator according to the MT ID;   implementing MIP registration or deregistration using the credential;   receiving a notification which is used for indicating that a physical entity in which a home MIP FA of a mobile terminal resides is to be changed and sent from a physical entity in which a serving MIP FA resides, wherein the notification carries the MT ID and address information of the physical entity in which the destination MIP FA resides; and   sending address information of the anchor proxy mobile node or the authenticator to the physical entity in which the destination MIP FA resides according to the notification.   
     
     
         11 . The computer program product of  claim 9 , further comprising code for
 receiving a notification which is used for indicating that a physical entity in which a home MIP FA of the mobile terminal resides is to be changed and sent from the physical entity in which the destination MIP FA resides; and   sending address information of the anchor proxy mobile node or the authenticator to the physical entity in which the destination MIP FA resides.