| 摘要 |
<p>The invention relates to a method for preparing and performing a handover of a mobile node from a non-3GPP network to a 3GPP network. The handover procedure is improved by discovering an appropriate MME in the 3GPP system and by registering the mobile node at the discovered MME, in advance instead of during the actual handover procedure. This includes to first determine the location of the mobile node in the non-3GPP network, so as to be able to detect an MME in the vicinity of the mobile node's current location. The 3GPP contexts are then transmitted to the new MME before the handover is performed. Provided that the MN is informed about the determined MME, it includes the identifier of the selected MME in the appropriate attach message during the handover.</p> |
