Non-3GPP to 3GPP network handover optimizations

摘要

A method for a handover of a mobile node from a non-3GPP to a 3GPP network, and of a mobile node, which is located in a non-3GPP/3GPP network. The handover is improved by discovering an appropriate MME and registering the mobile node at the discovered mobility management entity (MME), in advance. 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 location. The 3GPP contexts are then transmitted to the new MME before the handover is performed. Moreover, the Serving-Gateway in the 3GPP network is changed before performing a handover, thereby accelerating the handover. When a handover gets likely, the mobile node's location is determined and a new Serving-Gateway is selected. The data path is changed to go via the new Serving-Gateway.

主权项

1. A method for performing a handover of a mobile node from a non-3GPP network to a 3GPP network, wherein the mobile node is connected to the non-3GPP network, the method comprising:
selecting, by an entity in the non-3GPP network, a mobility management entity (MME) in the 3GPP network based on a mapping from the current location of the mobile node in the non-3GPP network to corresponding MMEs; and forwarding, by the entity in the non-3GPP network, a message to the mobile node, the message including information on the MME, wherein the entity in the non-3GPP network is a HRPD (High Rate Packet Data) access node.