NON-3GPP TO 3GPP NETWORK HANDOVER OPTIMIZATIONS
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Abstract
The invention relates to 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 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 invention teaches to change the Serving-Gateway in the 3GPP network 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.
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Citations
91 Claims
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1-71. -71. (canceled)
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72. A method for preparing and performing a handover of a mobile node from a non-3GPP network area to a 3GPP network area, wherein the mobile node is attached to the non-3GPP network area, the method comprising the steps of:
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determining the location of the mobile node, determining a mobility management entity in the 3GPP network area based on the determined location of the mobile node, registering the mobile node at the determined mobility management entity, and performing the handover from the non-3GPP network area to the 3GPP network area, wherein the mobile node indicates the determined mobility management entity when attaching to the 3GPP network area. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80, 81, 82)
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83. A mobile node for preparing and performing its handover from a non-3GPP network area to a 3GPP network area, wherein the mobile node is attached to the non-3GPP network area, the mobile node comprising:
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a processor adapted to determine the location of the mobile node, the processor further adapted to determine a mobility management entity in the 3GPP network area based on the determined location of the mobile node, a transmitter adapted to transmit information on the determined mobility management entity to an entity in the 3GPP network area or non-3GPP network area for registering the mobile node at the determined mobility management entity, and the processor is adapted to perform the handover from the non-3GPP network area to the 3GPP network area while indicating the determined mobility management entity when attaching to the 3GPP network area. - View Dependent Claims (84, 85, 86, 87, 88, 89)
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90. An entity in a non-3GPP network area or 3GPP network area for preparing a handover of a mobile node from a non-3GPP network area to a 3GPP network area, wherein the mobile node is attached to the non-3GPP network area, the entity comprising:
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a processor adapted to determine the location of the mobile node, the processor adapted to determine a mobility management entity in the 3GPP network area based on the determined location of the mobile node, the processor adapted to register the mobile node at the determined mobility management entity, a transmitter adapted to transmit information on the determined mobility management entity to the mobile node. - View Dependent Claims (91)
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Specification