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Optimization of 3GPP network attachment

  • US 8,582,515 B2
  • Filed: 03/12/2009
  • Issued: 11/12/2013
  • Est. Priority Date: 04/24/2008
  • Status: Expired due to Fees
First Claim
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1. A network connection establishment method carried out by a user equipment in a mobile communication system, wherein the mobile communication system comprises plural access networks with different technologies and a plurality of mobility management entities, and wherein the user equipment has plural identities and is within a first of the plural access networks, the method comprising:

  • receiving, via the first of the plural access networks, an indication message indicating whether a context of the user equipment is available at one of the plurality of mobility management entities;

    determining, based on the received indication message, whether the context of the user equipment is valid;

    selecting, based on the determining result, which one of the user equipment'"'"'s plural identities is to be used for establishing a connection to the first or a second of the plural access networks; and

    transmitting the selected user equipment'"'"'s identity to the one of the first or the second of the plural access networks, to which a connection is to be established by the user equipment.

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