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Method and device for accessing and obtaining user equipment context and user equipment identity

  • US 10,681,594 B2
  • Filed: 01/30/2019
  • Issued: 06/09/2020
  • Est. Priority Date: 06/18/2008
  • Status: Active Grant
First Claim
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1. A communication method, comprising:

  • when a user equipment (UE) moves from a tracking area of a first network to a first tracking area of a second network;

    generating, by the UE, a first temporary identity of the second network from a temporary identity of the first network; and

    sending, by the UE, both the first temporary identity of the second network in a first information element (IE) of a first request for updating a tracking area, and a second temporary identity of the second network in a second IE for an additional temporary identity of the second network in the first request, to an entity for mobility management in the second network when the UE determines that the UE holds the second temporary identity of the second network, the second temporary identity allocated by the second network; and

    when the UE moves from a second tracking area of the second network to a third tracking area of the second network;

    sending, by the UE, a third temporary identity of the second network allocated by the second network in a third IE of a second request for updating a tracking area, the third IE corresponding to the first IE, without sending an IE corresponding to the second IE, to the entity for mobility management in the second network.

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