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Connection establishment method and user equipment

  • US 10,674,481 B2
  • Filed: 03/13/2017
  • Issued: 06/02/2020
  • Est. Priority Date: 11/22/2011
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • sending, by a first user equipment (UE), an attach request message to a base station for triggering the base station to allocate a resource for broadcasting information of the first UE, wherein the attach request message triggers the base station to send an initial UE message that includes the attach request message in a non-access-stratum protocol data unit (NAS-PDU) information element of the initial UE message to a mobility management entity, the attach request message comprises a device-to-device (D2D) capability of the first UE and an indication for a bearer for a D2D connection, the initial UE message indicates the mobility management entity to send an initial context setup request message that includes an attach accept message in a NAS-PDU information element of the initial context setup request message to the base station, and the initial context setup request message indicates that a D2D function is supported in a UE radio capability information element of the initial context setup request message;

    in response to sending the attach request message, receiving, by the first UE from the base station, information about the resource for broadcasting the information of the first UE; and

    broadcasting, by the first UE, the information of the first UE on the resource for establishing the D2D connection with a second UE, wherein the information of the first UE comprises an identifier of the first UE and a service code of the first UE, and the service code of the first UE indicates application layer service information.

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