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LINK RE-ESTABLISHMENT METHOD, APPARATUS, AND SYSTEM

  • US 20190320482A1
  • Filed: 06/27/2019
  • Published: 10/17/2019
  • Est. Priority Date: 12/30/2016
  • Status: Active Grant
First Claim
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1. A communication system comprising:

  • a control plane (CP) functional entity and a target radio access node (RAN), whereinthe target RAN is configured to receive a re-establishment request message from user equipment (UE), and send a first message to the CP functional entity based on the re-establishment request message, wherein the re-establishment request message comprises a second message authentication code (MAC) generation parameter and a MAC of the UE, the first message comprises the second MAC generation parameter and the MAC;

    the CP functional entity, configured to receive the first message from the target RAN, and verify the MAC based on the first message;

    when verification of the MAC succeeds, send a context of the UE to the target RAN;

    the target RAN, further configured to receive the context of the UE, and send a re-establishment response message to the UE.

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