User equipment and call recovery method executed by the same
AssigneeSamsung Electronics Co., Ltd.
InventorJianhua LIN
Life of this patent
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Abstract
A user equipment and a call recovery method executed by the user equipment are provided. The call recovery method executed by the user equipment includes: determining whether a protocol data unit PDU session is activated in the user equipment UE and an access mobility management function entity AMF based on PDU session information, and determining whether there is no data radio bearer DRB for bearing International protocol multimedia subsystem IMS signaling based on radio bearer configuration information; and requesting a base station gNB to re-transmit the radio bearer configuration information including the DRB for bearing the IMS signaling if the PDU session is activated in the UE and the AMF and there is no DRB for bearing the IMS signaling.
Claims16
A call recovery method executed by a user equipment (UE), the call recovery method comprising:
- determining whether a protocol data unit (PDU) session is activated in the UE and in an access mobility management function entity (AMF) based on PDU session information;
- determining whether or not there is data radio bearer (DRB) for bearing International protocol multimedia subsystem (IMS) signaling based on radio bearer configuration information;
- and
- requesting a base station (gNB) to re-transmit the radio bearer configuration information including the DRB for bearing the IMS signaling based on the PDU session being activated in the UE and in the AMF and based on a determination that there is no DRB for bearing the IMS signaling.
A user equipment, comprising:
- a memory storing one or more instructions;
- and
- a processor configured to execute the one or more instructions to:
- determine whether a protocol data unit (PDU) session is activated in the UE and in an access mobility management function entity (AMF) based on PDU session information;
- determine whether or not there is data radio bearer (DRB) for bearing International protocol multimedia subsystem (IMS) signaling based on radio bearer configuration information;
- and
- request a base station (gNB) to re-transmit the radio bearer configuration information including the DRB for bearing the IMS signaling based on the PDU session being activated in the UE and in the AMF and based on a determination that there is no DRB for bearing the IMS signaling.
An apparatus comprising:
- a memory storing one or more instructions;
- and
- a processor configured to execute the one or more instructions to:
- determine whether a protocol data unit (PDU) session is activated in the UE;
- determine whether data radio bearer (DRB) is available based on radio bearer configuration information;
- and
- based on the PDU session being activated in the UE and based the DRB being not available, request a base station (gNB) to re-transmit the radio bearer configuration information including the DRB.
Dependencies are inferred from the claim text.