Secondary cell group failure detection and reporting
A user equipment (UE) receives an indication that a secondary cell group (SCG) state is to be changed from an activated state to a deactivated state, when the SCG is in the deactivated state, identifies a SCG failure based on downlink timing associated with the SCG and reports the SCG failure to a primary node.
1 . A processor of a user equipment (UE) configured to perform operations comprising:
receiving an indication that a secondary cell group (SCG) state is to be changed from an activated state to a deactivated state;
when the SCG is in the deactivated state, identifying a SCG failure based on a condition associated with a PSCell; and
reporting the SCG failure to a primary node, wherein reporting the SCG failure includes generating a message that comprises a SCG failure type indication set to other-r16, and wherein the SCG failure type indication is set to other in response to the SCG failure being based on the condition associated with the PSCell when the SCG is in the deactivated state.
2 . The processor of claim 1 , wherein reporting the SCG failure includes transmitting the SCG failure type indication to a network.
3 . The processor of claim 1 , wherein the reporting is performed in response to identifying the SCG failure.
4 . The processor of claim 1 , the operations further comprising:
after the identifying, receiving a SCG transition command indicating that the SCG state is to be changed from the deactivated state to the activated state, wherein the reporting is performed in response to the SCG transition command.
5 . The processor of claim 1 , wherein reporting the SCG failure includes transmitting the SCG failure type indication after the UE transmits a response to a SCG activation command.
6 . The processor of claim 1 , wherein reporting the SCG failure includes transmitting a measurement report that comprises an indication of the SCG failure.
7 . The processor of claim 6 , wherein reporting the SCG failure is further based on identifying a measurement event type.
8 . The processor of claim 7 , wherein the measurement event type is an A2 measurement event.
9 . The processor of claim 7 , wherein the measurement event type is configured for SCG failure on a deactivated SCG.
10 . The processor of claim 1 , wherein reporting the SCG failure includes transmitting UE assistance information (UAI) that comprises SCG failure information.
11 . The processor of claim 10 , wherein the UE executes a timer to control a frequency at which the UAI is reported.
12 . The processor of claim 1 , wherein reporting the SCG failure includes transmitting UE assistance information (UAI) that comprises a UE preference for SCG failure.
13 . A user equipment (UE), comprising:
a transceiver configured to communicate with a base station; and
a processor communicatively coupled to the transceiver and configured to perform operations comprising:
receiving an indication that a secondary cell group (SCG) state is to be changed from an activated state to a deactivated state;
when the SCG is in the deactivated state, identifying a SCG failure based on a condition associated with a PSCell; and
reporting the SCG failure to the base station, wherein reporting the SCG failure includes transmitting a message that comprises a SCG failure type indication set to other-r16, and wherein the SCG failure type indication is set to other in response to the SCG failure being based on the condition associated with the PSCell when the SCG is in the deactivated state.
14 . The UE of claim 13 , wherein reporting the SCG failure includes transmitting the SCG failure type indication to the base station.
15 . The UE of claim 13 , wherein the reporting is performed in response to identifying the SCG failure.
16 . The UE of claim 13 , the operations further comprising:
after the identifying, receiving a SCG transition command indicating that the SCG state is to be changed from the deactivated state to the activated state, wherein the reporting is performed in response to the SCG transition command.
17 . The UE of claim 13 , wherein reporting the SCG failure includes transmitting the SCG failure type indication after the UE transmits a response to a SCG activation command.
18 . The UE of claim 13 , wherein reporting the SCG failure includes transmitting a measurement report that comprises an indication of the SCG failure.