Method and device for reporting beam failure of secondary serving cell, and storage medium

1. A method for reporting a beam failure of a secondary cell (SCell), the method being performed by user equipment (UE) and comprising:

determining that a first SCell has a beam failure;

determining a target serving cell for transmitting a report message to a base station, the report message being configured to notify the base station that the first SCell has the beam failure; and

transmitting the report message in the target serving cell,

wherein determining the target serving cell for transmitting the report message to the base station comprises:

taking a primary secondary cell (PSCell) of the UE as the target serving cell for transmitting the report message to the base station, the first SCell belonging to a secondary cell group (SCG) controlled by a SCell base station,

wherein transmitting the report message in the target serving cell comprises:

carrying the report message by a resource for a scheduling request (SR) on a Physical Uplink Control Channel (PUCCH) of the target serving cell, the report message comprising a cell identifier of the first SCell and indication information for indicating that the beam failure occurs.

2. The method of claim 1 , wherein transmitting the report message in the target serving cell further comprises:

carrying the report message by a sequential value for transmitting L1-Reference Signal Received Power (L1-RSRP) on at least one of the PUCCH or a Physical Uplink Shared Channel (PUSCH) of the target serving cell.

3. The method of claim 2 , wherein the indication information comprises an identifier of at least one reference signal of the first SCell and L1-RSRP of the at least one reference signal, and indicates that the beam failure occurs when each bit value of the L1-RSRP of the at least one reference signal is a preset bit value.

4. The method of claim 1 , wherein transmitting the report message in the target serving cell further comprises:

carrying the report message by a sequential value for feeding back a channel quality indicator (CQI) on at least one of the PUCCH or a Physical Uplink Shared Channel (PUSCH) of the target serving cell, the report message comprising channel quality information of the first SCell, and indicating that the beam failure occurs when the first SCell has channel quality less than a preset threshold.

5. The method of claim 1 , wherein transmitting the report message in the target serving cell further comprises:

transmitting a report message of a predefined format on at least one of the PUCCH or a Physical Uplink Shared Channel (PUSCH) of the target serving cell, the predefined format specifying a bit for carrying the report message on the at least one of the PUCCH or the PUSCH, a bit value representing a cell identifier of the first SCell, and a bit value representing indication information for indicating that the beam failure occurs.

6. The method of claim 1 , wherein transmitting the report message in the target serving cell further comprises:

receiving a preset Physical Random Access Channel (PRACH) time-frequency code resource from the base station, the preset PRACH time-frequency resource being configured to transmit report information that the first SCell has the beam failure; and

transmitting a preset random access preamble on the preset PRACH time-frequency resource, to notify the base station that the first SCell of the UE has the beam failure.

7. The method of claim 1 , wherein transmitting the report message in the target serving cell further comprises:

receiving configuration signaling from the base station; and

transmitting a time-frequency code resource of the report message through at least one of a PUCCH, a Physical Uplink Shared Channel (PUCCH), or a Physical Random Access Channel (PRACH) configured by the target serving cell based on the configuration signaling.

8. The method of claim 1 , further comprising:

receiving configuration information for beam measurement and report of the first SCell from the base station; and

performing the beam measurement based on the configuration information and reporting a candidate beam obtained by the measurement, the candidate beam being used by the base station for updating a beam configuration of the first SCell.

9. User equipment (UE), comprising:

a processor; and

a memory storing instructions executable by the processor;

wherein the processor is configured to:

determine that a first secondary cell (SCell) has a beam failure;

determine a target serving cell for transmitting a report message to a base station, the report message being configured to notify the base station that the first SCell has the beam failure; and

transmit the report message in the target serving cell,

wherein determining the target serving cell for transmitting the report message to the base station comprises:

taking a primary secondary cell (PSCell) of the UE as the target serving cell for transmitting the report message to the base station, the first SCell belonging to a secondary cell group (SCG) controlled by a SCell base station,

wherein transmitting the report message in the target serving cell comprises:

carrying the report message by a resource for a scheduling request (SR) on a Physical Uplink Control Channel (PUCCH) of the target serving cell, the report message comprising a cell identifier of the first SCell and indication information for indicating that the beam failure occurs.