Handover Uplink Transmission

A wireless device comprising:

• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
• receive one or more radio resource control (RRC) messages indicating:
• a handover from a first cell to a second cell;
• and
• a synchronization signal block (SSB), of the second cell, for receiving a downlink control information (DCI) from the second cell;
• receive, from the second cell and based on a demodulation reference signal (DMRS) antenna port being quasi co-located with the SSB, the DCI scheduling an uplink transmission, wherein the uplink transmission is an initial uplink transmission, to the second cell, after receiving the one or more RRC messages indicating the handover;
• and
• transmit, to the second cell and based on the SSB indicated by the one or more RRC messages, the uplink transmission.

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:

• receive one or more radio resource control (RRC) messages indicating:
• a handover from a first cell to a second cell;
• and
• a synchronization signal block (SSB), of the second cell, for receiving a downlink control information (DCI) from the second cell;
• receive, from the second cell and based on a demodulation reference signal (DMRS) antenna port being quasi co-located with the SSB, the DCI scheduling an uplink transmission, wherein the uplink transmission is an initial uplink transmission, to the second cell, after receiving the one or more RRC messages indicating the handover;
• and
• transmit, to the second cell and based on the SSB indicated by the one or more RRC messages, the uplink transmission.