CPC H04W 76/19 (2018.02) [H04L 1/08 (2013.01)] | 13 Claims |
1. A method performed by a central unit (CU) of a base station comprising the CU and one or more distributed units (DU), for synchronizing radio link control re-establishment between a user equipment (UE) and a DU, the method comprising:
obtaining, in a control plane (CP) data processing apparatus of the CU, an indication that an uplink and/or downlink outage has occurred between the DU and the UE;
sending a request from the CP data processing apparatus to a user plane (UP) data processing apparatus of the CU, to instruct the UP data processing apparatus to retransmit, via the DU, any data protocol units previously transmitted to the UE which were unacknowledged by the UE; and,
responsive to the request, retransmitting, by the UP data processing apparatus and via the DU, any data protocol units previously transmitted to the UE which were unacknowledged by the UE.
|