US patent US12750319
Management of protocol data unit set discarding due to network congestion
Abstract
Discarding of PDU sets associated with DRBs of a RAN can be managed. A discard manager component (DMC) can determine whether a congestion condition exists with regard to a DRB(s) associated with a DU or CU-UP based on congestion information associated with DRB(s). If congestion is in DRB(s) associated with DU, DU can communicate a congestion indicator to DMC of the CU-UP. In response to detecting a congestion condition associated with DRB(s), DMC can determine a PDU set, present in buffer of CU-UP and associated with congested DRB(s), that has highest PSI value, set highest PSI value as threshold PSI value for discarding, and discard, from buffer, data packet(s) of PDU set(s), associated with congested DRB(s), that satisfies threshold PSI value. If congestion is still not resolved, DMC can adjust threshold PSI value, and discard data packet(s) of PDU set(s) that satisfies adjusted threshold PSI value.