Flushing PDCP Packets To Reduce Network Load In Multi-Connectivity Scenarios

摘要

An anchor node receives a packet, duplicates the packet to form two copies, flags each of two data units, each comprising one of the copies, with a duplication flag indicating the corresponding data unit comprises a copy. The anchor node sends one of the two data units through protocol layers towards transmission to a UE, and sends another of the two data units over a network interface and towards one or more duplicating nodes. A duplicating node receives in the data unit a copy of the packet. The duplicating node forwards the data unit with the packet to a first of multiple protocol layers toward transmission via an air interface toward the UE. The duplicating node discards, in the first protocol layer or in a layer lower than the first, the packet in response to receiving an ACK that a copy of the packet was successfully received by the UE.