US Patent 10574564 Duplicating PDCP PDUS for a radio bearer

For duplicating PDCP PDUs for a radio bearer, methods, apparatus, and systems are disclosed. One apparatus includes a processor and a transceiver for communicating with a mobile communication network. The processor establishes a radio bearer to communicate with the network, the radio bearer includes a PDCP entity, first and second RLC entities associated with said PDCP entity, first and second logical channels associated with said first and second RLC entities, respectively. The processor receives a control signal from the network, duplicates PDCP data PDUs in the PDCP entity, and submits them to the first and second RLC entities for transmission. The processor indicates to one of the first and second RLC entities to discard duplicated PDCP data PDUs in response to the successful delivery of corresponding PDCP data PDUs by the other RLC entity.