A remote unit comprising: a transceiver arranged to communicate with a mobile communication network; and a processor arranged to: establish a radio bearer to communicate with a mobile communication network, the radio bearer comprising a Packet Data Convergence Protocol "PDCP" protocol entity, a first Radio Link Control "RLC" protocol entity and a second RLC protocol entity being associated with said PDCP protocol entity, a first logical channel being associated with said first RLC protocol entity, and a second logical channel being associated with said second RLC protocol entity; receive a first control signal from the mobile communication network; duplicate PDCP data protocol data units "PDUs" in the PDCP protocol entity and submit the duplicated PDCP data PDUs to the first RLC protocol entity and the second RLC protocol entity for transmission, in response to the first control signal, wherein the PDCP entity is arranged to receive, from one of the first RLC protocol entity and the second RLC protocol entity, a confirmation of successful delivery of one or more PDCP data PDUs, based on a RLC status report received from the mobile communication network, and wherein the PDCP entity is arranged to indicate to the other one of the first RLC protocol entity and the second RLC protocol entity to discard one or more duplicated PDCP data PDUs corresponding to the successfully delivered one or more PDCP data PDUs. a transceiver arranged to communicate with a mobile communication network; and a processor arranged to: establish a radio bearer to communicate with a mobile communication network, the radio bearer comprising a Packet Data Convergence Protocol "PDCP" protocol entity, a first Radio Link Control "RLC" protocol entity and a second RLC protocol entity being associated with said PDCP protocol entity, a first logical channel being associated with said first RLC protocol entity, and a second logical channel being associated with said second RLC protocol entity; receive a first control signal from the mobile communication network; duplicate PDCP data protocol data units "PDUs" in the PDCP protocol entity and submit the duplicated PDCP data PDUs to the first RLC protocol entity and the second RLC protocol entity for transmission, in response to the first control signal, wherein the PDCP entity is arranged to receive, from one of the first RLC protocol entity and the second RLC protocol entity, a confirmation of successful delivery of one or more PDCP data PDUs, based on a RLC status report received from the mobile communication network, and wherein the PDCP entity is arranged to indicate to the other one of the first RLC protocol entity and the second RLC protocol entity to discard one or more duplicated PDCP data PDUs corresponding to the successfully delivered one or more PDCP data PDUs. establish a radio bearer to communicate with a mobile communication network, the radio bearer comprising a Packet Data Convergence Protocol "PDCP" protocol entity, a first Radio Link Control "RLC" protocol entity and a second RLC protocol entity being associated with said PDCP protocol entity, a first logical channel being associated with said first RLC protocol entity, and a second logical channel being associated with said second RLC protocol entity; receive a first control signal from the mobile communication network; duplicate PDCP data protocol data units "PDUs" in the PDCP protocol entity and submit the duplicated PDCP data PDUs to the first RLC protocol entity and the second RLC protocol entity for transmission, in response to the first control signal, wherein the PDCP entity is arranged to receive, from one of the first RLC protocol entity and the second RLC protocol entity, a confirmation of successful delivery of one or more PDCP data PDUs, based on a RLC status report received from the mobile communication network, and wherein the PDCP entity is arranged to indicate to the other one of the first RLC protocol entity and the second RLC protocol entity to discard one or more duplicated PDCP data PDUs corresponding to the successfully delivered one or more PDCP data PDUs.