A centralized unit for a base station of a communication network, comprising: means for communicating at least one data burst comprising at least one packet data convergence protocol protocol data unit, PDCP PDU, towards a distributed unit of the base station, wherein the communicating comprises: determining a buffer status of a buffer of the centralized unit for communicating the at least one PDCP PDU with the distributed unit; setting, based on the determining, at least one value of at least one timer for each PDCP PDU of the at least one data burst, wherein said at least one timer is at least one PDCP PDU transmission timer identifying at least one given time a buffer of the distributed unit is reserved for each PDCP PDU of said at least one data burst, wherein the at least one value of said at least one timer is determined according to: T PDCP PDU i DU = PDCP PDU Volume i DU scheduling throughput, wherein T PDCP PDU iDU is a value of a timer associated with an i-th PDCP PDU frame sent from a user plane part of the centralized unit to the distributed unit, PDCP PDU Volume i is a volume of the i-th PDCP PDU frame, and DU scheduling throughput is a scheduling throughput within the distributed unit measured as PDCP PDU volume sent from the user plane part of the centralized unit divided by a time interval between sending of a first part of the PDCP PDU from the user plane part of the centralized unit to the distributed unit and sending of a last part of the PDCP PDU via an air interface of the distributed unit; and communicating, based on at least said at least one given time, the at least one data burst with the distributed unit. determining a buffer status of a buffer of the centralized unit for communicating the at least one PDCP PDU with the distributed unit; setting, based on the determining, at least one value of at least one timer for each PDCP PDU of the at least one data burst, wherein said at least one timer is at least one PDCP PDU transmission timer identifying at least one given time a buffer of the distributed unit is reserved for each PDCP PDU of said at least one data burst, wherein the at least one value of said at least one timer is determined according to: T PDCP PDU i DU = PDCP PDU Volume i DU scheduling throughput, wherein T PDCP PDU iDU is a value of a timer associated with an i-th PDCP PDU frame sent from a user plane part of the centralized unit to the distributed unit, PDCP PDU Volume i is a volume of the i-th PDCP PDU frame, and DU scheduling throughput is a scheduling throughput within the distributed unit measured as PDCP PDU volume sent from the user plane part of the centralized unit divided by a time interval between sending of a first part of the PDCP PDU from the user plane part of the centralized unit to the distributed unit and sending of a last part of the PDCP PDU via an air interface of the distributed unit; and communicating, based on at least said at least one given time, the at least one data burst with the distributed unit. T PDCP PDU iDU is a value of a timer associated with an i-th PDCP PDU frame sent from a user plane part of the centralized unit to the distributed unit, PDCP PDU Volume i is a volume of the i-th PDCP PDU frame, and DU scheduling throughput is a scheduling throughput within the distributed unit measured as PDCP PDU volume sent from the user plane part of the centralized unit divided by a time interval between sending of a first part of the PDCP PDU from the user plane part of the centralized unit to the distributed unit and sending of a last part of the PDCP PDU via an air interface of the distributed unit; and communicating, based on at least said at least one given time, the at least one data burst with the distributed unit.