Gateway for a communication system , the gateway comprising : a transceiver configured to receive a sequence of data packets (S1) on a Radio Access Bearer, RAB, from a core network , receive at least one flow control message associated with the RAB; and a processor configured to obtain a first distribution (D1) of the received sequence of data packets (S1) into a first sub-sequence of data packets (S11) and at least a second sub-sequence of data packets (S12), obtain the first distribution (D1) by determining the first distribution (D1) based on at least the received at least one flow control message , wherein a first flow control message is received from a master access node and comprises a second distribution (D2) of the first sub-sequence of data packets (S11) into a third sub-sequence of data packets (S13) and at least a fourth sub-sequence of data packets (S14), and further indicating that the fourth sub-sequence is addressed for a secondary access node ; wherein the transceiver is configured to forward the first sub-sequence of data packets (S11) on the RAB to the master access node , forward the second sub-sequence of data packets (S12) on the RAB to the secondary access node . a transceiver configured to receive a sequence of data packets (S1) on a Radio Access Bearer, RAB, from a core network , receive at least one flow control message associated with the RAB; and receive a sequence of data packets (S1) on a Radio Access Bearer, RAB, from a core network , receive at least one flow control message associated with the RAB; and a processor configured to obtain a first distribution (D1) of the received sequence of data packets (S1) into a first sub-sequence of data packets (S11) and at least a second sub-sequence of data packets (S12), obtain the first distribution (D1) by determining the first distribution (D1) based on at least the received at least one flow control message , wherein a first flow control message is received from a master access node and comprises a second distribution (D2) of the first sub-sequence of data packets (S11) into a third sub-sequence of data packets (S13) and at least a fourth sub-sequence of data packets (S14), and further indicating that the fourth sub-sequence is addressed for a secondary access node ; obtain a first distribution (D1) of the received sequence of data packets (S1) into a first sub-sequence of data packets (S11) and at least a second sub-sequence of data packets (S12), obtain the first distribution (D1) by determining the first distribution (D1) based on at least the received at least one flow control message , wherein a first flow control message is received from a master access node and comprises a second distribution (D2) of the first sub-sequence of data packets (S11) into a third sub-sequence of data packets (S13) and at least a fourth sub-sequence of data packets (S14), and further indicating that the fourth sub-sequence is addressed for a secondary access node ; wherein the transceiver is configured to forward the first sub-sequence of data packets (S11) on the RAB to the master access node , forward the second sub-sequence of data packets (S12) on the RAB to the secondary access node . forward the first sub-sequence of data packets (S11) on the RAB to the master access node , forward the second sub-sequence of data packets (S12) on the RAB to the secondary access node . <EOS>