A method of executing inter-eNodeB, eNB, coordinated multi point, CoMP, joint transmission ,JT, between a CoMP user equipment ,UE, and two or more CoMP eNBs, the method comprising: constructing, by a first CoMP eNB of the two or more CoMP eNBs, a first set of downlink control information, DCI, comprising information on mapping relation between a first transport block ,TB, which is transmitted by the first CoMP eNB, and a first codeword related to scrambling of the first TB, wherein the first set of DCI is independently constructed by the first CoMP eNB; transmitting, by the first CoMP eNB, the first set of DCI to the CoMP UE, wherein the first set of DCI comprises independent downlink, DL, assignments allowing the first CoMPeNB to perform independent scheduling of a physical downlink shared channel, PDSCH, associated with the first CoMP eNB; constructing, by a second CoMP eNB of the two or more CoMP eNBs, a second set of DCI, comprising information on mapping relation between a second TB, which is transmitted by the second CoMP eNB, and a second codeword related to scrambling of the second TB, wherein the second set of DCI is independently constructed by the second CoMP eNB; and transmitting, by the second CoMPeNB, the second set of DCI to the UE, wherein the second set of DCI comprises independent DL assignments allowing the second CoMP eNB to perform independent scheduling of a PDSCH associated with the second CoMP eNB, wherein an index of the first codeword and an index of the second codeword are used to initiate a scrambling sequence being used for scrambling bits of the first TB and a scrambling sequence being used for scrambling bits of the second TB, respectively. constructing, by a first CoMP eNB of the two or more CoMP eNBs, a first set of downlink control information, DCI, comprising information on mapping relation between a first transport block ,TB, which is transmitted by the first CoMP eNB, and a first codeword related to scrambling of the first TB, wherein the first set of DCI is independently constructed by the first CoMP eNB; transmitting, by the first CoMP eNB, the first set of DCI to the CoMP UE, wherein the first set of DCI comprises independent downlink, DL, assignments allowing the first CoMPeNB to perform independent scheduling of a physical downlink shared channel, PDSCH, associated with the first CoMP eNB; constructing, by a second CoMP eNB of the two or more CoMP eNBs, a second set of DCI, comprising information on mapping relation between a second TB, which is transmitted by the second CoMP eNB, and a second codeword related to scrambling of the second TB, wherein the second set of DCI is independently constructed by the second CoMP eNB; and transmitting, by the second CoMPeNB, the second set of DCI to the UE, wherein the second set of DCI comprises independent DL assignments allowing the second CoMP eNB to perform independent scheduling of a PDSCH associated with the second CoMP eNB, wherein an index of the first codeword and an index of the second codeword are used to initiate a scrambling sequence being used for scrambling bits of the first TB and a scrambling sequence being used for scrambling bits of the second TB, respectively. <EOS>