A method in a radio network node (130, 130A, 130B), the method comprising: obtaining a pseudo-random sequence initialization value C init as follows: c init = n RNTI ⋅ 2 15 + q ⋅ 2 14 + n ID, where -- n ID ∈ {0,1,...,1023) equals a higher-layer parameter Data-scrambling-Identity if configured and if the radio network temporary identifier, RNTI, equals a cell-RNTI, C-RNTI, or another User Equipment, UE, -specific RNTI, -- n ID = N ID cell otherwise; obtaining a pseudo-random sequence c (q) (i) based on the pseudo-random sequence initialization value c init in that a scrambling sequence generator is initialized with the pseudo-random sequence initialization value c init; scrambling a downlink message with the obtained pseudo-random sequence c (q) (i) as follows: - up to two codewords are transmittable, q ∈ {0,1}, wherein in case of single-codeword transmission, q = 0, and - for each codeword q, a User Equipment, UE, is enabled to assume block of bits b q 0,..., b q M bit q − 1, where M bit q is the number of bits in codeword q transmitted on a physical channel, are scrambled prior to modulation, resulting in a block of scrambled bits b ̃ q 0,..., b ̃ q M bit q − 1 according to b ̃ q i = b q i + c q i mod 2; and transmitting the scrambled downlink message to a wireless device (110, 110A, 110B). obtaining a pseudo-random sequence initialization value C init as follows: c init = n RNTI ⋅ 2 15 + q ⋅ 2 14 + n ID, where -- n ID ∈ {0,1,...,1023) equals a higher-layer parameter Data-scrambling-Identity if configured and if the radio network temporary identifier, RNTI, equals a cell-RNTI, C-RNTI, or another User Equipment, UE, -specific RNTI, -- n ID = N ID cell otherwise; -- n ID ∈ {0,1,...,1023) equals a higher-layer parameter Data-scrambling-Identity if configured and if the radio network temporary identifier, RNTI, equals a cell-RNTI, C-RNTI, or another User Equipment, UE, -specific RNTI, -- n ID = N ID cell otherwise; obtaining a pseudo-random sequence c (q) (i) based on the pseudo-random sequence initialization value c init in that a scrambling sequence generator is initialized with the pseudo-random sequence initialization value c init; scrambling a downlink message with the obtained pseudo-random sequence c (q) (i) as follows: - up to two codewords are transmittable, q ∈ {0,1}, wherein in case of single-codeword transmission, q = 0, and - for each codeword q, a User Equipment, UE, is enabled to assume block of bits b q 0,..., b q M bit q − 1, where M bit q is the number of bits in codeword q transmitted on a physical channel, are scrambled prior to modulation, resulting in a block of scrambled bits b ̃ q 0,..., b ̃ q M bit q − 1 according to b ̃ q i = b q i + c q i mod 2; and - up to two codewords are transmittable, q ∈ {0,1}, wherein in case of single-codeword transmission, q = 0, and - for each codeword q, a User Equipment, UE, is enabled to assume block of bits b q 0,..., b q M bit q − 1, where M bit q is the number of bits in codeword q transmitted on a physical channel, are scrambled prior to modulation, resulting in a block of scrambled bits b ̃ q 0,..., b ̃ q M bit q − 1 according to b ̃ q i = b q i + c q i mod 2; and transmitting the scrambled downlink message to a wireless device (110, 110A, 110B).