Wireless communication devices are adapted to facilitate information sequences included in frozen sub-channels of polar coded transmissions. According to one example, an apparatus can generate a masksequence based on a plurality of parameters, including at least one of a transmitting-device-specific sequence or a receiving-device-specific sequence. In some examples, the frozen bits may be maskedwith the mask sequence, and an information block may be encoded utilizing polar coding. In other examples, the mask sequence may be compared to the frozen bits of a received information block, and thereceived information block may be determined as intended for the apparatus when the mask sequence matches to the frozen bits. Other aspects, embodiments, and features are also included.