The invention relates to a design scheme for a redundancy version in a communication system, and discloses an information processing method and device, a communication device and the communication equipment. The communication equipment determines the redundancy version sequence used to represent the sending sequence of multiple redundancy versions; the transmission frequency is determined; and theredundancy version is obtained from the caching sequence and sent on the basis of the redundancy version sequence and transmission frequency. The redundancy version sequence is determined before datatransmission, the communication efficiency is improved, and the HARQ performance is improved.