A method of transmitting data blocks between a user equipment and a station using parallel hybrid automatic repeat request processes. The station includes a scheduler that signals to the user equipment allocations of resources and parameters for transmission and re-transmission of the data blocks, and a set of reception buffers that receive and re-order the data blocks. The scheduler assigns a reception index to the corresponding scheduled reception and assigns reception buffers to received data blocks as a function of the assigned reception indexes identifying time slots scheduled for reception. A newly transmitted data block received in its scheduled time slot is assigned to the reception buffer corresponding to a new reception index. A re-transmitted data block received in a time slot later than its originally scheduled time slot is assigned to the reception buffer corresponding to a same reception index as its originally scheduled reception.