The invention provides a centrifugal juicer with a removable bin for collection of unwanted pulp generated by the juicing process. A transmitting method includes when an encoding packet is bigger than a maximum encoding packet size Nep_max, generating a first codeword by encoding the encoding packet at a mother code rate t; generating a second codeword by selecting Nep_maxt-sized code bits from the first codeword; and performing Hybrid Automatic Repeat reQuest using the second codeword. The system and method determine a redirecting number from which the incoming call was forwarded. The apparatus includes a matching module which compares transaction models in which processes in units of transactions on the system have been modeled on the basis of call relationships among the processes on the system, with the extracted call relationship, and selects and determines a transaction model identical to the call relationship. , R5 represents an alkyl group having 1 to 12 carbon atom which may be straight chain, branched or cyclic, etc. The controller is configured to perform garbage collection of the second memory device, to load data stored in one of the first memory device and the second memory device into another of the first memory device and the second memory device, to access the first memory device if the transceiver produces the interrupt signal.