Signal transmission scheme for efficient management of common e-dch

PURPOSE: A signal transmission scheme for efficient management of common E-DCH is provided to prevent the transmission of scheduling information and allocation of unnecessary resources by prohibiting a new scheduling information from being generated. CONSTITUTION: When transmission of the MAC PDU(Medium Access Control Protocol Data Unit) including the scheduling information is failed(S601), It is considered that TEBS is 0 based on by examining the TEBS(Total E-DCH Buffer Status) field of the failed scheduling information(S602). A terminal judges corresponding scheduling information and the transmission of data to the MAC PDU(S603). The scheduling information and data corresponding to the HARQ transmission fail are together transmitted According to the decision result. The terminal triggers new scheduling information(S604).