Methods for multiplexing uplink signal with scheduling request signal in mobile communication system

A multiplexing method of an upward link signal and a scheduling request signal in a mobile communications system for efficiently multiplexing signal is provided to transmit signal by hopping codes crossing each other. GBSC is defined as a combination having BSCs which are generated by BSC(Block-Spreading Code) having length 4(S201a). GBSC is split in two subsets having the element of 2(S202a). The number of UE(User Equipment) using the same Zadoff-Chu codes are determined(S203a). It determines if a scheduling request is transmitted(S205a). If the scheduling request is transmitted, GBSCj(1) is assigned to UE2n+j in the slot 1. GBSCj(2) is assigned to UE2n+j in the slot 2(S206a).