Spread spectrum slot reservation multiple access

A new method of data transmission is proposed for mobile communications. It is similar to the traditional split channel reservation multiple access (SRMA): a mobile user (MU) reserves transmission slots from a base station (BS) and then transmits according to the BS scheduling. However, in the proposed method a number of MUs can transmit concurrently using the direct sequence spread spectrum (DS-SS) technique. The DS-SS technique is also used at the reservation stage where a multiple-slotted-ALOHA (m-S-ALOHA) technique allows multiple users to simultaneously reserve service. Theoretical and simulation results show significant increases in throughput efficiency for the proposed method compared with the traditional SRMA technique