In this paper, we analyse human gait patterns, including knee and hip joint torques and muscle activities, during step initiation phase and continuous walking phase. Additionally, we present a lower limb exoskeleton called the Unmanned Technology Research Centre Exoskeleton (UTRCEXO) implementing a precedence walking assistance mechanism based on the gait characteristics. The operator equipped with the Unmanned Technology Research Centre Exoskeleton (UTRCEXO) walks with a 15 kg load at 3.3 km/h step velocity.