Radio resource management present a major research field in new mobile and wirless networks 5G. The opportunistic scheduling algorithms deployed by mobile telecommunications operators allowing them to guarantee efficient radio resources management. In this context, we propose a new opportunistic scheduling algorithm allowing at the same time to ensure a perfect equity between the users, to guarantee a good QoS and to maximize the overall throughput of the system. We evaluate our proposal, which in turn will be compared to reference algorithms known for their efficiency and robustness in terms of scheduling, namely: RR, MaxSNR and PF. We analyze the impact of diffrent group of users based frainess criterion and system throughput and we compare ou new opportunistic scheduler algorithm wich gives the better results than the optimal algorithm proposed in the literature.