||The growing demand of real-time services, such as Video streaming, VoIP , with high constraints on delays and bandwidth brings new challenges in the design of wireless communication system. So how to use radio resource efficiently becomes an important point for the LTE system.|
In our paper, we proposed a new LTE downlink packet scheduler, which chooses packet delay to prioritize user, and uses Packet Prediction Mechanism to solve the burst transmission situation. We also used the Channel Quality Indicator that users send feedback to the eNodeB to classify user mobility, and then in every transmission time interval, we utilized different resource allocation schemes for the high mobility users.
The simulations are conducted by LTE-Sim R5 to analyze the performance of proposed method. And the simulation results show that the proposed method outperforms other packet scheduling schemes, no matter in Goodput, Packet Delay, or Packet loss rate. It shows that the proposed method can improve the spectrum efficiency and satisfy the QoS requirements of real-time traffic.