Cross-Layer Dual Domain Scheduler for 3GPP-Long Term Evolution

The bandwidths of wireless communication technologies have grown fast in recent years. Thus, more users access wireless networks and experience various network services in their daily life. As plenty users and various services coexist in networks, many strategies will deeply affect system performances. Scheduling is absolutely one of these important strategies. A good scheduling strategy can significantly improve network system performances in terms of throughput, delay time and so on. From users’ point of view, an elaborate scheduling strategy can also greatly enhance the quality of network services so that users can enjoy better network services. At the critical moment that wireless technologies will stride toward nextgeneration, to design good scheduling schemes for LTE is necessary and urgent. Therefore, in this paper, aiming at LTE, we propose an efficient scheduling scheme to improve the performance of LTE. We take into account the real-time multimedia transmission, which has stricter QoS requirements to design our scheduling schemes. Overall system throughput and fairness are also considered in this paper. The scheduler will be devised according to the characteristics of downlink/uplink transmissions in LTE. The goals of the proposed scheduling scheme are (1) avoiding service disruptions (2) keeping fairness (3) improving system throughput (4) reducing delay time.