毫米波回程网络中的路由与QoS调度算法

Routing and QoS Scheduling Algorithm in Millimeter Wave Backhaul Networks

毫米波通信拥有较大带宽,能实现千兆的传输速率,将成为5G移动通信回程的主要方式。研究超密集网络毫米波无线回程,以最大化网络吞吐量与满足QoS要求的链路数为目标,优化回程网络中的路由选择和链路调度。对该优化问题进行数学建模,用线性规划方式求得传输路径。在此基础上,提出一种基于最大QoS传输集的调度算法。仿真结果表明,相比TDMA、STDMA算法,该算法的系统吞吐量与成功调度链路数均较高。

Millimeter wave communication has a large bandwidth and can achieve Gigabit transmission rate,which will become the main way of 5G mobile communication backhaul.Millimeter wave wireless backhaul in Ultra-Dense Networks(UDN) is studied to optimize routing and link scheduling in backhaul networks with the goal of maximizing network throughput and the number of links satisfying QoS requirements.The optimization problem is modeled mathematically and the transmission path is obtained by linear programming.On this basis,a scheduling algorithm based on Maximum QoS Transmission Set(MQTS) is proposed.Simulation results show that compared with the TDMA and STDMA algorithm,the throughput and the number of successful scheduling links of the proposed algorithm are higher.