基于SEAMCAT的LTE数据分组调度仿真

Simulation of Data Packet Scheduling in LTE System Based on SEAMCAT

为加强通信网络的运维能力,在LTE中采用系统仿真是一种重要的手段。本仿真器由SEAMCAT改造的链路级仿真和Matlab开发的系统级仿真两部分组成,能充分仿真无线信道的时变特性和应用业务的统计特性。验证了其有效性,并研究了根据不同业务的特征进行差异化的业务传输对提升客户感知和网络容量的作用。结果表明最优化的QoS参数设置与各类业务的特点及其业务量配比有关:高优先级业务占比较低时,通过优化可以提升网络容量1倍以上;而高优先级业务占比较高时,优化效果将不显著。

In order to strengthen the communication network operation and maintenance capabilities, deploying simulation is an important method. A complete simulator has been built which is comprised of link level component extended from SEAMCAT and system level component coded with Matlab, which can fully simulate the time-varying characteristics of wireless channels and the statistical characteristics of application services. The tool was validated and was used to research the price that differential transmission according to different service features brought to the network. The simulation results show that the optimal values of QoS parameters are affected by traffic mix： when the high priority traffic load is low, the network capacity can be double through optimization; but when the high priority traffic load is high, the effects are not significant.