为了提高频谱利用率及减少传播过程的能量衰减，建立高效的信号传播模型来预测传播路径和接收处信号强度有着重要意义。针对微蜂窝环境，提出入射及反弹射线法建立二维射线追踪模型，并基于此分析该环境下不同发射-接收机组合的信号传播特性。结果表明：不同组合的距离和微蜂窝环境共同影响信号传播路径数量。距离接近并且拥有较好的反射环境的组合的传播路径数量更多，信号损失更少。研究成果能够为微蜂窝环境下的网络规划建设提供指导。

To improve the spectrum efficiency and reduce the energy attenuation in the propagation process, it is important to establish an efficient signal propagation model to predict the propagation path and the signal strength at the receiver. Aim at the microcellular environment, a two-dimensional ray tracing model based on the incident and rebound ray methods was established, with the signal propagation characteristics of different combinations of emitters and receivers were analyzed by the model in this environment. The results show that distances of different combinations and microcellular environment jointly affect the number of propagation paths of the signal. More propagation paths and less signal loss are achieved in the condition of a close-distance combined position with better reflection environment. The research results can guide network planning and construction in the microcellular environment.