针对室内可见光通信网络技术在地铁车厢等特殊场景下的应用问题进行了研究。基于光attocell网络概念，构建了一种适用于地铁车厢的小单元覆盖矩形网络结构模型，并充分考虑了用户受相邻单元光接入节点(AP)干扰的情况。为了提高单元边缘区域频谱效率，将直接部分频率复用和软频率复用方案应用到模型中。推导了网络的信干噪比累积分布函数及单元频谱效率闭式表达式，通过频谱效率对比分析评估了不同复用方案的网络性能。结果表明，边缘区域频率复用因子为2的方案性能最佳，能够有效地缓解边缘区域用户受临近单元AP干扰的程度，提高边缘区域频谱效率。因此，在地铁车厢原有的照明设备下，采用直接部分频率复用(复用因子为2)的矩形网络结构可作为构建地铁可见光通信网络的推荐方案。

The application of indoor Visible Light Communication (VLC) network technology in special subway scene is studied. Based on the concept of optical attocell network, a small-cell-covered rectangular network model applied in the subway carriage is constructed, where the user's interference from adjacent optical Access Point (AP) is fully considered. Strict Fractional Frequency Reuse (sFFR) and Soft Frequency Reuse (SFR) are considered to improve the cell edge spectral efficiency. Furthermore, analytical expressions for Signal-to-Interference-plus-Noise Ratio (SINR) statistics and cell spectral efficiency in the network are derived. Performance of the system is evaluated by comparing spectral efficiency. The results show that the performance of scheme with the reuse factor of 2 is better than other schemes, which can effectively mitigate interference for edge users and improve the edge spectral efficiency. Therefore, based on the original lighting equipment of subway, the Rectangle network and scheme with the reuse factor of 2 should be given priority to construct the VLC network.