中文摘要：

井下移动无线网络是应用于无人机车驾驶系统的通信网络，提高其接入吞吐量是亟待解决的问题。针对井下多机车场景，文章提出了一种能使系统吞吐量最大化的接入控制策略。首先建立多轨旁接入点（ac-eess point，AP）多轨直道环境下的机车接人数学模型，然后通过理论推导得到系统吞吐量效用函数，提出基于此效用函数的机车接入控制策略，利用效用函数和机车接入控制策略保证了数据的多包接收以及吞吐量的最优化。仿真结果显示所提出的接入策略优化效果与传统策略相比有较大提高，其吞吐量提高50％以上。

英文摘要：

Underground mobile wireless networks is applied to communication network of locomotive unmanned system. To improve the throughput is an urgent issue to be resolved. To deal with the sit- uation of underground multi-locomotive and to maximize the system throughput, the access control strategy was proposed. Firstly, a mathematical model for locomotive＇s access was constructed with multiple access point（AP）, multi-track and straight roadway. Secondly, on the basis of the theoretical derivation, the throughput utility function was obtained, and the access control strategy was designed based on the utility function. Finally, the utility function and locomotive access control strategy were used to ensure multi-packet reception of data and throughput optimization. The simulation results showed that the optimal result of access control strategy increased at least 50% than that of traditional strategy.