本文的主要目的是探索数据链路层中，选择重传协议的优化改进措施，主要方法是通过对量子通信的分析和研究，通过进行协议的模拟实验、优化协议仿真环境、引入缓存等措施，进过实验分析发现，与传统的选择重传协议相比，改进后的数据链路层的信道传输速率提高了15%，数据传输错误率降低了10%，由此可以得出以下结论：通过上述方法，可以有效避免数据错误以及重发的风险，提高信道的通信利用率，改善了数据链路层的通信方式。%The main purpose of this article is to explore the data link layer, select the retransmission protocol optimization improvement measures, the main method is based on the analysis and research of quantum communication, through agreement of simulation, optimization of the simulation environment, the introduction of caching, through experimental analysis, found that compared with the traditional choice retransmission protocol, data link layer can improve the channel transmission rate increased by 10%, the data transmission error rate was reduced by 15%, thus can draw the following conclusions:through the above method, can effectively avoid the risk of data errors and retransmission, improve the utilization rate of channel of communication to improve the communication data link layer.
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