Data link protocol back-off algorithm based on channel state judgment and priority

The invention discloses a data link protocol back-off algorithm based on channel state judgment and priority. In the algorithm, the method comprises the steps of: calculating a channel load value by counting the number of data link pulse signals in a channel; setting a channel load threshold, and comparing the channel load value with the channel load threshold; and if the data link protocol is smaller than the channel load threshold, adopting a binary-based back-off algorithm for the data link protocol when data collision occurs, otherwise, adopting a priority-based back-off algorithm if the data link protocol is greater than or equal to the channel load threshold. According to the technical scheme disclosed by the invention, the data link network performance during channel congestion is improved, and the real-time performance of high-priority data link information sending is ensured. 本发明公开了一种基于信道状态判决及优先级的数据链协议退避算法。在该算法中，通过统计信道中数据链脉冲信号的数量来计算信道负载值；设置信道负载阈值，将所述信道负载值与所述信道负载阈值相比较；若小于所述信道负载阈值，则发生数据碰撞时数据链协议采用基于二进制的