无线通信中,经常会遇到上行数据和下行数据帧格式完全不同的情况,下面以地面系统为例说明这种情况。如图1所示,下行数据主要是对温度、压力、湿度等信息的测量数据,实际应用中通常是经过组帧处理后的结果,因此帧格式确定,但有固定的帧头信息,帧间间隔时间相对固定;上行数据一般 In wireless communication, the situation that the uplink data and the downlink data frame format are completely different often occurs. In the following, the ground system is taken as an example to illustrate this situation. As shown in Fig. 1, the downlink data is mainly the measurement data of temperature, pressure, humidity and other information. In practical applications, the data is usually framed and the frame format is determined. However, there is fixed frame header information, Interval time is relatively fixed; uplink data in general