For the larger internet delay and higher data packet loss rate of telephone lines, we researched and designed communication protocol for the VSAT satellite station remote monitoring system. We designed 5 categories data frames 46 strips by referencing connection o-riented service serial interface communication protocol system structure and adopting classification first and definition after method. Referencing 802.3 protocol, we designed error retransmission to guarantee the reliability for data frame transmission, by using the data buffer and o-vertime setting. According to the VSAT station parameters actual reading and writing operation, we designed the data frames workflow, make sure the ultimate realization of the system communication protocol design. The test results show that the system communication protocol we designed can ensure system data safe, reliable and correct transmission.%针对电话线路网络延时较大和数据丢包率较高的情况,对VSAT卫星小站远程监控系统通信协议进行了设计研究；借鉴面向连接服务串口通信协议体系结构,采用先分类后定义的方法,设计了5类共46条数据帧；参照802.3协议,利用数据缓冲和超时设置对数据帧可靠性传输进行了出错重传设计；根据VSAT小站参数实际读写操作方式,对数据帧的工作流程进行设计,确保系统通信协议设计的最终实现；测试结果表明:设计的通信协议能够保障系统数据安全可靠正确地传输.
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