General influences of flux control and error control on communication performance are studied in this paper. Stop and Wait protocol and continuous ARQ protocol are mainly analyzed, and the relation between channel occupancy and frame size is discussed.

• 研究了流量控制和差错控制对通信性能的综合影响 ,着重分析了停止 -等待协议和连续 ARQ协议的优缺点 ,讨论了信道利用率和帧长的关系。