本文描述了在 MSAT—X 系统中使用的管道协议。这个按需分配的多址访问协议采用 S—ALOHA 来进行预约请求信道,其重发策略为选择重发,整个系统由一个网控中心进行集中控制和管理。在此协议支持下,分析了一个完整数据块的平均端—端延迟。此分析也适用于话音和数据业务综合的场合。 This article describes the pipe protocol used in MSAT-X systems. This on-demand assignment multiple access protocol uses S-ALOHA to make a reservation request channel. The retransmission strategy is selective retransmission, and the entire system is centrally controlled and managed by a network control center. With this protocol supported, the average end-to-end delay of a complete block is analyzed. This analysis also applies to the voice and data services integrated occasions.