Abstract: Recently, industrial wireless networks have been increasingly adopted in automated guided vehicle (AGV) applications. Current AGV communications primarily depend on Wi-Fi technology that employs contention-based access methods and thus cannot meet the requirement of ordered and reliable wireless transmission in harsh industrial environments. To this end, we investigate an ordered and reliable retransmission method for wireless AGV systems based on WIA-FA. First, the communication system architecture and data transmission process of WIA-FA-based AGV systems are presented. A new superframe structure is designed to guarantee strictly ordered transmission.Then, on the basis of the new superframe, a sequential scheduling-based end-to-end retransmission (SSER) strategy is proposed. SSER realizes on-demand transmission for uplink data and sequential transmission for downlink data and supports the dynamic optimization of durations for uplink and downlink data phases. Simulation results show that SSER outperforms existing works in terms of transmission reliability under different network parameter settings, such as superframe length, number of nodes, and channel conditions.