Abstract: Aiming at the domestic departure passengers checking-in scenario with the serpentine queuing form in the fully open check-in island, passenger agglomeration rule is analyzed, proving the multiple peaks of arriving passengers on multiple flights. Then, for this scene, before the number of open counters changed, the queuing length prediction model of departure passengers in fully open check-in island is established by cumulative algorithm and discretized analysis. Queuing length of adjacent timing is analyzed in discrete way. Accuracy of the current model is proved by comparative test.

Key words: queuing length model, check-in, discretization analysis, prediction model