Figure12.3 Frames in a pure ALOHA network纯ALOHA的帧 Station 1 Frame 1.1 Frame 1.2 Time Station 2 Frame 2.1 Frame 2.2 Time Station 3 Frame 3.1 Frame 3.2 Time Station 4 Frame 4.1 Frame 4.2 Time Collision Collision duration duration 12.512.5 Figure 12.3 Frames in a pure ALOHA network 纯ALOHA的帧