Figure 6.
Scheme to determine channel gating mode based on the durations of adjacent channel bursts and burst-terminating gaps. The gating mode of the channel is assigned as indicated in a graph of channel burst duration t b vs. duration of the adjacent burst-terminating gap t g as shown. When a channel gap with t g > T g occurred next to a channel burst with t b > T b (area with yellow and green hatching), the channel is considered to undergo a modal transition from L to H mode (if the channel gap preceded the burst) or from H to L mode (if the burst preceded the gap).
