Radio Notification with concurrent peripheral and central connection events

A peripheral link is arbitrarily positioned with respect to the central links. Therefore, if the peripheral connection event occurs too close to the central connection event, the notification signal before the peripheral connection event might not be available to the application.

Figure 1 shows an example where the time distance between the central and the peripheral events is too small to allow the SoftDevice to trigger the ACTIVE notification signal.

Figure 1. Example: The gap between the links as a Central and the Peripheral is too small to trigger the notification signal

If the following condition is met:

tgap > tndist

the notification signal will arrive, as illustrated in Figure 2.

Figure 2. Example: The gap between the links as a Central and the Peripheral is sufficient to trigger the notification signal


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